./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-1.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c3fed411 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-1.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 cab1c092802d28f475b8a467f14dab6a3f796dc1a4441d8517361eeec98aa4cb --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 00:02:32,441 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 00:02:32,444 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 00:02:32,483 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 00:02:32,484 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 00:02:32,487 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 00:02:32,489 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 00:02:32,493 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 00:02:32,494 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 00:02:32,499 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 00:02:32,500 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 00:02:32,501 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 00:02:32,502 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 00:02:32,503 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 00:02:32,505 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 00:02:32,506 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 00:02:32,508 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 00:02:32,509 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 00:02:32,510 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 00:02:32,511 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 00:02:32,512 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 00:02:32,515 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 00:02:32,516 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 00:02:32,517 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 00:02:32,520 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 00:02:32,523 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 00:02:32,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 00:02:32,524 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 00:02:32,525 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 00:02:32,525 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 00:02:32,526 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 00:02:32,526 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 00:02:32,528 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 00:02:32,529 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 00:02:32,530 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 00:02:32,530 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 00:02:32,530 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 00:02:32,531 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 00:02:32,531 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 00:02:32,531 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 00:02:32,532 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 00:02:32,533 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-18 00:02:32,562 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 00:02:32,562 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 00:02:32,562 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 00:02:32,563 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 00:02:32,563 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 00:02:32,564 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 00:02:32,564 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 00:02:32,564 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 00:02:32,565 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 00:02:32,565 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 00:02:32,566 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 00:02:32,566 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 00:02:32,566 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-18 00:02:32,566 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 00:02:32,566 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-18 00:02:32,567 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-18 00:02:32,567 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 00:02:32,567 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-18 00:02:32,567 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 00:02:32,567 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 00:02:32,567 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 00:02:32,568 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 00:02:32,568 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 00:02:32,568 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 00:02:32,568 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-18 00:02:32,568 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 00:02:32,569 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 00:02:32,569 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-18 00:02:32,569 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-18 00:02:32,569 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-18 00:02:32,569 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 00:02:32,570 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cab1c092802d28f475b8a467f14dab6a3f796dc1a4441d8517361eeec98aa4cb [2021-12-18 00:02:32,773 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 00:02:32,803 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 00:02:32,806 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 00:02:32,807 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 00:02:32,807 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 00:02:32,808 INFO L432 ainManager$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-1.i [2021-12-18 00:02:32,868 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51c199320/18ed950edf27420e9f0ff479311fcb85/FLAGe9bb9e72f [2021-12-18 00:02:33,571 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 00:02:33,571 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i [2021-12-18 00:02:33,618 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51c199320/18ed950edf27420e9f0ff479311fcb85/FLAGe9bb9e72f [2021-12-18 00:02:33,880 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/51c199320/18ed950edf27420e9f0ff479311fcb85 [2021-12-18 00:02:33,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 00:02:33,886 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 00:02:33,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 00:02:33,892 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 00:02:33,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 00:02:33,895 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 12:02:33" (1/1) ... [2021-12-18 00:02:33,896 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36daa5ae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:02:33, skipping insertion in model container [2021-12-18 00:02:33,896 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 12:02:33" (1/1) ... [2021-12-18 00:02:33,902 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 00:02:34,004 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 00:02:34,234 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-1.i[4510,4523] [2021-12-18 00:02:34,241 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-1.i[4570,4583] [2021-12-18 00:02:34,894 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:02:34,901 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:02:34,903 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:02:34,903 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:02:34,904 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:02:34,914 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:02:34,915 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:02:34,919 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:02:34,920 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:02:35,151 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-18 00:02:35,152 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-18 00:02:35,153 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-18 00:02:35,154 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-18 00:02:35,155 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-18 00:02:35,155 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-18 00:02:35,156 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-18 00:02:35,156 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-18 00:02:35,157 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-18 00:02:35,157 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-18 00:02:35,251 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-18 00:02:35,370 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:02:35,382 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:02:35,455 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 00:02:35,507 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 00:02:35,528 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-1.i[4510,4523] [2021-12-18 00:02:35,530 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-1.i[4570,4583] [2021-12-18 00:02:35,567 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:02:35,568 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:02:35,569 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:02:35,569 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:02:35,570 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:02:35,582 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:02:35,583 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:02:35,584 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:02:35,584 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:02:35,625 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-18 00:02:35,625 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-18 00:02:35,626 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-18 00:02:35,627 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-18 00:02:35,627 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-18 00:02:35,627 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-18 00:02:35,628 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-18 00:02:35,628 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-18 00:02:35,629 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-18 00:02:35,632 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-18 00:02:35,650 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-18 00:02:35,722 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:02:35,723 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-18 00:02:35,753 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 00:02:35,968 INFO L208 MainTranslator]: Completed translation [2021-12-18 00:02:35,969 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:02:35 WrapperNode [2021-12-18 00:02:35,969 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 00:02:35,970 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 00:02:35,970 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 00:02:35,970 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 00:02:35,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:02:35" (1/1) ... [2021-12-18 00:02:36,074 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:02:35" (1/1) ... [2021-12-18 00:02:36,130 INFO L137 Inliner]: procedures = 691, calls = 2668, calls flagged for inlining = 58, calls inlined = 5, statements flattened = 900 [2021-12-18 00:02:36,130 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 00:02:36,131 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 00:02:36,131 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 00:02:36,131 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 00:02:36,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:02:35" (1/1) ... [2021-12-18 00:02:36,140 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:02:35" (1/1) ... [2021-12-18 00:02:36,151 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:02:35" (1/1) ... [2021-12-18 00:02:36,152 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:02:35" (1/1) ... [2021-12-18 00:02:36,182 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:02:35" (1/1) ... [2021-12-18 00:02:36,186 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:02:35" (1/1) ... [2021-12-18 00:02:36,192 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:02:35" (1/1) ... [2021-12-18 00:02:36,203 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 00:02:36,204 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 00:02:36,213 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 00:02:36,213 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 00:02:36,214 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:02:35" (1/1) ... [2021-12-18 00:02:36,220 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 00:02:36,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:02:36,240 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-18 00:02:36,249 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-18 00:02:36,274 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-12-18 00:02:36,274 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-12-18 00:02:36,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 00:02:36,275 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-18 00:02:36,275 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-18 00:02:36,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 00:02:36,275 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-18 00:02:36,275 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-18 00:02:36,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 00:02:36,276 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 00:02:36,276 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2021-12-18 00:02:36,277 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2021-12-18 00:02:36,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-18 00:02:36,278 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-12-18 00:02:36,278 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-12-18 00:02:36,278 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2021-12-18 00:02:36,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2021-12-18 00:02:36,278 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 00:02:36,278 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 00:02:36,278 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-18 00:02:36,278 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-18 00:02:36,279 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-12-18 00:02:36,279 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-12-18 00:02:36,279 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2021-12-18 00:02:36,279 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2021-12-18 00:02:36,280 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-18 00:02:36,280 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-18 00:02:36,280 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-12-18 00:02:36,281 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-12-18 00:02:36,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 00:02:36,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-18 00:02:36,281 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2021-12-18 00:02:36,281 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2021-12-18 00:02:36,281 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 00:02:36,282 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-18 00:02:36,282 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-18 00:02:36,282 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-18 00:02:36,282 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-18 00:02:36,282 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2021-12-18 00:02:36,282 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2021-12-18 00:02:36,282 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 00:02:36,282 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_buf_equivalence [2021-12-18 00:02:36,283 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_buf_equivalence [2021-12-18 00:02:36,283 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 00:02:36,584 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 00:02:36,589 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 00:02:37,319 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 00:02:37,329 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 00:02:37,329 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-18 00:02:37,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 12:02:37 BoogieIcfgContainer [2021-12-18 00:02:37,331 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 00:02:37,332 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 00:02:37,333 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 00:02:37,335 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 00:02:37,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 12:02:33" (1/3) ... [2021-12-18 00:02:37,336 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7992146a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 12:02:37, skipping insertion in model container [2021-12-18 00:02:37,336 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 12:02:35" (2/3) ... [2021-12-18 00:02:37,337 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7992146a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 12:02:37, skipping insertion in model container [2021-12-18 00:02:37,337 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 12:02:37" (3/3) ... [2021-12-18 00:02:37,340 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_from_whole_buffer_harness-1.i [2021-12-18 00:02:37,345 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 00:02:37,345 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-18 00:02:37,394 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 00:02:37,410 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-18 00:02:37,412 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-18 00:02:37,432 INFO L276 IsEmpty]: Start isEmpty. Operand has 187 states, 111 states have (on average 1.2072072072072073) internal successors, (134), 113 states have internal predecessors, (134), 58 states have call successors, (58), 16 states have call predecessors, (58), 16 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2021-12-18 00:02:37,451 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-12-18 00:02:37,452 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:02:37,453 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:02:37,453 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:02:37,458 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:02:37,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1514198340, now seen corresponding path program 1 times [2021-12-18 00:02:37,466 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:02:37,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340845088] [2021-12-18 00:02:37,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:02:37,469 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:02:37,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:37,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:02:37,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:37,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:02:37,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:38,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:02:38,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:38,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 00:02:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:38,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:02:38,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:38,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 00:02:38,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:38,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 00:02:38,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:38,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:38,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:38,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:02:38,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:38,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:38,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:38,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:02:38,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:38,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-18 00:02:38,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:38,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 00:02:38,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:38,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 00:02:38,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:38,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-18 00:02:38,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:38,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:38,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:38,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:02:38,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:38,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:38,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:38,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-18 00:02:38,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:38,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 00:02:38,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:38,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-18 00:02:38,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:38,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 00:02:38,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:38,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-18 00:02:38,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:38,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 00:02:38,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:38,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-18 00:02:38,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:38,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-18 00:02:38,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:38,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-18 00:02:38,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:38,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-18 00:02:38,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:38,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-18 00:02:38,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:38,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-18 00:02:38,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:38,348 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2021-12-18 00:02:38,349 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:02:38,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340845088] [2021-12-18 00:02:38,349 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340845088] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:02:38,350 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 00:02:38,350 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 00:02:38,351 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22474457] [2021-12-18 00:02:38,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:02:38,355 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 00:02:38,355 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:02:38,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 00:02:38,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 00:02:38,378 INFO L87 Difference]: Start difference. First operand has 187 states, 111 states have (on average 1.2072072072072073) internal successors, (134), 113 states have internal predecessors, (134), 58 states have call successors, (58), 16 states have call predecessors, (58), 16 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-18 00:02:38,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:02:38,877 INFO L93 Difference]: Finished difference Result 374 states and 536 transitions. [2021-12-18 00:02:38,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 00:02:38,879 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 176 [2021-12-18 00:02:38,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:02:38,895 INFO L225 Difference]: With dead ends: 374 [2021-12-18 00:02:38,895 INFO L226 Difference]: Without dead ends: 194 [2021-12-18 00:02:38,905 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 00:02:38,911 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 179 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-18 00:02:38,912 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [200 Valid, 259 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-18 00:02:38,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2021-12-18 00:02:38,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 182. [2021-12-18 00:02:38,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 107 states have (on average 1.1869158878504673) internal successors, (127), 109 states have internal predecessors, (127), 58 states have call successors, (58), 16 states have call predecessors, (58), 16 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2021-12-18 00:02:38,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 242 transitions. [2021-12-18 00:02:38,967 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 242 transitions. Word has length 176 [2021-12-18 00:02:38,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:02:38,967 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 242 transitions. [2021-12-18 00:02:38,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2021-12-18 00:02:38,968 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 242 transitions. [2021-12-18 00:02:38,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-12-18 00:02:38,971 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:02:38,971 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:02:38,971 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 00:02:38,971 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:02:38,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:02:38,972 INFO L85 PathProgramCache]: Analyzing trace with hash 606096116, now seen corresponding path program 1 times [2021-12-18 00:02:38,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:02:38,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1986786372] [2021-12-18 00:02:38,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:02:38,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:02:39,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:02:39,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:02:39,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:02:39,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 00:02:39,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:02:39,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 00:02:39,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 00:02:39,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:39,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:02:39,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:39,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:02:39,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-18 00:02:39,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 00:02:39,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 00:02:39,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-18 00:02:39,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:39,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:02:39,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:39,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-18 00:02:39,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 00:02:39,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-18 00:02:39,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 00:02:39,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-18 00:02:39,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 00:02:39,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-18 00:02:39,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-18 00:02:39,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-18 00:02:39,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-18 00:02:39,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-18 00:02:39,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-18 00:02:39,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,488 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-12-18 00:02:39,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:02:39,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1986786372] [2021-12-18 00:02:39,489 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1986786372] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:02:39,489 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641024869] [2021-12-18 00:02:39,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:02:39,489 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:02:39,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:02:39,495 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:02:39,519 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-18 00:02:40,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:40,060 INFO L263 TraceCheckSpWp]: Trace formula consists of 3020 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-18 00:02:40,070 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:02:40,494 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2021-12-18 00:02:40,494 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:02:40,495 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641024869] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:02:40,495 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:02:40,495 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2021-12-18 00:02:40,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15352015] [2021-12-18 00:02:40,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:02:40,498 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 00:02:40,498 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:02:40,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 00:02:40,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2021-12-18 00:02:40,500 INFO L87 Difference]: Start difference. First operand 182 states and 242 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-12-18 00:02:40,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:02:40,736 INFO L93 Difference]: Finished difference Result 352 states and 472 transitions. [2021-12-18 00:02:40,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 00:02:40,737 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 176 [2021-12-18 00:02:40,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:02:40,739 INFO L225 Difference]: With dead ends: 352 [2021-12-18 00:02:40,740 INFO L226 Difference]: Without dead ends: 185 [2021-12-18 00:02:40,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2021-12-18 00:02:40,741 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 256 mSDsluCounter, 351 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 543 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 00:02:40,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [259 Valid, 543 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 117 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 00:02:40,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-12-18 00:02:40,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2021-12-18 00:02:40,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 109 states have (on average 1.18348623853211) internal successors, (129), 112 states have internal predecessors, (129), 58 states have call successors, (58), 16 states have call predecessors, (58), 17 states have return successors, (64), 57 states have call predecessors, (64), 57 states have call successors, (64) [2021-12-18 00:02:40,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 251 transitions. [2021-12-18 00:02:40,758 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 251 transitions. Word has length 176 [2021-12-18 00:02:40,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:02:40,759 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 251 transitions. [2021-12-18 00:02:40,759 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-12-18 00:02:40,759 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 251 transitions. [2021-12-18 00:02:40,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2021-12-18 00:02:40,761 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:02:40,761 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:02:40,787 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-18 00:02:40,967 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:02:40,968 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:02:40,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:02:40,968 INFO L85 PathProgramCache]: Analyzing trace with hash 1545774441, now seen corresponding path program 1 times [2021-12-18 00:02:40,969 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:02:40,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690665284] [2021-12-18 00:02:40,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:02:40,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:02:41,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:02:41,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:02:41,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:02:41,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 00:02:41,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:02:41,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 00:02:41,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 00:02:41,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:41,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:02:41,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:41,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:02:41,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 00:02:41,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:02:41,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-18 00:02:41,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 00:02:41,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:41,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:02:41,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:41,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 00:02:41,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-18 00:02:41,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 00:02:41,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-18 00:02:41,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 00:02:41,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-18 00:02:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-18 00:02:41,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-18 00:02:41,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-18 00:02:41,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-18 00:02:41,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-18 00:02:41,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-18 00:02:41,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,510 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-12-18 00:02:41,510 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:02:41,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690665284] [2021-12-18 00:02:41,510 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690665284] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:02:41,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [99506136] [2021-12-18 00:02:41,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:02:41,511 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:02:41,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:02:41,512 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:02:41,531 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-18 00:02:42,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:42,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 3037 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-18 00:02:42,061 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:02:42,390 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 144 proven. 12 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2021-12-18 00:02:42,390 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:02:42,801 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-12-18 00:02:42,802 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [99506136] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 00:02:42,802 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 00:02:42,802 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2021-12-18 00:02:42,802 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1562416425] [2021-12-18 00:02:42,803 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 00:02:42,805 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-18 00:02:42,805 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:02:42,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-18 00:02:42,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-12-18 00:02:42,806 INFO L87 Difference]: Start difference. First operand 185 states and 251 transitions. Second operand has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 11 states have internal predecessors, (94), 7 states have call successors, (69), 6 states have call predecessors, (69), 5 states have return successors, (64), 7 states have call predecessors, (64), 7 states have call successors, (64) [2021-12-18 00:02:43,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:02:43,662 INFO L93 Difference]: Finished difference Result 336 states and 456 transitions. [2021-12-18 00:02:43,663 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 00:02:43,663 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 11 states have internal predecessors, (94), 7 states have call successors, (69), 6 states have call predecessors, (69), 5 states have return successors, (64), 7 states have call predecessors, (64), 7 states have call successors, (64) Word has length 182 [2021-12-18 00:02:43,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:02:43,665 INFO L225 Difference]: With dead ends: 336 [2021-12-18 00:02:43,665 INFO L226 Difference]: Without dead ends: 197 [2021-12-18 00:02:43,666 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2021-12-18 00:02:43,667 INFO L933 BasicCegarLoop]: 154 mSDtfsCounter, 466 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 736 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 1137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-18 00:02:43,667 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [466 Valid, 490 Invalid, 1137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 736 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-18 00:02:43,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2021-12-18 00:02:43,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 185. [2021-12-18 00:02:43,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 109 states have (on average 1.18348623853211) internal successors, (129), 112 states have internal predecessors, (129), 58 states have call successors, (58), 16 states have call predecessors, (58), 17 states have return successors, (62), 57 states have call predecessors, (62), 57 states have call successors, (62) [2021-12-18 00:02:43,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 249 transitions. [2021-12-18 00:02:43,682 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 249 transitions. Word has length 182 [2021-12-18 00:02:43,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:02:43,683 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 249 transitions. [2021-12-18 00:02:43,683 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 11 states have internal predecessors, (94), 7 states have call successors, (69), 6 states have call predecessors, (69), 5 states have return successors, (64), 7 states have call predecessors, (64), 7 states have call successors, (64) [2021-12-18 00:02:43,683 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 249 transitions. [2021-12-18 00:02:43,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2021-12-18 00:02:43,685 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:02:43,686 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:02:43,717 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-18 00:02:43,904 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-12-18 00:02:43,904 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:02:43,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:02:43,904 INFO L85 PathProgramCache]: Analyzing trace with hash 2124831764, now seen corresponding path program 2 times [2021-12-18 00:02:43,905 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:02:43,905 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515731295] [2021-12-18 00:02:43,905 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:02:43,905 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:02:43,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:44,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:02:44,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:44,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:02:44,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:44,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:02:44,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:44,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 00:02:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:44,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:02:44,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:44,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 00:02:44,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:44,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 00:02:44,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:44,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:44,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:44,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:02:44,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:44,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:44,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:44,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:02:44,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:44,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 00:02:44,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:44,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:02:44,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:44,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-18 00:02:44,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:44,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 00:02:44,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:44,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:44,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:44,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:02:44,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:44,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:44,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:44,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 00:02:44,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:44,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 00:02:44,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:44,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-18 00:02:44,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:44,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 00:02:44,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:44,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-18 00:02:44,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:44,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-18 00:02:44,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:44,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-18 00:02:44,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:44,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-18 00:02:44,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:44,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-18 00:02:44,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:44,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-18 00:02:44,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:44,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-18 00:02:44,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:44,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-18 00:02:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:44,445 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2021-12-18 00:02:44,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:02:44,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515731295] [2021-12-18 00:02:44,446 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515731295] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:02:44,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581138240] [2021-12-18 00:02:44,446 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 00:02:44,446 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:02:44,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:02:44,448 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:02:44,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-18 00:02:44,999 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 00:02:44,999 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 00:02:45,011 INFO L263 TraceCheckSpWp]: Trace formula consists of 3054 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-18 00:02:45,017 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:02:45,362 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-12-18 00:02:45,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:02:45,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581138240] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:02:45,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:02:45,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 13 [2021-12-18 00:02:45,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1323681524] [2021-12-18 00:02:45,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:02:45,363 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 00:02:45,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:02:45,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 00:02:45,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2021-12-18 00:02:45,364 INFO L87 Difference]: Start difference. First operand 185 states and 249 transitions. Second operand has 6 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 4 states have call successors, (27) [2021-12-18 00:02:45,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:02:45,472 INFO L93 Difference]: Finished difference Result 306 states and 415 transitions. [2021-12-18 00:02:45,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 00:02:45,472 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 4 states have call successors, (27) Word has length 188 [2021-12-18 00:02:45,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:02:45,475 INFO L225 Difference]: With dead ends: 306 [2021-12-18 00:02:45,475 INFO L226 Difference]: Without dead ends: 185 [2021-12-18 00:02:45,475 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 256 GetRequests, 243 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2021-12-18 00:02:45,476 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 64 mSDsluCounter, 582 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 809 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 00:02:45,476 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 809 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 00:02:45,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-12-18 00:02:45,490 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2021-12-18 00:02:45,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 109 states have (on average 1.18348623853211) internal successors, (129), 112 states have internal predecessors, (129), 58 states have call successors, (58), 16 states have call predecessors, (58), 17 states have return successors, (61), 57 states have call predecessors, (61), 57 states have call successors, (61) [2021-12-18 00:02:45,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 248 transitions. [2021-12-18 00:02:45,494 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 248 transitions. Word has length 188 [2021-12-18 00:02:45,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:02:45,495 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 248 transitions. [2021-12-18 00:02:45,497 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.6) internal successors, (63), 6 states have internal predecessors, (63), 4 states have call successors, (29), 2 states have call predecessors, (29), 3 states have return successors, (27), 3 states have call predecessors, (27), 4 states have call successors, (27) [2021-12-18 00:02:45,497 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 248 transitions. [2021-12-18 00:02:45,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2021-12-18 00:02:45,500 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:02:45,500 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 4, 4, 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, 1, 1, 1] [2021-12-18 00:02:45,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-18 00:02:45,727 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:02:45,728 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:02:45,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:02:45,728 INFO L85 PathProgramCache]: Analyzing trace with hash 276622079, now seen corresponding path program 3 times [2021-12-18 00:02:45,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:02:45,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655574090] [2021-12-18 00:02:45,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:02:45,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:02:45,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:45,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:02:45,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:45,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:02:45,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:45,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:02:46,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:46,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 00:02:46,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:46,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:02:46,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:46,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 00:02:46,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:46,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 00:02:46,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:46,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:46,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:46,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:02:46,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:46,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:46,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:02:46,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:46,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 00:02:46,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:46,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:02:46,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:46,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-18 00:02:46,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:46,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 00:02:46,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:46,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:46,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:46,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:02:46,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:46,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:46,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:46,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 00:02:46,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:46,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 00:02:46,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:46,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-18 00:02:46,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:46,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 00:02:46,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:46,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-18 00:02:46,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:46,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-18 00:02:46,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:46,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-18 00:02:46,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:46,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-18 00:02:46,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:46,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-18 00:02:46,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:46,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2021-12-18 00:02:46,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:46,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-18 00:02:46,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:46,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 184 [2021-12-18 00:02:46,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:46,386 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 12 proven. 36 refuted. 0 times theorem prover too weak. 266 trivial. 0 not checked. [2021-12-18 00:02:46,387 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:02:46,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655574090] [2021-12-18 00:02:46,387 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655574090] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:02:46,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [670098773] [2021-12-18 00:02:46,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-18 00:02:46,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:02:46,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:02:46,389 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:02:46,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-18 00:02:47,446 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-18 00:02:47,447 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 00:02:47,460 INFO L263 TraceCheckSpWp]: Trace formula consists of 2525 conjuncts, 20 conjunts are in the unsatisfiable core [2021-12-18 00:02:47,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:02:47,806 INFO L134 CoverageAnalysis]: Checked inductivity of 314 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2021-12-18 00:02:47,807 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:02:47,807 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [670098773] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:02:47,807 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:02:47,807 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [15] total 20 [2021-12-18 00:02:47,808 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135415694] [2021-12-18 00:02:47,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:02:47,808 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 00:02:47,808 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:02:47,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 00:02:47,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2021-12-18 00:02:47,809 INFO L87 Difference]: Start difference. First operand 185 states and 248 transitions. Second operand has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-12-18 00:02:47,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:02:47,928 INFO L93 Difference]: Finished difference Result 298 states and 400 transitions. [2021-12-18 00:02:47,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 00:02:47,928 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 194 [2021-12-18 00:02:47,929 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:02:47,931 INFO L225 Difference]: With dead ends: 298 [2021-12-18 00:02:47,931 INFO L226 Difference]: Without dead ends: 185 [2021-12-18 00:02:47,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2021-12-18 00:02:47,932 INFO L933 BasicCegarLoop]: 226 mSDtfsCounter, 2 mSDsluCounter, 1093 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 00:02:47,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 1319 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 00:02:47,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-12-18 00:02:47,943 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2021-12-18 00:02:47,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 109 states have (on average 1.18348623853211) internal successors, (129), 112 states have internal predecessors, (129), 58 states have call successors, (58), 16 states have call predecessors, (58), 17 states have return successors, (60), 57 states have call predecessors, (60), 57 states have call successors, (60) [2021-12-18 00:02:47,946 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 247 transitions. [2021-12-18 00:02:47,946 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 247 transitions. Word has length 194 [2021-12-18 00:02:47,947 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:02:47,947 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 247 transitions. [2021-12-18 00:02:47,947 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 11.0) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-12-18 00:02:47,947 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 247 transitions. [2021-12-18 00:02:47,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-12-18 00:02:47,949 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:02:47,949 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:02:47,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-18 00:02:48,167 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:02:48,167 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:02:48,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:02:48,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1020863850, now seen corresponding path program 4 times [2021-12-18 00:02:48,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:02:48,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1371379895] [2021-12-18 00:02:48,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:02:48,168 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:02:48,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:48,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:02:48,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:48,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:02:48,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:48,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:02:48,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:48,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 00:02:48,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:48,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:02:48,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:48,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 00:02:48,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:48,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 00:02:48,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:48,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:48,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:48,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:02:48,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:48,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:48,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:48,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:02:48,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:48,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 00:02:48,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:48,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:02:48,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:48,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-18 00:02:48,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:48,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 00:02:48,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:48,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:48,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:48,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:02:48,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:48,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:48,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:48,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 00:02:48,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:48,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 00:02:48,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:48,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-18 00:02:48,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:48,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 00:02:48,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:48,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-18 00:02:48,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:48,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-18 00:02:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:48,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-18 00:02:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:48,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-18 00:02:48,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:48,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-18 00:02:48,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:48,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-18 00:02:48,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:48,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-18 00:02:48,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:48,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-18 00:02:48,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:48,595 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2021-12-18 00:02:48,596 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:02:48,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1371379895] [2021-12-18 00:02:48,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1371379895] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:02:48,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [750238265] [2021-12-18 00:02:48,597 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-18 00:02:48,597 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:02:48,597 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:02:48,598 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:02:48,599 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-18 00:02:48,833 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-18 00:02:48,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 00:02:48,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 524 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-18 00:02:48,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:02:48,991 INFO L388 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 [2021-12-18 00:02:49,465 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 126 proven. 0 refuted. 0 times theorem prover too weak. 206 trivial. 0 not checked. [2021-12-18 00:02:49,465 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:02:49,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [750238265] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:02:49,465 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:02:49,465 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [8] total 18 [2021-12-18 00:02:49,465 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818970023] [2021-12-18 00:02:49,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:02:49,466 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-18 00:02:49,466 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:02:49,466 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-18 00:02:49,467 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=261, Unknown=0, NotChecked=0, Total=306 [2021-12-18 00:02:49,467 INFO L87 Difference]: Start difference. First operand 185 states and 247 transitions. Second operand has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 9 states have internal predecessors, (78), 4 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) [2021-12-18 00:02:49,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:02:49,520 INFO L93 Difference]: Finished difference Result 375 states and 495 transitions. [2021-12-18 00:02:49,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 00:02:49,521 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 9 states have internal predecessors, (78), 4 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) Word has length 200 [2021-12-18 00:02:49,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:02:49,523 INFO L225 Difference]: With dead ends: 375 [2021-12-18 00:02:49,523 INFO L226 Difference]: Without dead ends: 198 [2021-12-18 00:02:49,524 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 248 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=292, Unknown=0, NotChecked=0, Total=342 [2021-12-18 00:02:49,526 INFO L933 BasicCegarLoop]: 236 mSDtfsCounter, 31 mSDsluCounter, 1149 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 1385 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 78 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 00:02:49,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 1385 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 78 Unchecked, 0.0s Time] [2021-12-18 00:02:49,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-12-18 00:02:49,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 198. [2021-12-18 00:02:49,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 121 states have (on average 1.1900826446280992) internal successors, (144), 124 states have internal predecessors, (144), 58 states have call successors, (58), 17 states have call predecessors, (58), 18 states have return successors, (61), 57 states have call predecessors, (61), 57 states have call successors, (61) [2021-12-18 00:02:49,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 263 transitions. [2021-12-18 00:02:49,548 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 263 transitions. Word has length 200 [2021-12-18 00:02:49,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:02:49,549 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 263 transitions. [2021-12-18 00:02:49,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 9 states have internal predecessors, (78), 4 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (30), 5 states have call predecessors, (30), 4 states have call successors, (30) [2021-12-18 00:02:49,549 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 263 transitions. [2021-12-18 00:02:49,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 201 [2021-12-18 00:02:49,552 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:02:49,553 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1] [2021-12-18 00:02:49,584 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-18 00:02:49,767 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:02:49,768 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:02:49,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:02:49,768 INFO L85 PathProgramCache]: Analyzing trace with hash 480434344, now seen corresponding path program 1 times [2021-12-18 00:02:49,768 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:02:49,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875199687] [2021-12-18 00:02:49,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:02:49,769 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:02:49,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:49,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:02:49,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:49,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:02:49,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:49,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:02:49,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:49,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 00:02:49,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:49,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:02:49,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:49,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 00:02:49,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:49,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 00:02:49,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:49,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:49,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:49,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:02:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:49,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:49,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:49,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:02:49,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:49,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 00:02:49,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:49,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:02:49,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:50,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-18 00:02:50,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:50,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 00:02:50,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:50,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:50,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:50,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:02:50,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:50,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:50,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:50,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 00:02:50,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:50,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 00:02:50,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:50,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-18 00:02:50,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:50,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 00:02:50,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:50,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-18 00:02:50,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:50,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-18 00:02:50,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:50,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-18 00:02:50,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:50,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-18 00:02:50,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:50,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-18 00:02:50,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:50,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-18 00:02:50,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:50,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-18 00:02:50,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:50,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2021-12-18 00:02:50,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:50,149 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2021-12-18 00:02:50,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:02:50,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875199687] [2021-12-18 00:02:50,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875199687] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:02:50,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [199869006] [2021-12-18 00:02:50,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:02:50,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:02:50,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:02:50,156 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:02:50,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-18 00:02:50,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:50,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 3083 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 00:02:50,702 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:02:50,964 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2021-12-18 00:02:50,964 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:02:50,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [199869006] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:02:50,965 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:02:50,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2021-12-18 00:02:50,965 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015732021] [2021-12-18 00:02:50,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:02:50,966 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 00:02:50,966 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:02:50,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 00:02:50,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 00:02:50,967 INFO L87 Difference]: Start difference. First operand 198 states and 263 transitions. Second operand has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-18 00:02:51,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:02:51,000 INFO L93 Difference]: Finished difference Result 378 states and 510 transitions. [2021-12-18 00:02:51,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 00:02:51,001 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 200 [2021-12-18 00:02:51,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:02:51,003 INFO L225 Difference]: With dead ends: 378 [2021-12-18 00:02:51,003 INFO L226 Difference]: Without dead ends: 204 [2021-12-18 00:02:51,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 259 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-18 00:02:51,005 INFO L933 BasicCegarLoop]: 253 mSDtfsCounter, 20 mSDsluCounter, 465 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 718 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 00:02:51,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 718 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 00:02:51,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-12-18 00:02:51,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 192. [2021-12-18 00:02:51,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 116 states have (on average 1.1896551724137931) internal successors, (138), 118 states have internal predecessors, (138), 58 states have call successors, (58), 17 states have call predecessors, (58), 17 states have return successors, (60), 57 states have call predecessors, (60), 57 states have call successors, (60) [2021-12-18 00:02:51,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 256 transitions. [2021-12-18 00:02:51,030 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 256 transitions. Word has length 200 [2021-12-18 00:02:51,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:02:51,031 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 256 transitions. [2021-12-18 00:02:51,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.75) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-18 00:02:51,031 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 256 transitions. [2021-12-18 00:02:51,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2021-12-18 00:02:51,033 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:02:51,034 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2021-12-18 00:02:51,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-18 00:02:51,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:02:51,260 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:02:51,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:02:51,260 INFO L85 PathProgramCache]: Analyzing trace with hash -485818398, now seen corresponding path program 1 times [2021-12-18 00:02:51,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:02:51,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505607409] [2021-12-18 00:02:51,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:02:51,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:02:51,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:51,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:02:51,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:51,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:02:51,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:51,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:02:51,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:51,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 00:02:51,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:51,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:02:51,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:51,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 00:02:51,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:51,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 00:02:51,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:51,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:51,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:51,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:02:51,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:51,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:51,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:51,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:02:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:51,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 00:02:51,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:51,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-18 00:02:51,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:51,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 00:02:51,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:51,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 00:02:51,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:51,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:51,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:51,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:02:51,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:51,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:51,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:51,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-18 00:02:51,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:51,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 00:02:51,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:51,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-18 00:02:51,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:51,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-18 00:02:51,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:51,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 00:02:51,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:51,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-18 00:02:51,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:51,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-18 00:02:51,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:51,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-18 00:02:51,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:51,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-18 00:02:51,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:51,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-18 00:02:51,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:51,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-18 00:02:51,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:51,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-18 00:02:51,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:51,726 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2021-12-18 00:02:51,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:02:51,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505607409] [2021-12-18 00:02:51,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505607409] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:02:51,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697569293] [2021-12-18 00:02:51,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:02:51,728 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:02:51,728 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:02:51,729 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:02:51,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-18 00:02:52,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:52,315 INFO L263 TraceCheckSpWp]: Trace formula consists of 3100 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-18 00:02:52,320 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:02:52,749 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 146 proven. 56 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-12-18 00:02:52,750 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:02:53,171 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 312 trivial. 0 not checked. [2021-12-18 00:02:53,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697569293] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 00:02:53,172 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 00:02:53,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2021-12-18 00:02:53,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292618649] [2021-12-18 00:02:53,172 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 00:02:53,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-18 00:02:53,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:02:53,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-18 00:02:53,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-12-18 00:02:53,174 INFO L87 Difference]: Start difference. First operand 192 states and 256 transitions. Second operand has 14 states, 14 states have (on average 10.285714285714286) internal successors, (144), 11 states have internal predecessors, (144), 7 states have call successors, (76), 6 states have call predecessors, (76), 5 states have return successors, (73), 7 states have call predecessors, (73), 7 states have call successors, (73) [2021-12-18 00:02:54,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:02:54,027 INFO L93 Difference]: Finished difference Result 324 states and 431 transitions. [2021-12-18 00:02:54,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 00:02:54,028 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.285714285714286) internal successors, (144), 11 states have internal predecessors, (144), 7 states have call successors, (76), 6 states have call predecessors, (76), 5 states have return successors, (73), 7 states have call predecessors, (73), 7 states have call successors, (73) Word has length 204 [2021-12-18 00:02:54,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:02:54,030 INFO L225 Difference]: With dead ends: 324 [2021-12-18 00:02:54,030 INFO L226 Difference]: Without dead ends: 204 [2021-12-18 00:02:54,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 479 GetRequests, 461 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2021-12-18 00:02:54,032 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 251 mSDsluCounter, 618 mSDsCounter, 0 mSdLazyCounter, 852 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 803 SdHoareTripleChecker+Invalid, 1037 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-18 00:02:54,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [263 Valid, 803 Invalid, 1037 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 852 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-18 00:02:54,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-12-18 00:02:54,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 192. [2021-12-18 00:02:54,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 192 states, 116 states have (on average 1.1896551724137931) internal successors, (138), 118 states have internal predecessors, (138), 58 states have call successors, (58), 17 states have call predecessors, (58), 17 states have return successors, (59), 57 states have call predecessors, (59), 57 states have call successors, (59) [2021-12-18 00:02:54,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 192 states to 192 states and 255 transitions. [2021-12-18 00:02:54,043 INFO L78 Accepts]: Start accepts. Automaton has 192 states and 255 transitions. Word has length 204 [2021-12-18 00:02:54,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:02:54,044 INFO L470 AbstractCegarLoop]: Abstraction has 192 states and 255 transitions. [2021-12-18 00:02:54,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.285714285714286) internal successors, (144), 11 states have internal predecessors, (144), 7 states have call successors, (76), 6 states have call predecessors, (76), 5 states have return successors, (73), 7 states have call predecessors, (73), 7 states have call successors, (73) [2021-12-18 00:02:54,045 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states and 255 transitions. [2021-12-18 00:02:54,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2021-12-18 00:02:54,048 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:02:54,048 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:02:54,085 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-18 00:02:54,267 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:02:54,268 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:02:54,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:02:54,268 INFO L85 PathProgramCache]: Analyzing trace with hash -2086614003, now seen corresponding path program 2 times [2021-12-18 00:02:54,268 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:02:54,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1229653809] [2021-12-18 00:02:54,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:02:54,268 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:02:54,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:54,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:02:54,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:54,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:02:54,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:54,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:02:54,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:54,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 00:02:54,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:54,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:02:54,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:54,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 00:02:54,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:54,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 00:02:54,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:54,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:54,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:54,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:02:54,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:54,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:54,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:54,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:02:54,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:54,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 00:02:54,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:54,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-18 00:02:54,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:54,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 00:02:54,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:54,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 00:02:54,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:54,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:54,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:54,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:02:54,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:54,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:54,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:54,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-18 00:02:54,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:54,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 00:02:54,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:54,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-18 00:02:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:54,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-18 00:02:54,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:54,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 00:02:54,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:54,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-18 00:02:54,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:54,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-18 00:02:54,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:54,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-18 00:02:54,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:54,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-18 00:02:54,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:54,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-18 00:02:54,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:54,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-18 00:02:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:54,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-18 00:02:54,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:54,878 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 17 proven. 39 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-12-18 00:02:54,878 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:02:54,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1229653809] [2021-12-18 00:02:54,879 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1229653809] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:02:54,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [430488388] [2021-12-18 00:02:54,879 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 00:02:54,879 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:02:54,879 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:02:54,884 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:02:54,885 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-18 00:02:55,725 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 00:02:55,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 00:02:55,738 INFO L263 TraceCheckSpWp]: Trace formula consists of 3117 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-18 00:02:55,744 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:02:56,061 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2021-12-18 00:02:56,061 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:02:56,062 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [430488388] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:02:56,062 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:02:56,062 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [15] total 15 [2021-12-18 00:02:56,062 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1791804553] [2021-12-18 00:02:56,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:02:56,063 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 00:02:56,063 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:02:56,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 00:02:56,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2021-12-18 00:02:56,064 INFO L87 Difference]: Start difference. First operand 192 states and 255 transitions. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 5 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 5 states have call predecessors, (27), 4 states have call successors, (27) [2021-12-18 00:02:56,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:02:56,219 INFO L93 Difference]: Finished difference Result 282 states and 372 transitions. [2021-12-18 00:02:56,220 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 00:02:56,220 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 5 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 5 states have call predecessors, (27), 4 states have call successors, (27) Word has length 210 [2021-12-18 00:02:56,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:02:56,222 INFO L225 Difference]: With dead ends: 282 [2021-12-18 00:02:56,222 INFO L226 Difference]: Without dead ends: 189 [2021-12-18 00:02:56,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 267 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-12-18 00:02:56,223 INFO L933 BasicCegarLoop]: 227 mSDtfsCounter, 79 mSDsluCounter, 1005 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 1232 SdHoareTripleChecker+Invalid, 130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 00:02:56,224 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 1232 Invalid, 130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 00:02:56,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-12-18 00:02:56,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 189. [2021-12-18 00:02:56,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 189 states, 114 states have (on average 1.1842105263157894) internal successors, (135), 115 states have internal predecessors, (135), 58 states have call successors, (58), 17 states have call predecessors, (58), 16 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2021-12-18 00:02:56,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 189 states to 189 states and 250 transitions. [2021-12-18 00:02:56,233 INFO L78 Accepts]: Start accepts. Automaton has 189 states and 250 transitions. Word has length 210 [2021-12-18 00:02:56,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:02:56,234 INFO L470 AbstractCegarLoop]: Abstraction has 189 states and 250 transitions. [2021-12-18 00:02:56,234 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 7 states have internal predecessors, (61), 5 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 5 states have call predecessors, (27), 4 states have call successors, (27) [2021-12-18 00:02:56,234 INFO L276 IsEmpty]: Start isEmpty. Operand 189 states and 250 transitions. [2021-12-18 00:02:56,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2021-12-18 00:02:56,236 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:02:56,236 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:02:56,270 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-18 00:02:56,451 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2021-12-18 00:02:56,451 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:02:56,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:02:56,452 INFO L85 PathProgramCache]: Analyzing trace with hash -1636485832, now seen corresponding path program 1 times [2021-12-18 00:02:56,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:02:56,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110580362] [2021-12-18 00:02:56,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:02:56,452 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:02:56,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:56,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:02:56,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:56,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:02:56,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:56,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:02:56,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:56,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 00:02:56,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:56,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:02:56,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:56,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 00:02:56,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:56,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 00:02:56,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:56,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:56,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:56,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:02:56,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:56,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:56,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:56,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:02:56,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:56,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 00:02:56,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:56,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-18 00:02:56,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:56,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 00:02:56,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:56,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 00:02:56,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:56,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:56,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:56,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:02:56,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:56,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:56,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:56,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-18 00:02:56,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:56,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 00:02:56,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:56,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-18 00:02:56,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:56,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-18 00:02:56,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:56,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 00:02:56,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:56,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-18 00:02:56,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:56,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-18 00:02:56,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:56,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-18 00:02:56,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:56,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-18 00:02:56,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:56,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-18 00:02:56,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:56,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-18 00:02:56,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:56,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-18 00:02:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:56,960 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2021-12-18 00:02:56,961 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:02:56,961 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110580362] [2021-12-18 00:02:56,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110580362] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:02:56,961 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 00:02:56,962 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-18 00:02:56,962 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683413171] [2021-12-18 00:02:56,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:02:56,963 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-18 00:02:56,963 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:02:56,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-18 00:02:56,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-18 00:02:56,964 INFO L87 Difference]: Start difference. First operand 189 states and 250 transitions. Second operand has 11 states, 10 states have (on average 6.1) internal successors, (61), 6 states have internal predecessors, (61), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2021-12-18 00:02:57,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:02:57,793 INFO L93 Difference]: Finished difference Result 213 states and 283 transitions. [2021-12-18 00:02:57,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-18 00:02:57,794 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.1) internal successors, (61), 6 states have internal predecessors, (61), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) Word has length 216 [2021-12-18 00:02:57,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:02:57,796 INFO L225 Difference]: With dead ends: 213 [2021-12-18 00:02:57,796 INFO L226 Difference]: Without dead ends: 211 [2021-12-18 00:02:57,797 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=211, Unknown=0, NotChecked=0, Total=272 [2021-12-18 00:02:57,797 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 293 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 833 mSolverCounterSat, 231 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 231 IncrementalHoareTripleChecker+Valid, 833 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-18 00:02:57,797 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [317 Valid, 1017 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [231 Valid, 833 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-18 00:02:57,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-12-18 00:02:57,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 198. [2021-12-18 00:02:57,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 120 states have (on average 1.175) internal successors, (141), 122 states have internal predecessors, (141), 59 states have call successors, (59), 18 states have call predecessors, (59), 18 states have return successors, (66), 58 states have call predecessors, (66), 58 states have call successors, (66) [2021-12-18 00:02:57,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 266 transitions. [2021-12-18 00:02:57,811 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 266 transitions. Word has length 216 [2021-12-18 00:02:57,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:02:57,814 INFO L470 AbstractCegarLoop]: Abstraction has 198 states and 266 transitions. [2021-12-18 00:02:57,814 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.1) internal successors, (61), 6 states have internal predecessors, (61), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2021-12-18 00:02:57,814 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 266 transitions. [2021-12-18 00:02:57,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-12-18 00:02:57,816 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:02:57,816 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:02:57,816 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-12-18 00:02:57,817 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:02:57,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:02:57,817 INFO L85 PathProgramCache]: Analyzing trace with hash 1370610496, now seen corresponding path program 2 times [2021-12-18 00:02:57,817 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:02:57,817 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047952632] [2021-12-18 00:02:57,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:02:57,818 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:02:58,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:58,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:02:58,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:58,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:02:58,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:58,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:02:58,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:58,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 00:02:58,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:58,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:02:58,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:58,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 00:02:58,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:58,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 00:02:58,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:58,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:58,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:58,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:02:58,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:58,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:58,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:58,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:02:58,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:58,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 00:02:58,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:58,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-18 00:02:58,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:58,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 00:02:58,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:58,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 00:02:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:58,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:58,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:58,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:02:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:58,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:58,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:58,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-18 00:02:58,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:58,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 00:02:58,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:58,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-18 00:02:58,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:58,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-18 00:02:58,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:58,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 00:02:58,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:58,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-18 00:02:58,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:58,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-18 00:02:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:58,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-18 00:02:58,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:58,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-18 00:02:58,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:58,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-18 00:02:58,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:58,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-18 00:02:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:58,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-18 00:02:58,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:58,378 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2021-12-18 00:02:58,379 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:02:58,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047952632] [2021-12-18 00:02:58,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047952632] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:02:58,379 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517369423] [2021-12-18 00:02:58,379 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 00:02:58,379 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:02:58,380 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:02:58,381 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:02:58,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-18 00:02:58,848 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-18 00:02:58,848 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 00:02:58,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 2337 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-18 00:02:58,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:02:59,192 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 49 proven. 0 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2021-12-18 00:02:59,192 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:02:59,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517369423] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:02:59,192 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:02:59,192 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [12] total 15 [2021-12-18 00:02:59,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [700000315] [2021-12-18 00:02:59,193 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:02:59,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 00:02:59,193 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:02:59,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 00:02:59,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=181, Unknown=0, NotChecked=0, Total=210 [2021-12-18 00:02:59,194 INFO L87 Difference]: Start difference. First operand 198 states and 266 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2021-12-18 00:02:59,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:02:59,409 INFO L93 Difference]: Finished difference Result 398 states and 555 transitions. [2021-12-18 00:02:59,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 00:02:59,410 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) Word has length 220 [2021-12-18 00:02:59,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:02:59,411 INFO L225 Difference]: With dead ends: 398 [2021-12-18 00:02:59,411 INFO L226 Difference]: Without dead ends: 220 [2021-12-18 00:02:59,412 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-12-18 00:02:59,413 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 42 mSDsluCounter, 579 mSDsCounter, 0 mSdLazyCounter, 110 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 822 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 53 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 00:02:59,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 822 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 110 Invalid, 0 Unknown, 53 Unchecked, 0.2s Time] [2021-12-18 00:02:59,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-12-18 00:02:59,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 207. [2021-12-18 00:02:59,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 129 states have (on average 1.186046511627907) internal successors, (153), 131 states have internal predecessors, (153), 59 states have call successors, (59), 18 states have call predecessors, (59), 18 states have return successors, (66), 58 states have call predecessors, (66), 58 states have call successors, (66) [2021-12-18 00:02:59,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 278 transitions. [2021-12-18 00:02:59,424 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 278 transitions. Word has length 220 [2021-12-18 00:02:59,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:02:59,425 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 278 transitions. [2021-12-18 00:02:59,425 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2021-12-18 00:02:59,425 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 278 transitions. [2021-12-18 00:02:59,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2021-12-18 00:02:59,427 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:02:59,427 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:02:59,463 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-18 00:02:59,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:02:59,643 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:02:59,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:02:59,644 INFO L85 PathProgramCache]: Analyzing trace with hash -1998809472, now seen corresponding path program 1 times [2021-12-18 00:02:59,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:02:59,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1152633733] [2021-12-18 00:02:59,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:02:59,644 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:02:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:59,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:02:59,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:59,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:02:59,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:59,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:02:59,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:59,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 00:02:59,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:59,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:02:59,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:59,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 00:02:59,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:59,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 00:02:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:59,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:59,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:59,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:02:59,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:59,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:59,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:59,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:02:59,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:00,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 00:03:00,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:00,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-18 00:03:00,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:00,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-18 00:03:00,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:00,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-18 00:03:00,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:00,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:00,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:03:00,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:00,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:00,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:00,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-18 00:03:00,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:00,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2021-12-18 00:03:00,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:00,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-18 00:03:00,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:00,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-18 00:03:00,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:00,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 00:03:00,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:00,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2021-12-18 00:03:00,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:00,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-18 00:03:00,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:00,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2021-12-18 00:03:00,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:00,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-18 00:03:00,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:00,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-18 00:03:00,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:00,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-18 00:03:00,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:00,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-18 00:03:00,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:00,220 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2021-12-18 00:03:00,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:03:00,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1152633733] [2021-12-18 00:03:00,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1152633733] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:03:00,221 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792726571] [2021-12-18 00:03:00,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:03:00,221 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:03:00,222 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:03:00,224 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:03:00,251 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-18 00:03:00,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:00,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 3136 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-18 00:03:00,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:03:01,237 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 168 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-12-18 00:03:01,237 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:03:01,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792726571] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:03:01,238 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:03:01,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 13 [2021-12-18 00:03:01,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539046854] [2021-12-18 00:03:01,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:03:01,238 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 00:03:01,238 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:03:01,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 00:03:01,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-18 00:03:01,239 INFO L87 Difference]: Start difference. First operand 207 states and 278 transitions. Second operand has 9 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-12-18 00:03:01,386 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:03:01,387 INFO L93 Difference]: Finished difference Result 397 states and 536 transitions. [2021-12-18 00:03:01,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 00:03:01,387 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 220 [2021-12-18 00:03:01,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:03:01,389 INFO L225 Difference]: With dead ends: 397 [2021-12-18 00:03:01,389 INFO L226 Difference]: Without dead ends: 212 [2021-12-18 00:03:01,391 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 290 GetRequests, 274 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-12-18 00:03:01,391 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 12 mSDsluCounter, 1567 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1798 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 00:03:01,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1798 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 00:03:01,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-12-18 00:03:01,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 212. [2021-12-18 00:03:01,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 133 states have (on average 1.1804511278195489) internal successors, (157), 136 states have internal predecessors, (157), 59 states have call successors, (59), 18 states have call predecessors, (59), 19 states have return successors, (74), 58 states have call predecessors, (74), 58 states have call successors, (74) [2021-12-18 00:03:01,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 290 transitions. [2021-12-18 00:03:01,402 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 290 transitions. Word has length 220 [2021-12-18 00:03:01,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:03:01,402 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 290 transitions. [2021-12-18 00:03:01,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.125) internal successors, (89), 8 states have internal predecessors, (89), 3 states have call successors, (32), 2 states have call predecessors, (32), 4 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2021-12-18 00:03:01,403 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 290 transitions. [2021-12-18 00:03:01,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-12-18 00:03:01,404 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:03:01,404 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:03:01,438 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-18 00:03:01,631 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2021-12-18 00:03:01,632 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:03:01,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:03:01,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1213389883, now seen corresponding path program 1 times [2021-12-18 00:03:01,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:03:01,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925679353] [2021-12-18 00:03:01,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:03:01,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:03:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:01,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:03:01,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:01,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:03:01,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:01,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:03:01,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:01,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 00:03:01,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:01,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:03:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:01,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 00:03:01,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:01,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 00:03:01,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:01,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:01,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:01,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:03:01,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:01,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:01,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:01,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:03:01,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:01,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:03:01,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:01,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:03:01,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:01,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 00:03:01,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:01,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-18 00:03:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:01,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:01,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:01,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:03:01,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:01,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:01,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:01,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-18 00:03:01,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:01,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-18 00:03:01,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:01,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 00:03:01,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:01,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-18 00:03:01,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:01,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-18 00:03:01,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:01,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-18 00:03:01,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:01,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-18 00:03:01,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:01,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-18 00:03:01,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:01,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-18 00:03:01,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:01,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-18 00:03:01,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:01,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-18 00:03:01,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:01,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-12-18 00:03:01,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:01,966 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 367 trivial. 0 not checked. [2021-12-18 00:03:01,966 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:03:01,966 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925679353] [2021-12-18 00:03:01,966 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925679353] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:03:01,967 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [679031114] [2021-12-18 00:03:01,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:03:01,967 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:03:01,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:03:01,972 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:03:01,998 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-18 00:03:02,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:02,589 INFO L263 TraceCheckSpWp]: Trace formula consists of 3141 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 00:03:02,593 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:03:02,849 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 121 proven. 0 refuted. 0 times theorem prover too weak. 269 trivial. 0 not checked. [2021-12-18 00:03:02,849 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:03:02,849 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [679031114] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:03:02,849 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:03:02,849 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2021-12-18 00:03:02,850 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [401588462] [2021-12-18 00:03:02,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:03:02,850 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 00:03:02,850 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:03:02,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 00:03:02,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 00:03:02,851 INFO L87 Difference]: Start difference. First operand 212 states and 290 transitions. Second operand has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-18 00:03:02,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:03:02,877 INFO L93 Difference]: Finished difference Result 407 states and 563 transitions. [2021-12-18 00:03:02,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 00:03:02,888 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 222 [2021-12-18 00:03:02,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:03:02,890 INFO L225 Difference]: With dead ends: 407 [2021-12-18 00:03:02,890 INFO L226 Difference]: Without dead ends: 215 [2021-12-18 00:03:02,891 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-18 00:03:02,893 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 9 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 708 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 [2021-12-18 00:03:02,893 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 708 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 00:03:02,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2021-12-18 00:03:02,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 212. [2021-12-18 00:03:02,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 212 states, 133 states have (on average 1.1654135338345866) internal successors, (155), 136 states have internal predecessors, (155), 59 states have call successors, (59), 18 states have call predecessors, (59), 19 states have return successors, (74), 58 states have call predecessors, (74), 58 states have call successors, (74) [2021-12-18 00:03:02,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 212 states to 212 states and 288 transitions. [2021-12-18 00:03:02,907 INFO L78 Accepts]: Start accepts. Automaton has 212 states and 288 transitions. Word has length 222 [2021-12-18 00:03:02,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:03:02,907 INFO L470 AbstractCegarLoop]: Abstraction has 212 states and 288 transitions. [2021-12-18 00:03:02,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.0) internal successors, (84), 4 states have internal predecessors, (84), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-18 00:03:02,908 INFO L276 IsEmpty]: Start isEmpty. Operand 212 states and 288 transitions. [2021-12-18 00:03:02,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-12-18 00:03:02,909 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:03:02,909 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:03:02,942 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-18 00:03:03,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-18 00:03:03,123 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:03:03,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:03:03,124 INFO L85 PathProgramCache]: Analyzing trace with hash 318299511, now seen corresponding path program 1 times [2021-12-18 00:03:03,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:03:03,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [437132417] [2021-12-18 00:03:03,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:03:03,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:03:03,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:03,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:03:03,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:03,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:03:03,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:03,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:03:03,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:03,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 00:03:03,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:03,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:03:03,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:03,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 00:03:03,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:03,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 00:03:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:03,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:03,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:03,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:03:03,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:03,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:03,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:03,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:03:03,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:03,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:03:03,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:03,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:03:03,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:03,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 00:03:03,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:03,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-18 00:03:03,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:03,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:03,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:03,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:03:03,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:03,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:03,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:03,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-18 00:03:03,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:03,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-18 00:03:03,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:03,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 00:03:03,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:03,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-18 00:03:03,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:03,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-18 00:03:03,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:03,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-18 00:03:03,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:03,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-18 00:03:03,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:03,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-18 00:03:03,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:03,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-18 00:03:03,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:03,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-18 00:03:03,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:03,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-18 00:03:03,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:03,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-12-18 00:03:03,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:03,464 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 346 trivial. 0 not checked. [2021-12-18 00:03:03,465 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:03:03,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [437132417] [2021-12-18 00:03:03,465 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [437132417] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:03:03,466 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1934707824] [2021-12-18 00:03:03,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:03:03,466 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:03:03,466 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:03:03,468 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:03:03,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-18 00:03:04,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:04,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 3143 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 00:03:04,085 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:03:04,338 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2021-12-18 00:03:04,338 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:03:04,338 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1934707824] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:03:04,338 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:03:04,339 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2021-12-18 00:03:04,339 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733948703] [2021-12-18 00:03:04,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:03:04,339 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 00:03:04,340 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:03:04,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 00:03:04,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 00:03:04,340 INFO L87 Difference]: Start difference. First operand 212 states and 288 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-18 00:03:04,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:03:04,369 INFO L93 Difference]: Finished difference Result 413 states and 581 transitions. [2021-12-18 00:03:04,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 00:03:04,373 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 222 [2021-12-18 00:03:04,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:03:04,375 INFO L225 Difference]: With dead ends: 413 [2021-12-18 00:03:04,375 INFO L226 Difference]: Without dead ends: 221 [2021-12-18 00:03:04,378 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 281 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-12-18 00:03:04,378 INFO L933 BasicCegarLoop]: 238 mSDtfsCounter, 34 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 00:03:04,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 706 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 00:03:04,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-12-18 00:03:04,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 208. [2021-12-18 00:03:04,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 129 states have (on average 1.1472868217054264) internal successors, (148), 132 states have internal predecessors, (148), 59 states have call successors, (59), 18 states have call predecessors, (59), 19 states have return successors, (74), 58 states have call predecessors, (74), 58 states have call successors, (74) [2021-12-18 00:03:04,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 281 transitions. [2021-12-18 00:03:04,397 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 281 transitions. Word has length 222 [2021-12-18 00:03:04,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:03:04,397 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 281 transitions. [2021-12-18 00:03:04,398 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2021-12-18 00:03:04,398 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 281 transitions. [2021-12-18 00:03:04,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2021-12-18 00:03:04,399 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:03:04,400 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:03:04,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-18 00:03:04,627 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-18 00:03:04,627 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:03:04,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:03:04,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1406308811, now seen corresponding path program 1 times [2021-12-18 00:03:04,628 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:03:04,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [389638226] [2021-12-18 00:03:04,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:03:04,628 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:03:04,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:05,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:03:05,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:05,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:03:05,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:05,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:03:05,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:05,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 00:03:05,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:05,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:03:05,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:05,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 00:03:05,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:05,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 00:03:05,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:05,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:05,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:05,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:03:05,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:05,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:05,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:05,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:03:05,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:05,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:03:05,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:05,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:03:05,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:05,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 00:03:05,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:05,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-18 00:03:05,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:05,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:05,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:05,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:03:05,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:05,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:05,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:05,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-18 00:03:05,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:05,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-18 00:03:05,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:05,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 00:03:05,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:05,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-18 00:03:05,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:05,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-18 00:03:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:05,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-12-18 00:03:05,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:05,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-18 00:03:05,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:05,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-18 00:03:05,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:05,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2021-12-18 00:03:05,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:05,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-18 00:03:05,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:05,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-18 00:03:05,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:05,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2021-12-18 00:03:05,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:05,598 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 60 proven. 20 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2021-12-18 00:03:05,598 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:03:05,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [389638226] [2021-12-18 00:03:05,599 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [389638226] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:03:05,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1629224468] [2021-12-18 00:03:05,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:03:05,600 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:03:05,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:03:05,601 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:03:05,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-18 00:03:06,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:06,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 3138 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-18 00:03:06,295 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:03:06,572 INFO L388 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 [2021-12-18 00:03:07,043 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2021-12-18 00:03:07,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:03:07,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1629224468] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:03:07,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:03:07,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [15] total 26 [2021-12-18 00:03:07,044 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355059635] [2021-12-18 00:03:07,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:03:07,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-18 00:03:07,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:03:07,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-18 00:03:07,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2021-12-18 00:03:07,046 INFO L87 Difference]: Start difference. First operand 208 states and 281 transitions. Second operand has 13 states, 12 states have (on average 7.75) internal successors, (93), 10 states have internal predecessors, (93), 5 states have call successors, (31), 3 states have call predecessors, (31), 5 states have return successors, (29), 6 states have call predecessors, (29), 5 states have call successors, (29) [2021-12-18 00:03:07,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:03:07,212 INFO L93 Difference]: Finished difference Result 384 states and 517 transitions. [2021-12-18 00:03:07,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-18 00:03:07,213 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 7.75) internal successors, (93), 10 states have internal predecessors, (93), 5 states have call successors, (31), 3 states have call predecessors, (31), 5 states have return successors, (29), 6 states have call predecessors, (29), 5 states have call successors, (29) Word has length 222 [2021-12-18 00:03:07,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:03:07,215 INFO L225 Difference]: With dead ends: 384 [2021-12-18 00:03:07,216 INFO L226 Difference]: Without dead ends: 221 [2021-12-18 00:03:07,217 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 272 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2021-12-18 00:03:07,217 INFO L933 BasicCegarLoop]: 235 mSDtfsCounter, 44 mSDsluCounter, 1086 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 1321 SdHoareTripleChecker+Invalid, 120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 00:03:07,218 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [67 Valid, 1321 Invalid, 120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 44 Unchecked, 0.1s Time] [2021-12-18 00:03:07,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2021-12-18 00:03:07,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 213. [2021-12-18 00:03:07,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 213 states, 134 states have (on average 1.1567164179104477) internal successors, (155), 136 states have internal predecessors, (155), 59 states have call successors, (59), 19 states have call predecessors, (59), 19 states have return successors, (73), 58 states have call predecessors, (73), 58 states have call successors, (73) [2021-12-18 00:03:07,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 287 transitions. [2021-12-18 00:03:07,230 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 287 transitions. Word has length 222 [2021-12-18 00:03:07,230 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:03:07,230 INFO L470 AbstractCegarLoop]: Abstraction has 213 states and 287 transitions. [2021-12-18 00:03:07,231 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 7.75) internal successors, (93), 10 states have internal predecessors, (93), 5 states have call successors, (31), 3 states have call predecessors, (31), 5 states have return successors, (29), 6 states have call predecessors, (29), 5 states have call successors, (29) [2021-12-18 00:03:07,231 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 287 transitions. [2021-12-18 00:03:07,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2021-12-18 00:03:07,232 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:03:07,233 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:03:07,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-18 00:03:07,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-18 00:03:07,447 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:03:07,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:03:07,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1500492923, now seen corresponding path program 2 times [2021-12-18 00:03:07,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:03:07,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824614356] [2021-12-18 00:03:07,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:03:07,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:03:07,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:03:07,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:03:07,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:03:07,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 00:03:07,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:03:07,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 00:03:07,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 00:03:07,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:07,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:03:07,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:07,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:03:07,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:03:07,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:03:07,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 00:03:07,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-18 00:03:07,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:07,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:03:07,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:07,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-18 00:03:07,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2021-12-18 00:03:07,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2021-12-18 00:03:07,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2021-12-18 00:03:07,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2021-12-18 00:03:07,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2021-12-18 00:03:07,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2021-12-18 00:03:07,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2021-12-18 00:03:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-18 00:03:07,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2021-12-18 00:03:07,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-18 00:03:07,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-18 00:03:07,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,944 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 20 proven. 29 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2021-12-18 00:03:07,945 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:03:07,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824614356] [2021-12-18 00:03:07,945 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824614356] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:03:07,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785478633] [2021-12-18 00:03:07,945 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 00:03:07,946 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:03:07,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:03:07,947 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:03:07,971 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-18 00:03:08,669 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 00:03:08,670 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 00:03:08,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 3145 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-18 00:03:08,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:03:09,034 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-12-18 00:03:09,034 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:03:09,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785478633] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:03:09,035 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:03:09,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 13 [2021-12-18 00:03:09,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82679354] [2021-12-18 00:03:09,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:03:09,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 00:03:09,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:03:09,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 00:03:09,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-18 00:03:09,036 INFO L87 Difference]: Start difference. First operand 213 states and 287 transitions. Second operand has 9 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-12-18 00:03:09,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:03:09,188 INFO L93 Difference]: Finished difference Result 372 states and 504 transitions. [2021-12-18 00:03:09,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 00:03:09,189 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 226 [2021-12-18 00:03:09,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:03:09,190 INFO L225 Difference]: With dead ends: 372 [2021-12-18 00:03:09,190 INFO L226 Difference]: Without dead ends: 211 [2021-12-18 00:03:09,191 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 297 GetRequests, 281 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-12-18 00:03:09,192 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 12 mSDsluCounter, 1560 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1790 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 00:03:09,192 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1790 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 00:03:09,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 211 states. [2021-12-18 00:03:09,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 211 to 208. [2021-12-18 00:03:09,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 208 states, 129 states have (on average 1.1472868217054264) internal successors, (148), 132 states have internal predecessors, (148), 59 states have call successors, (59), 18 states have call predecessors, (59), 19 states have return successors, (72), 58 states have call predecessors, (72), 58 states have call successors, (72) [2021-12-18 00:03:09,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 208 states to 208 states and 279 transitions. [2021-12-18 00:03:09,209 INFO L78 Accepts]: Start accepts. Automaton has 208 states and 279 transitions. Word has length 226 [2021-12-18 00:03:09,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:03:09,209 INFO L470 AbstractCegarLoop]: Abstraction has 208 states and 279 transitions. [2021-12-18 00:03:09,210 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2021-12-18 00:03:09,210 INFO L276 IsEmpty]: Start isEmpty. Operand 208 states and 279 transitions. [2021-12-18 00:03:09,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2021-12-18 00:03:09,211 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:03:09,211 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:03:09,244 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-18 00:03:09,427 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:03:09,427 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:03:09,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:03:09,428 INFO L85 PathProgramCache]: Analyzing trace with hash 2088885862, now seen corresponding path program 3 times [2021-12-18 00:03:09,428 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:03:09,428 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013273145] [2021-12-18 00:03:09,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:03:09,428 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:03:09,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:09,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:03:09,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:09,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:03:09,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:09,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:03:09,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:09,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 00:03:09,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:09,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:03:09,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:09,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 00:03:09,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:09,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 00:03:09,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:09,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:09,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:09,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:03:09,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:09,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:09,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:09,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:03:09,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:09,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:03:09,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:09,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:03:09,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:09,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 00:03:09,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:09,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-18 00:03:09,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:09,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:09,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:09,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:03:09,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:09,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:09,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:09,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-18 00:03:09,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:09,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 00:03:09,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:10,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-18 00:03:10,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:10,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-18 00:03:10,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:10,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-18 00:03:10,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:10,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-18 00:03:10,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:10,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-18 00:03:10,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:10,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-18 00:03:10,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:10,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-18 00:03:10,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:10,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-18 00:03:10,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:10,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-18 00:03:10,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:10,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2021-12-18 00:03:10,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:10,247 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 60 proven. 20 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2021-12-18 00:03:10,247 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:03:10,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013273145] [2021-12-18 00:03:10,247 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013273145] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:03:10,247 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [537968337] [2021-12-18 00:03:10,248 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-18 00:03:10,248 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:03:10,248 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:03:10,249 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:03:10,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-18 00:03:11,395 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-18 00:03:11,395 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 00:03:11,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 2575 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-18 00:03:11,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:03:12,489 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 163 proven. 4 refuted. 0 times theorem prover too weak. 233 trivial. 0 not checked. [2021-12-18 00:03:12,489 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:03:12,964 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-12-18 00:03:12,965 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-12-18 00:03:12,975 INFO L354 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2021-12-18 00:03:12,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2021-12-18 00:03:13,237 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 88 proven. 10 refuted. 0 times theorem prover too weak. 302 trivial. 0 not checked. [2021-12-18 00:03:13,238 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [537968337] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 00:03:13,238 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 00:03:13,238 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 11] total 30 [2021-12-18 00:03:13,238 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [855384154] [2021-12-18 00:03:13,238 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 00:03:13,243 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2021-12-18 00:03:13,244 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:03:13,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2021-12-18 00:03:13,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=778, Unknown=0, NotChecked=0, Total=870 [2021-12-18 00:03:13,245 INFO L87 Difference]: Start difference. First operand 208 states and 279 transitions. Second operand has 30 states, 28 states have (on average 4.428571428571429) internal successors, (124), 25 states have internal predecessors, (124), 7 states have call successors, (43), 7 states have call predecessors, (43), 6 states have return successors, (36), 5 states have call predecessors, (36), 6 states have call successors, (36) [2021-12-18 00:03:16,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:03:16,806 INFO L93 Difference]: Finished difference Result 499 states and 694 transitions. [2021-12-18 00:03:16,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2021-12-18 00:03:16,806 INFO L78 Accepts]: Start accepts. Automaton has has 30 states, 28 states have (on average 4.428571428571429) internal successors, (124), 25 states have internal predecessors, (124), 7 states have call successors, (43), 7 states have call predecessors, (43), 6 states have return successors, (36), 5 states have call predecessors, (36), 6 states have call successors, (36) Word has length 228 [2021-12-18 00:03:16,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:03:16,809 INFO L225 Difference]: With dead ends: 499 [2021-12-18 00:03:16,809 INFO L226 Difference]: Without dead ends: 371 [2021-12-18 00:03:16,811 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 573 GetRequests, 502 SyntacticMatches, 8 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 929 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=567, Invalid=3593, Unknown=0, NotChecked=0, Total=4160 [2021-12-18 00:03:16,812 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 481 mSDsluCounter, 1410 mSDsCounter, 0 mSdLazyCounter, 2565 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 514 SdHoareTripleChecker+Valid, 1639 SdHoareTripleChecker+Invalid, 3688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 2565 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 670 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-18 00:03:16,812 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [514 Valid, 1639 Invalid, 3688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [453 Valid, 2565 Invalid, 0 Unknown, 670 Unchecked, 2.1s Time] [2021-12-18 00:03:16,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 371 states. [2021-12-18 00:03:16,831 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 371 to 318. [2021-12-18 00:03:16,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 212 states have (on average 1.1603773584905661) internal successors, (246), 217 states have internal predecessors, (246), 79 states have call successors, (79), 22 states have call predecessors, (79), 26 states have return successors, (115), 79 states have call predecessors, (115), 78 states have call successors, (115) [2021-12-18 00:03:16,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 440 transitions. [2021-12-18 00:03:16,834 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 440 transitions. Word has length 228 [2021-12-18 00:03:16,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:03:16,834 INFO L470 AbstractCegarLoop]: Abstraction has 318 states and 440 transitions. [2021-12-18 00:03:16,835 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 28 states have (on average 4.428571428571429) internal successors, (124), 25 states have internal predecessors, (124), 7 states have call successors, (43), 7 states have call predecessors, (43), 6 states have return successors, (36), 5 states have call predecessors, (36), 6 states have call successors, (36) [2021-12-18 00:03:16,835 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 440 transitions. [2021-12-18 00:03:16,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-12-18 00:03:16,837 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:03:16,837 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:03:16,863 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-18 00:03:17,051 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-18 00:03:17,052 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:03:17,052 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:03:17,052 INFO L85 PathProgramCache]: Analyzing trace with hash 1403347118, now seen corresponding path program 4 times [2021-12-18 00:03:17,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:03:17,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886099637] [2021-12-18 00:03:17,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:03:17,053 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:03:17,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:17,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:03:17,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:17,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:03:17,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:17,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:03:17,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:17,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 00:03:17,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:17,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:03:17,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:17,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 00:03:17,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:17,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 00:03:17,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:17,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:17,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:17,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:03:17,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:17,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:17,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:17,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:03:17,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:17,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:03:17,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:17,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:03:17,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:17,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 00:03:17,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:17,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-18 00:03:17,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:17,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:17,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:17,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:03:17,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:17,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:17,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:17,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-18 00:03:17,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:17,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 00:03:17,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:17,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-18 00:03:17,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:17,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-18 00:03:17,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:17,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-18 00:03:17,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:17,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-18 00:03:17,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:17,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-18 00:03:17,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:17,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2021-12-18 00:03:17,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:17,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2021-12-18 00:03:17,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:17,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-18 00:03:17,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:17,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-18 00:03:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:17,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-12-18 00:03:17,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:17,867 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 40 proven. 40 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2021-12-18 00:03:17,868 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:03:17,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886099637] [2021-12-18 00:03:17,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886099637] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:03:17,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245227466] [2021-12-18 00:03:17,868 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2021-12-18 00:03:17,868 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:03:17,868 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:03:17,869 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:03:17,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-18 00:03:18,533 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2021-12-18 00:03:18,533 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 00:03:18,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 3149 conjuncts, 40 conjunts are in the unsatisfiable core [2021-12-18 00:03:18,558 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:03:18,989 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:03:18,990 INFO L388 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 22 treesize of output 23 [2021-12-18 00:03:18,993 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2021-12-18 00:03:19,524 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 280 proven. 18 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-12-18 00:03:19,524 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:03:19,779 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2021-12-18 00:03:20,122 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-12-18 00:03:20,123 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2021-12-18 00:03:20,286 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 36 proven. 68 refuted. 0 times theorem prover too weak. 308 trivial. 0 not checked. [2021-12-18 00:03:20,286 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245227466] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 00:03:20,286 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 00:03:20,286 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 11] total 32 [2021-12-18 00:03:20,286 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903846799] [2021-12-18 00:03:20,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 00:03:20,287 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-18 00:03:20,287 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:03:20,288 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-18 00:03:20,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=96, Invalid=896, Unknown=0, NotChecked=0, Total=992 [2021-12-18 00:03:20,288 INFO L87 Difference]: Start difference. First operand 318 states and 440 transitions. Second operand has 32 states, 31 states have (on average 5.419354838709677) internal successors, (168), 27 states have internal predecessors, (168), 11 states have call successors, (65), 9 states have call predecessors, (65), 9 states have return successors, (60), 10 states have call predecessors, (60), 10 states have call successors, (60) [2021-12-18 00:03:24,890 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:03:24,890 INFO L93 Difference]: Finished difference Result 771 states and 1124 transitions. [2021-12-18 00:03:24,890 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2021-12-18 00:03:24,890 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 31 states have (on average 5.419354838709677) internal successors, (168), 27 states have internal predecessors, (168), 11 states have call successors, (65), 9 states have call predecessors, (65), 9 states have return successors, (60), 10 states have call predecessors, (60), 10 states have call successors, (60) Word has length 232 [2021-12-18 00:03:24,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:03:24,894 INFO L225 Difference]: With dead ends: 771 [2021-12-18 00:03:24,894 INFO L226 Difference]: Without dead ends: 578 [2021-12-18 00:03:24,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 581 GetRequests, 505 SyntacticMatches, 9 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1178 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=496, Invalid=4196, Unknown=0, NotChecked=0, Total=4692 [2021-12-18 00:03:24,897 INFO L933 BasicCegarLoop]: 261 mSDtfsCounter, 323 mSDsluCounter, 1621 mSDsCounter, 0 mSdLazyCounter, 4516 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 395 SdHoareTripleChecker+Valid, 1882 SdHoareTripleChecker+Invalid, 5647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 4516 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 878 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-18 00:03:24,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [395 Valid, 1882 Invalid, 5647 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [253 Valid, 4516 Invalid, 0 Unknown, 878 Unchecked, 3.3s Time] [2021-12-18 00:03:24,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2021-12-18 00:03:24,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 437. [2021-12-18 00:03:24,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 437 states, 301 states have (on average 1.149501661129568) internal successors, (346), 311 states have internal predecessors, (346), 99 states have call successors, (99), 27 states have call predecessors, (99), 36 states have return successors, (173), 99 states have call predecessors, (173), 98 states have call successors, (173) [2021-12-18 00:03:24,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 437 states to 437 states and 618 transitions. [2021-12-18 00:03:24,928 INFO L78 Accepts]: Start accepts. Automaton has 437 states and 618 transitions. Word has length 232 [2021-12-18 00:03:24,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:03:24,929 INFO L470 AbstractCegarLoop]: Abstraction has 437 states and 618 transitions. [2021-12-18 00:03:24,929 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 31 states have (on average 5.419354838709677) internal successors, (168), 27 states have internal predecessors, (168), 11 states have call successors, (65), 9 states have call predecessors, (65), 9 states have return successors, (60), 10 states have call predecessors, (60), 10 states have call successors, (60) [2021-12-18 00:03:24,930 INFO L276 IsEmpty]: Start isEmpty. Operand 437 states and 618 transitions. [2021-12-18 00:03:24,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-12-18 00:03:24,932 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:03:24,932 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 4, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:03:24,965 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2021-12-18 00:03:25,147 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-18 00:03:25,148 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:03:25,148 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:03:25,148 INFO L85 PathProgramCache]: Analyzing trace with hash -1004552656, now seen corresponding path program 5 times [2021-12-18 00:03:25,148 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:03:25,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252453079] [2021-12-18 00:03:25,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:03:25,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:03:25,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:25,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:03:25,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:25,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:03:25,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:25,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:03:25,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:25,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 00:03:25,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:25,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:03:25,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:25,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 00:03:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:25,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 00:03:25,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:25,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:25,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:25,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:03:25,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:25,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:25,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:25,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:03:25,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:25,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:03:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:25,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:03:25,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:25,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 00:03:25,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:25,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-18 00:03:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:25,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:25,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:25,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:03:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:25,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:25,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:25,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-18 00:03:25,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:25,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 00:03:25,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:25,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-18 00:03:25,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:25,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-18 00:03:25,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:25,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-18 00:03:25,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:25,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-18 00:03:25,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:25,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-18 00:03:25,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:25,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-18 00:03:25,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:25,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-18 00:03:25,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:25,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-18 00:03:25,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:25,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-18 00:03:25,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:25,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-12-18 00:03:25,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:25,950 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 47 proven. 27 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2021-12-18 00:03:25,950 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:03:25,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252453079] [2021-12-18 00:03:25,950 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252453079] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:03:25,950 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306031056] [2021-12-18 00:03:25,951 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2021-12-18 00:03:25,951 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:03:25,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:03:25,952 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:03:25,953 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-18 00:03:26,378 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 4 check-sat command(s) [2021-12-18 00:03:26,378 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 00:03:26,382 INFO L263 TraceCheckSpWp]: Trace formula consists of 576 conjuncts, 44 conjunts are in the unsatisfiable core [2021-12-18 00:03:26,386 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:03:32,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-12-18 00:03:32,891 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:03:32,892 INFO L388 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 22 treesize of output 23 [2021-12-18 00:03:33,966 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 283 proven. 23 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-12-18 00:03:33,966 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:03:34,252 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 19 [2021-12-18 00:03:34,617 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-12-18 00:03:34,618 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2021-12-18 00:03:34,786 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 40 proven. 72 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2021-12-18 00:03:34,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306031056] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 00:03:34,786 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 00:03:34,786 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 14, 11] total 39 [2021-12-18 00:03:34,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535265764] [2021-12-18 00:03:34,787 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 00:03:34,787 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-12-18 00:03:34,787 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:03:34,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-12-18 00:03:34,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1352, Unknown=3, NotChecked=0, Total=1482 [2021-12-18 00:03:34,788 INFO L87 Difference]: Start difference. First operand 437 states and 618 transitions. Second operand has 39 states, 38 states have (on average 5.026315789473684) internal successors, (191), 34 states have internal predecessors, (191), 10 states have call successors, (60), 9 states have call predecessors, (60), 14 states have return successors, (57), 11 states have call predecessors, (57), 10 states have call successors, (57) [2021-12-18 00:03:51,575 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:03:51,575 INFO L93 Difference]: Finished difference Result 946 states and 1431 transitions. [2021-12-18 00:03:51,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-12-18 00:03:51,575 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 38 states have (on average 5.026315789473684) internal successors, (191), 34 states have internal predecessors, (191), 10 states have call successors, (60), 9 states have call predecessors, (60), 14 states have return successors, (57), 11 states have call predecessors, (57), 10 states have call successors, (57) Word has length 232 [2021-12-18 00:03:51,576 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:03:51,580 INFO L225 Difference]: With dead ends: 946 [2021-12-18 00:03:51,580 INFO L226 Difference]: Without dead ends: 614 [2021-12-18 00:03:51,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 593 GetRequests, 505 SyntacticMatches, 11 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1546 ImplicationChecksByTransitivity, 21.0s TimeCoverageRelationStatistics Valid=509, Invalid=5644, Unknown=9, NotChecked=0, Total=6162 [2021-12-18 00:03:51,584 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 335 mSDsluCounter, 3096 mSDsCounter, 0 mSdLazyCounter, 4553 mSolverCounterSat, 286 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 362 SdHoareTripleChecker+Valid, 3367 SdHoareTripleChecker+Invalid, 5718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 286 IncrementalHoareTripleChecker+Valid, 4553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 879 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2021-12-18 00:03:51,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [362 Valid, 3367 Invalid, 5718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [286 Valid, 4553 Invalid, 0 Unknown, 879 Unchecked, 3.1s Time] [2021-12-18 00:03:51,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 614 states. [2021-12-18 00:03:51,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 614 to 474. [2021-12-18 00:03:51,647 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 474 states, 327 states have (on average 1.1345565749235473) internal successors, (371), 338 states have internal predecessors, (371), 105 states have call successors, (105), 31 states have call predecessors, (105), 41 states have return successors, (202), 105 states have call predecessors, (202), 104 states have call successors, (202) [2021-12-18 00:03:51,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 474 states to 474 states and 678 transitions. [2021-12-18 00:03:51,650 INFO L78 Accepts]: Start accepts. Automaton has 474 states and 678 transitions. Word has length 232 [2021-12-18 00:03:51,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:03:51,650 INFO L470 AbstractCegarLoop]: Abstraction has 474 states and 678 transitions. [2021-12-18 00:03:51,650 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 38 states have (on average 5.026315789473684) internal successors, (191), 34 states have internal predecessors, (191), 10 states have call successors, (60), 9 states have call predecessors, (60), 14 states have return successors, (57), 11 states have call predecessors, (57), 10 states have call successors, (57) [2021-12-18 00:03:51,650 INFO L276 IsEmpty]: Start isEmpty. Operand 474 states and 678 transitions. [2021-12-18 00:03:51,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2021-12-18 00:03:51,653 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:03:51,653 INFO L514 BasicCegarLoop]: 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, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:03:51,679 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-12-18 00:03:51,853 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:03:51,853 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:03:51,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:03:51,855 INFO L85 PathProgramCache]: Analyzing trace with hash 1394988660, now seen corresponding path program 6 times [2021-12-18 00:03:51,855 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:03:51,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1127400115] [2021-12-18 00:03:51,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:03:51,855 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:03:52,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:52,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:03:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:52,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:03:52,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:52,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:03:52,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:52,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 00:03:52,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:52,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:03:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:52,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 00:03:52,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:52,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 00:03:52,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:52,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:52,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:52,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:03:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:52,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:52,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:52,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:03:52,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:52,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:03:52,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:52,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:03:52,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:52,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 00:03:52,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:52,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-18 00:03:52,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:52,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:52,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:52,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:03:52,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:52,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:52,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:52,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-18 00:03:52,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:52,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 00:03:52,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:52,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-18 00:03:52,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:52,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-18 00:03:52,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:52,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-18 00:03:52,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:52,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-18 00:03:52,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:52,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-18 00:03:52,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:52,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2021-12-18 00:03:52,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:52,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-18 00:03:52,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:52,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2021-12-18 00:03:52,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:52,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2021-12-18 00:03:52,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:52,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-12-18 00:03:52,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:52,648 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 47 proven. 27 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2021-12-18 00:03:52,648 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:03:52,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1127400115] [2021-12-18 00:03:52,649 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1127400115] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:03:52,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466545025] [2021-12-18 00:03:52,649 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2021-12-18 00:03:52,649 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:03:52,649 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:03:52,652 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:03:52,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-18 00:03:53,766 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2021-12-18 00:03:53,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 00:03:53,780 INFO L263 TraceCheckSpWp]: Trace formula consists of 2946 conjuncts, 83 conjunts are in the unsatisfiable core [2021-12-18 00:03:53,785 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:04:00,309 INFO L354 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2021-12-18 00:04:00,310 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 35 [2021-12-18 00:04:00,315 INFO L388 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 19 [2021-12-18 00:04:00,329 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2021-12-18 00:04:04,172 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 219 proven. 74 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-12-18 00:04:04,172 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:04:07,126 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 72 proven. 30 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2021-12-18 00:04:07,126 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466545025] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 00:04:07,127 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 00:04:07,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 25, 14] total 54 [2021-12-18 00:04:07,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20490961] [2021-12-18 00:04:07,127 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 00:04:07,128 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-12-18 00:04:07,128 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:04:07,128 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-12-18 00:04:07,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2650, Unknown=4, NotChecked=0, Total=2862 [2021-12-18 00:04:07,129 INFO L87 Difference]: Start difference. First operand 474 states and 678 transitions. Second operand has 54 states, 51 states have (on average 4.137254901960785) internal successors, (211), 46 states have internal predecessors, (211), 15 states have call successors, (80), 11 states have call predecessors, (80), 13 states have return successors, (75), 14 states have call predecessors, (75), 15 states have call successors, (75) [2021-12-18 00:04:32,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:04:32,069 INFO L93 Difference]: Finished difference Result 1214 states and 1724 transitions. [2021-12-18 00:04:32,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2021-12-18 00:04:32,070 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 51 states have (on average 4.137254901960785) internal successors, (211), 46 states have internal predecessors, (211), 15 states have call successors, (80), 11 states have call predecessors, (80), 13 states have return successors, (75), 14 states have call predecessors, (75), 15 states have call successors, (75) Word has length 232 [2021-12-18 00:04:32,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:04:32,075 INFO L225 Difference]: With dead ends: 1214 [2021-12-18 00:04:32,075 INFO L226 Difference]: Without dead ends: 922 [2021-12-18 00:04:32,079 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 628 GetRequests, 489 SyntacticMatches, 18 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4172 ImplicationChecksByTransitivity, 31.1s TimeCoverageRelationStatistics Valid=1299, Invalid=13695, Unknown=12, NotChecked=0, Total=15006 [2021-12-18 00:04:32,080 INFO L933 BasicCegarLoop]: 355 mSDtfsCounter, 768 mSDsluCounter, 3649 mSDsCounter, 0 mSdLazyCounter, 9371 mSolverCounterSat, 386 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 831 SdHoareTripleChecker+Valid, 4004 SdHoareTripleChecker+Invalid, 13237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 386 IncrementalHoareTripleChecker+Valid, 9371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3480 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-12-18 00:04:32,080 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [831 Valid, 4004 Invalid, 13237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [386 Valid, 9371 Invalid, 0 Unknown, 3480 Unchecked, 5.6s Time] [2021-12-18 00:04:32,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2021-12-18 00:04:32,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 731. [2021-12-18 00:04:32,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 731 states, 522 states have (on average 1.1398467432950192) internal successors, (595), 538 states have internal predecessors, (595), 148 states have call successors, (148), 47 states have call predecessors, (148), 60 states have return successors, (276), 146 states have call predecessors, (276), 147 states have call successors, (276) [2021-12-18 00:04:32,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 731 states to 731 states and 1019 transitions. [2021-12-18 00:04:32,124 INFO L78 Accepts]: Start accepts. Automaton has 731 states and 1019 transitions. Word has length 232 [2021-12-18 00:04:32,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:04:32,125 INFO L470 AbstractCegarLoop]: Abstraction has 731 states and 1019 transitions. [2021-12-18 00:04:32,125 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 51 states have (on average 4.137254901960785) internal successors, (211), 46 states have internal predecessors, (211), 15 states have call successors, (80), 11 states have call predecessors, (80), 13 states have return successors, (75), 14 states have call predecessors, (75), 15 states have call successors, (75) [2021-12-18 00:04:32,126 INFO L276 IsEmpty]: Start isEmpty. Operand 731 states and 1019 transitions. [2021-12-18 00:04:32,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-12-18 00:04:32,129 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:04:32,130 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:04:32,155 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-12-18 00:04:32,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:04:32,343 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:04:32,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:04:32,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1183448235, now seen corresponding path program 1 times [2021-12-18 00:04:32,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:04:32,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [342235030] [2021-12-18 00:04:32,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:04:32,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:04:32,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:32,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:04:32,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:32,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:04:32,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:32,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:04:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:32,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 00:04:32,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:32,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:04:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:32,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 00:04:32,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:32,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 00:04:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:32,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:04:32,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:32,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:04:32,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:32,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:04:32,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:32,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:04:32,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:32,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:04:32,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:32,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:04:32,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:32,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 00:04:32,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:32,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-18 00:04:32,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:32,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:04:32,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:32,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:04:32,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:32,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:04:32,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:32,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-18 00:04:32,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:32,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 00:04:32,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:32,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-18 00:04:32,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:32,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-18 00:04:32,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:32,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-18 00:04:32,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:32,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-18 00:04:32,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:32,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-18 00:04:32,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:32,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-18 00:04:32,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:32,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-18 00:04:32,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:32,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-18 00:04:32,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:32,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-18 00:04:32,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:32,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-12-18 00:04:32,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:32,963 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 74 proven. 26 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2021-12-18 00:04:32,964 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:04:32,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [342235030] [2021-12-18 00:04:32,964 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [342235030] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:04:32,964 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2046616807] [2021-12-18 00:04:32,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:04:32,964 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:04:32,965 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:04:32,966 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:04:32,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-18 00:04:33,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:33,581 INFO L263 TraceCheckSpWp]: Trace formula consists of 3161 conjuncts, 95 conjunts are in the unsatisfiable core [2021-12-18 00:04:33,586 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:04:36,189 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 00:04:36,207 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4056 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_ensure_byte_buf_has_allocated_buffer_member_#in~buf.base| v_ArrVal_4056))) is different from true [2021-12-18 00:04:36,222 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 00:04:36,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 25 [2021-12-18 00:04:36,229 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2021-12-18 00:04:36,596 INFO L354 Elim1Store]: treesize reduction 44, result has 38.0 percent of original size [2021-12-18 00:04:36,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 62 [2021-12-18 00:04:36,601 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:04:36,603 INFO L388 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 21 [2021-12-18 00:04:36,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-12-18 00:04:37,811 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 132 proven. 110 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-12-18 00:04:37,811 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:04:38,191 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 00:04:38,191 INFO L388 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 2 case distinctions, treesize of input 27 treesize of output 34 [2021-12-18 00:04:38,199 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_16| Int) (v_arrayElimArr_1 (Array Int Int))) (or (not (= (select v_arrayElimArr_1 16) (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| 16)))) (not (= 0 (mod (select (select (store |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_16| v_arrayElimArr_1) |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| 16)) 18446744073709551616))))) is different from false [2021-12-18 00:04:38,213 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2046616807] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:04:38,214 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 00:04:38,214 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 24] total 37 [2021-12-18 00:04:38,214 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916103801] [2021-12-18 00:04:38,214 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 00:04:38,214 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2021-12-18 00:04:38,214 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:04:38,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2021-12-18 00:04:38,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=1589, Unknown=4, NotChecked=162, Total=1892 [2021-12-18 00:04:38,215 INFO L87 Difference]: Start difference. First operand 731 states and 1019 transitions. Second operand has 37 states, 34 states have (on average 5.029411764705882) internal successors, (171), 30 states have internal predecessors, (171), 16 states have call successors, (57), 9 states have call predecessors, (57), 7 states have return successors, (53), 14 states have call predecessors, (53), 15 states have call successors, (53) [2021-12-18 00:04:46,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:04:46,075 INFO L93 Difference]: Finished difference Result 1629 states and 2437 transitions. [2021-12-18 00:04:46,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 72 states. [2021-12-18 00:04:46,076 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 34 states have (on average 5.029411764705882) internal successors, (171), 30 states have internal predecessors, (171), 16 states have call successors, (57), 9 states have call predecessors, (57), 7 states have return successors, (53), 14 states have call predecessors, (53), 15 states have call successors, (53) Word has length 234 [2021-12-18 00:04:46,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:04:46,083 INFO L225 Difference]: With dead ends: 1629 [2021-12-18 00:04:46,084 INFO L226 Difference]: Without dead ends: 1396 [2021-12-18 00:04:46,087 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 462 GetRequests, 343 SyntacticMatches, 27 SemanticMatches, 92 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2539 ImplicationChecksByTransitivity, 7.5s TimeCoverageRelationStatistics Valid=791, Invalid=7582, Unknown=7, NotChecked=362, Total=8742 [2021-12-18 00:04:46,088 INFO L933 BasicCegarLoop]: 301 mSDtfsCounter, 591 mSDsluCounter, 2656 mSDsCounter, 0 mSdLazyCounter, 5931 mSolverCounterSat, 601 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 651 SdHoareTripleChecker+Valid, 2957 SdHoareTripleChecker+Invalid, 8506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 601 IncrementalHoareTripleChecker+Valid, 5931 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1974 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-12-18 00:04:46,088 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [651 Valid, 2957 Invalid, 8506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [601 Valid, 5931 Invalid, 0 Unknown, 1974 Unchecked, 3.8s Time] [2021-12-18 00:04:46,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1396 states. [2021-12-18 00:04:46,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1396 to 1167. [2021-12-18 00:04:46,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 806 states have (on average 1.15136476426799) internal successors, (928), 833 states have internal predecessors, (928), 271 states have call successors, (271), 65 states have call predecessors, (271), 89 states have return successors, (531), 269 states have call predecessors, (531), 270 states have call successors, (531) [2021-12-18 00:04:46,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1730 transitions. [2021-12-18 00:04:46,162 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1730 transitions. Word has length 234 [2021-12-18 00:04:46,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:04:46,163 INFO L470 AbstractCegarLoop]: Abstraction has 1167 states and 1730 transitions. [2021-12-18 00:04:46,163 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 34 states have (on average 5.029411764705882) internal successors, (171), 30 states have internal predecessors, (171), 16 states have call successors, (57), 9 states have call predecessors, (57), 7 states have return successors, (53), 14 states have call predecessors, (53), 15 states have call successors, (53) [2021-12-18 00:04:46,163 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1730 transitions. [2021-12-18 00:04:46,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2021-12-18 00:04:46,169 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:04:46,169 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:04:46,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-12-18 00:04:46,383 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:04:46,383 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:04:46,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:04:46,384 INFO L85 PathProgramCache]: Analyzing trace with hash 778126423, now seen corresponding path program 1 times [2021-12-18 00:04:46,384 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:04:46,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1533222734] [2021-12-18 00:04:46,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:04:46,384 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:04:46,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:46,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:04:46,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:46,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:04:46,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:46,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:04:46,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:46,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 00:04:46,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:46,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:04:46,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:46,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 00:04:46,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:46,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 00:04:46,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:46,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:04:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:46,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:04:46,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:46,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:04:46,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:46,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:04:46,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:46,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:04:46,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:46,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:04:46,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:46,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 00:04:46,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:46,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-18 00:04:46,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:46,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:04:46,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:46,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:04:46,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:46,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:04:46,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:46,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-18 00:04:46,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:46,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 00:04:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:46,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-18 00:04:46,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:46,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-18 00:04:46,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:46,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-18 00:04:46,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:46,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-18 00:04:46,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:47,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-18 00:04:47,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:47,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-18 00:04:47,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:47,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-18 00:04:47,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:47,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-18 00:04:47,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:47,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-18 00:04:47,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:47,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-12-18 00:04:47,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:47,149 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 51 proven. 27 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2021-12-18 00:04:47,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:04:47,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1533222734] [2021-12-18 00:04:47,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1533222734] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:04:47,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055422468] [2021-12-18 00:04:47,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:04:47,150 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:04:47,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:04:47,151 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) [2021-12-18 00:04:47,153 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-18 00:04:47,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:47,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 3166 conjuncts, 58 conjunts are in the unsatisfiable core [2021-12-18 00:04:47,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:04:48,099 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:04:48,100 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:04:48,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:04:48,101 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:04:48,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:04:48,102 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:04:48,111 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-12-18 00:04:48,111 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 49 [2021-12-18 00:04:48,659 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 290 proven. 16 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-12-18 00:04:48,659 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:04:48,979 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055422468] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:04:48,979 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 00:04:48,979 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 14] total 29 [2021-12-18 00:04:48,979 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587786216] [2021-12-18 00:04:48,979 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 00:04:48,980 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2021-12-18 00:04:48,980 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:04:48,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2021-12-18 00:04:48,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=895, Unknown=0, NotChecked=0, Total=992 [2021-12-18 00:04:48,981 INFO L87 Difference]: Start difference. First operand 1167 states and 1730 transitions. Second operand has 29 states, 27 states have (on average 5.62962962962963) internal successors, (152), 25 states have internal predecessors, (152), 10 states have call successors, (46), 7 states have call predecessors, (46), 11 states have return successors, (42), 9 states have call predecessors, (42), 10 states have call successors, (42) [2021-12-18 00:04:51,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:04:51,572 INFO L93 Difference]: Finished difference Result 1703 states and 2392 transitions. [2021-12-18 00:04:51,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-12-18 00:04:51,573 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 27 states have (on average 5.62962962962963) internal successors, (152), 25 states have internal predecessors, (152), 10 states have call successors, (46), 7 states have call predecessors, (46), 11 states have return successors, (42), 9 states have call predecessors, (42), 10 states have call successors, (42) Word has length 234 [2021-12-18 00:04:51,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:04:51,580 INFO L225 Difference]: With dead ends: 1703 [2021-12-18 00:04:51,581 INFO L226 Difference]: Without dead ends: 1318 [2021-12-18 00:04:51,583 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 426 GetRequests, 365 SyntacticMatches, 11 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 656 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=275, Invalid=2377, Unknown=0, NotChecked=0, Total=2652 [2021-12-18 00:04:51,584 INFO L933 BasicCegarLoop]: 268 mSDtfsCounter, 176 mSDsluCounter, 2256 mSDsCounter, 0 mSdLazyCounter, 3437 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 2524 SdHoareTripleChecker+Invalid, 4602 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 3437 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1048 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-12-18 00:04:51,584 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [216 Valid, 2524 Invalid, 4602 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 3437 Invalid, 0 Unknown, 1048 Unchecked, 2.0s Time] [2021-12-18 00:04:51,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1318 states. [2021-12-18 00:04:51,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1318 to 1180. [2021-12-18 00:04:51,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1180 states, 832 states have (on average 1.1382211538461537) internal successors, (947), 862 states have internal predecessors, (947), 256 states have call successors, (256), 63 states have call predecessors, (256), 91 states have return successors, (491), 255 states have call predecessors, (491), 255 states have call successors, (491) [2021-12-18 00:04:51,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1180 states to 1180 states and 1694 transitions. [2021-12-18 00:04:51,650 INFO L78 Accepts]: Start accepts. Automaton has 1180 states and 1694 transitions. Word has length 234 [2021-12-18 00:04:51,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:04:51,651 INFO L470 AbstractCegarLoop]: Abstraction has 1180 states and 1694 transitions. [2021-12-18 00:04:51,651 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 27 states have (on average 5.62962962962963) internal successors, (152), 25 states have internal predecessors, (152), 10 states have call successors, (46), 7 states have call predecessors, (46), 11 states have return successors, (42), 9 states have call predecessors, (42), 10 states have call successors, (42) [2021-12-18 00:04:51,651 INFO L276 IsEmpty]: Start isEmpty. Operand 1180 states and 1694 transitions. [2021-12-18 00:04:51,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2021-12-18 00:04:51,657 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:04:51,657 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 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, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:04:51,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-12-18 00:04:51,871 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2021-12-18 00:04:51,871 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:04:51,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:04:51,872 INFO L85 PathProgramCache]: Analyzing trace with hash 2114323613, now seen corresponding path program 1 times [2021-12-18 00:04:51,872 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:04:51,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1509020036] [2021-12-18 00:04:51,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:04:51,872 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:04:52,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:52,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:04:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:52,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:04:52,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:52,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:04:52,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:52,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 00:04:52,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:52,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:04:52,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:52,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 00:04:52,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:52,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 00:04:52,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:52,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:04:52,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:52,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:04:52,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:52,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:04:52,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:52,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:04:52,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:52,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:04:52,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:52,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:04:52,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:52,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 00:04:52,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:52,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-18 00:04:52,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:52,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:04:52,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:52,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:04:52,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:52,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:04:52,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:52,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-18 00:04:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:52,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 00:04:52,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:52,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-18 00:04:52,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:52,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-18 00:04:52,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:52,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:04:52,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:52,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:04:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:52,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-18 00:04:52,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:52,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-18 00:04:52,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:52,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-18 00:04:52,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:52,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-12-18 00:04:52,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:52,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 00:04:52,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:52,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2021-12-18 00:04:52,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:52,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-12-18 00:04:52,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:52,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-12-18 00:04:52,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:52,389 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 38 proven. 15 refuted. 0 times theorem prover too weak. 411 trivial. 0 not checked. [2021-12-18 00:04:52,389 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:04:52,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1509020036] [2021-12-18 00:04:52,389 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1509020036] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:04:52,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287258496] [2021-12-18 00:04:52,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:04:52,389 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:04:52,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:04:52,390 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:04:52,391 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-18 00:04:52,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:52,968 INFO L263 TraceCheckSpWp]: Trace formula consists of 3207 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-18 00:04:52,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:04:53,341 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2021-12-18 00:04:53,507 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 252 proven. 8 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-12-18 00:04:53,507 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:04:53,984 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-12-18 00:04:53,984 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 19 [2021-12-18 00:04:54,161 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 16 proven. 52 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-12-18 00:04:54,161 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287258496] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 00:04:54,161 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 00:04:54,162 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 27 [2021-12-18 00:04:54,163 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310006500] [2021-12-18 00:04:54,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 00:04:54,164 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-18 00:04:54,164 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:04:54,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-18 00:04:54,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=635, Unknown=0, NotChecked=0, Total=702 [2021-12-18 00:04:54,165 INFO L87 Difference]: Start difference. First operand 1180 states and 1694 transitions. Second operand has 27 states, 25 states have (on average 5.72) internal successors, (143), 23 states have internal predecessors, (143), 8 states have call successors, (64), 8 states have call predecessors, (64), 9 states have return successors, (60), 7 states have call predecessors, (60), 8 states have call successors, (60) [2021-12-18 00:04:56,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:04:56,959 INFO L93 Difference]: Finished difference Result 1976 states and 2803 transitions. [2021-12-18 00:04:56,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2021-12-18 00:04:56,960 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 5.72) internal successors, (143), 23 states have internal predecessors, (143), 8 states have call successors, (64), 8 states have call predecessors, (64), 9 states have return successors, (60), 7 states have call predecessors, (60), 8 states have call successors, (60) Word has length 243 [2021-12-18 00:04:56,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:04:56,966 INFO L225 Difference]: With dead ends: 1976 [2021-12-18 00:04:56,966 INFO L226 Difference]: Without dead ends: 1157 [2021-12-18 00:04:56,973 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 582 GetRequests, 528 SyntacticMatches, 4 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 374 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=368, Invalid=2284, Unknown=0, NotChecked=0, Total=2652 [2021-12-18 00:04:56,973 INFO L933 BasicCegarLoop]: 178 mSDtfsCounter, 337 mSDsluCounter, 1593 mSDsCounter, 0 mSdLazyCounter, 3987 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 398 SdHoareTripleChecker+Valid, 1771 SdHoareTripleChecker+Invalid, 4614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 3987 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 388 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-18 00:04:56,974 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [398 Valid, 1771 Invalid, 4614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 3987 Invalid, 0 Unknown, 388 Unchecked, 2.2s Time] [2021-12-18 00:04:56,975 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2021-12-18 00:04:57,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1060. [2021-12-18 00:04:57,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1060 states, 759 states have (on average 1.13965744400527) internal successors, (865), 784 states have internal predecessors, (865), 218 states have call successors, (218), 59 states have call predecessors, (218), 82 states have return successors, (391), 218 states have call predecessors, (391), 217 states have call successors, (391) [2021-12-18 00:04:57,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1060 states to 1060 states and 1474 transitions. [2021-12-18 00:04:57,030 INFO L78 Accepts]: Start accepts. Automaton has 1060 states and 1474 transitions. Word has length 243 [2021-12-18 00:04:57,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:04:57,031 INFO L470 AbstractCegarLoop]: Abstraction has 1060 states and 1474 transitions. [2021-12-18 00:04:57,031 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 5.72) internal successors, (143), 23 states have internal predecessors, (143), 8 states have call successors, (64), 8 states have call predecessors, (64), 9 states have return successors, (60), 7 states have call predecessors, (60), 8 states have call successors, (60) [2021-12-18 00:04:57,031 INFO L276 IsEmpty]: Start isEmpty. Operand 1060 states and 1474 transitions. [2021-12-18 00:04:57,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-12-18 00:04:57,036 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:04:57,036 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:04:57,064 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-12-18 00:04:57,259 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2021-12-18 00:04:57,259 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:04:57,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:04:57,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1351352324, now seen corresponding path program 1 times [2021-12-18 00:04:57,260 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:04:57,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163672015] [2021-12-18 00:04:57,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:04:57,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:04:57,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:57,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:04:57,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:57,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:04:57,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:57,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:04:57,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:57,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 00:04:57,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:57,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:04:57,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:57,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 00:04:57,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:57,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 00:04:57,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:57,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:04:57,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:57,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:04:57,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:57,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:04:57,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:57,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:04:57,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:57,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:04:57,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:57,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:04:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:57,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 00:04:57,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:57,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-18 00:04:57,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:57,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:04:57,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:57,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:04:57,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:57,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:04:57,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:57,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-18 00:04:57,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:57,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 00:04:57,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:57,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-18 00:04:57,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:57,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-18 00:04:57,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:57,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-18 00:04:57,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:57,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-18 00:04:57,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:57,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-18 00:04:57,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:57,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-18 00:04:57,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:57,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-18 00:04:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:57,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-18 00:04:57,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:57,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-18 00:04:57,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:57,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-12-18 00:04:57,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:57,601 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2021-12-18 00:04:57,601 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:04:57,602 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163672015] [2021-12-18 00:04:57,602 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163672015] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:04:57,602 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 00:04:57,602 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-18 00:04:57,602 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769638671] [2021-12-18 00:04:57,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:04:57,603 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-18 00:04:57,603 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:04:57,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-18 00:04:57,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-12-18 00:04:57,604 INFO L87 Difference]: Start difference. First operand 1060 states and 1474 transitions. Second operand has 13 states, 12 states have (on average 5.666666666666667) internal successors, (68), 8 states have internal predecessors, (68), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2021-12-18 00:04:58,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:04:58,400 INFO L93 Difference]: Finished difference Result 1128 states and 1550 transitions. [2021-12-18 00:04:58,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-18 00:04:58,401 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.666666666666667) internal successors, (68), 8 states have internal predecessors, (68), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) Word has length 236 [2021-12-18 00:04:58,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:04:58,406 INFO L225 Difference]: With dead ends: 1128 [2021-12-18 00:04:58,406 INFO L226 Difference]: Without dead ends: 1126 [2021-12-18 00:04:58,406 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 60 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=96, Invalid=366, Unknown=0, NotChecked=0, Total=462 [2021-12-18 00:04:58,407 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 211 mSDsluCounter, 1084 mSDsCounter, 0 mSdLazyCounter, 1075 mSolverCounterSat, 161 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 1278 SdHoareTripleChecker+Invalid, 1236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 161 IncrementalHoareTripleChecker+Valid, 1075 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-18 00:04:58,408 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 1278 Invalid, 1236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [161 Valid, 1075 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-18 00:04:58,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1126 states. [2021-12-18 00:04:58,458 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1126 to 1077. [2021-12-18 00:04:58,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1077 states, 773 states have (on average 1.1371280724450195) internal successors, (879), 801 states have internal predecessors, (879), 218 states have call successors, (218), 59 states have call predecessors, (218), 85 states have return successors, (396), 218 states have call predecessors, (396), 217 states have call successors, (396) [2021-12-18 00:04:58,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1077 states to 1077 states and 1493 transitions. [2021-12-18 00:04:58,464 INFO L78 Accepts]: Start accepts. Automaton has 1077 states and 1493 transitions. Word has length 236 [2021-12-18 00:04:58,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:04:58,464 INFO L470 AbstractCegarLoop]: Abstraction has 1077 states and 1493 transitions. [2021-12-18 00:04:58,464 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.666666666666667) internal successors, (68), 8 states have internal predecessors, (68), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2021-12-18 00:04:58,464 INFO L276 IsEmpty]: Start isEmpty. Operand 1077 states and 1493 transitions. [2021-12-18 00:04:58,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 237 [2021-12-18 00:04:58,469 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:04:58,470 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:04:58,470 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2021-12-18 00:04:58,470 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:04:58,470 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:04:58,470 INFO L85 PathProgramCache]: Analyzing trace with hash 2052416902, now seen corresponding path program 2 times [2021-12-18 00:04:58,471 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:04:58,471 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130052791] [2021-12-18 00:04:58,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:04:58,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:04:58,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:58,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:04:58,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:58,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:04:58,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:58,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:04:58,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:58,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 00:04:58,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:58,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:04:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:58,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 00:04:58,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:58,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 00:04:58,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:58,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:04:58,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:58,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:04:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:58,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:04:58,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:58,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:04:58,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:58,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:04:58,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:58,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:04:58,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:58,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 00:04:58,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:58,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-18 00:04:58,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:58,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:04:58,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:58,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:04:58,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:58,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:04:58,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:58,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-18 00:04:58,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:58,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 00:04:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:58,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-18 00:04:58,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:58,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-18 00:04:58,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:58,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-18 00:04:59,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:59,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-18 00:04:59,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:59,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-18 00:04:59,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:59,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2021-12-18 00:04:59,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:59,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2021-12-18 00:04:59,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:59,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2021-12-18 00:04:59,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:59,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2021-12-18 00:04:59,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:59,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2021-12-18 00:04:59,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:04:59,179 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 74 proven. 28 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2021-12-18 00:04:59,180 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:04:59,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130052791] [2021-12-18 00:04:59,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130052791] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:04:59,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259937659] [2021-12-18 00:04:59,180 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 00:04:59,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:04:59,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:04:59,181 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:04:59,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-12-18 00:05:00,125 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 00:05:00,125 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 00:05:00,138 INFO L263 TraceCheckSpWp]: Trace formula consists of 3168 conjuncts, 64 conjunts are in the unsatisfiable core [2021-12-18 00:05:00,142 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:05:00,576 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:05:00,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:05:00,577 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:05:00,578 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:05:00,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:05:00,579 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:05:00,588 INFO L354 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2021-12-18 00:05:00,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 48 [2021-12-18 00:05:01,165 INFO L134 CoverageAnalysis]: Checked inductivity of 422 backedges. 296 proven. 16 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-12-18 00:05:01,165 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:05:01,477 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259937659] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:05:01,478 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 00:05:01,478 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 27 [2021-12-18 00:05:01,478 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [379096278] [2021-12-18 00:05:01,478 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 00:05:01,478 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-18 00:05:01,478 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:05:01,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-18 00:05:01,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=781, Unknown=0, NotChecked=0, Total=870 [2021-12-18 00:05:01,479 INFO L87 Difference]: Start difference. First operand 1077 states and 1493 transitions. Second operand has 27 states, 24 states have (on average 6.708333333333333) internal successors, (161), 22 states have internal predecessors, (161), 10 states have call successors, (53), 8 states have call predecessors, (53), 7 states have return successors, (49), 7 states have call predecessors, (49), 9 states have call successors, (49) [2021-12-18 00:05:04,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:05:04,370 INFO L93 Difference]: Finished difference Result 1893 states and 2553 transitions. [2021-12-18 00:05:04,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-12-18 00:05:04,371 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 24 states have (on average 6.708333333333333) internal successors, (161), 22 states have internal predecessors, (161), 10 states have call successors, (53), 8 states have call predecessors, (53), 7 states have return successors, (49), 7 states have call predecessors, (49), 9 states have call successors, (49) Word has length 236 [2021-12-18 00:05:04,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:05:04,378 INFO L225 Difference]: With dead ends: 1893 [2021-12-18 00:05:04,378 INFO L226 Difference]: Without dead ends: 1143 [2021-12-18 00:05:04,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 443 GetRequests, 373 SyntacticMatches, 14 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 909 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=437, Invalid=2869, Unknown=0, NotChecked=0, Total=3306 [2021-12-18 00:05:04,382 INFO L933 BasicCegarLoop]: 218 mSDtfsCounter, 560 mSDsluCounter, 1201 mSDsCounter, 0 mSdLazyCounter, 2786 mSolverCounterSat, 555 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 616 SdHoareTripleChecker+Valid, 1419 SdHoareTripleChecker+Invalid, 4205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 555 IncrementalHoareTripleChecker+Valid, 2786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 864 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-18 00:05:04,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [616 Valid, 1419 Invalid, 4205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [555 Valid, 2786 Invalid, 0 Unknown, 864 Unchecked, 1.9s Time] [2021-12-18 00:05:04,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1143 states. [2021-12-18 00:05:04,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1143 to 1021. [2021-12-18 00:05:04,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1021 states, 733 states have (on average 1.1241473396998636) internal successors, (824), 761 states have internal predecessors, (824), 206 states have call successors, (206), 56 states have call predecessors, (206), 81 states have return successors, (385), 205 states have call predecessors, (385), 205 states have call successors, (385) [2021-12-18 00:05:04,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1021 states to 1021 states and 1415 transitions. [2021-12-18 00:05:04,439 INFO L78 Accepts]: Start accepts. Automaton has 1021 states and 1415 transitions. Word has length 236 [2021-12-18 00:05:04,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:05:04,439 INFO L470 AbstractCegarLoop]: Abstraction has 1021 states and 1415 transitions. [2021-12-18 00:05:04,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 24 states have (on average 6.708333333333333) internal successors, (161), 22 states have internal predecessors, (161), 10 states have call successors, (53), 8 states have call predecessors, (53), 7 states have return successors, (49), 7 states have call predecessors, (49), 9 states have call successors, (49) [2021-12-18 00:05:04,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1021 states and 1415 transitions. [2021-12-18 00:05:04,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-12-18 00:05:04,444 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:05:04,445 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:05:04,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-12-18 00:05:04,659 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:05:04,659 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:05:04,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:05:04,660 INFO L85 PathProgramCache]: Analyzing trace with hash -1752944378, now seen corresponding path program 1 times [2021-12-18 00:05:04,660 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:05:04,660 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490632713] [2021-12-18 00:05:04,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:05:04,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:05:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:05,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:05:05,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:05,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:05:05,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:05,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:05:05,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:05,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 00:05:05,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:05,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:05:05,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:05,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 00:05:05,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:05,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 00:05:05,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:05,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:05:05,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:05,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:05:05,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:05,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:05:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:05,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:05:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:05,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:05:05,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:05,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:05:05,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:05,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 00:05:05,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:05,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-18 00:05:05,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:05,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:05:05,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:05,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:05:05,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:05,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:05:05,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:05,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-18 00:05:05,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:05,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 00:05:05,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:05,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-18 00:05:05,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:05,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-18 00:05:05,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:06,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:05:06,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:06,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:05:06,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:06,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-18 00:05:06,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:06,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-18 00:05:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:06,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-18 00:05:06,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:06,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-18 00:05:06,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:06,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-12-18 00:05:06,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:06,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-12-18 00:05:06,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:06,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-12-18 00:05:06,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:06,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2021-12-18 00:05:06,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:06,284 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 21 proven. 41 refuted. 0 times theorem prover too weak. 406 trivial. 0 not checked. [2021-12-18 00:05:06,284 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:05:06,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490632713] [2021-12-18 00:05:06,284 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490632713] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:05:06,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863137490] [2021-12-18 00:05:06,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:05:06,285 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:05:06,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:05:06,288 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:05:06,289 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-12-18 00:05:06,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:06,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 3224 conjuncts, 210 conjunts are in the unsatisfiable core [2021-12-18 00:05:06,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:05:07,225 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 00:05:07,228 INFO L388 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 [2021-12-18 00:05:19,424 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 00:05:19,425 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 00:05:22,246 INFO L388 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 [2021-12-18 00:05:22,255 WARN L860 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimArr_2 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_ensure_byte_buf_has_allocated_buffer_member_#in~buf.base| v_arrayElimArr_2)) (not (= 0 (select v_arrayElimArr_2 (+ |c_ensure_byte_buf_has_allocated_buffer_member_#in~buf.offset| 8)))))) (exists ((v_ArrVal_5095 Int) (v_ArrVal_5098 Int)) (= |c_#memory_int| (store |c_old(#memory_int)| |c_ensure_byte_buf_has_allocated_buffer_member_#in~buf.base| (store (store (select |c_old(#memory_int)| |c_ensure_byte_buf_has_allocated_buffer_member_#in~buf.base|) (+ |c_ensure_byte_buf_has_allocated_buffer_member_#in~buf.offset| 24) v_ArrVal_5095) (+ |c_ensure_byte_buf_has_allocated_buffer_member_#in~buf.offset| 8) v_ArrVal_5098))))) is different from true [2021-12-18 00:05:22,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:05:22,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:05:22,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:05:22,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:05:22,276 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:05:22,277 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:05:22,279 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 00:05:22,279 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 40 treesize of output 46 [2021-12-18 00:05:22,295 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 00:05:22,295 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2021-12-18 00:05:22,301 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-18 00:05:26,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 00:05:26,825 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 00:05:26,847 WARN L860 $PredicateComparison]: unable to prove that (exists ((save_byte_from_array_~storage.base Int) (v_ArrVal_5105 (Array Int Int)) (v_ArrVal_5104 Int) (v_ArrVal_5102 Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| save_byte_from_array_~storage.base v_ArrVal_5105)) (= |c_#memory_int| (store |c_old(#memory_int)| save_byte_from_array_~storage.base (store (store (select |c_old(#memory_int)| save_byte_from_array_~storage.base) |c_save_byte_from_array_#in~storage.offset| v_ArrVal_5102) (+ |c_save_byte_from_array_#in~storage.offset| 8) v_ArrVal_5104))))) is different from true [2021-12-18 00:05:26,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:05:26,880 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:05:26,881 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:05:26,882 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:05:26,883 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 00:05:26,916 INFO L354 Elim1Store]: treesize reduction 36, result has 42.9 percent of original size [2021-12-18 00:05:26,916 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 58 treesize of output 82 [2021-12-18 00:05:26,953 INFO L354 Elim1Store]: treesize reduction 20, result has 48.7 percent of original size [2021-12-18 00:05:26,953 INFO L388 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 27 treesize of output 40 [2021-12-18 00:05:27,012 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-12-18 00:05:27,071 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-12-18 00:05:27,356 INFO L354 Elim1Store]: treesize reduction 54, result has 26.0 percent of original size [2021-12-18 00:05:27,356 INFO L388 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 79 treesize of output 90 [2021-12-18 00:05:27,362 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:05:27,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:05:27,364 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:05:27,365 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 30 [2021-12-18 00:05:27,392 INFO L354 Elim1Store]: treesize reduction 44, result has 30.2 percent of original size [2021-12-18 00:05:27,393 INFO L388 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 90 treesize of output 95 [2021-12-18 00:05:27,398 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:05:27,400 INFO L388 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 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 21 [2021-12-18 00:05:27,465 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 9 [2021-12-18 00:05:27,492 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2021-12-18 00:05:27,581 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 82 [2021-12-18 00:05:27,652 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 16 [2021-12-18 00:05:27,681 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 31 [2021-12-18 00:05:27,768 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-18 00:05:30,298 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_24| Int) (|ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base| Int)) (and (not (= |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_24| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|)) (let ((.cse3 (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_24|)) (.cse5 (select (select |c_#memory_int| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|) 16))) (let ((.cse4 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_24|) 8)) (.cse2 (select (select |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|) 8)) (.cse1 (not (= 0 (mod .cse5 18446744073709551616)))) (.cse0 (select .cse3 16))) (or (and (not (= 0 (mod .cse0 18446744073709551616))) (or (and .cse1 (not (= 0 .cse2))) (and (exists ((|v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_BEFORE_CALL_35| Int)) (and (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_BEFORE_CALL_35|) 8) (select (select |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|) 8)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_BEFORE_CALL_35|) 16) (select (select |c_#memory_int| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|) 16)))) .cse1 (= (mod (* (select .cse3 0) 18446744073709551615) (- 18446744073709551616)) 0) (not (= 0 .cse4))))) (and (= .cse4 .cse2) .cse1 (= .cse0 .cse5))))))) is different from true [2021-12-18 00:06:33,674 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_26| Int) (|ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base| Int)) (and (not (= |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_26| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|)) (let ((.cse1 (select (select |c_#memory_int| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|) 16)) (.cse9 (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_26|))) (let ((.cse0 (select .cse9 16)) (.cse4 (select (select |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|) 8)) (.cse2 (not (= 0 (mod .cse1 18446744073709551616)))) (.cse3 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_26|) 8))) (or (and (= .cse0 .cse1) .cse2 (= .cse3 .cse4)) (and (not (= 0 (mod .cse0 18446744073709551616))) (or (and (exists ((|v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_BEFORE_CALL_37| Int)) (and (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_BEFORE_CALL_37|) 8) (select (select |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|) 8)) (let ((.cse5 (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_BEFORE_CALL_37|) 16))) (or (and (not (= 0 (mod .cse5 18446744073709551616))) (= |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_BEFORE_CALL_37|)) (let ((.cse7 (select |c_#memory_int| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|))) (let ((.cse8 (select .cse7 16))) (and (let ((.cse6 (select .cse7 0))) (< (div (+ (* .cse6 (- 1)) 18446744073709551615) (- 18446744073709551616)) (+ (div (+ .cse6 (- 1)) 18446744073709551616) 1))) (not (= 0 (mod .cse8 18446744073709551616))) (= .cse5 .cse8)))))))) (not (= 0 .cse4))) (and .cse2 (not (= 0 .cse3)) (exists ((|v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_BEFORE_CALL_37| Int)) (and (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_BEFORE_CALL_37|) 16) (select (select |c_#memory_int| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|) 16)) (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_BEFORE_CALL_37|) 8) (select (select |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|) 8)))) (= (mod (* (select .cse9 0) 18446744073709551615) (- 18446744073709551616)) 0))))))))) is different from true [2021-12-18 00:06:48,889 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_27| Int) (|ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base| Int)) (and (let ((.cse5 (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_27|)) (.cse1 (select (select |c_#memory_int| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|) 16))) (let ((.cse4 (select (select |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|) 8)) (.cse3 (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_27|) 8)) (.cse2 (not (= 0 (mod .cse1 18446744073709551616)))) (.cse0 (select .cse5 16))) (or (and (= .cse0 .cse1) .cse2 (= .cse3 .cse4)) (and (or (and .cse2 (not (= 0 .cse4))) (and (not (= 0 .cse3)) (exists ((|v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_BEFORE_CALL_38| Int)) (and (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_BEFORE_CALL_38|) 8) (select (select |c_#memory_$Pointer$.base| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|) 8)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_BEFORE_CALL_38|) 16) (select (select |c_#memory_int| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|) 16)))) .cse2 (= (mod (* (select .cse5 0) 18446744073709551615) (- 18446744073709551616)) 0))) (not (= 0 (mod .cse0 18446744073709551616))))))) (not (= |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base_BEFORE_CALL_27| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|)))) is different from true [2021-12-18 00:08:14,681 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 00:08:14,688 INFO L354 Elim1Store]: treesize reduction 152, result has 0.7 percent of original size [2021-12-18 00:08:14,688 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 8 select indices, 8 select index equivalence classes, 2 disjoint index pairs (out of 28 index pairs), introduced 7 new quantified variables, introduced 24 case distinctions, treesize of input 305 treesize of output 243 [2021-12-18 00:08:14,701 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:08:14,702 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 00:08:14,710 INFO L354 Elim1Store]: treesize reduction 176, result has 0.6 percent of original size [2021-12-18 00:08:14,710 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 11 select indices, 11 select index equivalence classes, 3 disjoint index pairs (out of 55 index pairs), introduced 10 new quantified variables, introduced 42 case distinctions, treesize of input 254 treesize of output 156 [2021-12-18 00:08:14,758 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 228 proven. 60 refuted. 0 times theorem prover too weak. 71 trivial. 109 not checked. [2021-12-18 00:08:14,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:08:21,814 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 00:08:21,815 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 38 [2021-12-18 00:08:21,827 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 00:08:21,827 INFO L388 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 2 case distinctions, treesize of input 27 treesize of output 34 [2021-12-18 00:08:21,853 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_4 (Array Int Int)) (v_arrayElimArr_3 (Array Int Int)) (|v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_23| Int)) (or (not (= 0 (mod (select (select (store |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_23| v_arrayElimArr_4) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#buf~3#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#buf~3#1.offset| 16)) 18446744073709551616))) (not (= (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_23| v_arrayElimArr_3) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#buf~3#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#buf~3#1.offset| 8)) 0)) (not (= (select v_arrayElimArr_3 8) (select (select |c_#memory_$Pointer$.base| |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)))) (not (= (select v_arrayElimArr_4 16) (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| 16)))))) is different from false [2021-12-18 00:08:21,961 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_4 (Array Int Int)) (v_ArrVal_5127 (Array Int Int)) (v_save_byte_from_array_~storage.base_65 Int) (v_arrayElimArr_3 (Array Int Int)) (v_ArrVal_5126 Int) (v_ArrVal_5125 Int) (|v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_23| Int)) (let ((.cse0 (store |c_#memory_$Pointer$.base| v_save_byte_from_array_~storage.base_65 v_ArrVal_5127)) (.cse1 (store |c_#memory_int| v_save_byte_from_array_~storage.base_65 (store (store (select |c_#memory_int| v_save_byte_from_array_~storage.base_65) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#old_byte_from_src~0#1.offset| v_ArrVal_5125) (+ |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#old_byte_from_src~0#1.offset| 8) v_ArrVal_5126)))) (or (not (= (select (select (store .cse0 |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_23| v_arrayElimArr_3) |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| 8)) 0)) (not (= (select v_arrayElimArr_4 16) (select (select .cse1 |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| 16)))) (not (= (select v_arrayElimArr_3 8) (select (select .cse0 |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)))) (not (= 0 (mod (select (select (store .cse1 |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_23| v_arrayElimArr_4) |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| 16)) 18446744073709551616)))))) is different from false [2021-12-18 00:08:21,963 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863137490] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:08:21,964 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 00:08:21,964 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 51] total 80 [2021-12-18 00:08:21,964 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162122464] [2021-12-18 00:08:21,964 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 00:08:21,965 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2021-12-18 00:08:21,965 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:08:21,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2021-12-18 00:08:21,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=395, Invalid=6561, Unknown=44, NotChecked=1190, Total=8190 [2021-12-18 00:08:21,966 INFO L87 Difference]: Start difference. First operand 1021 states and 1415 transitions. Second operand has 80 states, 68 states have (on average 3.235294117647059) internal successors, (220), 66 states have internal predecessors, (220), 33 states have call successors, (65), 14 states have call predecessors, (65), 23 states have return successors, (62), 28 states have call predecessors, (62), 32 states have call successors, (62) [2021-12-18 00:10:03,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:10:03,834 INFO L93 Difference]: Finished difference Result 1761 states and 2449 transitions. [2021-12-18 00:10:03,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-12-18 00:10:03,835 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 68 states have (on average 3.235294117647059) internal successors, (220), 66 states have internal predecessors, (220), 33 states have call successors, (65), 14 states have call predecessors, (65), 23 states have return successors, (62), 28 states have call predecessors, (62), 32 states have call successors, (62) Word has length 245 [2021-12-18 00:10:03,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:10:03,842 INFO L225 Difference]: With dead ends: 1761 [2021-12-18 00:10:03,842 INFO L226 Difference]: Without dead ends: 1046 [2021-12-18 00:10:03,853 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 469 GetRequests, 328 SyntacticMatches, 14 SemanticMatches, 127 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 5412 ImplicationChecksByTransitivity, 266.5s TimeCoverageRelationStatistics Valid=868, Invalid=13812, Unknown=110, NotChecked=1722, Total=16512 [2021-12-18 00:10:03,854 INFO L933 BasicCegarLoop]: 243 mSDtfsCounter, 338 mSDsluCounter, 2457 mSDsCounter, 0 mSdLazyCounter, 4886 mSolverCounterSat, 360 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 371 SdHoareTripleChecker+Valid, 2700 SdHoareTripleChecker+Invalid, 11313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 360 IncrementalHoareTripleChecker+Valid, 4886 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 6067 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-12-18 00:10:03,856 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [371 Valid, 2700 Invalid, 11313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [360 Valid, 4886 Invalid, 0 Unknown, 6067 Unchecked, 3.8s Time] [2021-12-18 00:10:03,857 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1046 states. [2021-12-18 00:10:03,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1046 to 955. [2021-12-18 00:10:03,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 955 states, 679 states have (on average 1.1192930780559647) internal successors, (760), 701 states have internal predecessors, (760), 200 states have call successors, (200), 55 states have call predecessors, (200), 75 states have return successors, (375), 200 states have call predecessors, (375), 199 states have call successors, (375) [2021-12-18 00:10:03,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 955 states to 955 states and 1335 transitions. [2021-12-18 00:10:03,954 INFO L78 Accepts]: Start accepts. Automaton has 955 states and 1335 transitions. Word has length 245 [2021-12-18 00:10:03,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:10:03,954 INFO L470 AbstractCegarLoop]: Abstraction has 955 states and 1335 transitions. [2021-12-18 00:10:03,955 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 68 states have (on average 3.235294117647059) internal successors, (220), 66 states have internal predecessors, (220), 33 states have call successors, (65), 14 states have call predecessors, (65), 23 states have return successors, (62), 28 states have call predecessors, (62), 32 states have call successors, (62) [2021-12-18 00:10:03,955 INFO L276 IsEmpty]: Start isEmpty. Operand 955 states and 1335 transitions. [2021-12-18 00:10:03,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 248 [2021-12-18 00:10:03,959 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:10:03,960 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:10:03,998 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2021-12-18 00:10:04,171 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:10:04,172 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:10:04,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:10:04,173 INFO L85 PathProgramCache]: Analyzing trace with hash -2039312155, now seen corresponding path program 1 times [2021-12-18 00:10:04,173 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:10:04,173 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422104036] [2021-12-18 00:10:04,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:10:04,174 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:10:04,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:04,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:10:04,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:04,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:10:04,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:04,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:10:04,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:04,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 00:10:04,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:04,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:10:04,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:04,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 00:10:04,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:04,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 00:10:04,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:04,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:10:04,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:04,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:10:04,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:04,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:10:04,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:04,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:10:04,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:04,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:10:04,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:04,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:10:04,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:04,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 00:10:04,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:04,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-18 00:10:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:04,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:10:04,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:04,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:10:04,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:04,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:10:04,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:04,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-18 00:10:04,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:04,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 00:10:04,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:04,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-18 00:10:04,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:04,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-18 00:10:04,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:04,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:10:04,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:04,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:10:04,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:04,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-18 00:10:04,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:04,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2021-12-18 00:10:04,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:04,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2021-12-18 00:10:04,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:04,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2021-12-18 00:10:04,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:04,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 00:10:04,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:04,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 213 [2021-12-18 00:10:04,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:04,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 219 [2021-12-18 00:10:04,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:05,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 227 [2021-12-18 00:10:05,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:05,012 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 426 trivial. 0 not checked. [2021-12-18 00:10:05,013 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:10:05,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422104036] [2021-12-18 00:10:05,013 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422104036] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:10:05,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [805310998] [2021-12-18 00:10:05,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:10:05,014 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:10:05,014 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:10:05,016 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:10:05,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-12-18 00:10:05,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:05,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 3209 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-18 00:10:05,674 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:10:05,985 INFO L134 CoverageAnalysis]: Checked inductivity of 480 backedges. 250 proven. 0 refuted. 0 times theorem prover too weak. 230 trivial. 0 not checked. [2021-12-18 00:10:05,986 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:10:05,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [805310998] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:10:05,986 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:10:05,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 13 [2021-12-18 00:10:05,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996146956] [2021-12-18 00:10:05,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:10:05,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 00:10:05,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:10:05,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 00:10:05,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-18 00:10:05,987 INFO L87 Difference]: Start difference. First operand 955 states and 1335 transitions. Second operand has 9 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-12-18 00:10:06,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:10:06,175 INFO L93 Difference]: Finished difference Result 1711 states and 2416 transitions. [2021-12-18 00:10:06,176 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 00:10:06,176 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 247 [2021-12-18 00:10:06,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:10:06,181 INFO L225 Difference]: With dead ends: 1711 [2021-12-18 00:10:06,182 INFO L226 Difference]: Without dead ends: 948 [2021-12-18 00:10:06,186 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 322 GetRequests, 306 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-12-18 00:10:06,186 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 12 mSDsluCounter, 1557 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1788 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 00:10:06,186 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1788 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 00:10:06,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 948 states. [2021-12-18 00:10:06,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 948 to 926. [2021-12-18 00:10:06,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 926 states, 654 states have (on average 1.1162079510703364) internal successors, (730), 677 states have internal predecessors, (730), 198 states have call successors, (198), 52 states have call predecessors, (198), 73 states have return successors, (363), 198 states have call predecessors, (363), 197 states have call successors, (363) [2021-12-18 00:10:06,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 926 states to 926 states and 1291 transitions. [2021-12-18 00:10:06,249 INFO L78 Accepts]: Start accepts. Automaton has 926 states and 1291 transitions. Word has length 247 [2021-12-18 00:10:06,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:10:06,250 INFO L470 AbstractCegarLoop]: Abstraction has 926 states and 1291 transitions. [2021-12-18 00:10:06,250 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-12-18 00:10:06,250 INFO L276 IsEmpty]: Start isEmpty. Operand 926 states and 1291 transitions. [2021-12-18 00:10:06,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2021-12-18 00:10:06,255 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:10:06,256 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 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, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:10:06,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2021-12-18 00:10:06,471 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-18 00:10:06,471 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:10:06,472 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:10:06,472 INFO L85 PathProgramCache]: Analyzing trace with hash -1043052080, now seen corresponding path program 2 times [2021-12-18 00:10:06,472 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:10:06,472 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698304632] [2021-12-18 00:10:06,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:10:06,472 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:10:06,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:06,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:10:06,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:06,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:10:06,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:06,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:10:06,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:06,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 00:10:06,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:06,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:10:06,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:06,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 00:10:06,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:06,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 00:10:06,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:06,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:10:06,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:06,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:10:06,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:06,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:10:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:06,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:10:06,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:06,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:10:06,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:06,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:10:06,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:06,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 00:10:06,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:06,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-18 00:10:06,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:06,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:10:06,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:06,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:10:06,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:06,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:10:06,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:06,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-18 00:10:06,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:06,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 00:10:06,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:06,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-18 00:10:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:06,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-18 00:10:06,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:06,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:10:06,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:06,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:10:06,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:07,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-18 00:10:07,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:07,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-18 00:10:07,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:07,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-18 00:10:07,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:07,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-18 00:10:07,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:07,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-12-18 00:10:07,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:07,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2021-12-18 00:10:07,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:07,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2021-12-18 00:10:07,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:07,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-12-18 00:10:07,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:07,124 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 46 proven. 8 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2021-12-18 00:10:07,124 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:10:07,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698304632] [2021-12-18 00:10:07,124 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698304632] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:10:07,124 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191205783] [2021-12-18 00:10:07,124 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 00:10:07,124 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:10:07,125 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:10:07,128 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:10:07,129 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-12-18 00:10:08,483 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 00:10:08,483 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 00:10:08,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 3221 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-18 00:10:08,506 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:10:08,815 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 157 proven. 0 refuted. 0 times theorem prover too weak. 327 trivial. 0 not checked. [2021-12-18 00:10:08,815 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:10:08,815 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191205783] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:10:08,815 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:10:08,815 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 13 [2021-12-18 00:10:08,815 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [948038102] [2021-12-18 00:10:08,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:10:08,816 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 00:10:08,816 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:10:08,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 00:10:08,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2021-12-18 00:10:08,816 INFO L87 Difference]: Start difference. First operand 926 states and 1291 transitions. Second operand has 9 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-12-18 00:10:08,982 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:10:08,982 INFO L93 Difference]: Finished difference Result 1392 states and 1938 transitions. [2021-12-18 00:10:08,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 00:10:08,983 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) Word has length 249 [2021-12-18 00:10:08,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:10:08,989 INFO L225 Difference]: With dead ends: 1392 [2021-12-18 00:10:08,989 INFO L226 Difference]: Without dead ends: 900 [2021-12-18 00:10:08,992 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 324 GetRequests, 308 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2021-12-18 00:10:08,993 INFO L933 BasicCegarLoop]: 232 mSDtfsCounter, 12 mSDsluCounter, 1562 mSDsCounter, 0 mSdLazyCounter, 183 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1794 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 183 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 00:10:08,993 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1794 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 183 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 00:10:08,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 900 states. [2021-12-18 00:10:09,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 900 to 881. [2021-12-18 00:10:09,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 881 states, 624 states have (on average 1.1121794871794872) internal successors, (694), 646 states have internal predecessors, (694), 185 states have call successors, (185), 52 states have call predecessors, (185), 71 states have return successors, (329), 184 states have call predecessors, (329), 184 states have call successors, (329) [2021-12-18 00:10:09,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 881 states to 881 states and 1208 transitions. [2021-12-18 00:10:09,048 INFO L78 Accepts]: Start accepts. Automaton has 881 states and 1208 transitions. Word has length 249 [2021-12-18 00:10:09,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:10:09,048 INFO L470 AbstractCegarLoop]: Abstraction has 881 states and 1208 transitions. [2021-12-18 00:10:09,049 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.375) internal successors, (91), 8 states have internal predecessors, (91), 3 states have call successors, (31), 2 states have call predecessors, (31), 4 states have return successors, (29), 3 states have call predecessors, (29), 3 states have call successors, (29) [2021-12-18 00:10:09,049 INFO L276 IsEmpty]: Start isEmpty. Operand 881 states and 1208 transitions. [2021-12-18 00:10:09,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2021-12-18 00:10:09,053 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:10:09,053 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:10:09,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-12-18 00:10:09,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-18 00:10:09,271 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:10:09,272 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:10:09,272 INFO L85 PathProgramCache]: Analyzing trace with hash -1146617354, now seen corresponding path program 2 times [2021-12-18 00:10:09,272 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:10:09,272 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036115343] [2021-12-18 00:10:09,272 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:10:09,272 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:10:09,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:10,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:10:10,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:10,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:10:10,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:10,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:10:10,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:10,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 00:10:10,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:10,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:10:10,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:10,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 00:10:10,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:10,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 00:10:10,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:10,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:10:10,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:10,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:10:10,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:10,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:10:10,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:10,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:10:10,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:10,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:10:10,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:10,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:10:10,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:10,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 00:10:10,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:10,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-18 00:10:10,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:10,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:10:10,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:10,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:10:10,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:10,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:10:10,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:10,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-18 00:10:10,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:10,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 00:10:10,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:10,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-18 00:10:10,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:10,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:10:10,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:10,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:10:10,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:10,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2021-12-18 00:10:10,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:10,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-18 00:10:10,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:10,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2021-12-18 00:10:10,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:10,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-18 00:10:10,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:10,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-18 00:10:10,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:10,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-12-18 00:10:10,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:10,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2021-12-18 00:10:10,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:10,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-12-18 00:10:10,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:10,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 225 [2021-12-18 00:10:10,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:10,580 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 7 proven. 69 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2021-12-18 00:10:10,580 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:10:10,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036115343] [2021-12-18 00:10:10,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036115343] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:10:10,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1996160698] [2021-12-18 00:10:10,581 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 00:10:10,581 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:10:10,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:10:10,582 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:10:10,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-12-18 00:10:11,964 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 00:10:11,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 00:10:11,980 INFO L263 TraceCheckSpWp]: Trace formula consists of 3219 conjuncts, 48 conjunts are in the unsatisfiable core [2021-12-18 00:10:11,984 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:10:13,685 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 251 proven. 24 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2021-12-18 00:10:13,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:10:14,273 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-12-18 00:10:14,273 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-12-18 00:10:14,280 INFO L354 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2021-12-18 00:10:14,280 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2021-12-18 00:10:14,496 INFO L134 CoverageAnalysis]: Checked inductivity of 468 backedges. 72 proven. 30 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2021-12-18 00:10:14,496 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1996160698] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 00:10:14,496 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 00:10:14,496 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 14, 13] total 36 [2021-12-18 00:10:14,496 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559434705] [2021-12-18 00:10:14,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 00:10:14,497 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2021-12-18 00:10:14,497 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:10:14,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2021-12-18 00:10:14,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1149, Unknown=0, NotChecked=0, Total=1260 [2021-12-18 00:10:14,498 INFO L87 Difference]: Start difference. First operand 881 states and 1208 transitions. Second operand has 36 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 31 states have internal predecessors, (174), 12 states have call successors, (68), 7 states have call predecessors, (68), 8 states have return successors, (64), 12 states have call predecessors, (64), 12 states have call successors, (64) [2021-12-18 00:10:19,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:10:19,731 INFO L93 Difference]: Finished difference Result 1609 states and 2235 transitions. [2021-12-18 00:10:19,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-12-18 00:10:19,735 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 31 states have internal predecessors, (174), 12 states have call successors, (68), 7 states have call predecessors, (68), 8 states have return successors, (64), 12 states have call predecessors, (64), 12 states have call successors, (64) Word has length 245 [2021-12-18 00:10:19,736 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:10:19,741 INFO L225 Difference]: With dead ends: 1609 [2021-12-18 00:10:19,741 INFO L226 Difference]: Without dead ends: 1041 [2021-12-18 00:10:19,744 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 609 GetRequests, 522 SyntacticMatches, 17 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1294 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=625, Invalid=4487, Unknown=0, NotChecked=0, Total=5112 [2021-12-18 00:10:19,745 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 292 mSDsluCounter, 1585 mSDsCounter, 0 mSdLazyCounter, 5356 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 363 SdHoareTripleChecker+Valid, 1805 SdHoareTripleChecker+Invalid, 6241 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 5356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 709 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2021-12-18 00:10:19,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [363 Valid, 1805 Invalid, 6241 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 5356 Invalid, 0 Unknown, 709 Unchecked, 3.8s Time] [2021-12-18 00:10:19,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1041 states. [2021-12-18 00:10:19,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1041 to 949. [2021-12-18 00:10:19,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 949 states, 681 states have (on average 1.1116005873715125) internal successors, (757), 703 states have internal predecessors, (757), 191 states have call successors, (191), 57 states have call predecessors, (191), 76 states have return successors, (332), 190 states have call predecessors, (332), 190 states have call successors, (332) [2021-12-18 00:10:19,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 949 states to 949 states and 1280 transitions. [2021-12-18 00:10:19,798 INFO L78 Accepts]: Start accepts. Automaton has 949 states and 1280 transitions. Word has length 245 [2021-12-18 00:10:19,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:10:19,798 INFO L470 AbstractCegarLoop]: Abstraction has 949 states and 1280 transitions. [2021-12-18 00:10:19,799 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 4.9714285714285715) internal successors, (174), 31 states have internal predecessors, (174), 12 states have call successors, (68), 7 states have call predecessors, (68), 8 states have return successors, (64), 12 states have call predecessors, (64), 12 states have call successors, (64) [2021-12-18 00:10:19,799 INFO L276 IsEmpty]: Start isEmpty. Operand 949 states and 1280 transitions. [2021-12-18 00:10:19,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-12-18 00:10:19,802 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:10:19,803 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:10:19,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-12-18 00:10:20,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2021-12-18 00:10:20,027 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:10:20,027 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:10:20,028 INFO L85 PathProgramCache]: Analyzing trace with hash -596999237, now seen corresponding path program 3 times [2021-12-18 00:10:20,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:10:20,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652206971] [2021-12-18 00:10:20,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:10:20,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:10:20,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:20,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:10:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:20,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:10:20,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:20,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:10:20,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:20,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 00:10:20,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:20,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:10:20,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:20,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 00:10:20,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:20,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 00:10:20,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:20,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:10:20,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:20,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:10:20,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:20,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:10:20,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:20,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:10:20,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:20,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:10:20,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:20,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:10:20,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:20,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 00:10:20,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:20,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-18 00:10:20,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:20,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:10:20,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:20,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:10:20,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:20,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:10:20,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:20,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-18 00:10:20,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:20,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 00:10:20,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:20,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-18 00:10:20,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:20,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-18 00:10:20,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:20,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:10:20,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:20,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:10:20,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:20,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-18 00:10:20,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:20,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-18 00:10:20,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:20,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-18 00:10:20,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:20,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-18 00:10:20,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:20,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-12-18 00:10:20,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:20,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-12-18 00:10:20,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:20,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-12-18 00:10:20,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:20,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-12-18 00:10:20,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:20,893 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 88 proven. 10 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2021-12-18 00:10:20,894 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:10:20,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1652206971] [2021-12-18 00:10:20,894 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1652206971] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:10:20,894 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1971084120] [2021-12-18 00:10:20,894 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-18 00:10:20,895 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:10:20,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:10:20,897 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:10:20,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-12-18 00:10:22,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-18 00:10:22,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 00:10:22,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 2749 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-18 00:10:22,145 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:10:29,313 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 188 proven. 13 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2021-12-18 00:10:29,313 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:10:29,639 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-12-18 00:10:29,639 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2021-12-18 00:10:29,882 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 110 proven. 14 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2021-12-18 00:10:29,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1971084120] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 00:10:29,883 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 00:10:29,883 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10, 9] total 27 [2021-12-18 00:10:29,883 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491632602] [2021-12-18 00:10:29,883 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 00:10:29,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2021-12-18 00:10:29,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:10:29,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2021-12-18 00:10:29,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=622, Unknown=1, NotChecked=0, Total=702 [2021-12-18 00:10:29,884 INFO L87 Difference]: Start difference. First operand 949 states and 1280 transitions. Second operand has 27 states, 26 states have (on average 5.346153846153846) internal successors, (139), 22 states have internal predecessors, (139), 7 states have call successors, (45), 7 states have call predecessors, (45), 6 states have return successors, (38), 5 states have call predecessors, (38), 5 states have call successors, (38) [2021-12-18 00:10:33,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:10:33,801 INFO L93 Difference]: Finished difference Result 1316 states and 1808 transitions. [2021-12-18 00:10:33,801 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-12-18 00:10:33,801 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 5.346153846153846) internal successors, (139), 22 states have internal predecessors, (139), 7 states have call successors, (45), 7 states have call predecessors, (45), 6 states have return successors, (38), 5 states have call predecessors, (38), 5 states have call successors, (38) Word has length 251 [2021-12-18 00:10:33,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:10:33,807 INFO L225 Difference]: With dead ends: 1316 [2021-12-18 00:10:33,808 INFO L226 Difference]: Without dead ends: 1082 [2021-12-18 00:10:33,810 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 624 GetRequests, 555 SyntacticMatches, 14 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 768 ImplicationChecksByTransitivity, 8.1s TimeCoverageRelationStatistics Valid=428, Invalid=2763, Unknown=1, NotChecked=0, Total=3192 [2021-12-18 00:10:33,811 INFO L933 BasicCegarLoop]: 246 mSDtfsCounter, 265 mSDsluCounter, 1447 mSDsCounter, 0 mSdLazyCounter, 3811 mSolverCounterSat, 190 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 290 SdHoareTripleChecker+Valid, 1693 SdHoareTripleChecker+Invalid, 4489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 190 IncrementalHoareTripleChecker+Valid, 3811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 488 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2021-12-18 00:10:33,811 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [290 Valid, 1693 Invalid, 4489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [190 Valid, 3811 Invalid, 0 Unknown, 488 Unchecked, 2.8s Time] [2021-12-18 00:10:33,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1082 states. [2021-12-18 00:10:33,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1082 to 999. [2021-12-18 00:10:33,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 999 states, 715 states have (on average 1.1062937062937064) internal successors, (791), 736 states have internal predecessors, (791), 204 states have call successors, (204), 63 states have call predecessors, (204), 79 states have return successors, (340), 201 states have call predecessors, (340), 203 states have call successors, (340) [2021-12-18 00:10:33,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1335 transitions. [2021-12-18 00:10:33,875 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1335 transitions. Word has length 251 [2021-12-18 00:10:33,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:10:33,876 INFO L470 AbstractCegarLoop]: Abstraction has 999 states and 1335 transitions. [2021-12-18 00:10:33,876 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 5.346153846153846) internal successors, (139), 22 states have internal predecessors, (139), 7 states have call successors, (45), 7 states have call predecessors, (45), 6 states have return successors, (38), 5 states have call predecessors, (38), 5 states have call successors, (38) [2021-12-18 00:10:33,876 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1335 transitions. [2021-12-18 00:10:33,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-12-18 00:10:33,880 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:10:33,881 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:10:33,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-12-18 00:10:34,103 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:10:34,103 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:10:34,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:10:34,104 INFO L85 PathProgramCache]: Analyzing trace with hash -331329537, now seen corresponding path program 1 times [2021-12-18 00:10:34,104 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:10:34,104 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227862721] [2021-12-18 00:10:34,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:10:34,104 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:10:34,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:34,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:10:34,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:34,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:10:34,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:34,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:10:34,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:34,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 00:10:34,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:34,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:10:34,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:34,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 00:10:34,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:34,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 00:10:34,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:34,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:10:34,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:34,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:10:34,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:34,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:10:34,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:34,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:10:34,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:34,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:10:34,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:34,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:10:34,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:34,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 00:10:34,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:34,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-18 00:10:34,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:34,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:10:34,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:34,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:10:34,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:34,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:10:34,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:34,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-18 00:10:34,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:34,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 00:10:34,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:34,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-18 00:10:34,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:34,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-18 00:10:34,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:35,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:10:35,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:35,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:10:35,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:35,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-18 00:10:35,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:35,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-18 00:10:35,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:35,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-18 00:10:35,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:35,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2021-12-18 00:10:35,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:35,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2021-12-18 00:10:35,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:35,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-12-18 00:10:35,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:35,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-12-18 00:10:35,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:35,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-12-18 00:10:35,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:35,251 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 33 proven. 20 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2021-12-18 00:10:35,251 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:10:35,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227862721] [2021-12-18 00:10:35,252 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1227862721] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:10:35,252 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [239307483] [2021-12-18 00:10:35,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:10:35,252 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:10:35,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:10:35,253 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:10:35,254 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-12-18 00:10:35,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:35,953 INFO L263 TraceCheckSpWp]: Trace formula consists of 3225 conjuncts, 100 conjunts are in the unsatisfiable core [2021-12-18 00:10:35,960 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:10:36,241 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 00:10:36,247 INFO L388 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 [2021-12-18 00:10:52,141 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 00:10:52,143 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 00:10:52,168 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6375 (Array Int Int)) (save_byte_from_array_~storage.base Int) (v_ArrVal_6377 Int) (v_ArrVal_6374 Int)) (and (= |c_#memory_int| (store |c_old(#memory_int)| save_byte_from_array_~storage.base (store (store (select |c_old(#memory_int)| save_byte_from_array_~storage.base) |c_save_byte_from_array_#in~storage.offset| v_ArrVal_6374) (+ |c_save_byte_from_array_#in~storage.offset| 8) v_ArrVal_6377))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| save_byte_from_array_~storage.base v_ArrVal_6375)))) is different from true [2021-12-18 00:10:52,189 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:10:52,190 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:10:52,190 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 30 [2021-12-18 00:10:52,202 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 00:10:52,203 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2021-12-18 00:10:52,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-12-18 00:10:52,261 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:10:52,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:10:52,262 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:10:52,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 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 [2021-12-18 00:10:52,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:10:52,268 INFO L388 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 22 treesize of output 23 [2021-12-18 00:10:52,271 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 16 [2021-12-18 00:10:52,275 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 00:11:05,291 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 323 proven. 36 refuted. 0 times theorem prover too weak. 129 trivial. 2 not checked. [2021-12-18 00:11:05,292 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:11:05,886 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 21 [2021-12-18 00:11:05,889 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2021-12-18 00:11:06,037 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_save_byte_from_array_~storage.base_80 Int) (v_ArrVal_6397 Int) (v_ArrVal_6395 (Array Int Int)) (v_ArrVal_6396 Int)) (or (not (= (select (select (store |c_#memory_$Pointer$.base| v_save_byte_from_array_~storage.base_80 v_ArrVal_6395) |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)) 0)) (not (= 0 (mod (select (select (store |c_#memory_int| v_save_byte_from_array_~storage.base_80 (store (store (select |c_#memory_int| v_save_byte_from_array_~storage.base_80) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#old_byte_from_src~0#1.offset| v_ArrVal_6397) (+ |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#old_byte_from_src~0#1.offset| 8) v_ArrVal_6396)) |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| 16)) 18446744073709551616))))) is different from false [2021-12-18 00:11:06,038 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [239307483] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:11:06,038 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 00:11:06,038 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 29] total 50 [2021-12-18 00:11:06,038 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358233709] [2021-12-18 00:11:06,038 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 00:11:06,039 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2021-12-18 00:11:06,039 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:11:06,039 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2021-12-18 00:11:06,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=2981, Unknown=13, NotChecked=222, Total=3422 [2021-12-18 00:11:06,040 INFO L87 Difference]: Start difference. First operand 999 states and 1335 transitions. Second operand has 50 states, 44 states have (on average 4.0) internal successors, (176), 40 states have internal predecessors, (176), 19 states have call successors, (60), 9 states have call predecessors, (60), 14 states have return successors, (58), 19 states have call predecessors, (58), 19 states have call successors, (58) [2021-12-18 00:11:51,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:11:51,194 INFO L93 Difference]: Finished difference Result 1494 states and 1963 transitions. [2021-12-18 00:11:51,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2021-12-18 00:11:51,195 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 44 states have (on average 4.0) internal successors, (176), 40 states have internal predecessors, (176), 19 states have call successors, (60), 9 states have call predecessors, (60), 14 states have return successors, (58), 19 states have call predecessors, (58), 19 states have call successors, (58) Word has length 251 [2021-12-18 00:11:51,195 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:11:51,199 INFO L225 Difference]: With dead ends: 1494 [2021-12-18 00:11:51,199 INFO L226 Difference]: Without dead ends: 1084 [2021-12-18 00:11:51,201 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 483 GetRequests, 379 SyntacticMatches, 6 SemanticMatches, 98 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2650 ImplicationChecksByTransitivity, 71.6s TimeCoverageRelationStatistics Valid=659, Invalid=8813, Unknown=42, NotChecked=386, Total=9900 [2021-12-18 00:11:51,201 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 376 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 4135 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 409 SdHoareTripleChecker+Valid, 1723 SdHoareTripleChecker+Invalid, 6344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 4135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1885 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-12-18 00:11:51,202 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [409 Valid, 1723 Invalid, 6344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 4135 Invalid, 0 Unknown, 1885 Unchecked, 2.7s Time] [2021-12-18 00:11:51,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1084 states. [2021-12-18 00:11:51,257 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1084 to 1044. [2021-12-18 00:11:51,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1044 states, 752 states have (on average 1.1050531914893618) internal successors, (831), 773 states have internal predecessors, (831), 209 states have call successors, (209), 66 states have call predecessors, (209), 82 states have return successors, (349), 206 states have call predecessors, (349), 208 states have call successors, (349) [2021-12-18 00:11:51,261 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 1389 transitions. [2021-12-18 00:11:51,261 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 1389 transitions. Word has length 251 [2021-12-18 00:11:51,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:11:51,262 INFO L470 AbstractCegarLoop]: Abstraction has 1044 states and 1389 transitions. [2021-12-18 00:11:51,262 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 44 states have (on average 4.0) internal successors, (176), 40 states have internal predecessors, (176), 19 states have call successors, (60), 9 states have call predecessors, (60), 14 states have return successors, (58), 19 states have call predecessors, (58), 19 states have call successors, (58) [2021-12-18 00:11:51,262 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 1389 transitions. [2021-12-18 00:11:51,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2021-12-18 00:11:51,266 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:11:51,266 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:11:51,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-12-18 00:11:51,479 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:11:51,479 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:11:51,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:11:51,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1767312521, now seen corresponding path program 3 times [2021-12-18 00:11:51,480 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:11:51,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [882211433] [2021-12-18 00:11:51,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:11:51,480 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:11:52,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:11:52,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:11:52,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:11:52,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:11:52,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:11:52,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:11:52,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:11:52,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 00:11:52,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:11:52,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:11:52,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:11:52,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 00:11:52,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:11:52,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 00:11:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:11:52,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:11:52,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:11:52,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:11:52,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:11:52,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:11:52,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:11:52,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:11:52,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:11:52,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:11:52,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:11:52,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:11:52,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:11:52,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 00:11:52,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:11:52,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-18 00:11:52,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:11:52,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:11:52,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:11:52,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:11:52,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:11:52,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:11:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:11:52,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-18 00:11:52,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:11:52,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 00:11:52,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:11:52,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-18 00:11:52,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:11:52,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-18 00:11:52,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:11:52,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:11:52,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:11:52,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:11:52,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:11:52,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-18 00:11:52,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:11:52,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-18 00:11:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:11:52,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-18 00:11:52,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:11:52,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 00:11:52,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:11:52,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-12-18 00:11:52,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:11:53,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2021-12-18 00:11:53,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:11:53,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-12-18 00:11:53,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:11:53,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2021-12-18 00:11:53,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:11:53,130 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 41 proven. 21 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2021-12-18 00:11:53,130 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:11:53,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [882211433] [2021-12-18 00:11:53,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [882211433] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:11:53,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [892998741] [2021-12-18 00:11:53,131 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-18 00:11:53,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:11:53,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:11:53,132 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:11:53,132 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-12-18 00:11:54,398 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-18 00:11:54,398 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 00:11:54,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 2740 conjuncts, 30 conjunts are in the unsatisfiable core [2021-12-18 00:11:54,413 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:11:55,542 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 179 proven. 4 refuted. 0 times theorem prover too weak. 307 trivial. 0 not checked. [2021-12-18 00:11:55,542 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:11:56,033 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-12-18 00:11:56,033 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2021-12-18 00:11:56,038 INFO L354 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2021-12-18 00:11:56,038 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 12 [2021-12-18 00:11:56,292 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 96 proven. 10 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2021-12-18 00:11:56,292 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [892998741] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 00:11:56,292 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 00:11:56,293 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 12, 11] total 48 [2021-12-18 00:11:56,293 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651967130] [2021-12-18 00:11:56,293 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 00:11:56,293 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-12-18 00:11:56,294 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:11:56,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-12-18 00:11:56,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=2091, Unknown=0, NotChecked=0, Total=2256 [2021-12-18 00:11:56,295 INFO L87 Difference]: Start difference. First operand 1044 states and 1389 transitions. Second operand has 48 states, 44 states have (on average 3.659090909090909) internal successors, (161), 41 states have internal predecessors, (161), 17 states have call successors, (66), 7 states have call predecessors, (66), 12 states have return successors, (63), 15 states have call predecessors, (63), 17 states have call successors, (63) [2021-12-18 00:12:01,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:12:01,241 INFO L93 Difference]: Finished difference Result 1403 states and 1854 transitions. [2021-12-18 00:12:01,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2021-12-18 00:12:01,242 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 44 states have (on average 3.659090909090909) internal successors, (161), 41 states have internal predecessors, (161), 17 states have call successors, (66), 7 states have call predecessors, (66), 12 states have return successors, (63), 15 states have call predecessors, (63), 17 states have call successors, (63) Word has length 251 [2021-12-18 00:12:01,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:12:01,244 INFO L225 Difference]: With dead ends: 1403 [2021-12-18 00:12:01,244 INFO L226 Difference]: Without dead ends: 781 [2021-12-18 00:12:01,246 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 619 GetRequests, 542 SyntacticMatches, 6 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1393 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=509, Invalid=4747, Unknown=0, NotChecked=0, Total=5256 [2021-12-18 00:12:01,246 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 446 mSDsluCounter, 816 mSDsCounter, 0 mSdLazyCounter, 5723 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 478 SdHoareTripleChecker+Valid, 972 SdHoareTripleChecker+Invalid, 6352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 5723 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 300 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2021-12-18 00:12:01,247 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [478 Valid, 972 Invalid, 6352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 5723 Invalid, 0 Unknown, 300 Unchecked, 3.9s Time] [2021-12-18 00:12:01,247 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 781 states. [2021-12-18 00:12:01,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 781 to 696. [2021-12-18 00:12:01,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 696 states, 491 states have (on average 1.0957230142566192) internal successors, (538), 506 states have internal predecessors, (538), 145 states have call successors, (145), 46 states have call predecessors, (145), 59 states have return successors, (214), 145 states have call predecessors, (214), 144 states have call successors, (214) [2021-12-18 00:12:01,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 696 states to 696 states and 897 transitions. [2021-12-18 00:12:01,287 INFO L78 Accepts]: Start accepts. Automaton has 696 states and 897 transitions. Word has length 251 [2021-12-18 00:12:01,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:12:01,288 INFO L470 AbstractCegarLoop]: Abstraction has 696 states and 897 transitions. [2021-12-18 00:12:01,288 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 44 states have (on average 3.659090909090909) internal successors, (161), 41 states have internal predecessors, (161), 17 states have call successors, (66), 7 states have call predecessors, (66), 12 states have return successors, (63), 15 states have call predecessors, (63), 17 states have call successors, (63) [2021-12-18 00:12:01,288 INFO L276 IsEmpty]: Start isEmpty. Operand 696 states and 897 transitions. [2021-12-18 00:12:01,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2021-12-18 00:12:01,291 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:12:01,291 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 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, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:12:01,325 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-12-18 00:12:01,515 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:12:01,515 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:12:01,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:12:01,516 INFO L85 PathProgramCache]: Analyzing trace with hash 1445888193, now seen corresponding path program 1 times [2021-12-18 00:12:01,516 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:12:01,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [106324276] [2021-12-18 00:12:01,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:12:01,516 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:12:01,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:01,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:12:01,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:01,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:12:01,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:01,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:12:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:01,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 00:12:01,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:01,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:12:01,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:01,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 00:12:01,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:01,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 00:12:01,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:01,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:12:01,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:01,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:12:01,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:01,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:12:01,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:01,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:12:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:01,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:12:01,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:01,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:12:01,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:01,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 00:12:01,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:01,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-18 00:12:01,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:01,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:12:01,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:01,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:12:01,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:01,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:12:01,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:01,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-18 00:12:01,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:01,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 00:12:01,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:01,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-18 00:12:01,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:01,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-18 00:12:01,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:01,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-18 00:12:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:01,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2021-12-18 00:12:01,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:01,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 168 [2021-12-18 00:12:01,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:01,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2021-12-18 00:12:01,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:01,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2021-12-18 00:12:01,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:02,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2021-12-18 00:12:02,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:02,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2021-12-18 00:12:02,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:02,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 226 [2021-12-18 00:12:02,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:02,072 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 80 proven. 51 refuted. 0 times theorem prover too weak. 335 trivial. 0 not checked. [2021-12-18 00:12:02,072 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:12:02,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [106324276] [2021-12-18 00:12:02,074 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [106324276] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:12:02,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2123025874] [2021-12-18 00:12:02,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:12:02,074 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:12:02,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:12:02,080 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:12:02,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-12-18 00:12:02,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:02,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 3176 conjuncts, 114 conjunts are in the unsatisfiable core [2021-12-18 00:12:02,917 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:12:02,923 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 00:12:03,041 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 00:12:03,042 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-18 00:12:03,602 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 00:12:03,620 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_6848 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_ensure_byte_buf_has_allocated_buffer_member_#in~buf.base| v_ArrVal_6848))) is different from true [2021-12-18 00:12:03,630 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 26 [2021-12-18 00:12:13,315 INFO L354 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2021-12-18 00:12:13,315 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 53 treesize of output 63 [2021-12-18 00:13:26,097 INFO L134 CoverageAnalysis]: Checked inductivity of 466 backedges. 208 proven. 130 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2021-12-18 00:13:26,097 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:13:28,915 WARN L838 $PredicateComparison]: unable to prove that (forall ((|v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_27| Int) (v_ArrVal_6849 Int) (v_ArrVal_6852 Int) (v_ArrVal_6851 Int)) (let ((.cse0 (select (store |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_27| (store (store (store (store (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_27|) 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_6849) 16 v_ArrVal_6852) 24 v_ArrVal_6851)) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#buf~3#1.base|))) (let ((.cse1 (mod (select .cse0 (+ |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#buf~3#1.offset| 16)) 18446744073709551616))) (or (<= (mod (select .cse0 |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#buf~3#1.offset|) 18446744073709551616) .cse1) (= 0 .cse1))))) is different from false [2021-12-18 00:13:28,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2123025874] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:13:28,941 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 00:13:28,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 30] total 39 [2021-12-18 00:13:28,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222565209] [2021-12-18 00:13:28,941 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 00:13:28,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-12-18 00:13:28,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:13:28,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-12-18 00:13:28,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=1970, Unknown=10, NotChecked=182, Total=2352 [2021-12-18 00:13:28,942 INFO L87 Difference]: Start difference. First operand 696 states and 897 transitions. Second operand has 39 states, 37 states have (on average 4.5675675675675675) internal successors, (169), 34 states have internal predecessors, (169), 14 states have call successors, (57), 11 states have call predecessors, (57), 10 states have return successors, (53), 12 states have call predecessors, (53), 14 states have call successors, (53) [2021-12-18 00:14:33,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:14:33,583 INFO L93 Difference]: Finished difference Result 1299 states and 1722 transitions. [2021-12-18 00:14:33,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2021-12-18 00:14:33,584 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 37 states have (on average 4.5675675675675675) internal successors, (169), 34 states have internal predecessors, (169), 14 states have call successors, (57), 11 states have call predecessors, (57), 10 states have return successors, (53), 12 states have call predecessors, (53), 14 states have call successors, (53) Word has length 246 [2021-12-18 00:14:33,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:14:33,588 INFO L225 Difference]: With dead ends: 1299 [2021-12-18 00:14:33,588 INFO L226 Difference]: Without dead ends: 991 [2021-12-18 00:14:33,590 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 470 GetRequests, 359 SyntacticMatches, 27 SemanticMatches, 84 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2180 ImplicationChecksByTransitivity, 144.5s TimeCoverageRelationStatistics Valid=717, Invalid=6225, Unknown=38, NotChecked=330, Total=7310 [2021-12-18 00:14:33,591 INFO L933 BasicCegarLoop]: 290 mSDtfsCounter, 371 mSDsluCounter, 1642 mSDsCounter, 0 mSdLazyCounter, 4228 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 1932 SdHoareTripleChecker+Invalid, 7708 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 4228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3241 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2021-12-18 00:14:33,591 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [418 Valid, 1932 Invalid, 7708 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 4228 Invalid, 0 Unknown, 3241 Unchecked, 2.9s Time] [2021-12-18 00:14:33,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2021-12-18 00:14:33,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 860. [2021-12-18 00:14:33,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 860 states, 614 states have (on average 1.0814332247557004) internal successors, (664), 631 states have internal predecessors, (664), 171 states have call successors, (171), 62 states have call predecessors, (171), 74 states have return successors, (242), 168 states have call predecessors, (242), 170 states have call successors, (242) [2021-12-18 00:14:33,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 860 states to 860 states and 1077 transitions. [2021-12-18 00:14:33,645 INFO L78 Accepts]: Start accepts. Automaton has 860 states and 1077 transitions. Word has length 246 [2021-12-18 00:14:33,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:14:33,646 INFO L470 AbstractCegarLoop]: Abstraction has 860 states and 1077 transitions. [2021-12-18 00:14:33,646 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 37 states have (on average 4.5675675675675675) internal successors, (169), 34 states have internal predecessors, (169), 14 states have call successors, (57), 11 states have call predecessors, (57), 10 states have return successors, (53), 12 states have call predecessors, (53), 14 states have call successors, (53) [2021-12-18 00:14:33,646 INFO L276 IsEmpty]: Start isEmpty. Operand 860 states and 1077 transitions. [2021-12-18 00:14:33,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 258 [2021-12-18 00:14:33,648 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:14:33,649 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:14:33,675 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2021-12-18 00:14:33,863 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2021-12-18 00:14:33,863 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:14:33,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:14:33,864 INFO L85 PathProgramCache]: Analyzing trace with hash 2117464178, now seen corresponding path program 1 times [2021-12-18 00:14:33,864 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:14:33,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815237660] [2021-12-18 00:14:33,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:14:33,864 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:14:34,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:34,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:14:34,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:34,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:14:34,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:34,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2021-12-18 00:14:34,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:34,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2021-12-18 00:14:34,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:34,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2021-12-18 00:14:34,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:34,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2021-12-18 00:14:34,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:34,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 00:14:34,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:34,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:14:34,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:34,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:14:34,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:34,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:14:34,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:34,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:14:34,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:34,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:14:34,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:34,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:14:34,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:34,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-18 00:14:34,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:34,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-12-18 00:14:34,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:34,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:14:34,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:34,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:14:34,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:34,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:14:34,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:34,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-18 00:14:34,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:34,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2021-12-18 00:14:34,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:34,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2021-12-18 00:14:34,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:34,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2021-12-18 00:14:34,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:35,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-18 00:14:35,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:35,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-18 00:14:35,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:35,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2021-12-18 00:14:35,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:35,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2021-12-18 00:14:35,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:35,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2021-12-18 00:14:35,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:35,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2021-12-18 00:14:35,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:35,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 205 [2021-12-18 00:14:35,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:35,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2021-12-18 00:14:35,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:35,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2021-12-18 00:14:35,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:35,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2021-12-18 00:14:35,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:35,145 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 40 proven. 94 refuted. 0 times theorem prover too weak. 384 trivial. 0 not checked. [2021-12-18 00:14:35,145 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:14:35,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815237660] [2021-12-18 00:14:35,145 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815237660] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:14:35,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1692237569] [2021-12-18 00:14:35,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:14:35,146 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:14:35,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:14:35,147 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:14:35,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-12-18 00:14:35,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:14:35,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 3239 conjuncts, 125 conjunts are in the unsatisfiable core [2021-12-18 00:14:35,934 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:14:35,939 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 00:14:36,116 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 00:14:36,116 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-18 00:14:36,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 00:14:36,878 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7105 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_ensure_byte_buf_has_allocated_buffer_member_#in~buf.base| v_ArrVal_7105))) is different from true [2021-12-18 00:14:36,887 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 26 [2021-12-18 00:14:37,749 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_7106 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| c_save_byte_from_array_~storage.base v_ArrVal_7106))) is different from true [2021-12-18 00:14:37,752 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 00:14:37,765 WARN L860 $PredicateComparison]: unable to prove that (exists ((save_byte_from_array_~storage.base Int) (v_ArrVal_7107 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| save_byte_from_array_~storage.base v_ArrVal_7107))) is different from true [2021-12-18 00:14:37,809 INFO L354 Elim1Store]: treesize reduction 24, result has 48.9 percent of original size [2021-12-18 00:14:37,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 36 treesize of output 51 [2021-12-18 00:14:37,823 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2021-12-18 00:14:37,837 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-12-18 00:14:37,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:14:37,913 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:14:37,914 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:14:37,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:14:37,915 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:14:37,916 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:14:37,934 INFO L354 Elim1Store]: treesize reduction 28, result has 40.4 percent of original size [2021-12-18 00:14:37,934 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 7 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 61 treesize of output 71 [2021-12-18 00:14:40,322 WARN L860 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base| Int) (|v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_BEFORE_CALL_51| Int) (|ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base| Int)) (let ((.cse0 (select (select |c_#memory_int| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|) 0))) (and (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_BEFORE_CALL_51|) 0) .cse0) (not (= |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|)) (not (= 0 (mod (select (select |c_#memory_int| |ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~buf#1.base|) 0) 18446744073709551616))) (not (= 0 (mod .cse0 18446744073709551616)))))) is different from true [2021-12-18 00:15:12,882 INFO L134 CoverageAnalysis]: Checked inductivity of 518 backedges. 326 proven. 90 refuted. 0 times theorem prover too weak. 88 trivial. 14 not checked. [2021-12-18 00:15:12,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:15:19,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1692237569] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:15:19,378 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 00:15:19,378 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 57 [2021-12-18 00:15:19,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1609744209] [2021-12-18 00:15:19,378 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 00:15:19,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2021-12-18 00:15:19,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:15:19,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2021-12-18 00:15:19,379 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=3288, Unknown=28, NotChecked=476, Total=4032 [2021-12-18 00:15:19,379 INFO L87 Difference]: Start difference. First operand 860 states and 1077 transitions. Second operand has 57 states, 51 states have (on average 3.784313725490196) internal successors, (193), 48 states have internal predecessors, (193), 28 states have call successors, (65), 12 states have call predecessors, (65), 17 states have return successors, (62), 25 states have call predecessors, (62), 27 states have call successors, (62) Killed by 15