./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.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_init_copy_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 9248d62da968900adf628e209d21739bec2ffe4f64c1d45016706037787190a6 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 03:15:28,204 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 03:15:28,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 03:15:28,262 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 03:15:28,262 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 03:15:28,266 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 03:15:28,268 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 03:15:28,273 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 03:15:28,275 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 03:15:28,281 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 03:15:28,282 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 03:15:28,283 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 03:15:28,283 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 03:15:28,284 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 03:15:28,285 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 03:15:28,286 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 03:15:28,287 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 03:15:28,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 03:15:28,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 03:15:28,290 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 03:15:28,291 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 03:15:28,292 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 03:15:28,293 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 03:15:28,294 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 03:15:28,297 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 03:15:28,301 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 03:15:28,301 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 03:15:28,302 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 03:15:28,304 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 03:15:28,304 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 03:15:28,305 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 03:15:28,306 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 03:15:28,307 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 03:15:28,308 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 03:15:28,309 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 03:15:28,310 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 03:15:28,311 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 03:15:28,312 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 03:15:28,312 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 03:15:28,313 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 03:15:28,313 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 03:15:28,314 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-16 03:15:28,340 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 03:15:28,341 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 03:15:28,341 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 03:15:28,342 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 03:15:28,343 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 03:15:28,343 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 03:15:28,344 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 03:15:28,344 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 03:15:28,344 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 03:15:28,344 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 03:15:28,344 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 03:15:28,345 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 03:15:28,345 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 03:15:28,345 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 03:15:28,345 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 03:15:28,345 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 03:15:28,346 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 03:15:28,346 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 03:15:28,346 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 03:15:28,346 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 03:15:28,346 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 03:15:28,347 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:15:28,347 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 03:15:28,347 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 03:15:28,347 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 03:15:28,347 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 03:15:28,348 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 03:15:28,348 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 03:15:28,348 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 03:15:28,348 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 03:15:28,348 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 03:15:28,348 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9248d62da968900adf628e209d21739bec2ffe4f64c1d45016706037787190a6 [2021-12-16 03:15:28,598 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 03:15:28,621 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 03:15:28,623 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 03:15:28,624 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 03:15:28,625 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 03:15:28,626 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i [2021-12-16 03:15:28,692 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16977e509/6efabe0a0a3041f8af9461be0c30db35/FLAGbe56b7a9c [2021-12-16 03:15:29,414 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 03:15:29,414 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i [2021-12-16 03:15:29,452 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16977e509/6efabe0a0a3041f8af9461be0c30db35/FLAGbe56b7a9c [2021-12-16 03:15:29,526 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/16977e509/6efabe0a0a3041f8af9461be0c30db35 [2021-12-16 03:15:29,530 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 03:15:29,531 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 03:15:29,533 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 03:15:29,533 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 03:15:29,537 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 03:15:29,538 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:15:29" (1/1) ... [2021-12-16 03:15:29,540 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1dba6928 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:15:29, skipping insertion in model container [2021-12-16 03:15:29,540 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:15:29" (1/1) ... [2021-12-16 03:15:29,546 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 03:15:29,637 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 03:15:29,902 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_init_copy_harness.i[4496,4509] [2021-12-16 03:15:29,911 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_init_copy_harness.i[4556,4569] [2021-12-16 03:15:30,664 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:15:30,664 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:15:30,665 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:15:30,665 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:15:30,666 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:15:30,688 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:15:30,690 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:15:30,692 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:15:30,693 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:15:31,035 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-16 03:15:31,042 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-16 03:15:31,043 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-16 03:15:31,047 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-16 03:15:31,048 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-16 03:15:31,049 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-16 03:15:31,049 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-16 03:15:31,050 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-16 03:15:31,050 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-16 03:15:31,050 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-16 03:15:31,181 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-16 03:15:31,253 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:15:31,254 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:15:31,316 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:15:31,367 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 03:15:31,390 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_init_copy_harness.i[4496,4509] [2021-12-16 03:15:31,392 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_init_copy_harness.i[4556,4569] [2021-12-16 03:15:31,436 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:15:31,438 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:15:31,439 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:15:31,439 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:15:31,440 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:15:31,480 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:15:31,481 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:15:31,481 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:15:31,481 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:15:31,507 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-16 03:15:31,508 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-16 03:15:31,508 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-16 03:15:31,509 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-16 03:15:31,512 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-16 03:15:31,512 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-16 03:15:31,512 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-16 03:15:31,513 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-16 03:15:31,513 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-16 03:15:31,514 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-16 03:15:31,539 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-16 03:15:31,605 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:15:31,605 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:15:31,637 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:15:31,842 INFO L208 MainTranslator]: Completed translation [2021-12-16 03:15:31,843 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:15:31 WrapperNode [2021-12-16 03:15:31,843 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 03:15:31,844 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 03:15:31,844 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 03:15:31,844 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 03:15:31,850 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:15:31" (1/1) ... [2021-12-16 03:15:31,958 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:15:31" (1/1) ... [2021-12-16 03:15:32,046 INFO L137 Inliner]: procedures = 691, calls = 2624, calls flagged for inlining = 63, calls inlined = 11, statements flattened = 937 [2021-12-16 03:15:32,047 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 03:15:32,048 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 03:15:32,048 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 03:15:32,048 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 03:15:32,055 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:15:31" (1/1) ... [2021-12-16 03:15:32,055 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:15:31" (1/1) ... [2021-12-16 03:15:32,067 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:15:31" (1/1) ... [2021-12-16 03:15:32,068 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:15:31" (1/1) ... [2021-12-16 03:15:32,116 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:15:31" (1/1) ... [2021-12-16 03:15:32,131 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:15:31" (1/1) ... [2021-12-16 03:15:32,138 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:15:31" (1/1) ... [2021-12-16 03:15:32,148 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 03:15:32,149 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 03:15:32,149 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 03:15:32,149 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 03:15:32,150 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:15:31" (1/1) ... [2021-12-16 03:15:32,160 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:15:32,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:15:32,189 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) [2021-12-16 03:15:32,200 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 [2021-12-16 03:15:32,225 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-12-16 03:15:32,225 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-12-16 03:15:32,225 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 03:15:32,225 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-16 03:15:32,225 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-16 03:15:32,225 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-12-16 03:15:32,226 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-12-16 03:15:32,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 03:15:32,226 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-16 03:15:32,226 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-16 03:15:32,226 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-16 03:15:32,226 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-16 03:15:32,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 03:15:32,227 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 03:15:32,227 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 03:15:32,227 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-12-16 03:15:32,227 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-12-16 03:15:32,227 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 03:15:32,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 03:15:32,228 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-16 03:15:32,228 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-16 03:15:32,228 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-12-16 03:15:32,228 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-12-16 03:15:32,228 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2021-12-16 03:15:32,228 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2021-12-16 03:15:32,228 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-12-16 03:15:32,229 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-12-16 03:15:32,229 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-16 03:15:32,229 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-16 03:15:32,229 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-12-16 03:15:32,229 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-12-16 03:15:32,229 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2021-12-16 03:15:32,229 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2021-12-16 03:15:32,230 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 03:15:32,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 03:15:32,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-16 03:15:32,230 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-16 03:15:32,230 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-16 03:15:32,230 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-16 03:15:32,230 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-16 03:15:32,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 03:15:32,231 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 03:15:32,485 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 03:15:32,508 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 03:15:33,219 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 03:15:33,228 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 03:15:33,228 INFO L301 CfgBuilder]: Removed 7 assume(true) statements. [2021-12-16 03:15:33,230 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:15:33 BoogieIcfgContainer [2021-12-16 03:15:33,230 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 03:15:33,231 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 03:15:33,232 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 03:15:33,234 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 03:15:33,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:15:29" (1/3) ... [2021-12-16 03:15:33,235 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6afe79f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:15:33, skipping insertion in model container [2021-12-16 03:15:33,235 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:15:31" (2/3) ... [2021-12-16 03:15:33,236 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6afe79f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:15:33, skipping insertion in model container [2021-12-16 03:15:33,236 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:15:33" (3/3) ... [2021-12-16 03:15:33,237 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_init_copy_harness.i [2021-12-16 03:15:33,241 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 03:15:33,241 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 03:15:33,276 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 03:15:33,282 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 [2021-12-16 03:15:33,282 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 03:15:33,299 INFO L276 IsEmpty]: Start isEmpty. Operand has 185 states, 122 states have (on average 1.221311475409836) internal successors, (149), 121 states have internal predecessors, (149), 49 states have call successors, (49), 15 states have call predecessors, (49), 15 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2021-12-16 03:15:33,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2021-12-16 03:15:33,309 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:15:33,310 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 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] [2021-12-16 03:15:33,310 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:15:33,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:15:33,315 INFO L85 PathProgramCache]: Analyzing trace with hash -283420546, now seen corresponding path program 1 times [2021-12-16 03:15:33,322 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:15:33,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1173294005] [2021-12-16 03:15:33,323 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:15:33,324 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:15:33,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:33,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:15:33,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:33,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:15:33,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:33,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 03:15:33,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:33,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:15:33,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:33,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 03:15:33,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:33,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 03:15:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:33,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 03:15:33,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:33,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:15:33,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:33,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 03:15:33,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:33,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-16 03:15:33,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:33,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 03:15:33,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:33,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-16 03:15:33,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:33,994 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-12-16 03:15:33,994 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:15:33,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1173294005] [2021-12-16 03:15:33,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1173294005] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:15:33,996 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:15:33,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 03:15:33,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209534725] [2021-12-16 03:15:33,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:15:34,002 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 03:15:34,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:15:34,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 03:15:34,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:15:34,033 INFO L87 Difference]: Start difference. First operand has 185 states, 122 states have (on average 1.221311475409836) internal successors, (149), 121 states have internal predecessors, (149), 49 states have call successors, (49), 15 states have call predecessors, (49), 15 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-16 03:15:34,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:15:34,345 INFO L93 Difference]: Finished difference Result 376 states and 532 transitions. [2021-12-16 03:15:34,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 03:15:34,349 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 82 [2021-12-16 03:15:34,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:15:34,361 INFO L225 Difference]: With dead ends: 376 [2021-12-16 03:15:34,361 INFO L226 Difference]: Without dead ends: 189 [2021-12-16 03:15:34,368 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:15:34,376 INFO L933 BasicCegarLoop]: 225 mSDtfsCounter, 76 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 03:15:34,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [88 Valid, 294 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 03:15:34,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2021-12-16 03:15:34,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 179. [2021-12-16 03:15:34,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 114 states have (on average 1.1666666666666667) internal successors, (133), 115 states have internal predecessors, (133), 49 states have call successors, (49), 15 states have call predecessors, (49), 15 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2021-12-16 03:15:34,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 230 transitions. [2021-12-16 03:15:34,442 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 230 transitions. Word has length 82 [2021-12-16 03:15:34,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:15:34,442 INFO L470 AbstractCegarLoop]: Abstraction has 179 states and 230 transitions. [2021-12-16 03:15:34,442 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-16 03:15:34,442 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 230 transitions. [2021-12-16 03:15:34,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2021-12-16 03:15:34,446 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:15:34,446 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:15:34,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 03:15:34,447 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:15:34,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:15:34,447 INFO L85 PathProgramCache]: Analyzing trace with hash 426190495, now seen corresponding path program 1 times [2021-12-16 03:15:34,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:15:34,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007885261] [2021-12-16 03:15:34,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:15:34,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:15:34,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:34,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:15:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:34,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:15:34,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:34,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 03:15:34,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:34,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:15:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:34,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 03:15:34,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:34,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 03:15:34,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:34,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 03:15:34,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:34,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:15:34,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:34,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 03:15:34,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:34,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-16 03:15:34,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:34,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 03:15:34,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:34,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-16 03:15:34,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:34,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 03:15:34,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:34,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 03:15:34,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:34,802 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-16 03:15:34,802 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:15:34,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007885261] [2021-12-16 03:15:34,803 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007885261] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:15:34,803 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1920756202] [2021-12-16 03:15:34,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:15:34,803 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:15:34,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:15:34,805 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) [2021-12-16 03:15:34,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-16 03:15:35,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:35,295 INFO L263 TraceCheckSpWp]: Trace formula consists of 2598 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-16 03:15:35,303 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:15:35,538 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-12-16 03:15:35,539 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:15:35,539 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1920756202] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:15:35,539 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:15:35,540 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2021-12-16 03:15:35,541 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2016310454] [2021-12-16 03:15:35,541 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:15:35,542 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:15:35,542 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:15:35,542 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:15:35,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:15:35,543 INFO L87 Difference]: Start difference. First operand 179 states and 230 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-16 03:15:35,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:15:35,581 INFO L93 Difference]: Finished difference Result 248 states and 316 transitions. [2021-12-16 03:15:35,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 03:15:35,582 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 92 [2021-12-16 03:15:35,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:15:35,584 INFO L225 Difference]: With dead ends: 248 [2021-12-16 03:15:35,584 INFO L226 Difference]: Without dead ends: 173 [2021-12-16 03:15:35,585 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-16 03:15:35,586 INFO L933 BasicCegarLoop]: 228 mSDtfsCounter, 1 mSDsluCounter, 902 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1130 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 [2021-12-16 03:15:35,587 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 1130 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:15:35,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-12-16 03:15:35,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2021-12-16 03:15:35,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 110 states have (on average 1.1545454545454545) internal successors, (127), 111 states have internal predecessors, (127), 47 states have call successors, (47), 15 states have call predecessors, (47), 15 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2021-12-16 03:15:35,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 220 transitions. [2021-12-16 03:15:35,600 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 220 transitions. Word has length 92 [2021-12-16 03:15:35,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:15:35,601 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 220 transitions. [2021-12-16 03:15:35,601 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-16 03:15:35,602 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 220 transitions. [2021-12-16 03:15:35,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-16 03:15:35,603 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:15:35,603 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:15:35,635 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-16 03:15:35,819 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 [2021-12-16 03:15:35,820 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:15:35,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:15:35,820 INFO L85 PathProgramCache]: Analyzing trace with hash -1901749225, now seen corresponding path program 1 times [2021-12-16 03:15:35,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:15:35,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1309609555] [2021-12-16 03:15:35,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:15:35,821 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:15:35,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:35,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:15:35,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:35,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:15:35,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:36,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 03:15:36,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:36,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:15:36,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:36,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 03:15:36,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:36,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 03:15:36,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:36,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 03:15:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:36,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:15:36,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:36,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 03:15:36,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:36,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-16 03:15:36,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:36,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 03:15:36,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:36,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-16 03:15:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:36,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 03:15:36,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:36,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-16 03:15:36,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:36,166 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-16 03:15:36,167 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:15:36,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1309609555] [2021-12-16 03:15:36,169 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1309609555] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:15:36,170 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1258710643] [2021-12-16 03:15:36,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:15:36,170 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:15:36,170 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:15:36,171 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) [2021-12-16 03:15:36,173 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-16 03:15:36,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:36,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 2622 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-16 03:15:36,619 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:15:36,867 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-12-16 03:15:36,868 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:15:36,868 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1258710643] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:15:36,868 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:15:36,868 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 11 [2021-12-16 03:15:36,869 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797491129] [2021-12-16 03:15:36,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:15:36,869 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 03:15:36,869 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:15:36,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 03:15:36,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:15:36,870 INFO L87 Difference]: Start difference. First operand 173 states and 220 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-16 03:15:37,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:15:37,071 INFO L93 Difference]: Finished difference Result 249 states and 320 transitions. [2021-12-16 03:15:37,071 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 03:15:37,072 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) Word has length 95 [2021-12-16 03:15:37,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:15:37,074 INFO L225 Difference]: With dead ends: 249 [2021-12-16 03:15:37,074 INFO L226 Difference]: Without dead ends: 176 [2021-12-16 03:15:37,074 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2021-12-16 03:15:37,075 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 78 mSDsluCounter, 915 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 128 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 03:15:37,076 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 1119 Invalid, 128 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 03:15:37,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-12-16 03:15:37,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2021-12-16 03:15:37,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 112 states have (on average 1.1517857142857142) internal successors, (129), 114 states have internal predecessors, (129), 47 states have call successors, (47), 15 states have call predecessors, (47), 16 states have return successors, (49), 46 states have call predecessors, (49), 46 states have call successors, (49) [2021-12-16 03:15:37,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 225 transitions. [2021-12-16 03:15:37,107 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 225 transitions. Word has length 95 [2021-12-16 03:15:37,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:15:37,108 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 225 transitions. [2021-12-16 03:15:37,108 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2021-12-16 03:15:37,108 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 225 transitions. [2021-12-16 03:15:37,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-16 03:15:37,110 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:15:37,110 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:15:37,137 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-16 03:15:37,335 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 [2021-12-16 03:15:37,336 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:15:37,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:15:37,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1019605314, now seen corresponding path program 1 times [2021-12-16 03:15:37,337 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:15:37,337 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515942756] [2021-12-16 03:15:37,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:15:37,337 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:15:37,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:37,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:15:37,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:37,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:15:37,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:37,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 03:15:37,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:37,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:15:37,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:37,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 03:15:37,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:37,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 03:15:37,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:37,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 03:15:37,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:37,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:15:37,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:37,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-16 03:15:37,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:37,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2021-12-16 03:15:37,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:37,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 03:15:37,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:37,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-16 03:15:37,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:37,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 03:15:37,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:37,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2021-12-16 03:15:37,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:37,706 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2021-12-16 03:15:37,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:15:37,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515942756] [2021-12-16 03:15:37,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515942756] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:15:37,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [87932245] [2021-12-16 03:15:37,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:15:37,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:15:37,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:15:37,708 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) [2021-12-16 03:15:37,738 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-16 03:15:38,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:38,150 INFO L263 TraceCheckSpWp]: Trace formula consists of 2639 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 03:15:38,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:15:38,386 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-16 03:15:38,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:15:38,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [87932245] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:15:38,387 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:15:38,387 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2021-12-16 03:15:38,387 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205316767] [2021-12-16 03:15:38,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:15:38,388 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:15:38,388 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:15:38,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:15:38,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:15:38,389 INFO L87 Difference]: Start difference. First operand 176 states and 225 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 03:15:38,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:15:38,568 INFO L93 Difference]: Finished difference Result 338 states and 429 transitions. [2021-12-16 03:15:38,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 03:15:38,569 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 101 [2021-12-16 03:15:38,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:15:38,570 INFO L225 Difference]: With dead ends: 338 [2021-12-16 03:15:38,570 INFO L226 Difference]: Without dead ends: 176 [2021-12-16 03:15:38,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2021-12-16 03:15:38,572 INFO L933 BasicCegarLoop]: 176 mSDtfsCounter, 249 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:15:38,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [249 Valid, 481 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:15:38,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2021-12-16 03:15:38,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2021-12-16 03:15:38,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 112 states have (on average 1.1517857142857142) internal successors, (129), 114 states have internal predecessors, (129), 47 states have call successors, (47), 15 states have call predecessors, (47), 16 states have return successors, (47), 46 states have call predecessors, (47), 46 states have call successors, (47) [2021-12-16 03:15:38,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 223 transitions. [2021-12-16 03:15:38,586 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 223 transitions. Word has length 101 [2021-12-16 03:15:38,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:15:38,586 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 223 transitions. [2021-12-16 03:15:38,586 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 03:15:38,586 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 223 transitions. [2021-12-16 03:15:38,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-16 03:15:38,588 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:15:38,588 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 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] [2021-12-16 03:15:38,617 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-16 03:15:38,811 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 [2021-12-16 03:15:38,811 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:15:38,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:15:38,812 INFO L85 PathProgramCache]: Analyzing trace with hash -2090058387, now seen corresponding path program 2 times [2021-12-16 03:15:38,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:15:38,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [991933204] [2021-12-16 03:15:38,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:15:38,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:15:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:38,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:15:38,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:38,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:15:38,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:38,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 03:15:38,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:38,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:15:38,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:38,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 03:15:38,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:39,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 03:15:39,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:39,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:15:39,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:39,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:15:39,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:39,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-16 03:15:39,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:39,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-16 03:15:39,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:39,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-16 03:15:39,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:39,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-16 03:15:39,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:39,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-16 03:15:39,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:39,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-16 03:15:39,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:39,109 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-12-16 03:15:39,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:15:39,109 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [991933204] [2021-12-16 03:15:39,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [991933204] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:15:39,110 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [161317203] [2021-12-16 03:15:39,110 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 03:15:39,110 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:15:39,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:15:39,111 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) [2021-12-16 03:15:39,113 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-16 03:15:39,468 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-16 03:15:39,468 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:15:39,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 2303 conjuncts, 11 conjunts are in the unsatisfiable core [2021-12-16 03:15:39,482 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:15:39,698 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2021-12-16 03:15:39,698 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:15:39,698 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [161317203] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:15:39,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:15:39,699 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2021-12-16 03:15:39,699 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1169693308] [2021-12-16 03:15:39,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:15:39,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 03:15:39,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:15:39,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 03:15:39,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-12-16 03:15:39,701 INFO L87 Difference]: Start difference. First operand 176 states and 223 transitions. Second operand has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-16 03:15:39,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:15:39,765 INFO L93 Difference]: Finished difference Result 188 states and 240 transitions. [2021-12-16 03:15:39,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 03:15:39,775 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 107 [2021-12-16 03:15:39,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:15:39,777 INFO L225 Difference]: With dead ends: 188 [2021-12-16 03:15:39,777 INFO L226 Difference]: Without dead ends: 186 [2021-12-16 03:15:39,777 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2021-12-16 03:15:39,778 INFO L933 BasicCegarLoop]: 219 mSDtfsCounter, 22 mSDsluCounter, 1274 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 55 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:15:39,779 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 1493 Invalid, 55 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:15:39,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2021-12-16 03:15:39,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 185. [2021-12-16 03:15:39,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 118 states have (on average 1.1440677966101696) internal successors, (135), 121 states have internal predecessors, (135), 48 states have call successors, (48), 16 states have call predecessors, (48), 18 states have return successors, (54), 47 states have call predecessors, (54), 47 states have call successors, (54) [2021-12-16 03:15:39,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 237 transitions. [2021-12-16 03:15:39,792 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 237 transitions. Word has length 107 [2021-12-16 03:15:39,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:15:39,792 INFO L470 AbstractCegarLoop]: Abstraction has 185 states and 237 transitions. [2021-12-16 03:15:39,792 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-16 03:15:39,793 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 237 transitions. [2021-12-16 03:15:39,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-12-16 03:15:39,794 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:15:39,794 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:15:39,827 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-16 03:15:40,019 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 [2021-12-16 03:15:40,019 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:15:40,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:15:40,020 INFO L85 PathProgramCache]: Analyzing trace with hash -1813963275, now seen corresponding path program 1 times [2021-12-16 03:15:40,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:15:40,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258556435] [2021-12-16 03:15:40,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:15:40,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:15:40,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:40,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:15:40,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:40,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:15:40,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:40,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 03:15:40,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:40,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:15:40,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:40,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 03:15:40,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:40,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 03:15:40,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:40,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:15:40,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:40,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:15:40,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:40,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-16 03:15:40,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:40,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-16 03:15:40,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:40,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-16 03:15:40,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:40,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-16 03:15:40,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:40,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-16 03:15:40,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:40,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-16 03:15:40,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:40,301 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-12-16 03:15:40,301 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:15:40,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258556435] [2021-12-16 03:15:40,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258556435] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:15:40,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1563054892] [2021-12-16 03:15:40,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:15:40,302 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:15:40,302 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:15:40,303 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) [2021-12-16 03:15:40,305 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-16 03:15:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:40,754 INFO L263 TraceCheckSpWp]: Trace formula consists of 2668 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 03:15:40,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:15:41,053 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2021-12-16 03:15:41,053 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:15:41,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1563054892] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:15:41,054 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:15:41,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2021-12-16 03:15:41,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1044150259] [2021-12-16 03:15:41,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:15:41,055 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 03:15:41,055 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:15:41,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 03:15:41,056 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2021-12-16 03:15:41,056 INFO L87 Difference]: Start difference. First operand 185 states and 237 transitions. Second operand has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-16 03:15:41,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:15:41,292 INFO L93 Difference]: Finished difference Result 342 states and 429 transitions. [2021-12-16 03:15:41,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:15:41,293 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 111 [2021-12-16 03:15:41,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:15:41,294 INFO L225 Difference]: With dead ends: 342 [2021-12-16 03:15:41,294 INFO L226 Difference]: Without dead ends: 182 [2021-12-16 03:15:41,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2021-12-16 03:15:41,296 INFO L933 BasicCegarLoop]: 173 mSDtfsCounter, 275 mSDsluCounter, 602 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 03:15:41,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [275 Valid, 775 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 03:15:41,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-12-16 03:15:41,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2021-12-16 03:15:41,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 116 states have (on average 1.1379310344827587) internal successors, (132), 118 states have internal predecessors, (132), 48 states have call successors, (48), 16 states have call predecessors, (48), 17 states have return successors, (53), 47 states have call predecessors, (53), 47 states have call successors, (53) [2021-12-16 03:15:41,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 233 transitions. [2021-12-16 03:15:41,307 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 233 transitions. Word has length 111 [2021-12-16 03:15:41,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:15:41,307 INFO L470 AbstractCegarLoop]: Abstraction has 182 states and 233 transitions. [2021-12-16 03:15:41,307 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2021-12-16 03:15:41,308 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 233 transitions. [2021-12-16 03:15:41,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2021-12-16 03:15:41,309 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:15:41,309 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:15:41,340 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-16 03:15:41,535 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 [2021-12-16 03:15:41,536 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:15:41,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:15:41,536 INFO L85 PathProgramCache]: Analyzing trace with hash 693216864, now seen corresponding path program 1 times [2021-12-16 03:15:41,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:15:41,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16455741] [2021-12-16 03:15:41,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:15:41,537 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:15:41,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:41,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:15:41,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:41,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:15:41,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:41,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 03:15:41,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:41,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:15:41,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:41,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 03:15:41,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:41,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 03:15:41,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:41,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:15:41,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:41,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:15:41,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:41,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-16 03:15:41,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:41,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-16 03:15:41,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:41,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-16 03:15:41,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:41,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-16 03:15:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:41,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-16 03:15:41,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:41,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-16 03:15:41,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:41,904 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-16 03:15:41,904 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:15:41,904 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16455741] [2021-12-16 03:15:41,905 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16455741] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:15:41,905 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:15:41,905 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-16 03:15:41,905 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720734898] [2021-12-16 03:15:41,905 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:15:41,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:15:41,906 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:15:41,906 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:15:41,906 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:15:41,907 INFO L87 Difference]: Start difference. First operand 182 states and 233 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-16 03:15:42,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:15:42,398 INFO L93 Difference]: Finished difference Result 286 states and 361 transitions. [2021-12-16 03:15:42,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:15:42,398 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2021-12-16 03:15:42,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:15:42,400 INFO L225 Difference]: With dead ends: 286 [2021-12-16 03:15:42,400 INFO L226 Difference]: Without dead ends: 200 [2021-12-16 03:15:42,400 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-12-16 03:15:42,401 INFO L933 BasicCegarLoop]: 193 mSDtfsCounter, 166 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 522 SdHoareTripleChecker+Invalid, 447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 03:15:42,401 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [167 Valid, 522 Invalid, 447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 03:15:42,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-12-16 03:15:42,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 183. [2021-12-16 03:15:42,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 117 states have (on average 1.1367521367521367) internal successors, (133), 119 states have internal predecessors, (133), 48 states have call successors, (48), 16 states have call predecessors, (48), 17 states have return successors, (53), 47 states have call predecessors, (53), 47 states have call successors, (53) [2021-12-16 03:15:42,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 234 transitions. [2021-12-16 03:15:42,412 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 234 transitions. Word has length 117 [2021-12-16 03:15:42,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:15:42,413 INFO L470 AbstractCegarLoop]: Abstraction has 183 states and 234 transitions. [2021-12-16 03:15:42,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2021-12-16 03:15:42,413 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 234 transitions. [2021-12-16 03:15:42,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-16 03:15:42,414 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:15:42,415 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:15:42,415 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-16 03:15:42,415 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:15:42,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:15:42,415 INFO L85 PathProgramCache]: Analyzing trace with hash -1457718631, now seen corresponding path program 1 times [2021-12-16 03:15:42,416 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:15:42,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137820861] [2021-12-16 03:15:42,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:15:42,416 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:15:42,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:42,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:15:42,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:42,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:15:42,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:42,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 03:15:42,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:42,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:15:42,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:42,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 03:15:42,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:42,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 03:15:42,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:42,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:15:42,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:42,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:15:42,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:42,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-16 03:15:42,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:42,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-16 03:15:42,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:42,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-16 03:15:42,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:42,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-16 03:15:42,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:42,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-16 03:15:42,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:42,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 03:15:42,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:42,727 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-16 03:15:42,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:15:42,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137820861] [2021-12-16 03:15:42,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1137820861] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:15:42,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2059305385] [2021-12-16 03:15:42,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:15:42,729 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:15:42,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:15:42,730 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) [2021-12-16 03:15:42,759 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-16 03:15:43,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:43,212 INFO L263 TraceCheckSpWp]: Trace formula consists of 2704 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 03:15:43,216 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:15:43,511 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2021-12-16 03:15:43,511 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:15:43,511 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2059305385] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:15:43,512 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:15:43,512 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2021-12-16 03:15:43,512 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110897450] [2021-12-16 03:15:43,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:15:43,512 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:15:43,512 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:15:43,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:15:43,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-16 03:15:43,513 INFO L87 Difference]: Start difference. First operand 183 states and 234 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-16 03:15:43,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:15:43,684 INFO L93 Difference]: Finished difference Result 370 states and 486 transitions. [2021-12-16 03:15:43,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:15:43,684 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 118 [2021-12-16 03:15:43,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:15:43,686 INFO L225 Difference]: With dead ends: 370 [2021-12-16 03:15:43,686 INFO L226 Difference]: Without dead ends: 201 [2021-12-16 03:15:43,687 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:15:43,688 INFO L933 BasicCegarLoop]: 223 mSDtfsCounter, 40 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:15:43,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 782 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 40 Unchecked, 0.1s Time] [2021-12-16 03:15:43,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2021-12-16 03:15:43,696 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 188. [2021-12-16 03:15:43,697 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 122 states have (on average 1.1475409836065573) internal successors, (140), 124 states have internal predecessors, (140), 48 states have call successors, (48), 16 states have call predecessors, (48), 17 states have return successors, (53), 47 states have call predecessors, (53), 47 states have call successors, (53) [2021-12-16 03:15:43,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 241 transitions. [2021-12-16 03:15:43,698 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 241 transitions. Word has length 118 [2021-12-16 03:15:43,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:15:43,699 INFO L470 AbstractCegarLoop]: Abstraction has 188 states and 241 transitions. [2021-12-16 03:15:43,699 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2021-12-16 03:15:43,699 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 241 transitions. [2021-12-16 03:15:43,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-16 03:15:43,704 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:15:43,704 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:15:43,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-16 03:15:43,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:15:43,925 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:15:43,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:15:43,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1199553193, now seen corresponding path program 1 times [2021-12-16 03:15:43,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:15:43,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634761986] [2021-12-16 03:15:43,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:15:43,926 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:15:44,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:44,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:15:44,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:44,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:15:44,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:44,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 03:15:44,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:44,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:15:44,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:44,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 03:15:44,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:44,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 03:15:44,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:44,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:15:44,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:44,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:15:44,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:44,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-16 03:15:44,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:44,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-16 03:15:44,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:44,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-16 03:15:44,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:44,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-16 03:15:44,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:44,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-16 03:15:44,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:44,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 03:15:44,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:44,249 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2021-12-16 03:15:44,249 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:15:44,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634761986] [2021-12-16 03:15:44,250 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634761986] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:15:44,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119911409] [2021-12-16 03:15:44,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:15:44,250 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:15:44,250 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:15:44,252 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) [2021-12-16 03:15:44,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-16 03:15:44,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:44,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 2699 conjuncts, 36 conjunts are in the unsatisfiable core [2021-12-16 03:15:44,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:15:44,915 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 [2021-12-16 03:15:45,267 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 59 proven. 0 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-16 03:15:45,267 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:15:45,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119911409] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:15:45,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:15:45,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [7] total 17 [2021-12-16 03:15:45,268 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1781780828] [2021-12-16 03:15:45,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:15:45,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-16 03:15:45,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:15:45,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-16 03:15:45,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=230, Unknown=0, NotChecked=0, Total=272 [2021-12-16 03:15:45,269 INFO L87 Difference]: Start difference. First operand 188 states and 241 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 10 states have internal predecessors, (68), 5 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2021-12-16 03:15:45,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:15:45,331 INFO L93 Difference]: Finished difference Result 385 states and 490 transitions. [2021-12-16 03:15:45,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 03:15:45,331 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 10 states have internal predecessors, (68), 5 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 118 [2021-12-16 03:15:45,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:15:45,333 INFO L225 Difference]: With dead ends: 385 [2021-12-16 03:15:45,333 INFO L226 Difference]: Without dead ends: 207 [2021-12-16 03:15:45,334 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 135 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=48, Invalid=258, Unknown=0, NotChecked=0, Total=306 [2021-12-16 03:15:45,336 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 32 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1017 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 70 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:15:45,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 1017 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 70 Unchecked, 0.0s Time] [2021-12-16 03:15:45,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-12-16 03:15:45,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 207. [2021-12-16 03:15:45,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 140 states have (on average 1.1642857142857144) internal successors, (163), 142 states have internal predecessors, (163), 48 states have call successors, (48), 17 states have call predecessors, (48), 18 states have return successors, (53), 47 states have call predecessors, (53), 47 states have call successors, (53) [2021-12-16 03:15:45,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 264 transitions. [2021-12-16 03:15:45,350 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 264 transitions. Word has length 118 [2021-12-16 03:15:45,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:15:45,350 INFO L470 AbstractCegarLoop]: Abstraction has 207 states and 264 transitions. [2021-12-16 03:15:45,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 10 states have internal predecessors, (68), 5 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2021-12-16 03:15:45,351 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 264 transitions. [2021-12-16 03:15:45,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2021-12-16 03:15:45,353 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:15:45,353 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:15:45,384 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-16 03:15:45,559 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:15:45,560 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:15:45,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:15:45,560 INFO L85 PathProgramCache]: Analyzing trace with hash 1136839317, now seen corresponding path program 1 times [2021-12-16 03:15:45,560 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:15:45,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866315780] [2021-12-16 03:15:45,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:15:45,560 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:15:45,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:45,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:15:45,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:45,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:15:45,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:45,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 03:15:45,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:45,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:15:45,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:45,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 03:15:45,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:45,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 03:15:45,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:45,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:15:45,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:45,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:15:45,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:45,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2021-12-16 03:15:45,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:45,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-16 03:15:45,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:45,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2021-12-16 03:15:45,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:45,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2021-12-16 03:15:45,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:45,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-16 03:15:45,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:45,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 03:15:45,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:45,771 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2021-12-16 03:15:45,772 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:15:45,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866315780] [2021-12-16 03:15:45,772 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866315780] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:15:45,772 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [626480246] [2021-12-16 03:15:45,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:15:45,773 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:15:45,773 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:15:45,774 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) [2021-12-16 03:15:45,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-16 03:15:46,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:46,240 INFO L263 TraceCheckSpWp]: Trace formula consists of 2694 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 03:15:46,244 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:15:46,424 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-12-16 03:15:46,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:15:46,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [626480246] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:15:46,425 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:15:46,425 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2021-12-16 03:15:46,425 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1390226382] [2021-12-16 03:15:46,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:15:46,426 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:15:46,426 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:15:46,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:15:46,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:15:46,427 INFO L87 Difference]: Start difference. First operand 207 states and 264 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 03:15:46,450 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:15:46,450 INFO L93 Difference]: Finished difference Result 394 states and 507 transitions. [2021-12-16 03:15:46,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:15:46,451 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 118 [2021-12-16 03:15:46,451 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:15:46,452 INFO L225 Difference]: With dead ends: 394 [2021-12-16 03:15:46,452 INFO L226 Difference]: Without dead ends: 216 [2021-12-16 03:15:46,453 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 146 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-16 03:15:46,454 INFO L933 BasicCegarLoop]: 230 mSDtfsCounter, 20 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 649 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 [2021-12-16 03:15:46,455 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 649 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:15:46,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-12-16 03:15:46,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 199. [2021-12-16 03:15:46,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 133 states have (on average 1.1578947368421053) internal successors, (154), 134 states have internal predecessors, (154), 48 states have call successors, (48), 17 states have call predecessors, (48), 17 states have return successors, (52), 47 states have call predecessors, (52), 47 states have call successors, (52) [2021-12-16 03:15:46,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 254 transitions. [2021-12-16 03:15:46,465 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 254 transitions. Word has length 118 [2021-12-16 03:15:46,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:15:46,466 INFO L470 AbstractCegarLoop]: Abstraction has 199 states and 254 transitions. [2021-12-16 03:15:46,466 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 03:15:46,466 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 254 transitions. [2021-12-16 03:15:46,467 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2021-12-16 03:15:46,467 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:15:46,468 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:15:46,496 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-16 03:15:46,681 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,SelfDestructingSolverStorable9 [2021-12-16 03:15:46,682 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:15:46,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:15:46,682 INFO L85 PathProgramCache]: Analyzing trace with hash -2078172463, now seen corresponding path program 2 times [2021-12-16 03:15:46,682 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:15:46,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279924566] [2021-12-16 03:15:46,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:15:46,683 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:15:46,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:46,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:15:46,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:46,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:15:46,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:46,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 03:15:46,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:46,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:15:46,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:46,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 03:15:46,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:46,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 03:15:46,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:46,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2021-12-16 03:15:46,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:46,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:15:46,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:46,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-16 03:15:46,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:46,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2021-12-16 03:15:46,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:46,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-16 03:15:46,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:46,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-16 03:15:46,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:46,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2021-12-16 03:15:46,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:46,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-16 03:15:46,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:46,968 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-12-16 03:15:46,969 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:15:46,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279924566] [2021-12-16 03:15:46,969 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279924566] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:15:46,969 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [295065154] [2021-12-16 03:15:46,969 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 03:15:46,969 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:15:46,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:15:46,972 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) [2021-12-16 03:15:46,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-16 03:15:47,856 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 03:15:47,856 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:15:47,866 INFO L263 TraceCheckSpWp]: Trace formula consists of 2706 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-16 03:15:47,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:15:48,111 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 73 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-16 03:15:48,111 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:15:48,112 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [295065154] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:15:48,112 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:15:48,112 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [7] total 14 [2021-12-16 03:15:48,112 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077525579] [2021-12-16 03:15:48,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:15:48,113 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 03:15:48,113 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:15:48,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 03:15:48,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=157, Unknown=0, NotChecked=0, Total=182 [2021-12-16 03:15:48,114 INFO L87 Difference]: Start difference. First operand 199 states and 254 transitions. Second operand has 9 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 03:15:48,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:15:48,251 INFO L93 Difference]: Finished difference Result 382 states and 488 transitions. [2021-12-16 03:15:48,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 03:15:48,254 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 122 [2021-12-16 03:15:48,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:15:48,255 INFO L225 Difference]: With dead ends: 382 [2021-12-16 03:15:48,255 INFO L226 Difference]: Without dead ends: 204 [2021-12-16 03:15:48,256 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 156 GetRequests, 141 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2021-12-16 03:15:48,257 INFO L933 BasicCegarLoop]: 208 mSDtfsCounter, 12 mSDsluCounter, 1410 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1618 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:15:48,257 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1618 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:15:48,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2021-12-16 03:15:48,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 204. [2021-12-16 03:15:48,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 137 states have (on average 1.1532846715328466) internal successors, (158), 139 states have internal predecessors, (158), 48 states have call successors, (48), 17 states have call predecessors, (48), 18 states have return successors, (57), 47 states have call predecessors, (57), 47 states have call successors, (57) [2021-12-16 03:15:48,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 263 transitions. [2021-12-16 03:15:48,267 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 263 transitions. Word has length 122 [2021-12-16 03:15:48,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:15:48,267 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 263 transitions. [2021-12-16 03:15:48,268 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 3 states have call successors, (15), 2 states have call predecessors, (15), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 03:15:48,268 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 263 transitions. [2021-12-16 03:15:48,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-16 03:15:48,269 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:15:48,269 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:15:48,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-16 03:15:48,487 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 [2021-12-16 03:15:48,487 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:15:48,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:15:48,488 INFO L85 PathProgramCache]: Analyzing trace with hash -657370164, now seen corresponding path program 1 times [2021-12-16 03:15:48,488 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:15:48,488 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1777947229] [2021-12-16 03:15:48,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:15:48,488 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:15:48,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:48,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:15:48,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:48,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:15:48,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:48,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 03:15:48,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:48,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:15:48,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:48,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 03:15:48,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:48,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:15:48,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:48,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 03:15:48,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:48,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:15:48,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:48,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 03:15:48,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:48,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-16 03:15:48,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:48,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 03:15:48,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:48,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-16 03:15:48,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:48,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-16 03:15:48,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:48,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-16 03:15:48,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:48,705 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-12-16 03:15:48,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:15:48,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1777947229] [2021-12-16 03:15:48,706 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1777947229] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:15:48,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2040404341] [2021-12-16 03:15:48,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:15:48,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:15:48,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:15:48,708 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) [2021-12-16 03:15:48,731 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-16 03:15:49,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:49,183 INFO L263 TraceCheckSpWp]: Trace formula consists of 2711 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 03:15:49,187 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:15:49,379 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-12-16 03:15:49,379 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:15:49,379 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2040404341] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:15:49,379 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:15:49,380 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2021-12-16 03:15:49,380 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [352950818] [2021-12-16 03:15:49,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:15:49,380 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:15:49,380 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:15:49,380 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:15:49,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:15:49,381 INFO L87 Difference]: Start difference. First operand 204 states and 263 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 03:15:49,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:15:49,407 INFO L93 Difference]: Finished difference Result 392 states and 508 transitions. [2021-12-16 03:15:49,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:15:49,407 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 124 [2021-12-16 03:15:49,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:15:49,409 INFO L225 Difference]: With dead ends: 392 [2021-12-16 03:15:49,409 INFO L226 Difference]: Without dead ends: 207 [2021-12-16 03:15:49,410 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-16 03:15:49,410 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 9 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 642 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 [2021-12-16 03:15:49,411 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 642 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:15:49,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2021-12-16 03:15:49,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 204. [2021-12-16 03:15:49,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 204 states, 137 states have (on average 1.1386861313868613) internal successors, (156), 139 states have internal predecessors, (156), 48 states have call successors, (48), 17 states have call predecessors, (48), 18 states have return successors, (57), 47 states have call predecessors, (57), 47 states have call successors, (57) [2021-12-16 03:15:49,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 261 transitions. [2021-12-16 03:15:49,420 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 261 transitions. Word has length 124 [2021-12-16 03:15:49,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:15:49,421 INFO L470 AbstractCegarLoop]: Abstraction has 204 states and 261 transitions. [2021-12-16 03:15:49,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 03:15:49,421 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 261 transitions. [2021-12-16 03:15:49,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-16 03:15:49,422 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:15:49,422 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:15:49,452 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-16 03:15:49,635 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 [2021-12-16 03:15:49,635 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:15:49,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:15:49,636 INFO L85 PathProgramCache]: Analyzing trace with hash -1505611512, now seen corresponding path program 1 times [2021-12-16 03:15:49,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:15:49,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1585942097] [2021-12-16 03:15:49,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:15:49,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:15:49,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:49,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:15:49,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:49,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:15:49,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:49,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 03:15:49,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:49,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:15:49,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:49,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 03:15:49,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:49,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:15:49,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:49,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 03:15:49,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:49,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:15:49,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:49,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 03:15:49,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:49,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-16 03:15:49,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:49,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 03:15:49,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:49,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-16 03:15:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:49,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-16 03:15:49,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:49,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-16 03:15:49,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:49,846 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-12-16 03:15:49,846 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:15:49,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1585942097] [2021-12-16 03:15:49,846 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1585942097] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:15:49,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972860603] [2021-12-16 03:15:49,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:15:49,847 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:15:49,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:15:49,848 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) [2021-12-16 03:15:49,875 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-16 03:15:50,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:50,286 INFO L263 TraceCheckSpWp]: Trace formula consists of 2713 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 03:15:50,289 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:15:50,448 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-12-16 03:15:50,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:15:50,449 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972860603] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:15:50,449 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:15:50,449 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2021-12-16 03:15:50,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562213681] [2021-12-16 03:15:50,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:15:50,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:15:50,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:15:50,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:15:50,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:15:50,450 INFO L87 Difference]: Start difference. First operand 204 states and 261 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 03:15:50,475 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:15:50,475 INFO L93 Difference]: Finished difference Result 398 states and 520 transitions. [2021-12-16 03:15:50,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:15:50,475 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 124 [2021-12-16 03:15:50,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:15:50,477 INFO L225 Difference]: With dead ends: 398 [2021-12-16 03:15:50,477 INFO L226 Difference]: Without dead ends: 213 [2021-12-16 03:15:50,478 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-16 03:15:50,479 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 34 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 640 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 [2021-12-16 03:15:50,479 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 640 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:15:50,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2021-12-16 03:15:50,486 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 200. [2021-12-16 03:15:50,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 133 states have (on average 1.1203007518796992) internal successors, (149), 135 states have internal predecessors, (149), 48 states have call successors, (48), 17 states have call predecessors, (48), 18 states have return successors, (57), 47 states have call predecessors, (57), 47 states have call successors, (57) [2021-12-16 03:15:50,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 254 transitions. [2021-12-16 03:15:50,488 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 254 transitions. Word has length 124 [2021-12-16 03:15:50,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:15:50,489 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 254 transitions. [2021-12-16 03:15:50,489 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 03:15:50,489 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 254 transitions. [2021-12-16 03:15:50,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-16 03:15:50,490 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:15:50,490 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:15:50,516 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-16 03:15:50,703 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 [2021-12-16 03:15:50,704 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:15:50,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:15:50,704 INFO L85 PathProgramCache]: Analyzing trace with hash -1534111802, now seen corresponding path program 1 times [2021-12-16 03:15:50,704 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:15:50,704 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [163683557] [2021-12-16 03:15:50,704 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:15:50,704 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:15:50,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:50,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:15:50,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:50,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:15:50,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:50,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 03:15:50,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:50,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:15:50,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:50,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 03:15:50,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:50,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:15:50,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:50,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 03:15:50,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:50,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:15:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:50,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 03:15:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:50,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-16 03:15:50,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:50,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2021-12-16 03:15:50,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:50,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2021-12-16 03:15:50,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:50,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-16 03:15:50,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:51,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-16 03:15:51,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:51,030 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-12-16 03:15:51,031 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:15:51,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [163683557] [2021-12-16 03:15:51,031 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [163683557] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:15:51,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791409873] [2021-12-16 03:15:51,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:15:51,031 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:15:51,032 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:15:51,033 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) [2021-12-16 03:15:51,056 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-16 03:15:51,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:51,474 INFO L263 TraceCheckSpWp]: Trace formula consists of 2708 conjuncts, 39 conjunts are in the unsatisfiable core [2021-12-16 03:15:51,477 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:15:51,585 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 [2021-12-16 03:15:52,093 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 16 treesize of output 8 [2021-12-16 03:15:52,139 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2021-12-16 03:15:52,139 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:15:52,370 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 40 treesize of output 34 [2021-12-16 03:15:52,497 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2021-12-16 03:15:52,497 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791409873] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 03:15:52,497 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 03:15:52,498 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 10, 8] total 19 [2021-12-16 03:15:52,498 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233403981] [2021-12-16 03:15:52,498 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 03:15:52,499 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2021-12-16 03:15:52,499 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:15:52,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2021-12-16 03:15:52,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=295, Unknown=0, NotChecked=0, Total=342 [2021-12-16 03:15:52,500 INFO L87 Difference]: Start difference. First operand 200 states and 254 transitions. Second operand has 19 states, 19 states have (on average 7.315789473684211) internal successors, (139), 15 states have internal predecessors, (139), 10 states have call successors, (37), 5 states have call predecessors, (37), 5 states have return successors, (36), 12 states have call predecessors, (36), 10 states have call successors, (36) [2021-12-16 03:15:54,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:15:54,158 INFO L93 Difference]: Finished difference Result 455 states and 596 transitions. [2021-12-16 03:15:54,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2021-12-16 03:15:54,158 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 19 states have (on average 7.315789473684211) internal successors, (139), 15 states have internal predecessors, (139), 10 states have call successors, (37), 5 states have call predecessors, (37), 5 states have return successors, (36), 12 states have call predecessors, (36), 10 states have call successors, (36) Word has length 124 [2021-12-16 03:15:54,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:15:54,160 INFO L225 Difference]: With dead ends: 455 [2021-12-16 03:15:54,161 INFO L226 Difference]: Without dead ends: 349 [2021-12-16 03:15:54,161 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 249 SyntacticMatches, 14 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 200 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=120, Invalid=872, Unknown=0, NotChecked=0, Total=992 [2021-12-16 03:15:54,162 INFO L933 BasicCegarLoop]: 229 mSDtfsCounter, 186 mSDsluCounter, 1738 mSDsCounter, 0 mSdLazyCounter, 1547 mSolverCounterSat, 192 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 1967 SdHoareTripleChecker+Invalid, 2034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 192 IncrementalHoareTripleChecker+Valid, 1547 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 295 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-16 03:15:54,162 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [215 Valid, 1967 Invalid, 2034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [192 Valid, 1547 Invalid, 0 Unknown, 295 Unchecked, 1.4s Time] [2021-12-16 03:15:54,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 349 states. [2021-12-16 03:15:54,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 349 to 263. [2021-12-16 03:15:54,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 181 states have (on average 1.12707182320442) internal successors, (204), 184 states have internal predecessors, (204), 58 states have call successors, (58), 21 states have call predecessors, (58), 23 states have return successors, (72), 57 states have call predecessors, (72), 57 states have call successors, (72) [2021-12-16 03:15:54,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 334 transitions. [2021-12-16 03:15:54,180 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 334 transitions. Word has length 124 [2021-12-16 03:15:54,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:15:54,182 INFO L470 AbstractCegarLoop]: Abstraction has 263 states and 334 transitions. [2021-12-16 03:15:54,183 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 19 states have (on average 7.315789473684211) internal successors, (139), 15 states have internal predecessors, (139), 10 states have call successors, (37), 5 states have call predecessors, (37), 5 states have return successors, (36), 12 states have call predecessors, (36), 10 states have call successors, (36) [2021-12-16 03:15:54,183 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 334 transitions. [2021-12-16 03:15:54,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2021-12-16 03:15:54,184 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:15:54,185 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:15:54,210 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-16 03:15:54,399 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 [2021-12-16 03:15:54,399 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:15:54,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:15:54,400 INFO L85 PathProgramCache]: Analyzing trace with hash -1308135966, now seen corresponding path program 1 times [2021-12-16 03:15:54,400 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:15:54,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930107476] [2021-12-16 03:15:54,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:15:54,400 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:15:54,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:54,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:15:54,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:54,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:15:54,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:54,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 03:15:54,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:54,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:15:54,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:54,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 03:15:54,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:54,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:15:54,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:54,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 03:15:54,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:54,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:15:54,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:54,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 03:15:54,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:54,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-16 03:15:54,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:54,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-16 03:15:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:54,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-16 03:15:54,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:54,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-16 03:15:54,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:54,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-16 03:15:54,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:54,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-16 03:15:54,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:54,753 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-12-16 03:15:54,753 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:15:54,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930107476] [2021-12-16 03:15:54,754 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [930107476] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:15:54,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428935711] [2021-12-16 03:15:54,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:15:54,755 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:15:54,755 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:15:54,756 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) [2021-12-16 03:15:54,757 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-16 03:15:55,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:55,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 2777 conjuncts, 82 conjunts are in the unsatisfiable core [2021-12-16 03:15:55,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:15:55,355 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 [2021-12-16 03:15:55,360 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 [2021-12-16 03:15:56,138 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:15:56,139 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 24 treesize of output 23 [2021-12-16 03:15:56,159 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-16 03:15:56,160 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 [2021-12-16 03:15:56,170 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 [2021-12-16 03:15:56,357 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-16 03:15:56,357 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 21 treesize of output 27 [2021-12-16 03:15:56,363 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:15:56,364 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 24 treesize of output 23 [2021-12-16 03:15:57,083 INFO L134 CoverageAnalysis]: Checked inductivity of 129 backedges. 69 proven. 37 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-16 03:15:57,084 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:15:57,623 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_1202 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_save_byte_from_array_~storage#1.base| v_ArrVal_1202) |c_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.offset| 8)) 0))) (forall ((v_ArrVal_1200 Int)) (not (= 0 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_save_byte_from_array_~storage#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_save_byte_from_array_~storage#1.base|) (+ |c_ULTIMATE.start_save_byte_from_array_~storage#1.offset| 8) v_ArrVal_1200)) |c_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.offset| 16)) 18446744073709551616))))) is different from false [2021-12-16 03:15:57,637 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428935711] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:15:57,637 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 03:15:57,637 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 26] total 32 [2021-12-16 03:15:57,637 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461043558] [2021-12-16 03:15:57,638 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 03:15:57,638 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-16 03:15:57,638 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:15:57,639 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-16 03:15:57,639 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=1406, Unknown=1, NotChecked=76, Total=1640 [2021-12-16 03:15:57,640 INFO L87 Difference]: Start difference. First operand 263 states and 334 transitions. Second operand has 32 states, 30 states have (on average 4.566666666666666) internal successors, (137), 28 states have internal predecessors, (137), 10 states have call successors, (29), 7 states have call predecessors, (29), 8 states have return successors, (28), 9 states have call predecessors, (28), 10 states have call successors, (28) [2021-12-16 03:15:58,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:15:58,775 INFO L93 Difference]: Finished difference Result 521 states and 632 transitions. [2021-12-16 03:15:58,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-12-16 03:15:58,776 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 4.566666666666666) internal successors, (137), 28 states have internal predecessors, (137), 10 states have call successors, (29), 7 states have call predecessors, (29), 8 states have return successors, (28), 9 states have call predecessors, (28), 10 states have call successors, (28) Word has length 132 [2021-12-16 03:15:58,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:15:58,778 INFO L225 Difference]: With dead ends: 521 [2021-12-16 03:15:58,778 INFO L226 Difference]: Without dead ends: 330 [2021-12-16 03:15:58,780 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 179 SyntacticMatches, 11 SemanticMatches, 55 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1020 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=267, Invalid=2816, Unknown=1, NotChecked=108, Total=3192 [2021-12-16 03:15:58,780 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 195 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 712 mSolverCounterSat, 132 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 1424 SdHoareTripleChecker+Invalid, 1694 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 132 IncrementalHoareTripleChecker+Valid, 712 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 850 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-16 03:15:58,781 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 1424 Invalid, 1694 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [132 Valid, 712 Invalid, 0 Unknown, 850 Unchecked, 0.7s Time] [2021-12-16 03:15:58,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2021-12-16 03:15:58,792 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 302. [2021-12-16 03:15:58,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 302 states, 213 states have (on average 1.1173708920187793) internal successors, (238), 216 states have internal predecessors, (238), 59 states have call successors, (59), 27 states have call predecessors, (59), 29 states have return successors, (70), 58 states have call predecessors, (70), 58 states have call successors, (70) [2021-12-16 03:15:58,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 367 transitions. [2021-12-16 03:15:58,794 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 367 transitions. Word has length 132 [2021-12-16 03:15:58,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:15:58,795 INFO L470 AbstractCegarLoop]: Abstraction has 302 states and 367 transitions. [2021-12-16 03:15:58,795 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 4.566666666666666) internal successors, (137), 28 states have internal predecessors, (137), 10 states have call successors, (29), 7 states have call predecessors, (29), 8 states have return successors, (28), 9 states have call predecessors, (28), 10 states have call successors, (28) [2021-12-16 03:15:58,795 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 367 transitions. [2021-12-16 03:15:58,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2021-12-16 03:15:58,797 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:15:58,797 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:15:58,829 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-16 03:15:59,011 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 [2021-12-16 03:15:59,011 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:15:59,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:15:59,012 INFO L85 PathProgramCache]: Analyzing trace with hash 1864735627, now seen corresponding path program 1 times [2021-12-16 03:15:59,012 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:15:59,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1783742082] [2021-12-16 03:15:59,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:15:59,012 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:15:59,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:59,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:15:59,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:59,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:15:59,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:59,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 03:15:59,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:59,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:15:59,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:59,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 03:15:59,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:59,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:15:59,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:59,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 03:15:59,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:59,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:15:59,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:59,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 03:15:59,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:59,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-16 03:15:59,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:59,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-16 03:15:59,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:59,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-16 03:15:59,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:59,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-16 03:15:59,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:59,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-16 03:15:59,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:59,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2021-12-16 03:15:59,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:59,429 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 134 trivial. 0 not checked. [2021-12-16 03:15:59,429 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:15:59,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1783742082] [2021-12-16 03:15:59,430 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1783742082] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:15:59,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [596249059] [2021-12-16 03:15:59,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:15:59,431 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:15:59,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:15:59,436 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) [2021-12-16 03:15:59,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-16 03:15:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:15:59,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 2798 conjuncts, 22 conjunts are in the unsatisfiable core [2021-12-16 03:15:59,893 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:16:00,085 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2021-12-16 03:16:00,086 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:16:00,086 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [596249059] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:16:00,086 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:16:00,086 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 14 [2021-12-16 03:16:00,086 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1198628980] [2021-12-16 03:16:00,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:16:00,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 03:16:00,087 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:16:00,088 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 03:16:00,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2021-12-16 03:16:00,088 INFO L87 Difference]: Start difference. First operand 302 states and 367 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 03:16:00,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:16:00,152 INFO L93 Difference]: Finished difference Result 482 states and 585 transitions. [2021-12-16 03:16:00,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:16:00,152 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 137 [2021-12-16 03:16:00,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:16:00,154 INFO L225 Difference]: With dead ends: 482 [2021-12-16 03:16:00,154 INFO L226 Difference]: Without dead ends: 293 [2021-12-16 03:16:00,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2021-12-16 03:16:00,157 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 10 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1316 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-16 03:16:00,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 1316 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:16:00,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2021-12-16 03:16:00,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2021-12-16 03:16:00,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 204 states have (on average 1.0931372549019607) internal successors, (223), 207 states have internal predecessors, (223), 59 states have call successors, (59), 27 states have call predecessors, (59), 29 states have return successors, (68), 58 states have call predecessors, (68), 58 states have call successors, (68) [2021-12-16 03:16:00,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 350 transitions. [2021-12-16 03:16:00,174 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 350 transitions. Word has length 137 [2021-12-16 03:16:00,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:16:00,174 INFO L470 AbstractCegarLoop]: Abstraction has 293 states and 350 transitions. [2021-12-16 03:16:00,174 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 6 states have internal predecessors, (77), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 03:16:00,174 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 350 transitions. [2021-12-16 03:16:00,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-16 03:16:00,176 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:16:00,176 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:16:00,205 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-16 03:16:00,389 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 [2021-12-16 03:16:00,390 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:16:00,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:16:00,390 INFO L85 PathProgramCache]: Analyzing trace with hash 402898752, now seen corresponding path program 2 times [2021-12-16 03:16:00,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:16:00,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877528351] [2021-12-16 03:16:00,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:16:00,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:16:00,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:00,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:16:00,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:00,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:16:00,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:00,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 03:16:00,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:00,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:16:00,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:00,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 03:16:00,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:00,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:16:00,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:00,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 03:16:00,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:00,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:16:00,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:00,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 03:16:00,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:00,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-16 03:16:00,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:00,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-16 03:16:00,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:00,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-16 03:16:00,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:00,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-16 03:16:00,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:00,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-16 03:16:00,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:00,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-16 03:16:00,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:00,754 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-16 03:16:00,755 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:16:00,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877528351] [2021-12-16 03:16:00,755 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877528351] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:16:00,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [125642185] [2021-12-16 03:16:00,755 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 03:16:00,755 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:16:00,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:16:00,757 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) [2021-12-16 03:16:00,758 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-16 03:16:01,729 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 03:16:01,729 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:16:01,740 INFO L263 TraceCheckSpWp]: Trace formula consists of 2800 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-16 03:16:01,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:16:02,119 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 [2021-12-16 03:16:02,235 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 101 proven. 0 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-16 03:16:02,235 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:16:02,235 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [125642185] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:16:02,235 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:16:02,235 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2021-12-16 03:16:02,235 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1246684127] [2021-12-16 03:16:02,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:16:02,236 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 03:16:02,236 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:16:02,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 03:16:02,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2021-12-16 03:16:02,237 INFO L87 Difference]: Start difference. First operand 293 states and 350 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2021-12-16 03:16:02,723 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:16:02,723 INFO L93 Difference]: Finished difference Result 538 states and 672 transitions. [2021-12-16 03:16:02,724 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 03:16:02,724 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 139 [2021-12-16 03:16:02,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:16:02,726 INFO L225 Difference]: With dead ends: 538 [2021-12-16 03:16:02,726 INFO L226 Difference]: Without dead ends: 353 [2021-12-16 03:16:02,727 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 156 SyntacticMatches, 5 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2021-12-16 03:16:02,727 INFO L933 BasicCegarLoop]: 260 mSDtfsCounter, 118 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 333 mSolverCounterSat, 59 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 1546 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 59 IncrementalHoareTripleChecker+Valid, 333 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 79 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 03:16:02,728 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [151 Valid, 1546 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [59 Valid, 333 Invalid, 0 Unknown, 79 Unchecked, 0.4s Time] [2021-12-16 03:16:02,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 353 states. [2021-12-16 03:16:02,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 353 to 299. [2021-12-16 03:16:02,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 299 states, 209 states have (on average 1.0861244019138756) internal successors, (227), 213 states have internal predecessors, (227), 59 states have call successors, (59), 27 states have call predecessors, (59), 30 states have return successors, (74), 58 states have call predecessors, (74), 58 states have call successors, (74) [2021-12-16 03:16:02,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 299 states to 299 states and 360 transitions. [2021-12-16 03:16:02,744 INFO L78 Accepts]: Start accepts. Automaton has 299 states and 360 transitions. Word has length 139 [2021-12-16 03:16:02,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:16:02,746 INFO L470 AbstractCegarLoop]: Abstraction has 299 states and 360 transitions. [2021-12-16 03:16:02,746 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 9 states have internal predecessors, (84), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2021-12-16 03:16:02,746 INFO L276 IsEmpty]: Start isEmpty. Operand 299 states and 360 transitions. [2021-12-16 03:16:02,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2021-12-16 03:16:02,748 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:16:02,748 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:16:02,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-16 03:16:02,951 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 [2021-12-16 03:16:02,951 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:16:02,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:16:02,952 INFO L85 PathProgramCache]: Analyzing trace with hash -904243646, now seen corresponding path program 1 times [2021-12-16 03:16:02,952 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:16:02,952 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732288335] [2021-12-16 03:16:02,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:16:02,952 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:16:03,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:03,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:16:03,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:03,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:16:03,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:03,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 03:16:03,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:03,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:16:03,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:03,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 03:16:03,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:03,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:16:03,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:03,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 03:16:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:03,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:16:03,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:03,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2021-12-16 03:16:03,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:03,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-16 03:16:03,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:03,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-16 03:16:03,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:03,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2021-12-16 03:16:03,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:03,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-16 03:16:03,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:03,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-16 03:16:03,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:03,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-16 03:16:03,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:03,351 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-16 03:16:03,352 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:16:03,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732288335] [2021-12-16 03:16:03,352 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732288335] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:16:03,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282302089] [2021-12-16 03:16:03,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:16:03,353 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:16:03,353 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:16:03,354 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) [2021-12-16 03:16:03,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-16 03:16:03,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:03,864 INFO L263 TraceCheckSpWp]: Trace formula consists of 2805 conjuncts, 70 conjunts are in the unsatisfiable core [2021-12-16 03:16:03,868 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:16:03,876 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 [2021-12-16 03:16:04,066 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-16 03:16:04,067 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2021-12-16 03:16:04,093 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 [2021-12-16 03:16:04,457 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 5 treesize of output 3 [2021-12-16 03:16:10,664 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-16 03:16:10,664 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2021-12-16 03:16:10,795 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-16 03:16:10,795 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 [2021-12-16 03:16:10,835 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 17 treesize of output 19 [2021-12-16 03:16:12,942 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 17 treesize of output 19 [2021-12-16 03:16:19,472 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 59 proven. 53 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-16 03:16:19,473 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:16:19,756 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1724 (Array Int Int))) (not (= 0 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_save_byte_from_array_~storage#1.base| v_ArrVal_1724) |c_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base|) |c_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.offset|) 18446744073709551616)))) is different from false [2021-12-16 03:16:19,761 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282302089] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:16:19,761 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 03:16:19,761 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 21] total 28 [2021-12-16 03:16:19,761 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [99049544] [2021-12-16 03:16:19,761 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 03:16:19,762 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-12-16 03:16:19,762 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:16:19,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-12-16 03:16:19,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=107, Invalid=950, Unknown=3, NotChecked=62, Total=1122 [2021-12-16 03:16:19,763 INFO L87 Difference]: Start difference. First operand 299 states and 360 transitions. Second operand has 28 states, 27 states have (on average 5.518518518518518) internal successors, (149), 26 states have internal predecessors, (149), 9 states have call successors, (30), 9 states have call predecessors, (30), 10 states have return successors, (29), 9 states have call predecessors, (29), 9 states have call successors, (29)