./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_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_write_be64_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 e695a989d07c92d21e9a41b59ca742c73a2098242f3cafca723523a39a7793cb --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-16 03:15:55,525 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-16 03:15:55,528 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-16 03:15:55,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-16 03:15:55,561 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-16 03:15:55,565 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-16 03:15:55,566 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-16 03:15:55,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-16 03:15:55,574 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-16 03:15:55,578 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-16 03:15:55,579 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-16 03:15:55,580 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-16 03:15:55,580 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-16 03:15:55,583 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-16 03:15:55,584 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-16 03:15:55,588 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-16 03:15:55,589 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-16 03:15:55,590 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-16 03:15:55,592 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-16 03:15:55,595 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-16 03:15:55,598 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-16 03:15:55,600 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-16 03:15:55,601 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-16 03:15:55,602 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-16 03:15:55,605 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-16 03:15:55,606 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-16 03:15:55,606 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-16 03:15:55,607 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-16 03:15:55,608 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-16 03:15:55,608 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-16 03:15:55,609 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-16 03:15:55,610 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-16 03:15:55,611 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-16 03:15:55,612 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-16 03:15:55,613 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-16 03:15:55,613 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-16 03:15:55,614 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-16 03:15:55,614 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-16 03:15:55,614 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-16 03:15:55,615 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-16 03:15:55,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-16 03:15:55,616 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-16 03:15:55,649 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-16 03:15:55,651 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-16 03:15:55,652 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-16 03:15:55,652 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-16 03:15:55,653 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-16 03:15:55,653 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-16 03:15:55,653 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-16 03:15:55,654 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-16 03:15:55,654 INFO L138 SettingsManager]: * Use SBE=true [2021-12-16 03:15:55,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-16 03:15:55,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-16 03:15:55,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-16 03:15:55,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-16 03:15:55,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-16 03:15:55,656 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-16 03:15:55,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-16 03:15:55,656 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-16 03:15:55,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-16 03:15:55,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-16 03:15:55,657 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-16 03:15:55,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-16 03:15:55,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:15:55,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-16 03:15:55,657 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-16 03:15:55,658 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-16 03:15:55,658 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-16 03:15:55,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-16 03:15:55,659 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-16 03:15:55,659 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-16 03:15:55,659 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-16 03:15:55,660 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-16 03:15:55,660 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e695a989d07c92d21e9a41b59ca742c73a2098242f3cafca723523a39a7793cb [2021-12-16 03:15:55,867 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-16 03:15:55,892 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-16 03:15:55,895 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-16 03:15:55,896 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-16 03:15:55,897 INFO L275 PluginConnector]: CDTParser initialized [2021-12-16 03:15:55,898 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_harness.i [2021-12-16 03:15:55,966 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b072c2ae4/28ec326f5dab431aa1d03585cb19fd0b/FLAG200a8bb78 [2021-12-16 03:15:56,676 INFO L306 CDTParser]: Found 1 translation units. [2021-12-16 03:15:56,677 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_harness.i [2021-12-16 03:15:56,714 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b072c2ae4/28ec326f5dab431aa1d03585cb19fd0b/FLAG200a8bb78 [2021-12-16 03:15:56,926 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b072c2ae4/28ec326f5dab431aa1d03585cb19fd0b [2021-12-16 03:15:56,928 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-16 03:15:56,930 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-16 03:15:56,933 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-16 03:15:56,933 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-16 03:15:56,936 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-16 03:15:56,937 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:15:56" (1/1) ... [2021-12-16 03:15:56,937 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ef1c586 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:15:56, skipping insertion in model container [2021-12-16 03:15:56,938 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.12 03:15:56" (1/1) ... [2021-12-16 03:15:56,943 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-16 03:15:57,026 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-16 03:15:57,278 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_harness.i[4497,4510] [2021-12-16 03:15:57,287 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_harness.i[4557,4570] [2021-12-16 03:15:58,059 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:15:58,060 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:15:58,060 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:15:58,061 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:15:58,062 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:15:58,074 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:15:58,075 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:15:58,077 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:15:58,078 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:15:58,401 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-16 03:15:58,403 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-16 03:15:58,403 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-16 03:15:58,405 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-16 03:15:58,409 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-16 03:15:58,414 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-16 03:15:58,415 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-16 03:15:58,416 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-16 03:15:58,419 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-16 03:15:58,421 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-16 03:15:58,581 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-16 03:15:58,690 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:15:58,691 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:15:58,771 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:15:58,823 INFO L203 MainTranslator]: Completed pre-run [2021-12-16 03:15:58,839 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_harness.i[4497,4510] [2021-12-16 03:15:58,840 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_harness.i[4557,4570] [2021-12-16 03:15:58,871 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:15:58,872 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:15:58,872 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:15:58,873 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:15:58,873 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:15:58,885 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:15:58,889 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:15:58,891 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:15:58,891 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:15:58,927 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-16 03:15:58,928 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-16 03:15:58,929 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-16 03:15:58,929 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-16 03:15:58,932 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-16 03:15:58,933 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-16 03:15:58,933 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-16 03:15:58,933 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-16 03:15:58,934 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-16 03:15:58,938 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-16 03:15:58,956 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-16 03:15:59,067 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:15:59,067 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-16 03:15:59,096 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-16 03:15:59,304 INFO L208 MainTranslator]: Completed translation [2021-12-16 03:15:59,305 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:15:59 WrapperNode [2021-12-16 03:15:59,305 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-16 03:15:59,306 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-16 03:15:59,306 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-16 03:15:59,306 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-16 03:15:59,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:15:59" (1/1) ... [2021-12-16 03:15:59,418 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:15:59" (1/1) ... [2021-12-16 03:15:59,512 INFO L137 Inliner]: procedures = 691, calls = 2619, calls flagged for inlining = 62, calls inlined = 9, statements flattened = 861 [2021-12-16 03:15:59,512 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-16 03:15:59,513 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-16 03:15:59,514 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-16 03:15:59,514 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-16 03:15:59,522 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:15:59" (1/1) ... [2021-12-16 03:15:59,522 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:15:59" (1/1) ... [2021-12-16 03:15:59,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:15:59" (1/1) ... [2021-12-16 03:15:59,539 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:15:59" (1/1) ... [2021-12-16 03:15:59,590 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:15:59" (1/1) ... [2021-12-16 03:15:59,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:15:59" (1/1) ... [2021-12-16 03:15:59,606 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:15:59" (1/1) ... [2021-12-16 03:15:59,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-16 03:15:59,621 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-16 03:15:59,621 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-16 03:15:59,621 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-16 03:15:59,622 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:15:59" (1/1) ... [2021-12-16 03:15:59,629 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-16 03:15:59,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:15:59,650 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 03:15:59,665 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 03:15:59,699 INFO L130 BoogieDeclarations]: Found specification of procedure htonl [2021-12-16 03:15:59,699 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hton64 [2021-12-16 03:15:59,699 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hton64 [2021-12-16 03:15:59,700 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-12-16 03:15:59,700 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-12-16 03:15:59,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-16 03:15:59,700 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-16 03:15:59,701 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-16 03:15:59,701 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-16 03:15:59,701 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-16 03:15:59,702 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-16 03:15:59,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-16 03:15:59,703 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-16 03:15:59,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-16 03:15:59,703 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-12-16 03:15:59,704 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-12-16 03:15:59,704 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-16 03:15:59,704 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-16 03:15:59,704 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-16 03:15:59,704 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-16 03:15:59,704 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-12-16 03:15:59,705 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-12-16 03:15:59,705 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-16 03:15:59,705 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-16 03:15:59,705 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-12-16 03:15:59,705 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-12-16 03:15:59,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-16 03:15:59,706 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-16 03:15:59,706 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2021-12-16 03:15:59,707 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2021-12-16 03:15:59,707 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-16 03:15:59,707 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-16 03:15:59,707 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-16 03:15:59,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-16 03:15:59,708 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_big_endian [2021-12-16 03:15:59,708 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_big_endian [2021-12-16 03:15:59,708 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-16 03:16:00,023 INFO L236 CfgBuilder]: Building ICFG [2021-12-16 03:16:00,024 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-16 03:16:00,669 INFO L277 CfgBuilder]: Performing block encoding [2021-12-16 03:16:00,676 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-16 03:16:00,676 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-16 03:16:00,679 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:16:00 BoogieIcfgContainer [2021-12-16 03:16:00,679 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-16 03:16:00,681 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-16 03:16:00,681 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-16 03:16:00,685 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-16 03:16:00,685 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.12 03:15:56" (1/3) ... [2021-12-16 03:16:00,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fdf8dea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:16:00, skipping insertion in model container [2021-12-16 03:16:00,686 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.12 03:15:59" (2/3) ... [2021-12-16 03:16:00,686 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@fdf8dea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.12 03:16:00, skipping insertion in model container [2021-12-16 03:16:00,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.12 03:16:00" (3/3) ... [2021-12-16 03:16:00,688 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_be64_harness.i [2021-12-16 03:16:00,693 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-16 03:16:00,694 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-16 03:16:00,740 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-16 03:16:00,746 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 03:16:00,746 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-16 03:16:00,766 INFO L276 IsEmpty]: Start isEmpty. Operand has 142 states, 92 states have (on average 1.2282608695652173) internal successors, (113), 93 states have internal predecessors, (113), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) [2021-12-16 03:16:00,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-16 03:16:00,775 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:16:00,775 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:16:00,776 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:16:00,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:16:00,791 INFO L85 PathProgramCache]: Analyzing trace with hash -598164550, now seen corresponding path program 1 times [2021-12-16 03:16:00,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:16:00,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549518357] [2021-12-16 03:16:00,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:16:00,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:16:01,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:01,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:16:01,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:01,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:16:01,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:01,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 03:16:01,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:01,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:16:01,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:01,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 03:16:01,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:01,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 03:16:01,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:01,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-16 03:16:01,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:01,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-16 03:16:01,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:01,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-16 03:16:01,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:01,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:16:01,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:01,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-16 03:16:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:01,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-16 03:16:01,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:01,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 03:16:01,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:01,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-16 03:16:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:01,530 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-12-16 03:16:01,531 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:16:01,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549518357] [2021-12-16 03:16:01,531 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549518357] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:16:01,532 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:16:01,532 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-16 03:16:01,533 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579128223] [2021-12-16 03:16:01,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:16:01,538 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-16 03:16:01,538 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:16:01,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-16 03:16:01,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-16 03:16:01,564 INFO L87 Difference]: Start difference. First operand has 142 states, 92 states have (on average 1.2282608695652173) internal successors, (113), 93 states have internal predecessors, (113), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (36), 36 states have call predecessors, (36), 36 states have call successors, (36) Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 03:16:01,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:16:01,843 INFO L93 Difference]: Finished difference Result 280 states and 391 transitions. [2021-12-16 03:16:01,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-16 03:16:01,846 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 96 [2021-12-16 03:16:01,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:16:01,857 INFO L225 Difference]: With dead ends: 280 [2021-12-16 03:16:01,857 INFO L226 Difference]: Without dead ends: 137 [2021-12-16 03:16:01,865 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 36 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 03:16:01,871 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 63 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 03:16:01,873 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 207 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 03:16:01,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-12-16 03:16:01,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2021-12-16 03:16:01,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 88 states have (on average 1.2045454545454546) internal successors, (106), 89 states have internal predecessors, (106), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-12-16 03:16:01,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 177 transitions. [2021-12-16 03:16:01,931 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 177 transitions. Word has length 96 [2021-12-16 03:16:01,931 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:16:01,931 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 177 transitions. [2021-12-16 03:16:01,932 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 2 states have internal predecessors, (39), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 03:16:01,932 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 177 transitions. [2021-12-16 03:16:01,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-16 03:16:01,935 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:16:01,935 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:16:01,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-16 03:16:01,936 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:16:01,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:16:01,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1705408322, now seen corresponding path program 1 times [2021-12-16 03:16:01,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:16:01,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1653872056] [2021-12-16 03:16:01,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:16:01,937 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:16:02,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:02,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:16:02,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:02,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:16:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:02,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 03:16:02,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:02,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:16:02,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:02,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 03:16:02,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:02,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-16 03:16:02,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:02,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-16 03:16:02,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:02,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-16 03:16:02,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:02,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-16 03:16:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:02,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:16:02,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:02,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-16 03:16:02,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:02,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-16 03:16:02,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:02,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 03:16:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:02,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-16 03:16:02,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:02,279 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-12-16 03:16:02,279 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:16:02,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1653872056] [2021-12-16 03:16:02,279 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1653872056] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:16:02,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2088801139] [2021-12-16 03:16:02,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:16:02,280 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:16:02,280 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:16:02,283 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 03:16:02,290 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 03:16:02,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:02,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 2654 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-16 03:16:02,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:16:03,158 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-16 03:16:03,158 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:16:03,158 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2088801139] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:16:03,158 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:16:03,159 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2021-12-16 03:16:03,159 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496881823] [2021-12-16 03:16:03,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:16:03,160 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-16 03:16:03,160 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:16:03,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-16 03:16:03,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-16 03:16:03,161 INFO L87 Difference]: Start difference. First operand 137 states and 177 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 03:16:03,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:16:03,345 INFO L93 Difference]: Finished difference Result 252 states and 333 transitions. [2021-12-16 03:16:03,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-16 03:16:03,346 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 96 [2021-12-16 03:16:03,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:16:03,348 INFO L225 Difference]: With dead ends: 252 [2021-12-16 03:16:03,349 INFO L226 Difference]: Without dead ends: 140 [2021-12-16 03:16:03,349 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-12-16 03:16:03,350 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 205 mSDsluCounter, 249 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:16:03,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [208 Valid, 391 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:16:03,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-12-16 03:16:03,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2021-12-16 03:16:03,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 90 states have (on average 1.2) internal successors, (108), 92 states have internal predecessors, (108), 36 states have call successors, (36), 12 states have call predecessors, (36), 13 states have return successors, (39), 35 states have call predecessors, (39), 35 states have call successors, (39) [2021-12-16 03:16:03,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 183 transitions. [2021-12-16 03:16:03,364 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 183 transitions. Word has length 96 [2021-12-16 03:16:03,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:16:03,365 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 183 transitions. [2021-12-16 03:16:03,365 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 03:16:03,365 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 183 transitions. [2021-12-16 03:16:03,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-16 03:16:03,368 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:16:03,368 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:16:03,402 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 03:16:03,595 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 03:16:03,596 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:16:03,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:16:03,596 INFO L85 PathProgramCache]: Analyzing trace with hash 870874419, now seen corresponding path program 1 times [2021-12-16 03:16:03,596 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:16:03,597 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [850033801] [2021-12-16 03:16:03,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:16:03,597 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:16:03,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:03,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:16:03,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:03,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:16:03,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:03,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 03:16:03,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:03,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:16:03,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:03,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 03:16:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:03,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 03:16:03,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:03,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-16 03:16:03,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:03,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-16 03:16:03,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:03,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-16 03:16:03,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:04,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:16:04,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:04,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-16 03:16:04,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:04,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 03:16:04,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:04,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-16 03:16:04,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:04,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-16 03:16:04,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:04,042 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-12-16 03:16:04,042 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:16:04,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [850033801] [2021-12-16 03:16:04,043 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [850033801] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:16:04,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1245177225] [2021-12-16 03:16:04,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:16:04,043 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:16:04,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:16:04,045 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 03:16:04,046 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 03:16:04,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:04,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 2671 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 03:16:04,522 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:16:04,832 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-16 03:16:04,833 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:16:04,833 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1245177225] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:16:04,833 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:16:04,833 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2021-12-16 03:16:04,833 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431592865] [2021-12-16 03:16:04,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:16:04,834 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-16 03:16:04,834 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:16:04,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-16 03:16:04,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-12-16 03:16:04,835 INFO L87 Difference]: Start difference. First operand 140 states and 183 transitions. Second operand has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-16 03:16:05,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:16:05,110 INFO L93 Difference]: Finished difference Result 247 states and 324 transitions. [2021-12-16 03:16:05,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-16 03:16:05,111 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 102 [2021-12-16 03:16:05,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:16:05,113 INFO L225 Difference]: With dead ends: 247 [2021-12-16 03:16:05,113 INFO L226 Difference]: Without dead ends: 140 [2021-12-16 03:16:05,114 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 142 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2021-12-16 03:16:05,115 INFO L933 BasicCegarLoop]: 142 mSDtfsCounter, 222 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 225 SdHoareTripleChecker+Valid, 636 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 03:16:05,115 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 636 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 03:16:05,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-12-16 03:16:05,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2021-12-16 03:16:05,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 90 states have (on average 1.2) internal successors, (108), 92 states have internal predecessors, (108), 36 states have call successors, (36), 12 states have call predecessors, (36), 13 states have return successors, (38), 35 states have call predecessors, (38), 35 states have call successors, (38) [2021-12-16 03:16:05,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 182 transitions. [2021-12-16 03:16:05,130 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 182 transitions. Word has length 102 [2021-12-16 03:16:05,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:16:05,131 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 182 transitions. [2021-12-16 03:16:05,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 9.333333333333334) internal successors, (56), 7 states have internal predecessors, (56), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-16 03:16:05,132 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 182 transitions. [2021-12-16 03:16:05,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-16 03:16:05,140 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:16:05,141 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 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 03:16:05,173 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 03:16:05,342 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 03:16:05,342 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:16:05,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:16:05,343 INFO L85 PathProgramCache]: Analyzing trace with hash 1336541160, now seen corresponding path program 2 times [2021-12-16 03:16:05,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:16:05,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [878678444] [2021-12-16 03:16:05,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:16:05,343 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:16:05,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:05,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:16:05,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:05,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:16:05,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:05,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 03:16:05,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:05,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:16:05,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:05,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 03:16:05,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:05,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 03:16:05,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:05,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-16 03:16:05,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:05,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-16 03:16:05,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:05,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 03:16:05,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:05,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:16:05,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:05,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 03:16:05,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:05,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-16 03:16:05,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:05,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 03:16:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:05,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-16 03:16:05,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:05,727 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-12-16 03:16:05,728 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:16:05,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [878678444] [2021-12-16 03:16:05,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [878678444] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:16:05,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [767517576] [2021-12-16 03:16:05,729 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 03:16:05,729 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:16:05,729 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:16:05,732 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 03:16:05,755 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 03:16:06,529 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 03:16:06,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:16:06,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 2688 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-16 03:16:06,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:16:06,797 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-16 03:16:06,797 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:16:06,797 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [767517576] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:16:06,798 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:16:06,798 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 12 [2021-12-16 03:16:06,798 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996433436] [2021-12-16 03:16:06,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:16:06,802 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-16 03:16:06,802 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:16:06,802 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-16 03:16:06,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-16 03:16:06,803 INFO L87 Difference]: Start difference. First operand 140 states and 182 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-16 03:16:06,952 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:16:06,952 INFO L93 Difference]: Finished difference Result 231 states and 303 transitions. [2021-12-16 03:16:06,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-16 03:16:06,953 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 108 [2021-12-16 03:16:06,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:16:06,958 INFO L225 Difference]: With dead ends: 231 [2021-12-16 03:16:06,958 INFO L226 Difference]: Without dead ends: 137 [2021-12-16 03:16:06,959 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2021-12-16 03:16:06,962 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 80 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 999 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:16:06,963 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [82 Valid, 999 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:16:06,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-12-16 03:16:06,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2021-12-16 03:16:06,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 88 states have (on average 1.1931818181818181) internal successors, (105), 89 states have internal predecessors, (105), 36 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2021-12-16 03:16:06,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 176 transitions. [2021-12-16 03:16:06,992 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 176 transitions. Word has length 108 [2021-12-16 03:16:06,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:16:06,994 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 176 transitions. [2021-12-16 03:16:06,994 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 7 states have internal predecessors, (50), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2021-12-16 03:16:06,994 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 176 transitions. [2021-12-16 03:16:06,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-16 03:16:06,997 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:16:06,997 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:16:07,030 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 03:16:07,211 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 03:16:07,212 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:16:07,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:16:07,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1211043646, now seen corresponding path program 1 times [2021-12-16 03:16:07,212 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:16:07,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109196219] [2021-12-16 03:16:07,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:16:07,212 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:16:07,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:07,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:16:07,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:07,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:16:07,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:07,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 03:16:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:07,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:16:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:07,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 03:16:07,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:07,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 03:16:07,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:07,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-16 03:16:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:07,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-16 03:16:07,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:07,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 03:16:07,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:07,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:16:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:07,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 03:16:07,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:07,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 03:16:07,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:07,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 03:16:07,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:07,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-16 03:16:07,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:07,603 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-12-16 03:16:07,603 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:16:07,603 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109196219] [2021-12-16 03:16:07,604 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109196219] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:16:07,604 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:16:07,604 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-16 03:16:07,604 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515221477] [2021-12-16 03:16:07,604 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:16:07,606 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 03:16:07,606 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:16:07,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 03:16:07,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-16 03:16:07,607 INFO L87 Difference]: Start difference. First operand 137 states and 176 transitions. Second operand has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2021-12-16 03:16:08,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:16:08,081 INFO L93 Difference]: Finished difference Result 149 states and 193 transitions. [2021-12-16 03:16:08,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 03:16:08,082 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 120 [2021-12-16 03:16:08,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:16:08,084 INFO L225 Difference]: With dead ends: 149 [2021-12-16 03:16:08,084 INFO L226 Difference]: Without dead ends: 147 [2021-12-16 03:16:08,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2021-12-16 03:16:08,085 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 89 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 106 SdHoareTripleChecker+Valid, 783 SdHoareTripleChecker+Invalid, 540 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 500 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-16 03:16:08,085 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 783 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-16 03:16:08,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-12-16 03:16:08,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 146. [2021-12-16 03:16:08,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 94 states have (on average 1.1808510638297873) internal successors, (111), 96 states have internal predecessors, (111), 37 states have call successors, (37), 13 states have call predecessors, (37), 14 states have return successors, (42), 36 states have call predecessors, (42), 36 states have call successors, (42) [2021-12-16 03:16:08,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 190 transitions. [2021-12-16 03:16:08,095 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 190 transitions. Word has length 120 [2021-12-16 03:16:08,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:16:08,096 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 190 transitions. [2021-12-16 03:16:08,096 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2021-12-16 03:16:08,096 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 190 transitions. [2021-12-16 03:16:08,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-16 03:16:08,097 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:16:08,097 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:16:08,098 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-16 03:16:08,098 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:16:08,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:16:08,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1628651524, now seen corresponding path program 1 times [2021-12-16 03:16:08,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:16:08,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1035187542] [2021-12-16 03:16:08,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:16:08,099 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:16:08,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:08,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:16:08,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:08,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:16:08,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:08,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 03:16:08,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:08,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:16:08,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:08,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 03:16:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:08,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 03:16:08,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:08,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-16 03:16:08,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:08,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-16 03:16:08,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:08,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 03:16:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:08,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:16:08,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:08,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 03:16:08,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:08,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 03:16:08,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:08,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 03:16:08,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:08,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-16 03:16:08,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:08,628 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-12-16 03:16:08,628 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:16:08,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1035187542] [2021-12-16 03:16:08,629 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1035187542] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:16:08,629 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:16:08,629 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-16 03:16:08,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [588382817] [2021-12-16 03:16:08,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:16:08,629 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-16 03:16:08,629 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:16:08,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-16 03:16:08,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-12-16 03:16:08,630 INFO L87 Difference]: Start difference. First operand 146 states and 190 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 10 states have internal predecessors, (59), 4 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 03:16:09,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:16:09,232 INFO L93 Difference]: Finished difference Result 236 states and 320 transitions. [2021-12-16 03:16:09,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-16 03:16:09,232 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 10 states have internal predecessors, (59), 4 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 124 [2021-12-16 03:16:09,233 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:16:09,234 INFO L225 Difference]: With dead ends: 236 [2021-12-16 03:16:09,234 INFO L226 Difference]: Without dead ends: 170 [2021-12-16 03:16:09,235 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2021-12-16 03:16:09,235 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 193 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 199 SdHoareTripleChecker+Valid, 619 SdHoareTripleChecker+Invalid, 563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-16 03:16:09,236 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 619 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-16 03:16:09,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-12-16 03:16:09,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 164. [2021-12-16 03:16:09,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 109 states have (on average 1.201834862385321) internal successors, (131), 114 states have internal predecessors, (131), 38 states have call successors, (38), 13 states have call predecessors, (38), 16 states have return successors, (56), 36 states have call predecessors, (56), 37 states have call successors, (56) [2021-12-16 03:16:09,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 225 transitions. [2021-12-16 03:16:09,251 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 225 transitions. Word has length 124 [2021-12-16 03:16:09,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:16:09,252 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 225 transitions. [2021-12-16 03:16:09,253 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 10 states have internal predecessors, (59), 4 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 03:16:09,253 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 225 transitions. [2021-12-16 03:16:09,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-16 03:16:09,255 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:16:09,255 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:16:09,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-16 03:16:09,256 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:16:09,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:16:09,256 INFO L85 PathProgramCache]: Analyzing trace with hash 348787846, now seen corresponding path program 1 times [2021-12-16 03:16:09,256 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:16:09,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651425355] [2021-12-16 03:16:09,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:16:09,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:16:09,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:09,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:16:09,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:09,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:16:09,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:09,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 03:16:09,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:09,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:16:09,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:09,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 03:16:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:09,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 03:16:09,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:09,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-16 03:16:09,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:09,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-16 03:16:09,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:09,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 03:16:09,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:09,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:16:09,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:09,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 03:16:09,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:09,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 03:16:09,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:09,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 03:16:09,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:09,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-16 03:16:09,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:09,742 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-12-16 03:16:09,742 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:16:09,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651425355] [2021-12-16 03:16:09,742 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651425355] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:16:09,743 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335941664] [2021-12-16 03:16:09,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:16:09,743 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:16:09,743 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:16:09,748 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 03:16:09,749 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 03:16:10,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:10,230 INFO L263 TraceCheckSpWp]: Trace formula consists of 2724 conjuncts, 77 conjunts are in the unsatisfiable core [2021-12-16 03:16:10,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:16:10,372 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 03:16:10,688 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-16 03:16:10,688 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 26 treesize of output 30 [2021-12-16 03:16:10,856 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-12-16 03:16:10,857 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 35 treesize of output 34 [2021-12-16 03:16:11,743 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 63 proven. 26 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-16 03:16:11,745 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:16:12,443 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 40 proven. 10 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-12-16 03:16:12,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [335941664] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-16 03:16:12,443 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-16 03:16:12,443 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 19, 11] total 34 [2021-12-16 03:16:12,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657875154] [2021-12-16 03:16:12,444 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-16 03:16:12,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-12-16 03:16:12,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:16:12,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-12-16 03:16:12,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1011, Unknown=0, NotChecked=0, Total=1122 [2021-12-16 03:16:12,446 INFO L87 Difference]: Start difference. First operand 164 states and 225 transitions. Second operand has 34 states, 31 states have (on average 4.032258064516129) internal successors, (125), 31 states have internal predecessors, (125), 12 states have call successors, (37), 6 states have call predecessors, (37), 5 states have return successors, (30), 9 states have call predecessors, (30), 11 states have call successors, (30) [2021-12-16 03:16:15,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:16:15,818 INFO L93 Difference]: Finished difference Result 461 states and 707 transitions. [2021-12-16 03:16:15,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-12-16 03:16:15,819 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 31 states have (on average 4.032258064516129) internal successors, (125), 31 states have internal predecessors, (125), 12 states have call successors, (37), 6 states have call predecessors, (37), 5 states have return successors, (30), 9 states have call predecessors, (30), 11 states have call successors, (30) Word has length 124 [2021-12-16 03:16:15,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:16:15,823 INFO L225 Difference]: With dead ends: 461 [2021-12-16 03:16:15,825 INFO L226 Difference]: Without dead ends: 337 [2021-12-16 03:16:15,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 250 SyntacticMatches, 13 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=490, Invalid=3670, Unknown=0, NotChecked=0, Total=4160 [2021-12-16 03:16:15,828 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 691 mSDsluCounter, 2166 mSDsCounter, 0 mSdLazyCounter, 2813 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 714 SdHoareTripleChecker+Valid, 2388 SdHoareTripleChecker+Invalid, 3729 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 365 IncrementalHoareTripleChecker+Valid, 2813 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 551 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-16 03:16:15,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [714 Valid, 2388 Invalid, 3729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 2813 Invalid, 0 Unknown, 551 Unchecked, 2.2s Time] [2021-12-16 03:16:15,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-12-16 03:16:15,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 239. [2021-12-16 03:16:15,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 158 states have (on average 1.2151898734177216) internal successors, (192), 165 states have internal predecessors, (192), 60 states have call successors, (60), 16 states have call predecessors, (60), 20 states have return successors, (121), 57 states have call predecessors, (121), 59 states have call successors, (121) [2021-12-16 03:16:15,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 373 transitions. [2021-12-16 03:16:15,869 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 373 transitions. Word has length 124 [2021-12-16 03:16:15,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:16:15,870 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 373 transitions. [2021-12-16 03:16:15,870 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 31 states have (on average 4.032258064516129) internal successors, (125), 31 states have internal predecessors, (125), 12 states have call successors, (37), 6 states have call predecessors, (37), 5 states have return successors, (30), 9 states have call predecessors, (30), 11 states have call successors, (30) [2021-12-16 03:16:15,870 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 373 transitions. [2021-12-16 03:16:15,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-16 03:16:15,873 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:16:15,874 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:16:15,905 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-12-16 03:16:16,094 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:16:16,094 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:16:16,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:16:16,095 INFO L85 PathProgramCache]: Analyzing trace with hash 1847506242, now seen corresponding path program 1 times [2021-12-16 03:16:16,095 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:16:16,095 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350144388] [2021-12-16 03:16:16,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:16:16,095 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:16:16,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:16,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:16:16,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:16,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:16:16,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:16,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 03:16:16,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:16,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:16:16,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:16,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 03:16:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:16,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 03:16:16,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:16,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-16 03:16:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:16,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-16 03:16:16,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:16,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 03:16:16,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:16,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:16:16,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:16,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 03:16:16,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:16,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 03:16:16,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:16,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 03:16:16,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:16,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-16 03:16:16,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:16,571 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-12-16 03:16:16,571 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:16:16,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350144388] [2021-12-16 03:16:16,571 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350144388] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:16:16,572 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-16 03:16:16,572 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-16 03:16:16,572 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974012854] [2021-12-16 03:16:16,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:16:16,573 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:16:16,573 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:16:16,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:16:16,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:16:16,574 INFO L87 Difference]: Start difference. First operand 239 states and 373 transitions. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 03:16:16,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:16:16,833 INFO L93 Difference]: Finished difference Result 424 states and 662 transitions. [2021-12-16 03:16:16,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:16:16,834 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 124 [2021-12-16 03:16:16,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:16:16,836 INFO L225 Difference]: With dead ends: 424 [2021-12-16 03:16:16,836 INFO L226 Difference]: Without dead ends: 239 [2021-12-16 03:16:16,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:16:16,838 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 62 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 76 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 233 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-16 03:16:16,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [76 Valid, 384 Invalid, 233 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 200 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-16 03:16:16,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-12-16 03:16:16,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2021-12-16 03:16:16,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 158 states have (on average 1.2088607594936709) internal successors, (191), 165 states have internal predecessors, (191), 60 states have call successors, (60), 16 states have call predecessors, (60), 20 states have return successors, (121), 57 states have call predecessors, (121), 59 states have call successors, (121) [2021-12-16 03:16:16,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 372 transitions. [2021-12-16 03:16:16,858 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 372 transitions. Word has length 124 [2021-12-16 03:16:16,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:16:16,859 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 372 transitions. [2021-12-16 03:16:16,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 03:16:16,859 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 372 transitions. [2021-12-16 03:16:16,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-16 03:16:16,864 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:16:16,864 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:16:16,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-16 03:16:16,864 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:16:16,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:16:16,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1678291039, now seen corresponding path program 1 times [2021-12-16 03:16:16,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:16:16,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779824557] [2021-12-16 03:16:16,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:16:16,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:16:17,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:17,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:16:17,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:17,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:16:17,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:17,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 03:16:17,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:17,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:16:17,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:17,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 03:16:17,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:17,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 03:16:17,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:17,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-16 03:16:17,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:17,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-16 03:16:17,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:17,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 03:16:17,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:17,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:16:17,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:17,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 03:16:17,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:17,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 03:16:17,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:17,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 03:16:17,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:17,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-16 03:16:17,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:17,698 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 20 proven. 26 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-12-16 03:16:17,698 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:16:17,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779824557] [2021-12-16 03:16:17,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1779824557] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:16:17,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1303893782] [2021-12-16 03:16:17,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:16:17,699 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:16:17,699 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:16:17,708 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 03:16:17,709 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 03:16:18,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:18,144 INFO L263 TraceCheckSpWp]: Trace formula consists of 2737 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-16 03:16:18,148 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:16:18,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 03:16:20,821 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-12-16 03:16:20,821 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:16:20,821 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1303893782] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:16:20,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:16:20,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [18] total 28 [2021-12-16 03:16:20,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29645539] [2021-12-16 03:16:20,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:16:20,822 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-16 03:16:20,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:16:20,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-16 03:16:20,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=683, Unknown=1, NotChecked=0, Total=756 [2021-12-16 03:16:20,824 INFO L87 Difference]: Start difference. First operand 239 states and 372 transitions. Second operand has 12 states, 12 states have (on average 5.25) internal successors, (63), 10 states have internal predecessors, (63), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2021-12-16 03:16:20,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:16:20,948 INFO L93 Difference]: Finished difference Result 472 states and 729 transitions. [2021-12-16 03:16:20,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-16 03:16:20,949 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 10 states have internal predecessors, (63), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 124 [2021-12-16 03:16:20,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:16:20,951 INFO L225 Difference]: With dead ends: 472 [2021-12-16 03:16:20,952 INFO L226 Difference]: Without dead ends: 260 [2021-12-16 03:16:20,953 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 143 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=78, Invalid=733, Unknown=1, NotChecked=0, Total=812 [2021-12-16 03:16:20,954 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 29 mSDsluCounter, 1216 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 1386 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 114 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:16:20,954 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [31 Valid, 1386 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 49 Invalid, 0 Unknown, 114 Unchecked, 0.1s Time] [2021-12-16 03:16:20,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-12-16 03:16:20,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 256. [2021-12-16 03:16:20,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 256 states, 174 states have (on average 1.2183908045977012) internal successors, (212), 181 states have internal predecessors, (212), 60 states have call successors, (60), 17 states have call predecessors, (60), 21 states have return successors, (119), 57 states have call predecessors, (119), 59 states have call successors, (119) [2021-12-16 03:16:20,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 391 transitions. [2021-12-16 03:16:20,972 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 391 transitions. Word has length 124 [2021-12-16 03:16:20,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:16:20,972 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 391 transitions. [2021-12-16 03:16:20,973 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.25) internal successors, (63), 10 states have internal predecessors, (63), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2021-12-16 03:16:20,973 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 391 transitions. [2021-12-16 03:16:20,975 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-16 03:16:20,975 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:16:20,975 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 03:16:21,008 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 03:16:21,199 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:16:21,199 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:16:21,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:16:21,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1706791329, now seen corresponding path program 1 times [2021-12-16 03:16:21,200 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:16:21,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436824215] [2021-12-16 03:16:21,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:16:21,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:16:21,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:21,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:16:21,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:21,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:16:21,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:21,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 03:16:21,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:21,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:16:21,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:21,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 03:16:21,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:21,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-16 03:16:21,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:21,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-16 03:16:21,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:21,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-16 03:16:21,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:21,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 03:16:21,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:21,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:16:21,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:21,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-16 03:16:21,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:21,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-16 03:16:21,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:21,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 03:16:21,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:21,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-16 03:16:21,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:21,424 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-12-16 03:16:21,425 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:16:21,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436824215] [2021-12-16 03:16:21,425 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436824215] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:16:21,425 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583286218] [2021-12-16 03:16:21,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:16:21,425 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:16:21,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:16:21,427 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 03:16:21,428 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 03:16:21,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:21,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 2732 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 03:16:21,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:16:22,104 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-12-16 03:16:22,104 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:16:22,104 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583286218] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:16:22,105 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:16:22,105 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2021-12-16 03:16:22,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653323527] [2021-12-16 03:16:22,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:16:22,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:16:22,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:16:22,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:16:22,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:16:22,109 INFO L87 Difference]: Start difference. First operand 256 states and 391 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 03:16:22,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:16:22,140 INFO L93 Difference]: Finished difference Result 454 states and 708 transitions. [2021-12-16 03:16:22,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:16:22,140 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (16), 2 states have call predecessors, (16), 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 03:16:22,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:16:22,142 INFO L225 Difference]: With dead ends: 454 [2021-12-16 03:16:22,142 INFO L226 Difference]: Without dead ends: 244 [2021-12-16 03:16:22,144 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:16:22,145 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 20 mSDsluCounter, 331 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 517 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 03:16:22,146 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 517 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:16:22,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-12-16 03:16:22,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 240. [2021-12-16 03:16:22,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 240 states, 161 states have (on average 1.2111801242236024) internal successors, (195), 165 states have internal predecessors, (195), 60 states have call successors, (60), 17 states have call predecessors, (60), 18 states have return successors, (94), 57 states have call predecessors, (94), 59 states have call successors, (94) [2021-12-16 03:16:22,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 349 transitions. [2021-12-16 03:16:22,183 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 349 transitions. Word has length 124 [2021-12-16 03:16:22,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:16:22,183 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 349 transitions. [2021-12-16 03:16:22,184 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 03:16:22,184 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 349 transitions. [2021-12-16 03:16:22,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-16 03:16:22,186 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:16:22,186 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:16:22,223 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 03:16:22,403 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:16:22,403 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:16:22,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:16:22,404 INFO L85 PathProgramCache]: Analyzing trace with hash 375207579, now seen corresponding path program 2 times [2021-12-16 03:16:22,404 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:16:22,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1802844827] [2021-12-16 03:16:22,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:16:22,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:16:22,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:22,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:16:22,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:22,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:16:22,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:22,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 03:16:22,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:22,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:16:22,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:22,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 03:16:22,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:22,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-16 03:16:22,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:22,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-16 03:16:22,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:22,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-16 03:16:22,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:22,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-16 03:16:22,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:22,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:16:22,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:22,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-16 03:16:22,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:22,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-16 03:16:22,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:22,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-16 03:16:22,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:22,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-16 03:16:22,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:22,752 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-12-16 03:16:22,752 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:16:22,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1802844827] [2021-12-16 03:16:22,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1802844827] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:16:22,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [77114769] [2021-12-16 03:16:22,753 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-16 03:16:22,753 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:16:22,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:16:22,754 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 03:16:22,755 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 03:16:23,632 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-16 03:16:23,632 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-16 03:16:23,653 INFO L263 TraceCheckSpWp]: Trace formula consists of 2744 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-16 03:16:23,657 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:16:23,920 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-16 03:16:23,920 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:16:23,921 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [77114769] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:16:23,921 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:16:23,921 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2021-12-16 03:16:23,921 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [238861537] [2021-12-16 03:16:23,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:16:23,922 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-16 03:16:23,922 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:16:23,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-16 03:16:23,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-16 03:16:23,923 INFO L87 Difference]: Start difference. First operand 240 states and 349 transitions. Second operand has 9 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 03:16:24,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:16:24,061 INFO L93 Difference]: Finished difference Result 461 states and 705 transitions. [2021-12-16 03:16:24,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-16 03:16:24,062 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 128 [2021-12-16 03:16:24,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:16:24,065 INFO L225 Difference]: With dead ends: 461 [2021-12-16 03:16:24,065 INFO L226 Difference]: Without dead ends: 255 [2021-12-16 03:16:24,066 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 166 GetRequests, 152 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-12-16 03:16:24,067 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 12 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1286 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:16:24,067 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1286 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-16 03:16:24,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-12-16 03:16:24,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2021-12-16 03:16:24,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 173 states have (on average 1.1965317919075145) internal successors, (207), 180 states have internal predecessors, (207), 60 states have call successors, (60), 17 states have call predecessors, (60), 21 states have return successors, (129), 57 states have call predecessors, (129), 59 states have call successors, (129) [2021-12-16 03:16:24,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 396 transitions. [2021-12-16 03:16:24,086 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 396 transitions. Word has length 128 [2021-12-16 03:16:24,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:16:24,086 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 396 transitions. [2021-12-16 03:16:24,087 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2021-12-16 03:16:24,087 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 396 transitions. [2021-12-16 03:16:24,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-16 03:16:24,090 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:16:24,090 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:16:24,124 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 03:16:24,303 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:16:24,303 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:16:24,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:16:24,304 INFO L85 PathProgramCache]: Analyzing trace with hash -1231805994, now seen corresponding path program 1 times [2021-12-16 03:16:24,304 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:16:24,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1920367750] [2021-12-16 03:16:24,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:16:24,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:16:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:24,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:16:24,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:24,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:16:24,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:24,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 03:16:24,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:24,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:16:24,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:24,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 03:16:24,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:24,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:16:24,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:24,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-16 03:16:24,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:24,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 03:16:24,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:24,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-16 03:16:24,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:24,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:16:24,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:24,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-16 03:16:24,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:24,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 03:16:24,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:24,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-16 03:16:24,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:24,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-16 03:16:24,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:24,541 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-12-16 03:16:24,541 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:16:24,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1920367750] [2021-12-16 03:16:24,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1920367750] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:16:24,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1642184144] [2021-12-16 03:16:24,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:16:24,542 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:16:24,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:16:24,544 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 03:16:24,545 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 03:16:25,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:25,032 INFO L263 TraceCheckSpWp]: Trace formula consists of 2749 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 03:16:25,036 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:16:25,245 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-12-16 03:16:25,245 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:16:25,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1642184144] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:16:25,246 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:16:25,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2021-12-16 03:16:25,246 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373358423] [2021-12-16 03:16:25,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:16:25,247 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:16:25,247 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:16:25,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:16:25,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:16:25,248 INFO L87 Difference]: Start difference. First operand 255 states and 396 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 03:16:25,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:16:25,283 INFO L93 Difference]: Finished difference Result 491 states and 807 transitions. [2021-12-16 03:16:25,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:16:25,284 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 130 [2021-12-16 03:16:25,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:16:25,286 INFO L225 Difference]: With dead ends: 491 [2021-12-16 03:16:25,287 INFO L226 Difference]: Without dead ends: 270 [2021-12-16 03:16:25,291 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:16:25,291 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 9 mSDsluCounter, 338 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 510 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 03:16:25,292 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 510 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:16:25,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-12-16 03:16:25,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 261. [2021-12-16 03:16:25,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 179 states have (on average 1.1899441340782122) internal successors, (213), 186 states have internal predecessors, (213), 60 states have call successors, (60), 17 states have call predecessors, (60), 21 states have return successors, (129), 57 states have call predecessors, (129), 59 states have call successors, (129) [2021-12-16 03:16:25,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 402 transitions. [2021-12-16 03:16:25,309 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 402 transitions. Word has length 130 [2021-12-16 03:16:25,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:16:25,309 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 402 transitions. [2021-12-16 03:16:25,310 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, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 03:16:25,310 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 402 transitions. [2021-12-16 03:16:25,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-16 03:16:25,312 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:16:25,313 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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 03:16:25,344 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 03:16:25,531 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,SelfDestructingSolverStorable11 [2021-12-16 03:16:25,531 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:16:25,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:16:25,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1711776084, now seen corresponding path program 1 times [2021-12-16 03:16:25,532 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:16:25,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457648378] [2021-12-16 03:16:25,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:16:25,532 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:16:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:25,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:16:25,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:25,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:16:25,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:25,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 03:16:25,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:25,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:16:25,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:25,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 03:16:25,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:25,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:16:25,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:25,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-16 03:16:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:25,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 03:16:25,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:25,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-16 03:16:25,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:25,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:16:25,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:25,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-16 03:16:25,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:25,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 03:16:25,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:25,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-16 03:16:25,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:25,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-16 03:16:25,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:25,853 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-12-16 03:16:25,853 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:16:25,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457648378] [2021-12-16 03:16:25,854 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457648378] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:16:25,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287902539] [2021-12-16 03:16:25,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:16:25,854 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:16:25,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:16:25,855 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 03:16:25,883 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 03:16:26,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:26,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 2754 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-16 03:16:26,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:16:26,632 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-12-16 03:16:26,632 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:16:26,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287902539] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:16:26,633 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:16:26,633 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2021-12-16 03:16:26,633 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [278493417] [2021-12-16 03:16:26,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:16:26,633 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-16 03:16:26,633 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:16:26,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-16 03:16:26,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-16 03:16:26,634 INFO L87 Difference]: Start difference. First operand 261 states and 402 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 03:16:26,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:16:26,785 INFO L93 Difference]: Finished difference Result 493 states and 813 transitions. [2021-12-16 03:16:26,786 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:16:26,786 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 130 [2021-12-16 03:16:26,787 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:16:26,789 INFO L225 Difference]: With dead ends: 493 [2021-12-16 03:16:26,789 INFO L226 Difference]: Without dead ends: 262 [2021-12-16 03:16:26,791 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 156 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-12-16 03:16:26,792 INFO L933 BasicCegarLoop]: 179 mSDtfsCounter, 23 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 603 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 44 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-16 03:16:26,792 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 603 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 44 Unchecked, 0.1s Time] [2021-12-16 03:16:26,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-12-16 03:16:26,806 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 253. [2021-12-16 03:16:26,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 172 states have (on average 1.1744186046511629) internal successors, (202), 178 states have internal predecessors, (202), 60 states have call successors, (60), 17 states have call predecessors, (60), 20 states have return successors, (117), 57 states have call predecessors, (117), 59 states have call successors, (117) [2021-12-16 03:16:26,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 379 transitions. [2021-12-16 03:16:26,809 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 379 transitions. Word has length 130 [2021-12-16 03:16:26,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:16:26,809 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 379 transitions. [2021-12-16 03:16:26,809 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 03:16:26,809 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 379 transitions. [2021-12-16 03:16:26,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-16 03:16:26,811 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:16:26,812 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:16:26,843 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 03:16:27,027 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-16 03:16:27,028 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:16:27,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:16:27,028 INFO L85 PathProgramCache]: Analyzing trace with hash -685694446, now seen corresponding path program 1 times [2021-12-16 03:16:27,028 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:16:27,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1882250576] [2021-12-16 03:16:27,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:16:27,028 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:16:27,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:27,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:16:27,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:27,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:16:27,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:27,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 03:16:27,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:27,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:16:27,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:27,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 03:16:27,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:27,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:16:27,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:27,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-16 03:16:27,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:27,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 03:16:27,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:27,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-16 03:16:27,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:27,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:16:27,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:27,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-16 03:16:27,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:27,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 03:16:27,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:27,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-16 03:16:27,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:27,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-16 03:16:27,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:27,231 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-12-16 03:16:27,231 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:16:27,231 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1882250576] [2021-12-16 03:16:27,231 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1882250576] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:16:27,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [801830556] [2021-12-16 03:16:27,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:16:27,232 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:16:27,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:16:27,233 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 03:16:27,263 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 03:16:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:27,686 INFO L263 TraceCheckSpWp]: Trace formula consists of 2751 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-16 03:16:27,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:16:27,893 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-12-16 03:16:27,893 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-16 03:16:27,893 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [801830556] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-16 03:16:27,893 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-16 03:16:27,894 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2021-12-16 03:16:27,895 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134928787] [2021-12-16 03:16:27,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-16 03:16:27,895 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-16 03:16:27,896 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:16:27,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-16 03:16:27,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-16 03:16:27,896 INFO L87 Difference]: Start difference. First operand 253 states and 379 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 03:16:27,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-16 03:16:27,923 INFO L93 Difference]: Finished difference Result 415 states and 619 transitions. [2021-12-16 03:16:27,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-16 03:16:27,924 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 130 [2021-12-16 03:16:27,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-16 03:16:27,925 INFO L225 Difference]: With dead ends: 415 [2021-12-16 03:16:27,925 INFO L226 Difference]: Without dead ends: 198 [2021-12-16 03:16:27,927 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-16 03:16:27,929 INFO L933 BasicCegarLoop]: 172 mSDtfsCounter, 34 mSDsluCounter, 336 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 508 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 03:16:27,929 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [34 Valid, 508 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-16 03:16:27,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-12-16 03:16:27,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 196. [2021-12-16 03:16:27,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 136 states have (on average 1.1397058823529411) internal successors, (155), 140 states have internal predecessors, (155), 41 states have call successors, (41), 16 states have call predecessors, (41), 18 states have return successors, (65), 39 states have call predecessors, (65), 40 states have call successors, (65) [2021-12-16 03:16:27,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 261 transitions. [2021-12-16 03:16:27,941 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 261 transitions. Word has length 130 [2021-12-16 03:16:27,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-16 03:16:27,942 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 261 transitions. [2021-12-16 03:16:27,942 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-16 03:16:27,942 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 261 transitions. [2021-12-16 03:16:27,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-16 03:16:27,943 INFO L506 BasicCegarLoop]: Found error trace [2021-12-16 03:16:27,944 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-16 03:16:27,973 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 03:16:28,163 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,SelfDestructingSolverStorable13 [2021-12-16 03:16:28,163 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-16 03:16:28,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-16 03:16:28,164 INFO L85 PathProgramCache]: Analyzing trace with hash 1702869584, now seen corresponding path program 1 times [2021-12-16 03:16:28,164 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-16 03:16:28,164 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [573828292] [2021-12-16 03:16:28,164 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:16:28,164 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-16 03:16:28,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:28,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-16 03:16:28,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:28,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-16 03:16:28,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:28,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-16 03:16:28,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:28,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:16:28,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:28,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-16 03:16:28,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:28,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-16 03:16:28,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:28,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-16 03:16:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:28,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-16 03:16:28,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:28,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-16 03:16:28,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:28,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-16 03:16:28,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:28,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-16 03:16:28,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:28,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-16 03:16:28,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:28,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-16 03:16:28,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:28,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-16 03:16:28,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:29,145 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 34 proven. 16 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-12-16 03:16:29,146 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-16 03:16:29,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [573828292] [2021-12-16 03:16:29,146 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [573828292] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:16:29,146 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1999686668] [2021-12-16 03:16:29,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-16 03:16:29,146 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-16 03:16:29,146 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-16 03:16:29,148 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 03:16:29,149 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 03:16:29,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-16 03:16:29,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 2746 conjuncts, 69 conjunts are in the unsatisfiable core [2021-12-16 03:16:29,590 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-16 03:16:29,730 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 03:16:32,029 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:16:32,030 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 22 treesize of output 21 [2021-12-16 03:16:38,479 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-16 03:16:38,480 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 22 treesize of output 21 [2021-12-16 03:16:47,258 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 57 proven. 32 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-16 03:16:47,259 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-16 03:16:48,713 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1999686668] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-16 03:16:48,714 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-16 03:16:48,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17] total 35 [2021-12-16 03:16:48,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417517432] [2021-12-16 03:16:48,714 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-16 03:16:48,715 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-12-16 03:16:48,715 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-16 03:16:48,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-12-16 03:16:48,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1597, Unknown=2, NotChecked=0, Total=1722 [2021-12-16 03:16:48,716 INFO L87 Difference]: Start difference. First operand 196 states and 261 transitions. Second operand has 35 states, 31 states have (on average 4.612903225806452) internal successors, (143), 32 states have internal predecessors, (143), 17 states have call successors, (31), 6 states have call predecessors, (31), 7 states have return successors, (28), 13 states have call predecessors, (28), 14 states have call successors, (28)