./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 [2021-12-17 23:59:42,547 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-17 23:59:42,549 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-17 23:59:42,590 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-17 23:59:42,591 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-17 23:59:42,593 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-17 23:59:42,595 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-17 23:59:42,597 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-17 23:59:42,599 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-17 23:59:42,602 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-17 23:59:42,602 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-17 23:59:42,604 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-17 23:59:42,604 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-17 23:59:42,605 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-17 23:59:42,607 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-17 23:59:42,608 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-17 23:59:42,609 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-17 23:59:42,609 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-17 23:59:42,612 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-17 23:59:42,616 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-17 23:59:42,617 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-17 23:59:42,618 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-17 23:59:42,619 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-17 23:59:42,620 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-17 23:59:42,624 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-17 23:59:42,624 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-17 23:59:42,625 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-17 23:59:42,626 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-17 23:59:42,626 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-17 23:59:42,627 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-17 23:59:42,627 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-17 23:59:42,628 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-17 23:59:42,629 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-17 23:59:42,631 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-17 23:59:42,632 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-17 23:59:42,632 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-17 23:59:42,632 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-17 23:59:42,633 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-17 23:59:42,633 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-17 23:59:42,633 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-17 23:59:42,634 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-17 23:59:42,635 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-17 23:59:42,661 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-17 23:59:42,661 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-17 23:59:42,662 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-17 23:59:42,662 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-17 23:59:42,663 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-17 23:59:42,663 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-17 23:59:42,663 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-17 23:59:42,663 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-17 23:59:42,664 INFO L138 SettingsManager]: * Use SBE=true [2021-12-17 23:59:42,664 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-17 23:59:42,664 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-17 23:59:42,664 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-17 23:59:42,665 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-17 23:59:42,665 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-17 23:59:42,665 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-17 23:59:42,665 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-17 23:59:42,665 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-17 23:59:42,665 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-17 23:59:42,666 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-17 23:59:42,666 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-17 23:59:42,666 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-17 23:59:42,666 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 23:59:42,666 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-17 23:59:42,666 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-17 23:59:42,666 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-17 23:59:42,667 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-17 23:59:42,667 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-17 23:59:42,668 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-17 23:59:42,668 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-17 23:59:42,668 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-17 23:59:42,668 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-17 23:59:42,668 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e695a989d07c92d21e9a41b59ca742c73a2098242f3cafca723523a39a7793cb [2021-12-17 23:59:42,860 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-17 23:59:42,874 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-17 23:59:42,876 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-17 23:59:42,877 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-17 23:59:42,879 INFO L275 PluginConnector]: CDTParser initialized [2021-12-17 23:59:42,880 INFO L432 ainManager$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 [2021-12-17 23:59:42,942 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76ae309b3/01c5bd13c3b641fc90ce894dcd5d9513/FLAGcc1d1c592 [2021-12-17 23:59:43,481 INFO L306 CDTParser]: Found 1 translation units. [2021-12-17 23:59:43,482 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be64_harness.i [2021-12-17 23:59:43,512 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76ae309b3/01c5bd13c3b641fc90ce894dcd5d9513/FLAGcc1d1c592 [2021-12-17 23:59:43,711 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76ae309b3/01c5bd13c3b641fc90ce894dcd5d9513 [2021-12-17 23:59:43,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-17 23:59:43,714 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-17 23:59:43,715 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-17 23:59:43,715 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-17 23:59:43,717 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-17 23:59:43,718 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 11:59:43" (1/1) ... [2021-12-17 23:59:43,719 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c8cfbe and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:59:43, skipping insertion in model container [2021-12-17 23:59:43,720 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 11:59:43" (1/1) ... [2021-12-17 23:59:43,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-17 23:59:43,798 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-17 23:59:43,993 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] [2021-12-17 23:59:43,999 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] [2021-12-17 23:59:44,511 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:59:44,511 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:59:44,512 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:59:44,512 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:59:44,513 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:59:44,524 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:59:44,525 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:59:44,526 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:59:44,526 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:59:44,728 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-17 23:59:44,729 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-17 23:59:44,729 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-17 23:59:44,730 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-17 23:59:44,731 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-17 23:59:44,732 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-17 23:59:44,732 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-17 23:59:44,732 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-17 23:59:44,733 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-17 23:59:44,733 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-17 23:59:44,808 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-17 23:59:44,889 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:59:44,889 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:59:44,959 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 23:59:44,995 INFO L203 MainTranslator]: Completed pre-run [2021-12-17 23:59:45,011 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] [2021-12-17 23:59:45,013 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] [2021-12-17 23:59:45,037 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:59:45,038 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:59:45,038 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:59:45,039 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:59:45,039 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:59:45,045 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:59:45,046 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:59:45,047 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:59:45,047 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:59:45,077 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-17 23:59:45,078 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-17 23:59:45,078 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-17 23:59:45,079 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-17 23:59:45,079 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-17 23:59:45,079 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-17 23:59:45,080 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-17 23:59:45,080 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-17 23:59:45,080 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-17 23:59:45,082 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-17 23:59:45,096 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-17 23:59:45,153 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:59:45,154 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-17 23:59:45,173 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-17 23:59:45,312 INFO L208 MainTranslator]: Completed translation [2021-12-17 23:59:45,313 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:59:45 WrapperNode [2021-12-17 23:59:45,313 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-17 23:59:45,313 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-17 23:59:45,314 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-17 23:59:45,314 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-17 23:59:45,318 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:59:45" (1/1) ... [2021-12-17 23:59:45,417 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:59:45" (1/1) ... [2021-12-17 23:59:45,489 INFO L137 Inliner]: procedures = 691, calls = 2619, calls flagged for inlining = 62, calls inlined = 9, statements flattened = 861 [2021-12-17 23:59:45,489 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-17 23:59:45,490 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-17 23:59:45,490 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-17 23:59:45,490 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-17 23:59:45,496 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:59:45" (1/1) ... [2021-12-17 23:59:45,496 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:59:45" (1/1) ... [2021-12-17 23:59:45,504 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:59:45" (1/1) ... [2021-12-17 23:59:45,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:59:45" (1/1) ... [2021-12-17 23:59:45,532 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:59:45" (1/1) ... [2021-12-17 23:59:45,543 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:59:45" (1/1) ... [2021-12-17 23:59:45,554 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:59:45" (1/1) ... [2021-12-17 23:59:45,567 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-17 23:59:45,568 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-17 23:59:45,569 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-17 23:59:45,569 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-17 23:59:45,570 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:59:45" (1/1) ... [2021-12-17 23:59:45,574 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-17 23:59:45,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 23:59:45,592 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) [2021-12-17 23:59:45,610 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 [2021-12-17 23:59:45,625 INFO L130 BoogieDeclarations]: Found specification of procedure htonl [2021-12-17 23:59:45,625 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hton64 [2021-12-17 23:59:45,625 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hton64 [2021-12-17 23:59:45,625 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2021-12-17 23:59:45,626 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2021-12-17 23:59:45,626 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-17 23:59:45,626 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-17 23:59:45,626 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-17 23:59:45,626 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-17 23:59:45,627 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-17 23:59:45,627 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-17 23:59:45,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-17 23:59:45,628 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-17 23:59:45,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-17 23:59:45,628 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2021-12-17 23:59:45,629 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2021-12-17 23:59:45,629 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-17 23:59:45,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-17 23:59:45,629 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2021-12-17 23:59:45,629 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2021-12-17 23:59:45,629 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2021-12-17 23:59:45,629 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2021-12-17 23:59:45,629 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-17 23:59:45,630 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-17 23:59:45,630 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2021-12-17 23:59:45,630 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2021-12-17 23:59:45,630 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-17 23:59:45,630 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-17 23:59:45,630 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2021-12-17 23:59:45,630 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2021-12-17 23:59:45,631 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-17 23:59:45,631 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-17 23:59:45,632 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-17 23:59:45,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-17 23:59:45,632 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_big_endian [2021-12-17 23:59:45,632 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_big_endian [2021-12-17 23:59:45,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-17 23:59:45,890 INFO L236 CfgBuilder]: Building ICFG [2021-12-17 23:59:45,892 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-17 23:59:46,390 INFO L277 CfgBuilder]: Performing block encoding [2021-12-17 23:59:46,396 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-17 23:59:46,396 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-17 23:59:46,398 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 11:59:46 BoogieIcfgContainer [2021-12-17 23:59:46,398 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-17 23:59:46,399 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-17 23:59:46,399 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-17 23:59:46,402 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-17 23:59:46,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 11:59:43" (1/3) ... [2021-12-17 23:59:46,402 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22325838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 11:59:46, skipping insertion in model container [2021-12-17 23:59:46,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:59:45" (2/3) ... [2021-12-17 23:59:46,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@22325838 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 11:59:46, skipping insertion in model container [2021-12-17 23:59:46,403 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 11:59:46" (3/3) ... [2021-12-17 23:59:46,405 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_be64_harness.i [2021-12-17 23:59:46,409 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-17 23:59:46,409 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-17 23:59:46,447 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-17 23:59:46,462 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 [2021-12-17 23:59:46,463 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-17 23:59:46,477 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) [2021-12-17 23:59:46,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-17 23:59:46,487 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 23:59:46,488 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] [2021-12-17 23:59:46,488 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 23:59:46,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:59:46,492 INFO L85 PathProgramCache]: Analyzing trace with hash -598164550, now seen corresponding path program 1 times [2021-12-17 23:59:46,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:59:46,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1656538727] [2021-12-17 23:59:46,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:59:46,499 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:59:46,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:46,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 23:59:46,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:46,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 23:59:46,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:46,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 23:59:46,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:46,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 23:59:46,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:46,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-17 23:59:46,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:46,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 23:59:46,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:46,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-17 23:59:46,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:46,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 23:59:46,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:46,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-17 23:59:46,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:46,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 23:59:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:46,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-17 23:59:46,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:46,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-17 23:59:46,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:46,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 23:59:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:46,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-17 23:59:46,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:47,004 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2021-12-17 23:59:47,004 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:59:47,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1656538727] [2021-12-17 23:59:47,005 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1656538727] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:59:47,005 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 23:59:47,005 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-17 23:59:47,006 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204255754] [2021-12-17 23:59:47,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:59:47,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-17 23:59:47,010 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:59:47,025 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-17 23:59:47,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-17 23:59:47,028 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) [2021-12-17 23:59:47,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 23:59:47,187 INFO L93 Difference]: Finished difference Result 280 states and 391 transitions. [2021-12-17 23:59:47,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-17 23:59:47,189 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 [2021-12-17 23:59:47,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 23:59:47,194 INFO L225 Difference]: With dead ends: 280 [2021-12-17 23:59:47,195 INFO L226 Difference]: Without dead ends: 137 [2021-12-17 23:59:47,198 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 [2021-12-17 23:59:47,200 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 63 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 23:59:47,200 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [77 Valid, 207 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 23:59:47,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-12-17 23:59:47,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2021-12-17 23:59:47,228 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) [2021-12-17 23:59:47,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 177 transitions. [2021-12-17 23:59:47,230 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 177 transitions. Word has length 96 [2021-12-17 23:59:47,231 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 23:59:47,231 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 177 transitions. [2021-12-17 23:59:47,231 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) [2021-12-17 23:59:47,231 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 177 transitions. [2021-12-17 23:59:47,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-12-17 23:59:47,253 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 23:59:47,253 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] [2021-12-17 23:59:47,253 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-17 23:59:47,253 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 23:59:47,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:59:47,254 INFO L85 PathProgramCache]: Analyzing trace with hash -1705408322, now seen corresponding path program 1 times [2021-12-17 23:59:47,254 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:59:47,254 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115934719] [2021-12-17 23:59:47,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:59:47,255 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:59:47,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:47,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 23:59:47,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:47,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 23:59:47,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:47,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 23:59:47,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:47,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 23:59:47,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:47,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-17 23:59:47,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:47,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-17 23:59:47,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:47,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2021-12-17 23:59:47,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:47,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 23:59:47,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:47,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-17 23:59:47,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:47,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 23:59:47,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:47,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-17 23:59:47,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:47,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-17 23:59:47,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:47,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 23:59:47,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:47,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2021-12-17 23:59:47,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:47,504 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-12-17 23:59:47,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:59:47,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115934719] [2021-12-17 23:59:47,505 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115934719] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 23:59:47,505 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270320491] [2021-12-17 23:59:47,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:59:47,505 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 23:59:47,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 23:59:47,506 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) [2021-12-17 23:59:47,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-17 23:59:47,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:47,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 2654 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-17 23:59:47,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 23:59:48,133 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2021-12-17 23:59:48,133 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 23:59:48,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [270320491] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:59:48,134 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 23:59:48,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2021-12-17 23:59:48,134 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201141317] [2021-12-17 23:59:48,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:59:48,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-17 23:59:48,135 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:59:48,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-17 23:59:48,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-12-17 23:59:48,136 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) [2021-12-17 23:59:48,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 23:59:48,263 INFO L93 Difference]: Finished difference Result 252 states and 333 transitions. [2021-12-17 23:59:48,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-17 23:59:48,267 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 [2021-12-17 23:59:48,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 23:59:48,275 INFO L225 Difference]: With dead ends: 252 [2021-12-17 23:59:48,275 INFO L226 Difference]: Without dead ends: 140 [2021-12-17 23:59:48,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2021-12-17 23:59:48,280 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 [2021-12-17 23:59:48,281 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] [2021-12-17 23:59:48,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-12-17 23:59:48,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2021-12-17 23:59:48,303 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) [2021-12-17 23:59:48,304 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 183 transitions. [2021-12-17 23:59:48,305 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 183 transitions. Word has length 96 [2021-12-17 23:59:48,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 23:59:48,305 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 183 transitions. [2021-12-17 23:59:48,306 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) [2021-12-17 23:59:48,306 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 183 transitions. [2021-12-17 23:59:48,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-12-17 23:59:48,311 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 23:59:48,311 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] [2021-12-17 23:59:48,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-17 23:59:48,523 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 [2021-12-17 23:59:48,524 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 23:59:48,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:59:48,524 INFO L85 PathProgramCache]: Analyzing trace with hash 870874419, now seen corresponding path program 1 times [2021-12-17 23:59:48,524 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:59:48,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812926370] [2021-12-17 23:59:48,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:59:48,524 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:59:48,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:48,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 23:59:48,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:48,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 23:59:48,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:48,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 23:59:48,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:48,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 23:59:48,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:48,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-17 23:59:48,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:48,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 23:59:48,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:48,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 23:59:48,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:48,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-17 23:59:48,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:48,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-17 23:59:48,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:48,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 23:59:48,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:48,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-17 23:59:48,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:48,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 23:59:48,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:48,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-17 23:59:48,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:48,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2021-12-17 23:59:48,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:48,855 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-12-17 23:59:48,855 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:59:48,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812926370] [2021-12-17 23:59:48,857 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812926370] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 23:59:48,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1117652811] [2021-12-17 23:59:48,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:59:48,857 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 23:59:48,857 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 23:59:48,858 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) [2021-12-17 23:59:48,859 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-17 23:59:49,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:49,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 2671 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-17 23:59:49,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 23:59:49,445 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-12-17 23:59:49,445 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 23:59:49,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1117652811] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:59:49,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 23:59:49,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2021-12-17 23:59:49,446 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1243668876] [2021-12-17 23:59:49,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:59:49,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-17 23:59:49,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:59:49,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-17 23:59:49,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2021-12-17 23:59:49,447 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) [2021-12-17 23:59:49,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 23:59:49,629 INFO L93 Difference]: Finished difference Result 247 states and 324 transitions. [2021-12-17 23:59:49,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-17 23:59:49,630 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 [2021-12-17 23:59:49,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 23:59:49,631 INFO L225 Difference]: With dead ends: 247 [2021-12-17 23:59:49,631 INFO L226 Difference]: Without dead ends: 140 [2021-12-17 23:59:49,632 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 [2021-12-17 23:59:49,632 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, 0.1s IncrementalHoareTripleChecker+Time [2021-12-17 23:59:49,633 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [225 Valid, 636 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-17 23:59:49,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-12-17 23:59:49,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2021-12-17 23:59:49,640 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) [2021-12-17 23:59:49,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 182 transitions. [2021-12-17 23:59:49,641 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 182 transitions. Word has length 102 [2021-12-17 23:59:49,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 23:59:49,641 INFO L470 AbstractCegarLoop]: Abstraction has 140 states and 182 transitions. [2021-12-17 23:59:49,641 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) [2021-12-17 23:59:49,642 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 182 transitions. [2021-12-17 23:59:49,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2021-12-17 23:59:49,643 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 23:59:49,643 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] [2021-12-17 23:59:49,667 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-12-17 23:59:49,861 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 [2021-12-17 23:59:49,862 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 23:59:49,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:59:49,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1336541160, now seen corresponding path program 2 times [2021-12-17 23:59:49,862 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:59:49,863 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [362485730] [2021-12-17 23:59:49,863 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:59:49,863 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:59:49,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:50,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 23:59:50,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:50,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 23:59:50,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:50,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 23:59:50,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:50,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 23:59:50,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:50,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-17 23:59:50,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:50,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 23:59:50,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:50,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 23:59:50,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:50,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-17 23:59:50,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:50,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-17 23:59:50,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:50,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 23:59:50,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:50,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 23:59:50,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:50,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-17 23:59:50,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:50,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-17 23:59:50,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:50,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2021-12-17 23:59:50,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:50,187 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2021-12-17 23:59:50,187 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:59:50,187 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [362485730] [2021-12-17 23:59:50,188 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [362485730] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 23:59:50,188 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675781524] [2021-12-17 23:59:50,188 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-17 23:59:50,188 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 23:59:50,188 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 23:59:50,189 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) [2021-12-17 23:59:50,190 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-17 23:59:50,841 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-17 23:59:50,842 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-17 23:59:50,851 INFO L263 TraceCheckSpWp]: Trace formula consists of 2688 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-17 23:59:50,856 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 23:59:50,994 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-17 23:59:50,995 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-17 23:59:50,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675781524] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:59:50,995 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-17 23:59:50,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 12 [2021-12-17 23:59:50,995 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2083846932] [2021-12-17 23:59:50,996 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:59:50,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-17 23:59:50,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:59:50,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-17 23:59:50,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2021-12-17 23:59:50,997 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) [2021-12-17 23:59:51,084 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 23:59:51,084 INFO L93 Difference]: Finished difference Result 231 states and 303 transitions. [2021-12-17 23:59:51,085 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-17 23:59:51,085 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 [2021-12-17 23:59:51,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 23:59:51,086 INFO L225 Difference]: With dead ends: 231 [2021-12-17 23:59:51,086 INFO L226 Difference]: Without dead ends: 137 [2021-12-17 23:59:51,087 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 [2021-12-17 23:59:51,087 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 [2021-12-17 23:59:51,088 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] [2021-12-17 23:59:51,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2021-12-17 23:59:51,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2021-12-17 23:59:51,103 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) [2021-12-17 23:59:51,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 176 transitions. [2021-12-17 23:59:51,104 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 176 transitions. Word has length 108 [2021-12-17 23:59:51,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 23:59:51,104 INFO L470 AbstractCegarLoop]: Abstraction has 137 states and 176 transitions. [2021-12-17 23:59:51,104 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) [2021-12-17 23:59:51,105 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 176 transitions. [2021-12-17 23:59:51,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-12-17 23:59:51,105 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 23:59:51,105 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] [2021-12-17 23:59:51,131 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-17 23:59:51,319 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 [2021-12-17 23:59:51,319 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 23:59:51,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:59:51,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1211043646, now seen corresponding path program 1 times [2021-12-17 23:59:51,320 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:59:51,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [478132] [2021-12-17 23:59:51,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:59:51,320 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:59:51,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:51,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 23:59:51,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:51,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 23:59:51,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:51,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 23:59:51,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:51,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 23:59:51,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:51,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-17 23:59:51,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:51,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 23:59:51,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:51,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 23:59:51,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:51,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-17 23:59:51,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:51,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-17 23:59:51,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:51,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 23:59:51,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:51,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 23:59:51,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:51,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-17 23:59:51,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:51,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 23:59:51,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:51,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-17 23:59:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:51,635 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-12-17 23:59:51,636 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:59:51,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [478132] [2021-12-17 23:59:51,636 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [478132] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:59:51,636 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 23:59:51,636 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-17 23:59:51,636 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369169049] [2021-12-17 23:59:51,636 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:59:51,637 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-17 23:59:51,637 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:59:51,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-17 23:59:51,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-12-17 23:59:51,638 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) [2021-12-17 23:59:52,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 23:59:52,011 INFO L93 Difference]: Finished difference Result 149 states and 193 transitions. [2021-12-17 23:59:52,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-17 23:59:52,012 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 [2021-12-17 23:59:52,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 23:59:52,013 INFO L225 Difference]: With dead ends: 149 [2021-12-17 23:59:52,013 INFO L226 Difference]: Without dead ends: 147 [2021-12-17 23:59:52,013 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 [2021-12-17 23:59:52,014 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 89 mSDsluCounter, 627 mSDsCounter, 0 mSdLazyCounter, 500 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 23:59:52,014 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [106 Valid, 783 Invalid, 540 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 500 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 23:59:52,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2021-12-17 23:59:52,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 146. [2021-12-17 23:59:52,020 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) [2021-12-17 23:59:52,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 190 transitions. [2021-12-17 23:59:52,021 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 190 transitions. Word has length 120 [2021-12-17 23:59:52,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 23:59:52,021 INFO L470 AbstractCegarLoop]: Abstraction has 146 states and 190 transitions. [2021-12-17 23:59:52,021 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) [2021-12-17 23:59:52,021 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 190 transitions. [2021-12-17 23:59:52,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-17 23:59:52,022 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 23:59:52,022 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] [2021-12-17 23:59:52,022 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-17 23:59:52,022 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 23:59:52,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:59:52,023 INFO L85 PathProgramCache]: Analyzing trace with hash 1628651524, now seen corresponding path program 1 times [2021-12-17 23:59:52,023 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:59:52,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581302465] [2021-12-17 23:59:52,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:59:52,023 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:59:52,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:52,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 23:59:52,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:52,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 23:59:52,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:52,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 23:59:52,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:52,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 23:59:52,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:52,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-17 23:59:52,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:52,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 23:59:52,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:52,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 23:59:52,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:52,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-17 23:59:52,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:52,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-17 23:59:52,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:52,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 23:59:52,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:52,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 23:59:52,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:52,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-17 23:59:52,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:52,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 23:59:52,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:52,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-17 23:59:52,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:52,428 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-12-17 23:59:52,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:59:52,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581302465] [2021-12-17 23:59:52,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581302465] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:59:52,428 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 23:59:52,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-17 23:59:52,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805483826] [2021-12-17 23:59:52,429 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:59:52,429 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-17 23:59:52,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:59:52,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-17 23:59:52,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-12-17 23:59:52,430 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) [2021-12-17 23:59:52,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 23:59:52,886 INFO L93 Difference]: Finished difference Result 236 states and 320 transitions. [2021-12-17 23:59:52,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-17 23:59:52,887 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 [2021-12-17 23:59:52,887 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 23:59:52,888 INFO L225 Difference]: With dead ends: 236 [2021-12-17 23:59:52,888 INFO L226 Difference]: Without dead ends: 170 [2021-12-17 23:59:52,889 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 [2021-12-17 23:59:52,889 INFO L933 BasicCegarLoop]: 144 mSDtfsCounter, 193 mSDsluCounter, 475 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.3s IncrementalHoareTripleChecker+Time [2021-12-17 23:59:52,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [199 Valid, 619 Invalid, 563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-17 23:59:52,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-12-17 23:59:52,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 164. [2021-12-17 23:59:52,898 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) [2021-12-17 23:59:52,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 225 transitions. [2021-12-17 23:59:52,899 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 225 transitions. Word has length 124 [2021-12-17 23:59:52,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 23:59:52,900 INFO L470 AbstractCegarLoop]: Abstraction has 164 states and 225 transitions. [2021-12-17 23:59:52,900 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) [2021-12-17 23:59:52,900 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 225 transitions. [2021-12-17 23:59:52,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-17 23:59:52,901 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 23:59:52,901 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] [2021-12-17 23:59:52,902 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-17 23:59:52,902 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 23:59:52,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:59:52,902 INFO L85 PathProgramCache]: Analyzing trace with hash 348787846, now seen corresponding path program 1 times [2021-12-17 23:59:52,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:59:52,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042796433] [2021-12-17 23:59:52,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:59:52,903 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:59:53,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:53,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 23:59:53,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:53,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 23:59:53,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:53,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 23:59:53,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:53,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 23:59:53,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:53,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-17 23:59:53,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:53,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 23:59:53,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:53,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 23:59:53,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:53,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-17 23:59:53,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:53,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-17 23:59:53,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:53,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 23:59:53,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:53,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 23:59:53,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:53,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-17 23:59:53,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:53,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 23:59:53,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:53,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-17 23:59:53,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:53,272 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 20 proven. 10 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-12-17 23:59:53,272 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:59:53,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042796433] [2021-12-17 23:59:53,273 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042796433] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 23:59:53,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115062119] [2021-12-17 23:59:53,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:59:53,273 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 23:59:53,273 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 23:59:53,274 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) [2021-12-17 23:59:53,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-17 23:59:53,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:53,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 2724 conjuncts, 77 conjunts are in the unsatisfiable core [2021-12-17 23:59:53,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-17 23:59:53,758 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 [2021-12-17 23:59:54,026 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-17 23:59:54,026 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 [2021-12-17 23:59:54,153 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-12-17 23:59:54,154 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 [2021-12-17 23:59:54,833 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 63 proven. 26 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2021-12-17 23:59:54,834 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-17 23:59:55,392 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 40 proven. 10 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-12-17 23:59:55,392 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115062119] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-17 23:59:55,392 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-17 23:59:55,393 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 19, 11] total 34 [2021-12-17 23:59:55,393 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90017614] [2021-12-17 23:59:55,393 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-17 23:59:55,393 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2021-12-17 23:59:55,393 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:59:55,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2021-12-17 23:59:55,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1011, Unknown=0, NotChecked=0, Total=1122 [2021-12-17 23:59:55,395 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) [2021-12-17 23:59:58,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 23:59:58,199 INFO L93 Difference]: Finished difference Result 461 states and 707 transitions. [2021-12-17 23:59:58,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2021-12-17 23:59:58,204 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 [2021-12-17 23:59:58,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 23:59:58,208 INFO L225 Difference]: With dead ends: 461 [2021-12-17 23:59:58,208 INFO L226 Difference]: Without dead ends: 337 [2021-12-17 23:59:58,210 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 326 GetRequests, 250 SyntacticMatches, 13 SemanticMatches, 63 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 973 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=490, Invalid=3670, Unknown=0, NotChecked=0, Total=4160 [2021-12-17 23:59:58,211 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 691 mSDsluCounter, 2166 mSDsCounter, 0 mSdLazyCounter, 2813 mSolverCounterSat, 365 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s 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, 1.8s IncrementalHoareTripleChecker+Time [2021-12-17 23:59:58,211 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [714 Valid, 2388 Invalid, 3729 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [365 Valid, 2813 Invalid, 0 Unknown, 551 Unchecked, 1.8s Time] [2021-12-17 23:59:58,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2021-12-17 23:59:58,226 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 239. [2021-12-17 23:59:58,227 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) [2021-12-17 23:59:58,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 373 transitions. [2021-12-17 23:59:58,229 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 373 transitions. Word has length 124 [2021-12-17 23:59:58,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 23:59:58,229 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 373 transitions. [2021-12-17 23:59:58,230 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) [2021-12-17 23:59:58,230 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 373 transitions. [2021-12-17 23:59:58,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-17 23:59:58,231 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 23:59:58,231 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] [2021-12-17 23:59:58,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-17 23:59:58,447 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 [2021-12-17 23:59:58,447 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 23:59:58,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:59:58,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1847506242, now seen corresponding path program 1 times [2021-12-17 23:59:58,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:59:58,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [257315698] [2021-12-17 23:59:58,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:59:58,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:59:58,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:58,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 23:59:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:58,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 23:59:58,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:58,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 23:59:58,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:58,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 23:59:58,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:58,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-17 23:59:58,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:58,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 23:59:58,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:58,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 23:59:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:58,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-17 23:59:58,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:58,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-17 23:59:58,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:58,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 23:59:58,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:58,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 23:59:58,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:58,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-17 23:59:58,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:58,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 23:59:58,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:58,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-17 23:59:58,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:58,810 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2021-12-17 23:59:58,810 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:59:58,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [257315698] [2021-12-17 23:59:58,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [257315698] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-17 23:59:58,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-17 23:59:58,810 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-17 23:59:58,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [311759563] [2021-12-17 23:59:58,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-17 23:59:58,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-17 23:59:58,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-17 23:59:58,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-17 23:59:58,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-17 23:59:58,812 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) [2021-12-17 23:59:59,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-17 23:59:59,004 INFO L93 Difference]: Finished difference Result 424 states and 662 transitions. [2021-12-17 23:59:59,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-17 23:59:59,004 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 [2021-12-17 23:59:59,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-17 23:59:59,005 INFO L225 Difference]: With dead ends: 424 [2021-12-17 23:59:59,006 INFO L226 Difference]: Without dead ends: 239 [2021-12-17 23:59:59,006 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 [2021-12-17 23:59:59,007 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 62 mSDsluCounter, 227 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2021-12-17 23:59:59,007 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] [2021-12-17 23:59:59,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2021-12-17 23:59:59,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2021-12-17 23:59:59,019 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) [2021-12-17 23:59:59,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 372 transitions. [2021-12-17 23:59:59,021 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 372 transitions. Word has length 124 [2021-12-17 23:59:59,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-17 23:59:59,021 INFO L470 AbstractCegarLoop]: Abstraction has 239 states and 372 transitions. [2021-12-17 23:59:59,022 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) [2021-12-17 23:59:59,022 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 372 transitions. [2021-12-17 23:59:59,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-17 23:59:59,023 INFO L506 BasicCegarLoop]: Found error trace [2021-12-17 23:59:59,023 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] [2021-12-17 23:59:59,024 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-17 23:59:59,024 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-17 23:59:59,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-17 23:59:59,024 INFO L85 PathProgramCache]: Analyzing trace with hash -1678291039, now seen corresponding path program 1 times [2021-12-17 23:59:59,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-17 23:59:59,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [107984455] [2021-12-17 23:59:59,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:59:59,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-17 23:59:59,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:59,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-17 23:59:59,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:59,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-17 23:59:59,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:59,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-17 23:59:59,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:59,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 23:59:59,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:59,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-17 23:59:59,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:59,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-17 23:59:59,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:59,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-17 23:59:59,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:59,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-17 23:59:59,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:59,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-17 23:59:59,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:59,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-17 23:59:59,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:59,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-17 23:59:59,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:59,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-17 23:59:59,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:59,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-17 23:59:59,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:59,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-17 23:59:59,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-17 23:59:59,762 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 20 proven. 26 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-12-17 23:59:59,763 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-17 23:59:59,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [107984455] [2021-12-17 23:59:59,763 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [107984455] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-17 23:59:59,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1176116791] [2021-12-17 23:59:59,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-17 23:59:59,763 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-17 23:59:59,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-17 23:59:59,764 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) [2021-12-17 23:59:59,765 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-18 00:00:00,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:00,114 INFO L263 TraceCheckSpWp]: Trace formula consists of 2737 conjuncts, 38 conjunts are in the unsatisfiable core [2021-12-18 00:00:00,118 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:00:00,261 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 00:00:02,641 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2021-12-18 00:00:02,642 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:00:02,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1176116791] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:00:02,642 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:00:02,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [18] total 28 [2021-12-18 00:00:02,642 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045084220] [2021-12-18 00:00:02,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:00:02,642 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-18 00:00:02,642 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:00:02,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-18 00:00:02,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=683, Unknown=1, NotChecked=0, Total=756 [2021-12-18 00:00:02,643 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) [2021-12-18 00:00:02,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:00:02,752 INFO L93 Difference]: Finished difference Result 472 states and 729 transitions. [2021-12-18 00:00:02,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 00:00:02,753 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 [2021-12-18 00:00:02,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:00:02,754 INFO L225 Difference]: With dead ends: 472 [2021-12-18 00:00:02,755 INFO L226 Difference]: Without dead ends: 260 [2021-12-18 00:00:02,756 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 143 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 116 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=78, Invalid=733, Unknown=1, NotChecked=0, Total=812 [2021-12-18 00:00:02,756 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 [2021-12-18 00:00:02,756 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] [2021-12-18 00:00:02,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2021-12-18 00:00:02,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 256. [2021-12-18 00:00:02,767 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) [2021-12-18 00:00:02,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 256 states to 256 states and 391 transitions. [2021-12-18 00:00:02,769 INFO L78 Accepts]: Start accepts. Automaton has 256 states and 391 transitions. Word has length 124 [2021-12-18 00:00:02,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:00:02,770 INFO L470 AbstractCegarLoop]: Abstraction has 256 states and 391 transitions. [2021-12-18 00:00:02,770 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) [2021-12-18 00:00:02,770 INFO L276 IsEmpty]: Start isEmpty. Operand 256 states and 391 transitions. [2021-12-18 00:00:02,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2021-12-18 00:00:02,771 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:00:02,771 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] [2021-12-18 00:00:02,795 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-18 00:00:02,993 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 [2021-12-18 00:00:02,993 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:00:02,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:00:02,993 INFO L85 PathProgramCache]: Analyzing trace with hash -1706791329, now seen corresponding path program 1 times [2021-12-18 00:00:02,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:00:02,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072436323] [2021-12-18 00:00:02,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:00:02,994 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:00:03,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:03,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:00:03,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:03,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:00:03,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:03,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 00:00:03,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:03,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:00:03,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:03,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 00:00:03,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:03,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 00:00:03,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:03,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2021-12-18 00:00:03,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:03,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-18 00:00:03,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:03,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 00:00:03,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:03,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:00:03,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:03,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 00:00:03,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:03,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-18 00:00:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:03,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-18 00:00:03,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:03,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2021-12-18 00:00:03,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:03,164 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2021-12-18 00:00:03,164 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:00:03,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2072436323] [2021-12-18 00:00:03,164 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2072436323] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:00:03,164 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [764022717] [2021-12-18 00:00:03,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:00:03,165 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:00:03,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:00:03,166 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:00:03,167 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-18 00:00:03,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:03,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 2732 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 00:00:03,559 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:00:03,680 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2021-12-18 00:00:03,681 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:00:03,681 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [764022717] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:00:03,681 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:00:03,681 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2021-12-18 00:00:03,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [880197841] [2021-12-18 00:00:03,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:00:03,683 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 00:00:03,683 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:00:03,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 00:00:03,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 00:00:03,684 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) [2021-12-18 00:00:03,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:00:03,704 INFO L93 Difference]: Finished difference Result 454 states and 708 transitions. [2021-12-18 00:00:03,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 00:00:03,705 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 [2021-12-18 00:00:03,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:00:03,706 INFO L225 Difference]: With dead ends: 454 [2021-12-18 00:00:03,706 INFO L226 Difference]: Without dead ends: 244 [2021-12-18 00:00:03,707 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 [2021-12-18 00:00:03,708 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 [2021-12-18 00:00:03,709 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] [2021-12-18 00:00:03,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2021-12-18 00:00:03,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 240. [2021-12-18 00:00:03,722 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) [2021-12-18 00:00:03,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 240 states to 240 states and 349 transitions. [2021-12-18 00:00:03,724 INFO L78 Accepts]: Start accepts. Automaton has 240 states and 349 transitions. Word has length 124 [2021-12-18 00:00:03,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:00:03,724 INFO L470 AbstractCegarLoop]: Abstraction has 240 states and 349 transitions. [2021-12-18 00:00:03,724 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) [2021-12-18 00:00:03,724 INFO L276 IsEmpty]: Start isEmpty. Operand 240 states and 349 transitions. [2021-12-18 00:00:03,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-12-18 00:00:03,726 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:00:03,727 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] [2021-12-18 00:00:03,748 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-18 00:00:03,947 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 [2021-12-18 00:00:03,947 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:00:03,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:00:03,948 INFO L85 PathProgramCache]: Analyzing trace with hash 375207579, now seen corresponding path program 2 times [2021-12-18 00:00:03,948 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:00:03,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550612146] [2021-12-18 00:00:03,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:00:03,948 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:00:04,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:04,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:00:04,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:04,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:00:04,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:04,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 00:00:04,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:04,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:00:04,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:04,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 00:00:04,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:04,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2021-12-18 00:00:04,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:04,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 00:00:04,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:04,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2021-12-18 00:00:04,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:04,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 00:00:04,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:04,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:00:04,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:04,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 00:00:04,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:04,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2021-12-18 00:00:04,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:04,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-18 00:00:04,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:04,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-18 00:00:04,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:04,228 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-12-18 00:00:04,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:00:04,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550612146] [2021-12-18 00:00:04,229 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550612146] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:00:04,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1569842488] [2021-12-18 00:00:04,229 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 00:00:04,229 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:00:04,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:00:04,230 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:00:04,231 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-18 00:00:05,047 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 00:00:05,047 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 00:00:05,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 2744 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-18 00:00:05,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:00:05,259 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-18 00:00:05,259 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:00:05,259 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1569842488] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:00:05,259 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:00:05,259 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2021-12-18 00:00:05,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809469989] [2021-12-18 00:00:05,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:00:05,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 00:00:05,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:00:05,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 00:00:05,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-18 00:00:05,261 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) [2021-12-18 00:00:05,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:00:05,364 INFO L93 Difference]: Finished difference Result 461 states and 705 transitions. [2021-12-18 00:00:05,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 00:00:05,372 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 [2021-12-18 00:00:05,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:00:05,373 INFO L225 Difference]: With dead ends: 461 [2021-12-18 00:00:05,374 INFO L226 Difference]: Without dead ends: 255 [2021-12-18 00:00:05,375 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 [2021-12-18 00:00:05,375 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 [2021-12-18 00:00:05,375 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] [2021-12-18 00:00:05,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2021-12-18 00:00:05,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2021-12-18 00:00:05,386 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) [2021-12-18 00:00:05,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 396 transitions. [2021-12-18 00:00:05,388 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 396 transitions. Word has length 128 [2021-12-18 00:00:05,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:00:05,388 INFO L470 AbstractCegarLoop]: Abstraction has 255 states and 396 transitions. [2021-12-18 00:00:05,388 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) [2021-12-18 00:00:05,388 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 396 transitions. [2021-12-18 00:00:05,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-18 00:00:05,390 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:00:05,391 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] [2021-12-18 00:00:05,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-18 00:00:05,603 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 [2021-12-18 00:00:05,603 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:00:05,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:00:05,604 INFO L85 PathProgramCache]: Analyzing trace with hash -1231805994, now seen corresponding path program 1 times [2021-12-18 00:00:05,604 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:00:05,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1046657948] [2021-12-18 00:00:05,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:00:05,604 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:00:05,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:05,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:00:05,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:05,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:00:05,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:05,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 00:00:05,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:05,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:00:05,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:05,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 00:00:05,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:05,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:00:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:05,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:00:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:05,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 00:00:05,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:05,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:00:05,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:05,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:00:05,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:05,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-18 00:00:05,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:05,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-18 00:00:05,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:05,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 00:00:05,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:05,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-18 00:00:05,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:05,775 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2021-12-18 00:00:05,775 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:00:05,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1046657948] [2021-12-18 00:00:05,775 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1046657948] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:00:05,775 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1432291705] [2021-12-18 00:00:05,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:00:05,776 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:00:05,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:00:05,788 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:00:05,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-18 00:00:06,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:06,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 2749 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 00:00:06,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:00:06,321 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2021-12-18 00:00:06,321 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:00:06,321 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1432291705] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:00:06,321 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:00:06,322 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2021-12-18 00:00:06,322 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493854375] [2021-12-18 00:00:06,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:00:06,322 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 00:00:06,322 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:00:06,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 00:00:06,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 00:00:06,323 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) [2021-12-18 00:00:06,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:00:06,348 INFO L93 Difference]: Finished difference Result 491 states and 807 transitions. [2021-12-18 00:00:06,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 00:00:06,349 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 [2021-12-18 00:00:06,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:00:06,351 INFO L225 Difference]: With dead ends: 491 [2021-12-18 00:00:06,351 INFO L226 Difference]: Without dead ends: 270 [2021-12-18 00:00:06,354 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 [2021-12-18 00:00:06,354 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 [2021-12-18 00:00:06,355 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] [2021-12-18 00:00:06,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270 states. [2021-12-18 00:00:06,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270 to 261. [2021-12-18 00:00:06,365 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) [2021-12-18 00:00:06,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 402 transitions. [2021-12-18 00:00:06,367 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 402 transitions. Word has length 130 [2021-12-18 00:00:06,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:00:06,367 INFO L470 AbstractCegarLoop]: Abstraction has 261 states and 402 transitions. [2021-12-18 00:00:06,368 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) [2021-12-18 00:00:06,368 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 402 transitions. [2021-12-18 00:00:06,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-18 00:00:06,369 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:00:06,369 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] [2021-12-18 00:00:06,403 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-12-18 00:00:06,575 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 [2021-12-18 00:00:06,575 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:00:06,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:00:06,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1711776084, now seen corresponding path program 1 times [2021-12-18 00:00:06,576 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:00:06,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239843617] [2021-12-18 00:00:06,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:00:06,576 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:00:06,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:06,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:00:06,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:06,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:00:06,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:06,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 00:00:06,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:06,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:00:06,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:06,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 00:00:06,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:06,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:00:06,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:06,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:00:06,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:06,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 00:00:06,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:06,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:00:06,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:06,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:00:06,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:06,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-18 00:00:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:06,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-18 00:00:06,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:06,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 00:00:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:06,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-18 00:00:06,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:06,800 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-12-18 00:00:06,800 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:00:06,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239843617] [2021-12-18 00:00:06,800 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239843617] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:00:06,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1693432935] [2021-12-18 00:00:06,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:00:06,801 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:00:06,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:00:06,802 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:00:06,803 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-18 00:00:07,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:07,236 INFO L263 TraceCheckSpWp]: Trace formula consists of 2754 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-18 00:00:07,239 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:00:07,443 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2021-12-18 00:00:07,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:00:07,443 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1693432935] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:00:07,444 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:00:07,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2021-12-18 00:00:07,444 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335461173] [2021-12-18 00:00:07,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:00:07,444 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 00:00:07,444 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:00:07,444 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 00:00:07,444 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-18 00:00:07,445 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) [2021-12-18 00:00:07,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:00:07,559 INFO L93 Difference]: Finished difference Result 493 states and 813 transitions. [2021-12-18 00:00:07,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 00:00:07,559 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 [2021-12-18 00:00:07,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:00:07,561 INFO L225 Difference]: With dead ends: 493 [2021-12-18 00:00:07,561 INFO L226 Difference]: Without dead ends: 262 [2021-12-18 00:00:07,562 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 156 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2021-12-18 00:00:07,563 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 [2021-12-18 00:00:07,563 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] [2021-12-18 00:00:07,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 262 states. [2021-12-18 00:00:07,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 262 to 253. [2021-12-18 00:00:07,573 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) [2021-12-18 00:00:07,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 379 transitions. [2021-12-18 00:00:07,575 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 379 transitions. Word has length 130 [2021-12-18 00:00:07,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:00:07,575 INFO L470 AbstractCegarLoop]: Abstraction has 253 states and 379 transitions. [2021-12-18 00:00:07,576 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) [2021-12-18 00:00:07,576 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 379 transitions. [2021-12-18 00:00:07,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-18 00:00:07,577 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:00:07,577 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] [2021-12-18 00:00:07,603 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-18 00:00:07,799 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 [2021-12-18 00:00:07,799 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:00:07,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:00:07,799 INFO L85 PathProgramCache]: Analyzing trace with hash -685694446, now seen corresponding path program 1 times [2021-12-18 00:00:07,799 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:00:07,800 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812400983] [2021-12-18 00:00:07,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:00:07,800 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:00:07,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:07,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:00:07,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:07,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:00:07,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:07,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 00:00:07,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:07,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:00:07,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:07,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 00:00:07,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:07,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:00:07,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:07,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:00:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:07,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 00:00:07,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:07,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:00:07,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:07,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:00:07,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:07,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-18 00:00:07,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:07,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-18 00:00:07,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:07,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 00:00:07,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:07,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-18 00:00:07,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:07,949 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2021-12-18 00:00:07,949 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:00:07,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812400983] [2021-12-18 00:00:07,949 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812400983] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:00:07,949 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [530720634] [2021-12-18 00:00:07,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:00:07,949 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:00:07,950 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:00:07,950 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:00:07,952 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-12-18 00:00:08,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:08,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 2751 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-18 00:00:08,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:00:08,523 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2021-12-18 00:00:08,524 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:00:08,524 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [530720634] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:00:08,524 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:00:08,524 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2021-12-18 00:00:08,524 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289015396] [2021-12-18 00:00:08,524 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:00:08,524 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 00:00:08,525 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:00:08,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 00:00:08,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 00:00:08,525 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) [2021-12-18 00:00:08,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:00:08,548 INFO L93 Difference]: Finished difference Result 415 states and 619 transitions. [2021-12-18 00:00:08,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 00:00:08,549 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 [2021-12-18 00:00:08,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:00:08,550 INFO L225 Difference]: With dead ends: 415 [2021-12-18 00:00:08,550 INFO L226 Difference]: Without dead ends: 198 [2021-12-18 00:00:08,552 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 [2021-12-18 00:00:08,552 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 [2021-12-18 00:00:08,552 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] [2021-12-18 00:00:08,553 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2021-12-18 00:00:08,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 196. [2021-12-18 00:00:08,558 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) [2021-12-18 00:00:08,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 261 transitions. [2021-12-18 00:00:08,560 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 261 transitions. Word has length 130 [2021-12-18 00:00:08,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:00:08,560 INFO L470 AbstractCegarLoop]: Abstraction has 196 states and 261 transitions. [2021-12-18 00:00:08,560 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) [2021-12-18 00:00:08,560 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 261 transitions. [2021-12-18 00:00:08,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-18 00:00:08,561 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:00:08,561 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] [2021-12-18 00:00:08,585 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-12-18 00:00:08,771 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 [2021-12-18 00:00:08,772 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:00:08,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:00:08,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1702869584, now seen corresponding path program 1 times [2021-12-18 00:00:08,773 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:00:08,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771150526] [2021-12-18 00:00:08,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:00:08,773 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:00:09,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:09,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:00:09,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:09,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:00:09,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:09,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 00:00:09,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:09,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:00:09,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:09,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 00:00:09,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:09,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:00:09,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:09,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:00:09,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:09,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 00:00:09,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:09,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:00:09,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:09,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:00:09,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:09,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-18 00:00:09,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:09,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-18 00:00:09,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:09,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 00:00:09,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:09,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-18 00:00:09,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:09,499 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 34 proven. 16 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-12-18 00:00:09,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:00:09,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771150526] [2021-12-18 00:00:09,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771150526] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:00:09,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [543800035] [2021-12-18 00:00:09,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:00:09,500 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:00:09,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:00:09,501 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:00:09,502 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-12-18 00:00:09,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:09,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 2746 conjuncts, 69 conjunts are in the unsatisfiable core [2021-12-18 00:00:09,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:00:10,002 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 00:00:12,264 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:00:12,265 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 [2021-12-18 00:00:18,671 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:00:18,673 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 [2021-12-18 00:00:27,427 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 57 proven. 32 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2021-12-18 00:00:27,427 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:00:29,374 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [543800035] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:00:29,374 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 00:00:29,375 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 17] total 35 [2021-12-18 00:00:29,375 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728347360] [2021-12-18 00:00:29,375 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 00:00:29,375 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2021-12-18 00:00:29,375 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:00:29,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2021-12-18 00:00:29,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1597, Unknown=2, NotChecked=0, Total=1722 [2021-12-18 00:00:29,376 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) [2021-12-18 00:00:33,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:00:33,588 INFO L93 Difference]: Finished difference Result 540 states and 779 transitions. [2021-12-18 00:00:33,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2021-12-18 00:00:33,588 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 130 [2021-12-18 00:00:33,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:00:33,591 INFO L225 Difference]: With dead ends: 540 [2021-12-18 00:00:33,591 INFO L226 Difference]: Without dead ends: 405 [2021-12-18 00:00:33,593 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 182 SyntacticMatches, 16 SemanticMatches, 93 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2565 ImplicationChecksByTransitivity, 20.7s TimeCoverageRelationStatistics Valid=661, Invalid=8267, Unknown=2, NotChecked=0, Total=8930 [2021-12-18 00:00:33,593 INFO L933 BasicCegarLoop]: 216 mSDtfsCounter, 462 mSDsluCounter, 2446 mSDsCounter, 0 mSdLazyCounter, 4451 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 495 SdHoareTripleChecker+Valid, 2662 SdHoareTripleChecker+Invalid, 5402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 4451 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 627 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2021-12-18 00:00:33,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [495 Valid, 2662 Invalid, 5402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 4451 Invalid, 0 Unknown, 627 Unchecked, 2.4s Time] [2021-12-18 00:00:33,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 405 states. [2021-12-18 00:00:33,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 405 to 334. [2021-12-18 00:00:33,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 334 states, 223 states have (on average 1.15695067264574) internal successors, (258), 232 states have internal predecessors, (258), 82 states have call successors, (82), 25 states have call predecessors, (82), 28 states have return successors, (142), 76 states have call predecessors, (142), 81 states have call successors, (142) [2021-12-18 00:00:33,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 334 states to 334 states and 482 transitions. [2021-12-18 00:00:33,608 INFO L78 Accepts]: Start accepts. Automaton has 334 states and 482 transitions. Word has length 130 [2021-12-18 00:00:33,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:00:33,609 INFO L470 AbstractCegarLoop]: Abstraction has 334 states and 482 transitions. [2021-12-18 00:00:33,609 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2021-12-18 00:00:33,609 INFO L276 IsEmpty]: Start isEmpty. Operand 334 states and 482 transitions. [2021-12-18 00:00:33,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-18 00:00:33,611 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:00:33,611 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1] [2021-12-18 00:00:33,633 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-12-18 00:00:33,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-18 00:00:33,832 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:00:33,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:00:33,832 INFO L85 PathProgramCache]: Analyzing trace with hash -1165341996, now seen corresponding path program 2 times [2021-12-18 00:00:33,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:00:33,832 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741974245] [2021-12-18 00:00:33,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:00:33,833 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:00:33,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:33,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:00:33,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:33,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:00:33,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:33,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 00:00:33,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:33,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:00:33,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:33,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 00:00:33,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:33,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:00:33,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:33,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:00:33,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:33,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 00:00:33,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:33,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:00:33,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:33,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:00:33,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:33,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-18 00:00:34,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:34,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-18 00:00:34,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:34,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 00:00:34,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:34,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-18 00:00:34,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:34,044 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2021-12-18 00:00:34,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:00:34,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741974245] [2021-12-18 00:00:34,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741974245] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:00:34,044 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 00:00:34,044 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 00:00:34,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [114909777] [2021-12-18 00:00:34,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:00:34,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 00:00:34,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:00:34,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 00:00:34,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-18 00:00:34,046 INFO L87 Difference]: Start difference. First operand 334 states and 482 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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) [2021-12-18 00:00:34,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:00:34,325 INFO L93 Difference]: Finished difference Result 567 states and 816 transitions. [2021-12-18 00:00:34,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 00:00:34,326 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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 130 [2021-12-18 00:00:34,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:00:34,328 INFO L225 Difference]: With dead ends: 567 [2021-12-18 00:00:34,328 INFO L226 Difference]: Without dead ends: 332 [2021-12-18 00:00:34,330 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-12-18 00:00:34,331 INFO L933 BasicCegarLoop]: 155 mSDtfsCounter, 96 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 223 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 376 SdHoareTripleChecker+Invalid, 260 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 223 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 00:00:34,331 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 376 Invalid, 260 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 223 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 00:00:34,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2021-12-18 00:00:34,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 332. [2021-12-18 00:00:34,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 332 states, 221 states have (on average 1.1538461538461537) internal successors, (255), 230 states have internal predecessors, (255), 82 states have call successors, (82), 25 states have call predecessors, (82), 28 states have return successors, (142), 76 states have call predecessors, (142), 81 states have call successors, (142) [2021-12-18 00:00:34,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 332 states to 332 states and 479 transitions. [2021-12-18 00:00:34,349 INFO L78 Accepts]: Start accepts. Automaton has 332 states and 479 transitions. Word has length 130 [2021-12-18 00:00:34,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:00:34,350 INFO L470 AbstractCegarLoop]: Abstraction has 332 states and 479 transitions. [2021-12-18 00:00:34,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 5 states have internal predecessors, (67), 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) [2021-12-18 00:00:34,351 INFO L276 IsEmpty]: Start isEmpty. Operand 332 states and 479 transitions. [2021-12-18 00:00:34,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-18 00:00:34,352 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:00:34,353 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:00:34,353 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-18 00:00:34,353 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:00:34,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:00:34,353 INFO L85 PathProgramCache]: Analyzing trace with hash -1423507434, now seen corresponding path program 1 times [2021-12-18 00:00:34,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:00:34,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127339050] [2021-12-18 00:00:34,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:00:34,354 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:00:34,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:34,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:00:34,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:34,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:00:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:34,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 00:00:34,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:34,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:00:34,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:34,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 00:00:34,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:34,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:00:34,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:34,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:00:34,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:34,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 00:00:34,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:34,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:00:34,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:34,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:00:34,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:34,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-18 00:00:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:34,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-18 00:00:34,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:34,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 00:00:34,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:34,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-18 00:00:34,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:34,706 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 44 proven. 8 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-12-18 00:00:34,706 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:00:34,706 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127339050] [2021-12-18 00:00:34,707 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127339050] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:00:34,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960787405] [2021-12-18 00:00:34,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:00:34,707 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:00:34,707 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:00:34,708 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:00:34,709 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-12-18 00:00:35,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:35,106 INFO L263 TraceCheckSpWp]: Trace formula consists of 2743 conjuncts, 50 conjunts are in the unsatisfiable core [2021-12-18 00:00:35,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:00:35,219 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 00:00:35,408 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 20 treesize of output 19 [2021-12-18 00:00:35,683 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2021-12-18 00:00:35,683 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:00:35,683 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960787405] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:00:35,683 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:00:35,683 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [12] total 23 [2021-12-18 00:00:35,683 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1395490605] [2021-12-18 00:00:35,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:00:35,684 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-18 00:00:35,684 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:00:35,684 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-18 00:00:35,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2021-12-18 00:00:35,685 INFO L87 Difference]: Start difference. First operand 332 states and 479 transitions. Second operand has 13 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 6 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2021-12-18 00:00:35,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:00:35,880 INFO L93 Difference]: Finished difference Result 627 states and 863 transitions. [2021-12-18 00:00:35,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-18 00:00:35,881 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 6 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 130 [2021-12-18 00:00:35,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:00:35,883 INFO L225 Difference]: With dead ends: 627 [2021-12-18 00:00:35,883 INFO L226 Difference]: Without dead ends: 429 [2021-12-18 00:00:35,884 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 143 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2021-12-18 00:00:35,884 INFO L933 BasicCegarLoop]: 211 mSDtfsCounter, 41 mSDsluCounter, 1874 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 2085 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 94 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 00:00:35,884 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 2085 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 143 Invalid, 0 Unknown, 94 Unchecked, 0.2s Time] [2021-12-18 00:00:35,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2021-12-18 00:00:35,896 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 370. [2021-12-18 00:00:35,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 254 states have (on average 1.1535433070866141) internal successors, (293), 264 states have internal predecessors, (293), 84 states have call successors, (84), 27 states have call predecessors, (84), 31 states have return successors, (147), 78 states have call predecessors, (147), 83 states have call successors, (147) [2021-12-18 00:00:35,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 524 transitions. [2021-12-18 00:00:35,898 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 524 transitions. Word has length 130 [2021-12-18 00:00:35,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:00:35,899 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 524 transitions. [2021-12-18 00:00:35,899 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 7.0) internal successors, (84), 12 states have internal predecessors, (84), 6 states have call successors, (16), 3 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2021-12-18 00:00:35,899 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 524 transitions. [2021-12-18 00:00:35,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2021-12-18 00:00:35,901 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:00:35,901 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:00:35,935 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2021-12-18 00:00:36,121 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-12-18 00:00:36,121 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:00:36,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:00:36,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1452007724, now seen corresponding path program 1 times [2021-12-18 00:00:36,121 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:00:36,121 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045226309] [2021-12-18 00:00:36,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:00:36,122 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:00:36,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:36,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:00:36,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:36,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:00:36,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:36,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 00:00:36,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:36,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:00:36,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:36,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 00:00:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:36,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:00:36,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:36,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:00:36,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:36,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 00:00:36,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:36,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:00:36,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:36,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:00:36,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:36,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-18 00:00:36,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:36,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-18 00:00:36,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:36,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 00:00:36,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:36,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2021-12-18 00:00:36,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:36,588 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 2 proven. 50 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2021-12-18 00:00:36,588 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:00:36,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045226309] [2021-12-18 00:00:36,589 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045226309] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:00:36,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013279013] [2021-12-18 00:00:36,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:00:36,589 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:00:36,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:00:36,590 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:00:36,591 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-12-18 00:00:37,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:37,030 INFO L263 TraceCheckSpWp]: Trace formula consists of 2748 conjuncts, 52 conjunts are in the unsatisfiable core [2021-12-18 00:00:37,032 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:00:37,192 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 00:00:37,661 INFO L354 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2021-12-18 00:00:37,662 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 11 [2021-12-18 00:00:37,665 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-18 00:00:37,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 13 [2021-12-18 00:00:37,789 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2021-12-18 00:00:37,789 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:00:37,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013279013] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:00:37,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:00:37,790 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [16] total 29 [2021-12-18 00:00:37,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [660536250] [2021-12-18 00:00:37,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:00:37,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-12-18 00:00:37,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:00:37,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-12-18 00:00:37,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=723, Unknown=0, NotChecked=0, Total=812 [2021-12-18 00:00:37,791 INFO L87 Difference]: Start difference. First operand 370 states and 524 transitions. Second operand has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 11 states have internal predecessors, (74), 6 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2021-12-18 00:00:38,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:00:38,018 INFO L93 Difference]: Finished difference Result 648 states and 891 transitions. [2021-12-18 00:00:38,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2021-12-18 00:00:38,018 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 11 states have internal predecessors, (74), 6 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 130 [2021-12-18 00:00:38,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:00:38,020 INFO L225 Difference]: With dead ends: 648 [2021-12-18 00:00:38,020 INFO L226 Difference]: Without dead ends: 420 [2021-12-18 00:00:38,021 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 213 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=115, Invalid=877, Unknown=0, NotChecked=0, Total=992 [2021-12-18 00:00:38,022 INFO L933 BasicCegarLoop]: 213 mSDtfsCounter, 83 mSDsluCounter, 1006 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 379 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 208 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 00:00:38,022 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [114 Valid, 1219 Invalid, 379 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 168 Invalid, 0 Unknown, 208 Unchecked, 0.1s Time] [2021-12-18 00:00:38,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 420 states. [2021-12-18 00:00:38,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 420 to 372. [2021-12-18 00:00:38,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 263 states have (on average 1.144486692015209) internal successors, (301), 273 states have internal predecessors, (301), 75 states have call successors, (75), 28 states have call predecessors, (75), 33 states have return successors, (126), 70 states have call predecessors, (126), 74 states have call successors, (126) [2021-12-18 00:00:38,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 502 transitions. [2021-12-18 00:00:38,043 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 502 transitions. Word has length 130 [2021-12-18 00:00:38,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:00:38,044 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 502 transitions. [2021-12-18 00:00:38,045 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.933333333333334) internal successors, (74), 11 states have internal predecessors, (74), 6 states have call successors, (16), 4 states have call predecessors, (16), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2021-12-18 00:00:38,045 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 502 transitions. [2021-12-18 00:00:38,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2021-12-18 00:00:38,047 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:00:38,047 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:00:38,070 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2021-12-18 00:00:38,261 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-12-18 00:00:38,261 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:00:38,262 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:00:38,262 INFO L85 PathProgramCache]: Analyzing trace with hash -1137008240, now seen corresponding path program 3 times [2021-12-18 00:00:38,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:00:38,262 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1317163871] [2021-12-18 00:00:38,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:00:38,262 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:00:38,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:38,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:00:38,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:38,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:00:38,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:38,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 00:00:38,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:38,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:00:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:38,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 00:00:38,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:38,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:00:38,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:38,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:00:38,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:38,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-12-18 00:00:38,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:38,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2021-12-18 00:00:38,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:38,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:00:38,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:38,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 00:00:38,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:38,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-12-18 00:00:38,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:38,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-18 00:00:38,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:38,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 00:00:38,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:38,493 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 14 proven. 15 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2021-12-18 00:00:38,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:00:38,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1317163871] [2021-12-18 00:00:38,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1317163871] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:00:38,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228054832] [2021-12-18 00:00:38,494 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-18 00:00:38,494 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:00:38,494 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:00:38,495 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:00:38,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-12-18 00:00:39,272 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2021-12-18 00:00:39,272 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 00:00:39,281 INFO L263 TraceCheckSpWp]: Trace formula consists of 2457 conjuncts, 26 conjunts are in the unsatisfiable core [2021-12-18 00:00:39,284 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:00:39,846 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 85 proven. 8 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2021-12-18 00:00:39,847 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:00:40,100 INFO L354 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2021-12-18 00:00:40,100 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2021-12-18 00:00:40,206 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 48 proven. 10 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2021-12-18 00:00:40,206 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228054832] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 00:00:40,206 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 00:00:40,207 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 9] total 23 [2021-12-18 00:00:40,207 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922117552] [2021-12-18 00:00:40,207 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 00:00:40,207 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-18 00:00:40,207 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:00:40,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-18 00:00:40,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2021-12-18 00:00:40,208 INFO L87 Difference]: Start difference. First operand 372 states and 502 transitions. Second operand has 23 states, 22 states have (on average 5.318181818181818) internal successors, (117), 21 states have internal predecessors, (117), 4 states have call successors, (28), 4 states have call predecessors, (28), 7 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2021-12-18 00:00:41,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:00:41,412 INFO L93 Difference]: Finished difference Result 620 states and 811 transitions. [2021-12-18 00:00:41,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2021-12-18 00:00:41,412 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 5.318181818181818) internal successors, (117), 21 states have internal predecessors, (117), 4 states have call successors, (28), 4 states have call predecessors, (28), 7 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 134 [2021-12-18 00:00:41,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:00:41,414 INFO L225 Difference]: With dead ends: 620 [2021-12-18 00:00:41,414 INFO L226 Difference]: Without dead ends: 359 [2021-12-18 00:00:41,416 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 279 SyntacticMatches, 7 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 303 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=300, Invalid=1592, Unknown=0, NotChecked=0, Total=1892 [2021-12-18 00:00:41,416 INFO L933 BasicCegarLoop]: 150 mSDtfsCounter, 224 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 64 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 244 SdHoareTripleChecker+Valid, 1169 SdHoareTripleChecker+Invalid, 1562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 64 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 169 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-18 00:00:41,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [244 Valid, 1169 Invalid, 1562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [64 Valid, 1329 Invalid, 0 Unknown, 169 Unchecked, 0.7s Time] [2021-12-18 00:00:41,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2021-12-18 00:00:41,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 358. [2021-12-18 00:00:41,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 257 states have (on average 1.1206225680933852) internal successors, (288), 263 states have internal predecessors, (288), 66 states have call successors, (66), 31 states have call predecessors, (66), 34 states have return successors, (92), 63 states have call predecessors, (92), 65 states have call successors, (92) [2021-12-18 00:00:41,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 446 transitions. [2021-12-18 00:00:41,446 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 446 transitions. Word has length 134 [2021-12-18 00:00:41,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:00:41,447 INFO L470 AbstractCegarLoop]: Abstraction has 358 states and 446 transitions. [2021-12-18 00:00:41,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 5.318181818181818) internal successors, (117), 21 states have internal predecessors, (117), 4 states have call successors, (28), 4 states have call predecessors, (28), 7 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2021-12-18 00:00:41,447 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 446 transitions. [2021-12-18 00:00:41,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2021-12-18 00:00:41,448 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:00:41,449 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:00:41,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-12-18 00:00:41,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:00:41,673 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:00:41,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:00:41,673 INFO L85 PathProgramCache]: Analyzing trace with hash -175907053, now seen corresponding path program 1 times [2021-12-18 00:00:41,673 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:00:41,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875651286] [2021-12-18 00:00:41,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:00:41,673 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:00:41,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:41,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:00:41,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:41,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:00:41,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:41,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 00:00:41,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:41,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:00:41,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:41,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 00:00:41,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:41,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:00:41,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:41,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:00:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:41,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 00:00:41,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:41,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-18 00:00:41,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:41,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 00:00:41,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:41,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:00:41,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:41,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 00:00:41,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:41,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2021-12-18 00:00:41,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:41,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 00:00:41,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:41,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-18 00:00:41,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:41,900 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 24 proven. 8 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-12-18 00:00:41,900 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:00:41,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875651286] [2021-12-18 00:00:41,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875651286] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:00:41,900 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175699898] [2021-12-18 00:00:41,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:00:41,900 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:00:41,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:00:41,901 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:00:41,902 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-12-18 00:00:42,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:42,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 2783 conjuncts, 29 conjunts are in the unsatisfiable core [2021-12-18 00:00:42,340 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:00:42,589 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-18 00:00:42,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 12 [2021-12-18 00:00:42,703 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 97 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-18 00:00:42,703 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:00:42,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175699898] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:00:42,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:00:42,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2021-12-18 00:00:42,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658324554] [2021-12-18 00:00:42,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:00:42,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 00:00:42,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:00:42,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 00:00:42,704 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2021-12-18 00:00:42,705 INFO L87 Difference]: Start difference. First operand 358 states and 446 transitions. Second operand has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 8 states have internal predecessors, (75), 4 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-18 00:00:42,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:00:42,988 INFO L93 Difference]: Finished difference Result 657 states and 852 transitions. [2021-12-18 00:00:42,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-18 00:00:42,988 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 8 states have internal predecessors, (75), 4 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 141 [2021-12-18 00:00:42,988 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:00:42,991 INFO L225 Difference]: With dead ends: 657 [2021-12-18 00:00:42,991 INFO L226 Difference]: Without dead ends: 390 [2021-12-18 00:00:42,993 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 162 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=59, Invalid=403, Unknown=0, NotChecked=0, Total=462 [2021-12-18 00:00:42,993 INFO L933 BasicCegarLoop]: 166 mSDtfsCounter, 92 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 218 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 1004 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 59 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 00:00:42,994 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 1004 Invalid, 306 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 218 Invalid, 0 Unknown, 59 Unchecked, 0.2s Time] [2021-12-18 00:00:42,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2021-12-18 00:00:43,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 364. [2021-12-18 00:00:43,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 262 states have (on average 1.1145038167938932) internal successors, (292), 269 states have internal predecessors, (292), 66 states have call successors, (66), 31 states have call predecessors, (66), 35 states have return successors, (101), 63 states have call predecessors, (101), 65 states have call successors, (101) [2021-12-18 00:00:43,013 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 459 transitions. [2021-12-18 00:00:43,013 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 459 transitions. Word has length 141 [2021-12-18 00:00:43,014 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:00:43,014 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 459 transitions. [2021-12-18 00:00:43,014 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.333333333333334) internal successors, (75), 8 states have internal predecessors, (75), 4 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2021-12-18 00:00:43,014 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 459 transitions. [2021-12-18 00:00:43,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2021-12-18 00:00:43,015 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:00:43,015 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 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] [2021-12-18 00:00:43,047 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-12-18 00:00:43,236 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:00:43,236 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:00:43,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:00:43,236 INFO L85 PathProgramCache]: Analyzing trace with hash -532115629, now seen corresponding path program 1 times [2021-12-18 00:00:43,236 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:00:43,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811687631] [2021-12-18 00:00:43,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:00:43,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:00:43,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:43,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:00:43,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:43,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:00:43,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:43,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 00:00:43,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:43,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:00:43,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:43,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 00:00:43,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:43,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:00:43,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:43,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:00:43,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:43,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:00:43,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:43,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:00:43,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:43,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:00:43,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:43,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-18 00:00:43,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:43,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2021-12-18 00:00:43,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:43,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2021-12-18 00:00:43,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:43,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-18 00:00:43,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:43,434 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2021-12-18 00:00:43,434 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:00:43,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [811687631] [2021-12-18 00:00:43,434 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [811687631] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:00:43,434 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648495964] [2021-12-18 00:00:43,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:00:43,435 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:00:43,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:00:43,435 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:00:43,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2021-12-18 00:00:43,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:43,862 INFO L263 TraceCheckSpWp]: Trace formula consists of 2751 conjuncts, 24 conjunts are in the unsatisfiable core [2021-12-18 00:00:43,866 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:00:44,047 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 87 proven. 0 refuted. 0 times theorem prover too weak. 65 trivial. 0 not checked. [2021-12-18 00:00:44,047 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 00:00:44,047 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1648495964] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:00:44,047 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 00:00:44,047 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2021-12-18 00:00:44,047 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1820855900] [2021-12-18 00:00:44,047 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:00:44,048 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 00:00:44,048 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:00:44,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 00:00:44,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-18 00:00:44,048 INFO L87 Difference]: Start difference. First operand 364 states and 459 transitions. Second operand has 9 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2021-12-18 00:00:44,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:00:44,153 INFO L93 Difference]: Finished difference Result 570 states and 719 transitions. [2021-12-18 00:00:44,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 00:00:44,154 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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 140 [2021-12-18 00:00:44,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:00:44,156 INFO L225 Difference]: With dead ends: 570 [2021-12-18 00:00:44,156 INFO L226 Difference]: Without dead ends: 315 [2021-12-18 00:00:44,157 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 165 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2021-12-18 00:00:44,158 INFO L933 BasicCegarLoop]: 170 mSDtfsCounter, 12 mSDsluCounter, 1136 mSDsCounter, 0 mSdLazyCounter, 143 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1306 SdHoareTripleChecker+Invalid, 145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 143 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 00:00:44,158 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 1306 Invalid, 145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 143 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 00:00:44,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2021-12-18 00:00:44,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 305. [2021-12-18 00:00:44,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 215 states have (on average 1.1069767441860465) internal successors, (238), 220 states have internal predecessors, (238), 59 states have call successors, (59), 27 states have call predecessors, (59), 30 states have return successors, (86), 57 states have call predecessors, (86), 58 states have call successors, (86) [2021-12-18 00:00:44,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 383 transitions. [2021-12-18 00:00:44,174 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 383 transitions. Word has length 140 [2021-12-18 00:00:44,174 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:00:44,175 INFO L470 AbstractCegarLoop]: Abstraction has 305 states and 383 transitions. [2021-12-18 00:00:44,175 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.5) internal successors, (76), 8 states have internal predecessors, (76), 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) [2021-12-18 00:00:44,175 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 383 transitions. [2021-12-18 00:00:44,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2021-12-18 00:00:44,176 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:00:44,176 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:00:44,202 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2021-12-18 00:00:44,390 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:00:44,390 INFO L402 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:00:44,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:00:44,390 INFO L85 PathProgramCache]: Analyzing trace with hash -652873890, now seen corresponding path program 1 times [2021-12-18 00:00:44,390 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:00:44,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1824628764] [2021-12-18 00:00:44,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:00:44,391 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:00:44,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:44,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:00:44,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:44,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:00:44,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:44,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 00:00:44,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:44,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:00:44,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:44,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 00:00:44,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:44,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:00:44,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:44,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:00:44,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:44,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:00:44,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:44,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:00:44,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:44,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:00:44,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:44,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 00:00:44,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:44,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:00:44,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:44,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 00:00:44,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:44,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 00:00:44,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:44,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 00:00:44,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:44,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 00:00:44,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:44,577 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2021-12-18 00:00:44,578 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:00:44,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1824628764] [2021-12-18 00:00:44,578 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1824628764] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:00:44,578 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 00:00:44,578 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 00:00:44,578 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700342087] [2021-12-18 00:00:44,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:00:44,579 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 00:00:44,579 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:00:44,579 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 00:00:44,579 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-12-18 00:00:44,580 INFO L87 Difference]: Start difference. First operand 305 states and 383 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2021-12-18 00:00:44,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:00:44,969 INFO L93 Difference]: Finished difference Result 393 states and 493 transitions. [2021-12-18 00:00:44,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 00:00:44,970 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 143 [2021-12-18 00:00:44,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:00:44,971 INFO L225 Difference]: With dead ends: 393 [2021-12-18 00:00:44,971 INFO L226 Difference]: Without dead ends: 333 [2021-12-18 00:00:44,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-12-18 00:00:44,972 INFO L933 BasicCegarLoop]: 148 mSDtfsCounter, 142 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 483 mSolverCounterSat, 114 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 114 IncrementalHoareTripleChecker+Valid, 483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 00:00:44,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [150 Valid, 559 Invalid, 597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [114 Valid, 483 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-18 00:00:44,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2021-12-18 00:00:44,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 310. [2021-12-18 00:00:44,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 310 states, 219 states have (on average 1.1050228310502284) internal successors, (242), 224 states have internal predecessors, (242), 59 states have call successors, (59), 27 states have call predecessors, (59), 31 states have return successors, (88), 58 states have call predecessors, (88), 58 states have call successors, (88) [2021-12-18 00:00:45,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 310 states to 310 states and 389 transitions. [2021-12-18 00:00:45,000 INFO L78 Accepts]: Start accepts. Automaton has 310 states and 389 transitions. Word has length 143 [2021-12-18 00:00:45,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:00:45,000 INFO L470 AbstractCegarLoop]: Abstraction has 310 states and 389 transitions. [2021-12-18 00:00:45,000 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 2 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2021-12-18 00:00:45,001 INFO L276 IsEmpty]: Start isEmpty. Operand 310 states and 389 transitions. [2021-12-18 00:00:45,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-18 00:00:45,002 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:00:45,002 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2021-12-18 00:00:45,002 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2021-12-18 00:00:45,002 INFO L402 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:00:45,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:00:45,002 INFO L85 PathProgramCache]: Analyzing trace with hash 768464440, now seen corresponding path program 2 times [2021-12-18 00:00:45,003 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:00:45,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4785364] [2021-12-18 00:00:45,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:00:45,003 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:00:45,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:45,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:00:45,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:45,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:00:45,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:45,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 00:00:45,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:45,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:00:45,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:45,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 00:00:45,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:45,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:00:45,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:45,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:00:45,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:45,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:00:45,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:45,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:00:45,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:45,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:00:45,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:45,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-18 00:00:45,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:45,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-18 00:00:45,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:45,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 00:00:45,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:45,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 00:00:45,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:45,299 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 32 proven. 14 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-12-18 00:00:45,299 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:00:45,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4785364] [2021-12-18 00:00:45,299 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4785364] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:00:45,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741628906] [2021-12-18 00:00:45,299 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 00:00:45,299 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:00:45,300 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:00:45,300 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:00:45,301 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-12-18 00:00:46,091 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 00:00:46,092 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 00:00:46,103 INFO L263 TraceCheckSpWp]: Trace formula consists of 2756 conjuncts, 101 conjunts are in the unsatisfiable core [2021-12-18 00:00:46,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:00:46,240 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 00:00:46,692 INFO L354 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2021-12-18 00:00:46,693 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 12 [2021-12-18 00:00:46,696 INFO L354 Elim1Store]: treesize reduction 15, result has 6.3 percent of original size [2021-12-18 00:00:46,697 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 35 treesize of output 11 [2021-12-18 00:00:47,584 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 55 proven. 92 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-12-18 00:00:47,585 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:00:48,100 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-12-18 00:00:48,101 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 1 [2021-12-18 00:00:48,284 INFO L354 Elim1Store]: treesize reduction 18, result has 48.6 percent of original size [2021-12-18 00:00:48,284 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 39 treesize of output 35 [2021-12-18 00:00:48,508 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 60 proven. 14 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-12-18 00:00:48,508 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741628906] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 00:00:48,508 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 00:00:48,508 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 29, 12] total 47 [2021-12-18 00:00:48,509 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1017673662] [2021-12-18 00:00:48,509 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 00:00:48,509 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2021-12-18 00:00:48,509 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:00:48,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2021-12-18 00:00:48,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=1975, Unknown=0, NotChecked=0, Total=2162 [2021-12-18 00:00:48,510 INFO L87 Difference]: Start difference. First operand 310 states and 389 transitions. Second operand has 47 states, 45 states have (on average 3.8222222222222224) internal successors, (172), 41 states have internal predecessors, (172), 13 states have call successors, (38), 9 states have call predecessors, (38), 10 states have return successors, (31), 11 states have call predecessors, (31), 13 states have call successors, (31) [2021-12-18 00:00:51,685 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:00:51,685 INFO L93 Difference]: Finished difference Result 582 states and 756 transitions. [2021-12-18 00:00:51,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2021-12-18 00:00:51,686 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 45 states have (on average 3.8222222222222224) internal successors, (172), 41 states have internal predecessors, (172), 13 states have call successors, (38), 9 states have call predecessors, (38), 10 states have return successors, (31), 11 states have call predecessors, (31), 13 states have call successors, (31) Word has length 142 [2021-12-18 00:00:51,686 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:00:51,688 INFO L225 Difference]: With dead ends: 582 [2021-12-18 00:00:51,688 INFO L226 Difference]: Without dead ends: 443 [2021-12-18 00:00:51,689 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 369 GetRequests, 284 SyntacticMatches, 8 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1802 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=535, Invalid=5627, Unknown=0, NotChecked=0, Total=6162 [2021-12-18 00:00:51,690 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 501 mSDsluCounter, 2250 mSDsCounter, 0 mSdLazyCounter, 3762 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 508 SdHoareTripleChecker+Valid, 2441 SdHoareTripleChecker+Invalid, 4988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 3762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 811 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2021-12-18 00:00:51,690 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [508 Valid, 2441 Invalid, 4988 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 3762 Invalid, 0 Unknown, 811 Unchecked, 2.2s Time] [2021-12-18 00:00:51,691 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 443 states. [2021-12-18 00:00:51,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 443 to 382. [2021-12-18 00:00:51,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 382 states, 267 states have (on average 1.104868913857678) internal successors, (295), 273 states have internal predecessors, (295), 75 states have call successors, (75), 35 states have call predecessors, (75), 39 states have return successors, (112), 73 states have call predecessors, (112), 74 states have call successors, (112) [2021-12-18 00:00:51,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 382 states to 382 states and 482 transitions. [2021-12-18 00:00:51,710 INFO L78 Accepts]: Start accepts. Automaton has 382 states and 482 transitions. Word has length 142 [2021-12-18 00:00:51,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:00:51,710 INFO L470 AbstractCegarLoop]: Abstraction has 382 states and 482 transitions. [2021-12-18 00:00:51,710 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 45 states have (on average 3.8222222222222224) internal successors, (172), 41 states have internal predecessors, (172), 13 states have call successors, (38), 9 states have call predecessors, (38), 10 states have return successors, (31), 11 states have call predecessors, (31), 13 states have call successors, (31) [2021-12-18 00:00:51,711 INFO L276 IsEmpty]: Start isEmpty. Operand 382 states and 482 transitions. [2021-12-18 00:00:51,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2021-12-18 00:00:51,712 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:00:51,712 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:00:51,735 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-12-18 00:00:51,924 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:00:51,924 INFO L402 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:00:51,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:00:51,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1192111162, now seen corresponding path program 1 times [2021-12-18 00:00:51,925 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:00:51,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958202883] [2021-12-18 00:00:51,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:00:51,925 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:00:52,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:52,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:00:52,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:52,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:00:52,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:52,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 00:00:52,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:52,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:00:52,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:52,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 00:00:52,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:52,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:00:52,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:52,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:00:52,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:52,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:00:52,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:52,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:00:52,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:52,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:00:52,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:52,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-18 00:00:52,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:52,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-18 00:00:52,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:52,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 00:00:52,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:52,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 00:00:52,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:52,444 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2021-12-18 00:00:52,444 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:00:52,444 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958202883] [2021-12-18 00:00:52,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958202883] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:00:52,445 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [669038839] [2021-12-18 00:00:52,445 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:00:52,445 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:00:52,445 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:00:52,446 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:00:52,448 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-12-18 00:00:52,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:00:52,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 2761 conjuncts, 92 conjunts are in the unsatisfiable core [2021-12-18 00:00:52,852 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:00:52,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 00:00:53,181 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-12-18 00:00:53,181 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 30 [2021-12-18 00:00:53,305 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-12-18 00:00:53,305 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 33 treesize of output 32 [2021-12-18 00:01:00,490 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 81 proven. 49 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2021-12-18 00:01:00,490 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:01:01,521 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 60 proven. 14 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2021-12-18 00:01:01,521 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [669038839] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 00:01:01,521 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 00:01:01,521 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 25, 13] total 51 [2021-12-18 00:01:01,521 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1360713979] [2021-12-18 00:01:01,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 00:01:01,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2021-12-18 00:01:01,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:01:01,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2021-12-18 00:01:01,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=182, Invalid=2367, Unknown=1, NotChecked=0, Total=2550 [2021-12-18 00:01:01,523 INFO L87 Difference]: Start difference. First operand 382 states and 482 transitions. Second operand has 51 states, 47 states have (on average 3.6382978723404253) internal successors, (171), 48 states have internal predecessors, (171), 18 states have call successors, (44), 7 states have call predecessors, (44), 9 states have return successors, (39), 14 states have call predecessors, (39), 16 states have call successors, (39) [2021-12-18 00:01:08,124 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:01:08,124 INFO L93 Difference]: Finished difference Result 763 states and 982 transitions. [2021-12-18 00:01:08,125 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2021-12-18 00:01:08,125 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 47 states have (on average 3.6382978723404253) internal successors, (171), 48 states have internal predecessors, (171), 18 states have call successors, (44), 7 states have call predecessors, (44), 9 states have return successors, (39), 14 states have call predecessors, (39), 16 states have call successors, (39) Word has length 142 [2021-12-18 00:01:08,125 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:01:08,127 INFO L225 Difference]: With dead ends: 763 [2021-12-18 00:01:08,127 INFO L226 Difference]: Without dead ends: 519 [2021-12-18 00:01:08,130 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 413 GetRequests, 289 SyntacticMatches, 14 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3360 ImplicationChecksByTransitivity, 10.8s TimeCoverageRelationStatistics Valid=1331, Invalid=11100, Unknown=1, NotChecked=0, Total=12432 [2021-12-18 00:01:08,130 INFO L933 BasicCegarLoop]: 188 mSDtfsCounter, 504 mSDsluCounter, 2692 mSDsCounter, 0 mSdLazyCounter, 5482 mSolverCounterSat, 382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 510 SdHoareTripleChecker+Valid, 2880 SdHoareTripleChecker+Invalid, 7309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 382 IncrementalHoareTripleChecker+Valid, 5482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1445 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2021-12-18 00:01:08,130 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [510 Valid, 2880 Invalid, 7309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [382 Valid, 5482 Invalid, 0 Unknown, 1445 Unchecked, 3.4s Time] [2021-12-18 00:01:08,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 519 states. [2021-12-18 00:01:08,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 519 to 439. [2021-12-18 00:01:08,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 305 states have (on average 1.098360655737705) internal successors, (335), 310 states have internal predecessors, (335), 90 states have call successors, (90), 40 states have call predecessors, (90), 43 states have return successors, (127), 88 states have call predecessors, (127), 89 states have call successors, (127) [2021-12-18 00:01:08,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 552 transitions. [2021-12-18 00:01:08,152 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 552 transitions. Word has length 142 [2021-12-18 00:01:08,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:01:08,152 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 552 transitions. [2021-12-18 00:01:08,152 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 47 states have (on average 3.6382978723404253) internal successors, (171), 48 states have internal predecessors, (171), 18 states have call successors, (44), 7 states have call predecessors, (44), 9 states have return successors, (39), 14 states have call predecessors, (39), 16 states have call successors, (39) [2021-12-18 00:01:08,152 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 552 transitions. [2021-12-18 00:01:08,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-18 00:01:08,154 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:01:08,154 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:01:08,175 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-12-18 00:01:08,359 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:01:08,359 INFO L402 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:01:08,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:01:08,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1384608829, now seen corresponding path program 1 times [2021-12-18 00:01:08,360 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:01:08,360 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1706827519] [2021-12-18 00:01:08,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:01:08,360 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:01:08,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:08,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:01:08,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:08,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:01:08,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:08,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 00:01:08,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:08,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:01:08,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:08,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 00:01:08,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:08,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:01:08,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:08,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:01:08,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:08,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:01:08,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:08,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:01:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:08,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:01:08,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:08,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 00:01:08,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:08,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:01:08,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:08,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 00:01:08,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:08,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 00:01:08,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:08,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 00:01:08,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:08,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 00:01:08,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:08,624 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 2 proven. 36 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2021-12-18 00:01:08,624 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:01:08,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1706827519] [2021-12-18 00:01:08,624 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1706827519] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:01:08,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [731907354] [2021-12-18 00:01:08,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:01:08,625 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:01:08,625 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:01:08,626 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:01:08,629 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2021-12-18 00:01:09,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:09,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 2796 conjuncts, 25 conjunts are in the unsatisfiable core [2021-12-18 00:01:09,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:01:09,560 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 8 proven. 75 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2021-12-18 00:01:09,560 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:01:10,076 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 117 trivial. 0 not checked. [2021-12-18 00:01:10,077 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [731907354] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 00:01:10,077 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 00:01:10,077 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 16, 11] total 33 [2021-12-18 00:01:10,077 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180309836] [2021-12-18 00:01:10,077 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 00:01:10,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2021-12-18 00:01:10,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:01:10,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2021-12-18 00:01:10,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=948, Unknown=0, NotChecked=0, Total=1056 [2021-12-18 00:01:10,078 INFO L87 Difference]: Start difference. First operand 439 states and 552 transitions. Second operand has 33 states, 31 states have (on average 4.838709677419355) internal successors, (150), 26 states have internal predecessors, (150), 13 states have call successors, (39), 6 states have call predecessors, (39), 6 states have return successors, (35), 11 states have call predecessors, (35), 11 states have call successors, (35) [2021-12-18 00:01:11,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:01:11,825 INFO L93 Difference]: Finished difference Result 466 states and 585 transitions. [2021-12-18 00:01:11,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-12-18 00:01:11,826 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 4.838709677419355) internal successors, (150), 26 states have internal predecessors, (150), 13 states have call successors, (39), 6 states have call predecessors, (39), 6 states have return successors, (35), 11 states have call predecessors, (35), 11 states have call successors, (35) Word has length 144 [2021-12-18 00:01:11,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:01:11,828 INFO L225 Difference]: With dead ends: 466 [2021-12-18 00:01:11,828 INFO L226 Difference]: Without dead ends: 464 [2021-12-18 00:01:11,828 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 353 GetRequests, 300 SyntacticMatches, 1 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 584 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=371, Invalid=2491, Unknown=0, NotChecked=0, Total=2862 [2021-12-18 00:01:11,829 INFO L933 BasicCegarLoop]: 105 mSDtfsCounter, 411 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 2837 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 411 SdHoareTripleChecker+Valid, 856 SdHoareTripleChecker+Invalid, 3168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 2837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-18 00:01:11,829 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [411 Valid, 856 Invalid, 3168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 2837 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-18 00:01:11,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 464 states. [2021-12-18 00:01:11,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 464 to 443. [2021-12-18 00:01:11,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 443 states, 308 states have (on average 1.0974025974025974) internal successors, (338), 313 states have internal predecessors, (338), 90 states have call successors, (90), 41 states have call predecessors, (90), 44 states have return successors, (127), 88 states have call predecessors, (127), 89 states have call successors, (127) [2021-12-18 00:01:11,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 443 states to 443 states and 555 transitions. [2021-12-18 00:01:11,846 INFO L78 Accepts]: Start accepts. Automaton has 443 states and 555 transitions. Word has length 144 [2021-12-18 00:01:11,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:01:11,846 INFO L470 AbstractCegarLoop]: Abstraction has 443 states and 555 transitions. [2021-12-18 00:01:11,847 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 4.838709677419355) internal successors, (150), 26 states have internal predecessors, (150), 13 states have call successors, (39), 6 states have call predecessors, (39), 6 states have return successors, (35), 11 states have call predecessors, (35), 11 states have call successors, (35) [2021-12-18 00:01:11,847 INFO L276 IsEmpty]: Start isEmpty. Operand 443 states and 555 transitions. [2021-12-18 00:01:11,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2021-12-18 00:01:11,848 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:01:11,848 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 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] [2021-12-18 00:01:11,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2021-12-18 00:01:12,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:01:12,062 INFO L402 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:01:12,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:01:12,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1185688539, now seen corresponding path program 1 times [2021-12-18 00:01:12,063 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:01:12,063 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576936] [2021-12-18 00:01:12,063 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:01:12,063 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:01:12,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:12,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:01:12,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:12,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:01:12,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:12,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 00:01:12,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:12,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:01:12,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:12,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 00:01:12,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:12,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:01:12,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:12,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:01:12,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:12,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:01:12,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:12,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:01:12,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:12,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:01:12,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:12,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-18 00:01:12,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:12,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-18 00:01:12,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:12,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 00:01:12,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:12,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 00:01:12,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:12,267 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2021-12-18 00:01:12,267 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:01:12,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576936] [2021-12-18 00:01:12,267 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1576936] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:01:12,267 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 00:01:12,267 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-18 00:01:12,267 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472019114] [2021-12-18 00:01:12,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:01:12,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-18 00:01:12,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:01:12,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-18 00:01:12,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-18 00:01:12,269 INFO L87 Difference]: Start difference. First operand 443 states and 555 transitions. Second operand has 11 states, 10 states have (on average 5.7) internal successors, (57), 8 states have internal predecessors, (57), 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) [2021-12-18 00:01:12,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:01:12,682 INFO L93 Difference]: Finished difference Result 459 states and 574 transitions. [2021-12-18 00:01:12,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 00:01:12,682 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.7) internal successors, (57), 8 states have internal predecessors, (57), 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 144 [2021-12-18 00:01:12,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:01:12,684 INFO L225 Difference]: With dead ends: 459 [2021-12-18 00:01:12,684 INFO L226 Difference]: Without dead ends: 457 [2021-12-18 00:01:12,684 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2021-12-18 00:01:12,684 INFO L933 BasicCegarLoop]: 153 mSDtfsCounter, 95 mSDsluCounter, 818 mSDsCounter, 0 mSdLazyCounter, 654 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 971 SdHoareTripleChecker+Invalid, 702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 00:01:12,685 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [112 Valid, 971 Invalid, 702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 654 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-18 00:01:12,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 457 states. [2021-12-18 00:01:12,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 457 to 455. [2021-12-18 00:01:12,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 314 states have (on average 1.0955414012738853) internal successors, (344), 319 states have internal predecessors, (344), 94 states have call successors, (94), 43 states have call predecessors, (94), 46 states have return successors, (131), 92 states have call predecessors, (131), 93 states have call successors, (131) [2021-12-18 00:01:12,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 569 transitions. [2021-12-18 00:01:12,711 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 569 transitions. Word has length 144 [2021-12-18 00:01:12,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:01:12,711 INFO L470 AbstractCegarLoop]: Abstraction has 455 states and 569 transitions. [2021-12-18 00:01:12,712 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.7) internal successors, (57), 8 states have internal predecessors, (57), 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) [2021-12-18 00:01:12,712 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 569 transitions. [2021-12-18 00:01:12,713 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2021-12-18 00:01:12,713 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:01:12,714 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:01:12,714 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2021-12-18 00:01:12,714 INFO L402 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:01:12,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:01:12,714 INFO L85 PathProgramCache]: Analyzing trace with hash -1097982425, now seen corresponding path program 1 times [2021-12-18 00:01:12,714 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:01:12,714 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1287905150] [2021-12-18 00:01:12,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:01:12,715 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:01:12,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:12,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:01:12,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:12,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:01:12,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:12,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 00:01:12,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:13,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:01:13,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:13,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 00:01:13,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:13,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:01:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:13,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:01:13,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:13,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 00:01:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:13,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2021-12-18 00:01:13,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:13,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 00:01:13,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:13,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:01:13,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:13,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2021-12-18 00:01:13,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:13,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-18 00:01:13,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:13,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 00:01:13,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:13,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 00:01:13,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:13,225 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-12-18 00:01:13,225 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:01:13,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1287905150] [2021-12-18 00:01:13,225 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1287905150] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:01:13,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [29789963] [2021-12-18 00:01:13,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:01:13,225 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:01:13,226 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:01:13,226 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:01:13,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2021-12-18 00:01:13,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:13,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 2812 conjuncts, 83 conjunts are in the unsatisfiable core [2021-12-18 00:01:13,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:01:13,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 00:01:13,848 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-12-18 00:01:13,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-12-18 00:01:13,879 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 00:01:14,185 INFO L354 Elim1Store]: treesize reduction 138, result has 20.7 percent of original size [2021-12-18 00:01:14,186 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 35 treesize of output 54 [2021-12-18 00:01:14,278 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 38 treesize of output 36 [2021-12-18 00:01:14,519 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 38 treesize of output 36 [2021-12-18 00:01:14,574 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:01:14,575 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 28 [2021-12-18 00:01:14,594 INFO L354 Elim1Store]: treesize reduction 24, result has 41.5 percent of original size [2021-12-18 00:01:14,594 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 25 treesize of output 29 [2021-12-18 00:01:18,921 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 124 proven. 15 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2021-12-18 00:01:18,921 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:01:19,875 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [29789963] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:01:19,875 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 00:01:19,875 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 19] total 32 [2021-12-18 00:01:19,875 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743333674] [2021-12-18 00:01:19,875 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 00:01:19,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2021-12-18 00:01:19,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:01:19,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2021-12-18 00:01:19,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1328, Unknown=5, NotChecked=0, Total=1482 [2021-12-18 00:01:19,880 INFO L87 Difference]: Start difference. First operand 455 states and 569 transitions. Second operand has 32 states, 30 states have (on average 4.733333333333333) internal successors, (142), 28 states have internal predecessors, (142), 12 states have call successors, (31), 8 states have call predecessors, (31), 9 states have return successors, (29), 11 states have call predecessors, (29), 12 states have call successors, (29) [2021-12-18 00:01:22,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:01:22,992 INFO L93 Difference]: Finished difference Result 794 states and 979 transitions. [2021-12-18 00:01:22,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2021-12-18 00:01:22,993 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 30 states have (on average 4.733333333333333) internal successors, (142), 28 states have internal predecessors, (142), 12 states have call successors, (31), 8 states have call predecessors, (31), 9 states have return successors, (29), 11 states have call predecessors, (29), 12 states have call successors, (29) Word has length 145 [2021-12-18 00:01:22,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:01:22,995 INFO L225 Difference]: With dead ends: 794 [2021-12-18 00:01:22,995 INFO L226 Difference]: Without dead ends: 534 [2021-12-18 00:01:22,997 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 309 GetRequests, 242 SyntacticMatches, 9 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1030 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=344, Invalid=3190, Unknown=6, NotChecked=0, Total=3540 [2021-12-18 00:01:22,998 INFO L933 BasicCegarLoop]: 162 mSDtfsCounter, 184 mSDsluCounter, 812 mSDsCounter, 0 mSdLazyCounter, 936 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 204 SdHoareTripleChecker+Valid, 974 SdHoareTripleChecker+Invalid, 1563 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 936 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 504 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-18 00:01:22,998 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [204 Valid, 974 Invalid, 1563 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 936 Invalid, 0 Unknown, 504 Unchecked, 0.6s Time] [2021-12-18 00:01:22,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 534 states. [2021-12-18 00:01:23,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 534 to 506. [2021-12-18 00:01:23,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 506 states, 355 states have (on average 1.087323943661972) internal successors, (386), 361 states have internal predecessors, (386), 99 states have call successors, (99), 48 states have call predecessors, (99), 51 states have return successors, (138), 96 states have call predecessors, (138), 98 states have call successors, (138) [2021-12-18 00:01:23,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 506 states to 506 states and 623 transitions. [2021-12-18 00:01:23,021 INFO L78 Accepts]: Start accepts. Automaton has 506 states and 623 transitions. Word has length 145 [2021-12-18 00:01:23,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:01:23,022 INFO L470 AbstractCegarLoop]: Abstraction has 506 states and 623 transitions. [2021-12-18 00:01:23,022 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 30 states have (on average 4.733333333333333) internal successors, (142), 28 states have internal predecessors, (142), 12 states have call successors, (31), 8 states have call predecessors, (31), 9 states have return successors, (29), 11 states have call predecessors, (29), 12 states have call successors, (29) [2021-12-18 00:01:23,022 INFO L276 IsEmpty]: Start isEmpty. Operand 506 states and 623 transitions. [2021-12-18 00:01:23,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-18 00:01:23,025 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:01:23,025 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:01:23,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2021-12-18 00:01:23,239 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2021-12-18 00:01:23,239 INFO L402 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:01:23,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:01:23,240 INFO L85 PathProgramCache]: Analyzing trace with hash -24727541, now seen corresponding path program 1 times [2021-12-18 00:01:23,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:01:23,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [217267972] [2021-12-18 00:01:23,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:01:23,240 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:01:23,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:23,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:01:23,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:23,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:01:23,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:23,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 00:01:23,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:23,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 00:01:23,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:23,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:01:23,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:23,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 00:01:23,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:23,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 00:01:23,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:23,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 00:01:23,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:23,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2021-12-18 00:01:23,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:23,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:01:23,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:23,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2021-12-18 00:01:23,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:23,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:01:23,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:23,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2021-12-18 00:01:23,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:23,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 00:01:23,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:23,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2021-12-18 00:01:23,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:23,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2021-12-18 00:01:23,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:23,715 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-12-18 00:01:23,715 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:01:23,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [217267972] [2021-12-18 00:01:23,715 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [217267972] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:01:23,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [311682548] [2021-12-18 00:01:23,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:01:23,716 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:01:23,716 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:01:23,717 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:01:23,718 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2021-12-18 00:01:24,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:24,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 2825 conjuncts, 81 conjunts are in the unsatisfiable core [2021-12-18 00:01:24,153 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:01:24,282 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 00:01:28,508 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 00:01:28,508 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2021-12-18 00:01:28,513 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-12-18 00:01:28,557 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 00:01:28,557 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 27 [2021-12-18 00:01:28,562 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-12-18 00:01:28,573 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 00:01:28,576 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 00:01:28,800 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-12-18 00:01:29,042 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:01:29,043 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 23 treesize of output 22 [2021-12-18 00:01:29,774 INFO L134 CoverageAnalysis]: Checked inductivity of 168 backedges. 64 proven. 79 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-18 00:01:29,775 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:01:32,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [311682548] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:01:32,144 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 00:01:32,144 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 25] total 39 [2021-12-18 00:01:32,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374219517] [2021-12-18 00:01:32,144 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 00:01:32,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2021-12-18 00:01:32,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:01:32,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2021-12-18 00:01:32,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=148, Invalid=1920, Unknown=2, NotChecked=0, Total=2070 [2021-12-18 00:01:32,146 INFO L87 Difference]: Start difference. First operand 506 states and 623 transitions. Second operand has 39 states, 36 states have (on average 4.416666666666667) internal successors, (159), 35 states have internal predecessors, (159), 16 states have call successors, (35), 6 states have call predecessors, (35), 8 states have return successors, (32), 14 states have call predecessors, (32), 15 states have call successors, (32) [2021-12-18 00:01:36,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:01:36,377 INFO L93 Difference]: Finished difference Result 723 states and 875 transitions. [2021-12-18 00:01:36,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2021-12-18 00:01:36,377 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 36 states have (on average 4.416666666666667) internal successors, (159), 35 states have internal predecessors, (159), 16 states have call successors, (35), 6 states have call predecessors, (35), 8 states have return successors, (32), 14 states have call predecessors, (32), 15 states have call successors, (32) Word has length 150 [2021-12-18 00:01:36,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:01:36,379 INFO L225 Difference]: With dead ends: 723 [2021-12-18 00:01:36,379 INFO L226 Difference]: Without dead ends: 472 [2021-12-18 00:01:36,381 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 206 SyntacticMatches, 17 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1591 ImplicationChecksByTransitivity, 10.2s TimeCoverageRelationStatistics Valid=446, Invalid=4807, Unknown=3, NotChecked=0, Total=5256 [2021-12-18 00:01:36,382 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 213 mSDsluCounter, 1555 mSDsCounter, 0 mSdLazyCounter, 2618 mSolverCounterSat, 141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 3312 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 141 IncrementalHoareTripleChecker+Valid, 2618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 553 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-18 00:01:36,382 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [246 Valid, 1698 Invalid, 3312 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [141 Valid, 2618 Invalid, 0 Unknown, 553 Unchecked, 1.3s Time] [2021-12-18 00:01:36,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 472 states. [2021-12-18 00:01:36,399 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 472 to 439. [2021-12-18 00:01:36,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 439 states, 318 states have (on average 1.078616352201258) internal successors, (343), 323 states have internal predecessors, (343), 75 states have call successors, (75), 43 states have call predecessors, (75), 45 states have return successors, (98), 72 states have call predecessors, (98), 74 states have call successors, (98) [2021-12-18 00:01:36,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 439 states to 439 states and 516 transitions. [2021-12-18 00:01:36,401 INFO L78 Accepts]: Start accepts. Automaton has 439 states and 516 transitions. Word has length 150 [2021-12-18 00:01:36,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:01:36,401 INFO L470 AbstractCegarLoop]: Abstraction has 439 states and 516 transitions. [2021-12-18 00:01:36,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 36 states have (on average 4.416666666666667) internal successors, (159), 35 states have internal predecessors, (159), 16 states have call successors, (35), 6 states have call predecessors, (35), 8 states have return successors, (32), 14 states have call predecessors, (32), 15 states have call successors, (32) [2021-12-18 00:01:36,402 INFO L276 IsEmpty]: Start isEmpty. Operand 439 states and 516 transitions. [2021-12-18 00:01:36,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2021-12-18 00:01:36,404 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:01:36,404 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:01:36,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2021-12-18 00:01:36,617 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2021-12-18 00:01:36,617 INFO L402 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:01:36,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:01:36,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1561142501, now seen corresponding path program 1 times [2021-12-18 00:01:36,617 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:01:36,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1143624033] [2021-12-18 00:01:36,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:01:36,618 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:01:36,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:37,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:01:37,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:37,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:01:37,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:37,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 00:01:37,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:37,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:01:37,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:37,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 00:01:37,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:37,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:01:37,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:37,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:01:37,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:37,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:01:37,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:37,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:01:37,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:37,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:01:37,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:37,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 00:01:37,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:37,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:01:37,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:37,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 00:01:37,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:37,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 00:01:37,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:37,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 00:01:37,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:37,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 00:01:37,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:37,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-18 00:01:37,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:37,325 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2021-12-18 00:01:37,325 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:01:37,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1143624033] [2021-12-18 00:01:37,326 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1143624033] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:01:37,326 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 00:01:37,326 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2021-12-18 00:01:37,326 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532977854] [2021-12-18 00:01:37,326 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:01:37,327 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-12-18 00:01:37,327 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:01:37,327 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-12-18 00:01:37,327 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2021-12-18 00:01:37,327 INFO L87 Difference]: Start difference. First operand 439 states and 516 transitions. Second operand has 20 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 16 states have internal predecessors, (64), 10 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17) [2021-12-18 00:01:38,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:01:38,348 INFO L93 Difference]: Finished difference Result 483 states and 575 transitions. [2021-12-18 00:01:38,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-18 00:01:38,349 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 16 states have internal predecessors, (64), 10 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17) Word has length 150 [2021-12-18 00:01:38,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:01:38,350 INFO L225 Difference]: With dead ends: 483 [2021-12-18 00:01:38,350 INFO L226 Difference]: Without dead ends: 481 [2021-12-18 00:01:38,351 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=134, Invalid=736, Unknown=0, NotChecked=0, Total=870 [2021-12-18 00:01:38,351 INFO L933 BasicCegarLoop]: 116 mSDtfsCounter, 365 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 1348 mSolverCounterSat, 363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 400 SdHoareTripleChecker+Invalid, 1711 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 363 IncrementalHoareTripleChecker+Valid, 1348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-18 00:01:38,351 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [376 Valid, 400 Invalid, 1711 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [363 Valid, 1348 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-18 00:01:38,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 481 states. [2021-12-18 00:01:38,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 481 to 450. [2021-12-18 00:01:38,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 450 states, 326 states have (on average 1.0797546012269938) internal successors, (352), 331 states have internal predecessors, (352), 77 states have call successors, (77), 44 states have call predecessors, (77), 46 states have return successors, (100), 74 states have call predecessors, (100), 76 states have call successors, (100) [2021-12-18 00:01:38,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 450 states to 450 states and 529 transitions. [2021-12-18 00:01:38,368 INFO L78 Accepts]: Start accepts. Automaton has 450 states and 529 transitions. Word has length 150 [2021-12-18 00:01:38,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:01:38,368 INFO L470 AbstractCegarLoop]: Abstraction has 450 states and 529 transitions. [2021-12-18 00:01:38,368 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 3.5555555555555554) internal successors, (64), 16 states have internal predecessors, (64), 10 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 9 states have call predecessors, (17), 9 states have call successors, (17) [2021-12-18 00:01:38,369 INFO L276 IsEmpty]: Start isEmpty. Operand 450 states and 529 transitions. [2021-12-18 00:01:38,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-18 00:01:38,370 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:01:38,370 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2021-12-18 00:01:38,370 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2021-12-18 00:01:38,370 INFO L402 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:01:38,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:01:38,371 INFO L85 PathProgramCache]: Analyzing trace with hash 75396822, now seen corresponding path program 1 times [2021-12-18 00:01:38,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:01:38,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1166849296] [2021-12-18 00:01:38,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:01:38,371 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:01:38,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:38,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:01:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:38,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:01:38,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:38,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 00:01:38,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:38,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:01:38,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:38,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 00:01:38,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:38,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:01:38,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:38,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:01:38,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:38,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 00:01:38,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:38,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 00:01:38,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:38,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-18 00:01:38,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:38,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:01:38,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:38,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-18 00:01:38,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:38,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 00:01:38,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:38,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-18 00:01:38,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:38,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 00:01:38,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:38,716 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 66 proven. 7 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2021-12-18 00:01:38,716 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:01:38,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1166849296] [2021-12-18 00:01:38,716 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1166849296] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:01:38,716 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [706758228] [2021-12-18 00:01:38,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:01:38,717 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:01:38,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:01:38,718 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:01:38,719 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2021-12-18 00:01:39,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:39,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 2821 conjuncts, 109 conjunts are in the unsatisfiable core [2021-12-18 00:01:39,170 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:01:39,263 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 00:01:39,419 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 00:01:39,419 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2021-12-18 00:01:39,423 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-12-18 00:01:39,469 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 00:01:39,469 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 27 [2021-12-18 00:01:39,480 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 00:01:39,647 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2021-12-18 00:01:40,661 WARN L234 Elim1Store]: Array PQE input equivalent to false [2021-12-18 00:01:40,666 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 75 proven. 91 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-12-18 00:01:40,666 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:01:41,756 INFO L354 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2021-12-18 00:01:41,757 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 19 [2021-12-18 00:01:41,985 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 64 proven. 16 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2021-12-18 00:01:41,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [706758228] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 00:01:41,986 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 00:01:41,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 33, 17] total 55 [2021-12-18 00:01:41,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [540735201] [2021-12-18 00:01:41,987 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 00:01:41,988 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2021-12-18 00:01:41,989 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:01:41,989 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2021-12-18 00:01:41,989 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=2783, Unknown=0, NotChecked=0, Total=2970 [2021-12-18 00:01:41,990 INFO L87 Difference]: Start difference. First operand 450 states and 529 transitions. Second operand has 55 states, 51 states have (on average 3.7254901960784315) internal successors, (190), 49 states have internal predecessors, (190), 14 states have call successors, (38), 7 states have call predecessors, (38), 11 states have return successors, (32), 13 states have call predecessors, (32), 11 states have call successors, (32) [2021-12-18 00:01:46,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:01:46,416 INFO L93 Difference]: Finished difference Result 603 states and 707 transitions. [2021-12-18 00:01:46,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-12-18 00:01:46,417 INFO L78 Accepts]: Start accepts. Automaton has has 55 states, 51 states have (on average 3.7254901960784315) internal successors, (190), 49 states have internal predecessors, (190), 14 states have call successors, (38), 7 states have call predecessors, (38), 11 states have return successors, (32), 13 states have call predecessors, (32), 11 states have call successors, (32) Word has length 151 [2021-12-18 00:01:46,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:01:46,419 INFO L225 Difference]: With dead ends: 603 [2021-12-18 00:01:46,419 INFO L226 Difference]: Without dead ends: 518 [2021-12-18 00:01:46,420 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 417 GetRequests, 287 SyntacticMatches, 12 SemanticMatches, 118 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3935 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=987, Invalid=13293, Unknown=0, NotChecked=0, Total=14280 [2021-12-18 00:01:46,421 INFO L933 BasicCegarLoop]: 156 mSDtfsCounter, 264 mSDsluCounter, 2858 mSDsCounter, 0 mSdLazyCounter, 4507 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 3014 SdHoareTripleChecker+Invalid, 5688 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 4507 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 966 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2021-12-18 00:01:46,421 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [272 Valid, 3014 Invalid, 5688 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 4507 Invalid, 0 Unknown, 966 Unchecked, 2.1s Time] [2021-12-18 00:01:46,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 518 states. [2021-12-18 00:01:46,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 518 to 452. [2021-12-18 00:01:46,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 452 states, 329 states have (on average 1.082066869300912) internal successors, (356), 333 states have internal predecessors, (356), 76 states have call successors, (76), 45 states have call predecessors, (76), 46 states have return successors, (98), 73 states have call predecessors, (98), 75 states have call successors, (98) [2021-12-18 00:01:46,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 452 states to 452 states and 530 transitions. [2021-12-18 00:01:46,440 INFO L78 Accepts]: Start accepts. Automaton has 452 states and 530 transitions. Word has length 151 [2021-12-18 00:01:46,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:01:46,440 INFO L470 AbstractCegarLoop]: Abstraction has 452 states and 530 transitions. [2021-12-18 00:01:46,440 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 55 states, 51 states have (on average 3.7254901960784315) internal successors, (190), 49 states have internal predecessors, (190), 14 states have call successors, (38), 7 states have call predecessors, (38), 11 states have return successors, (32), 13 states have call predecessors, (32), 11 states have call successors, (32) [2021-12-18 00:01:46,441 INFO L276 IsEmpty]: Start isEmpty. Operand 452 states and 530 transitions. [2021-12-18 00:01:46,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2021-12-18 00:01:46,442 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:01:46,442 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 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] [2021-12-18 00:01:46,464 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2021-12-18 00:01:46,655 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:01:46,655 INFO L402 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:01:46,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:01:46,656 INFO L85 PathProgramCache]: Analyzing trace with hash -687982950, now seen corresponding path program 1 times [2021-12-18 00:01:46,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:01:46,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532324306] [2021-12-18 00:01:46,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:01:46,656 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:01:46,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:46,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:01:46,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:46,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:01:46,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:46,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 00:01:46,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:46,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:01:46,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:46,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 00:01:46,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:46,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:01:46,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:46,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:01:46,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:46,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 00:01:46,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:47,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 00:01:47,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:47,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-18 00:01:47,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:47,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:01:47,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:47,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-18 00:01:47,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:47,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 00:01:47,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:47,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-18 00:01:47,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:47,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 00:01:47,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:47,130 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 16 proven. 32 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2021-12-18 00:01:47,131 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:01:47,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532324306] [2021-12-18 00:01:47,131 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532324306] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:01:47,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1790580144] [2021-12-18 00:01:47,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:01:47,131 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:01:47,131 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:01:47,132 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:01:47,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2021-12-18 00:01:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:01:47,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 2821 conjuncts, 130 conjunts are in the unsatisfiable core [2021-12-18 00:01:47,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:01:47,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 00:01:47,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 00:01:47,947 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 00:01:47,948 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2021-12-18 00:01:47,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-12-18 00:01:47,967 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 00:01:47,968 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 16 treesize of output 22 [2021-12-18 00:01:47,974 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-12-18 00:01:48,040 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 00:01:48,041 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 20 treesize of output 26 [2021-12-18 00:01:48,050 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 00:01:48,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 27 [2021-12-18 00:01:48,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 00:01:48,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 00:01:48,264 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 00:01:48,268 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 00:01:53,755 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 00:01:53,756 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 57 treesize of output 53 [2021-12-18 00:01:53,760 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 00:01:53,760 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 53 treesize of output 49 [2021-12-18 00:01:53,879 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 78 proven. 85 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2021-12-18 00:01:53,879 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:01:55,847 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 79 proven. 19 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-12-18 00:01:55,847 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1790580144] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 00:01:55,847 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 00:01:55,847 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 38, 21] total 71 [2021-12-18 00:01:55,847 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1494684119] [2021-12-18 00:01:55,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 00:01:55,848 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2021-12-18 00:01:55,848 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:01:55,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-12-18 00:01:55,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=212, Invalid=4757, Unknown=1, NotChecked=0, Total=4970 [2021-12-18 00:01:55,849 INFO L87 Difference]: Start difference. First operand 452 states and 530 transitions. Second operand has 71 states, 63 states have (on average 3.3333333333333335) internal successors, (210), 60 states have internal predecessors, (210), 21 states have call successors, (49), 9 states have call predecessors, (49), 13 states have return successors, (42), 19 states have call predecessors, (42), 18 states have call successors, (42) [2021-12-18 00:02:05,369 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:02:05,369 INFO L93 Difference]: Finished difference Result 690 states and 856 transitions. [2021-12-18 00:02:05,370 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 100 states. [2021-12-18 00:02:05,370 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 63 states have (on average 3.3333333333333335) internal successors, (210), 60 states have internal predecessors, (210), 21 states have call successors, (49), 9 states have call predecessors, (49), 13 states have return successors, (42), 19 states have call predecessors, (42), 18 states have call successors, (42) Word has length 151 [2021-12-18 00:02:05,370 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:02:05,372 INFO L225 Difference]: With dead ends: 690 [2021-12-18 00:02:05,372 INFO L226 Difference]: Without dead ends: 590 [2021-12-18 00:02:05,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 444 GetRequests, 286 SyntacticMatches, 7 SemanticMatches, 151 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5486 ImplicationChecksByTransitivity, 11.6s TimeCoverageRelationStatistics Valid=1124, Invalid=22130, Unknown=2, NotChecked=0, Total=23256 [2021-12-18 00:02:05,379 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 417 mSDsluCounter, 4520 mSDsCounter, 0 mSdLazyCounter, 8008 mSolverCounterSat, 587 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 424 SdHoareTripleChecker+Valid, 4679 SdHoareTripleChecker+Invalid, 10167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 587 IncrementalHoareTripleChecker+Valid, 8008 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1572 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2021-12-18 00:02:05,379 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [424 Valid, 4679 Invalid, 10167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [587 Valid, 8008 Invalid, 0 Unknown, 1572 Unchecked, 4.1s Time] [2021-12-18 00:02:05,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 590 states. [2021-12-18 00:02:05,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 590 to 503. [2021-12-18 00:02:05,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 503 states, 360 states have (on average 1.086111111111111) internal successors, (391), 365 states have internal predecessors, (391), 91 states have call successors, (91), 48 states have call predecessors, (91), 51 states have return successors, (122), 89 states have call predecessors, (122), 90 states have call successors, (122) [2021-12-18 00:02:05,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 503 states to 503 states and 604 transitions. [2021-12-18 00:02:05,402 INFO L78 Accepts]: Start accepts. Automaton has 503 states and 604 transitions. Word has length 151 [2021-12-18 00:02:05,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:02:05,402 INFO L470 AbstractCegarLoop]: Abstraction has 503 states and 604 transitions. [2021-12-18 00:02:05,402 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 63 states have (on average 3.3333333333333335) internal successors, (210), 60 states have internal predecessors, (210), 21 states have call successors, (49), 9 states have call predecessors, (49), 13 states have return successors, (42), 19 states have call predecessors, (42), 18 states have call successors, (42) [2021-12-18 00:02:05,402 INFO L276 IsEmpty]: Start isEmpty. Operand 503 states and 604 transitions. [2021-12-18 00:02:05,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2021-12-18 00:02:05,404 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:02:05,404 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:02:05,438 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2021-12-18 00:02:05,625 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:02:05,625 INFO L402 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:02:05,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:02:05,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1441262711, now seen corresponding path program 1 times [2021-12-18 00:02:05,626 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:02:05,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2020549037] [2021-12-18 00:02:05,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:02:05,626 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:02:05,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:05,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:02:05,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:05,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:02:05,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:05,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 00:02:05,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:06,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:06,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:06,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 00:02:06,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:06,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:02:06,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:06,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:02:06,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:06,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:02:06,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:06,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:02:06,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:06,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:06,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:06,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 00:02:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:06,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:06,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:06,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 00:02:06,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:06,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 00:02:06,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:06,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 00:02:06,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:06,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 00:02:06,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:06,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2021-12-18 00:02:06,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:06,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2021-12-18 00:02:06,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:06,245 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2021-12-18 00:02:06,246 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:02:06,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2020549037] [2021-12-18 00:02:06,246 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2020549037] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:02:06,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [332706016] [2021-12-18 00:02:06,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:02:06,247 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:02:06,247 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:02:06,248 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:02:06,250 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2021-12-18 00:02:06,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:06,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 2822 conjuncts, 107 conjunts are in the unsatisfiable core [2021-12-18 00:02:06,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:02:06,840 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 00:02:06,843 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 00:02:11,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:02:11,317 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2021-12-18 00:02:11,328 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 00:02:11,328 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2021-12-18 00:02:11,336 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-12-18 00:02:17,763 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:02:17,764 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2021-12-18 00:02:17,773 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 00:02:17,773 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 27 [2021-12-18 00:02:18,337 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 36 proven. 81 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2021-12-18 00:02:18,337 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:02:19,089 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_2952 Int)) (not (= 0 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_write_be64_~#x#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_write_be64_~#x#1.base|) |c_ULTIMATE.start_aws_byte_buf_write_be64_~#x#1.offset| v_ArrVal_2952)) |c_ULTIMATE.start_aws_byte_buf_write_be64_~buf#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_write_be64_~buf#1.offset| 16)) 18446744073709551616)))) (forall ((v_ArrVal_2951 (Array Int Int))) (not (= 0 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_byte_buf_write_be64_~#x#1.base| v_ArrVal_2951) |c_ULTIMATE.start_aws_byte_buf_write_be64_~buf#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_write_be64_~buf#1.offset| 8)))))) is different from false [2021-12-18 00:02:19,098 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [332706016] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:02:19,098 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 00:02:19,098 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 27] total 45 [2021-12-18 00:02:19,098 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861007837] [2021-12-18 00:02:19,098 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 00:02:19,099 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-12-18 00:02:19,099 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:02:19,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-12-18 00:02:19,100 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2654, Unknown=4, NotChecked=104, Total=2970 [2021-12-18 00:02:19,100 INFO L87 Difference]: Start difference. First operand 503 states and 604 transitions. Second operand has 45 states, 41 states have (on average 3.8048780487804876) internal successors, (156), 39 states have internal predecessors, (156), 21 states have call successors, (37), 9 states have call predecessors, (37), 12 states have return successors, (36), 18 states have call predecessors, (36), 21 states have call successors, (36) [2021-12-18 00:02:27,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:02:27,568 INFO L93 Difference]: Finished difference Result 679 states and 842 transitions. [2021-12-18 00:02:27,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2021-12-18 00:02:27,568 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 41 states have (on average 3.8048780487804876) internal successors, (156), 39 states have internal predecessors, (156), 21 states have call successors, (37), 9 states have call predecessors, (37), 12 states have return successors, (36), 18 states have call predecessors, (36), 21 states have call successors, (36) Word has length 156 [2021-12-18 00:02:27,568 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:02:27,570 INFO L225 Difference]: With dead ends: 679 [2021-12-18 00:02:27,570 INFO L226 Difference]: Without dead ends: 580 [2021-12-18 00:02:27,571 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 321 GetRequests, 223 SyntacticMatches, 12 SemanticMatches, 86 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2606 ImplicationChecksByTransitivity, 18.6s TimeCoverageRelationStatistics Valid=638, Invalid=6841, Unknown=7, NotChecked=170, Total=7656 [2021-12-18 00:02:27,572 INFO L933 BasicCegarLoop]: 191 mSDtfsCounter, 404 mSDsluCounter, 1333 mSDsCounter, 0 mSdLazyCounter, 2583 mSolverCounterSat, 323 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 4210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 323 IncrementalHoareTripleChecker+Valid, 2583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1304 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-18 00:02:27,572 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [437 Valid, 1524 Invalid, 4210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [323 Valid, 2583 Invalid, 0 Unknown, 1304 Unchecked, 1.3s Time] [2021-12-18 00:02:27,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 580 states. [2021-12-18 00:02:27,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 580 to 514. [2021-12-18 00:02:27,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 514 states, 367 states have (on average 1.0844686648501363) internal successors, (398), 373 states have internal predecessors, (398), 94 states have call successors, (94), 47 states have call predecessors, (94), 52 states have return successors, (129), 93 states have call predecessors, (129), 92 states have call successors, (129) [2021-12-18 00:02:27,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 514 states to 514 states and 621 transitions. [2021-12-18 00:02:27,596 INFO L78 Accepts]: Start accepts. Automaton has 514 states and 621 transitions. Word has length 156 [2021-12-18 00:02:27,597 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:02:27,597 INFO L470 AbstractCegarLoop]: Abstraction has 514 states and 621 transitions. [2021-12-18 00:02:27,597 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 41 states have (on average 3.8048780487804876) internal successors, (156), 39 states have internal predecessors, (156), 21 states have call successors, (37), 9 states have call predecessors, (37), 12 states have return successors, (36), 18 states have call predecessors, (36), 21 states have call successors, (36) [2021-12-18 00:02:27,597 INFO L276 IsEmpty]: Start isEmpty. Operand 514 states and 621 transitions. [2021-12-18 00:02:27,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2021-12-18 00:02:27,599 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:02:27,599 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:02:27,621 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2021-12-18 00:02:27,811 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:02:27,811 INFO L402 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:02:27,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:02:27,812 INFO L85 PathProgramCache]: Analyzing trace with hash 80609748, now seen corresponding path program 1 times [2021-12-18 00:02:27,812 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:02:27,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806386869] [2021-12-18 00:02:27,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:02:27,812 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:02:27,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:28,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:02:28,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:28,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:02:28,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:28,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 00:02:28,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:28,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:28,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:28,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 00:02:28,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:28,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:02:28,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:28,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:02:28,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:28,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 00:02:28,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:28,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 00:02:28,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:28,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-18 00:02:28,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:28,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:28,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:28,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-18 00:02:28,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:28,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:28,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:28,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-18 00:02:28,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:28,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 00:02:28,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:28,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 00:02:28,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:28,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2021-12-18 00:02:28,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:28,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 147 [2021-12-18 00:02:28,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:28,488 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 130 trivial. 0 not checked. [2021-12-18 00:02:28,488 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:02:28,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806386869] [2021-12-18 00:02:28,488 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806386869] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:02:28,488 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 00:02:28,489 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2021-12-18 00:02:28,489 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [338489776] [2021-12-18 00:02:28,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:02:28,489 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-12-18 00:02:28,489 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:02:28,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-12-18 00:02:28,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=407, Unknown=0, NotChecked=0, Total=462 [2021-12-18 00:02:28,490 INFO L87 Difference]: Start difference. First operand 514 states and 621 transitions. Second operand has 22 states, 21 states have (on average 3.6666666666666665) internal successors, (77), 19 states have internal predecessors, (77), 11 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 11 states have call successors, (18) [2021-12-18 00:02:30,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:02:30,274 INFO L93 Difference]: Finished difference Result 665 states and 818 transitions. [2021-12-18 00:02:30,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-12-18 00:02:30,274 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 21 states have (on average 3.6666666666666665) internal successors, (77), 19 states have internal predecessors, (77), 11 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 11 states have call successors, (18) Word has length 157 [2021-12-18 00:02:30,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:02:30,276 INFO L225 Difference]: With dead ends: 665 [2021-12-18 00:02:30,276 INFO L226 Difference]: Without dead ends: 562 [2021-12-18 00:02:30,277 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 349 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=205, Invalid=1277, Unknown=0, NotChecked=0, Total=1482 [2021-12-18 00:02:30,277 INFO L933 BasicCegarLoop]: 128 mSDtfsCounter, 284 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 2260 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 299 SdHoareTripleChecker+Valid, 475 SdHoareTripleChecker+Invalid, 2516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 2260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-12-18 00:02:30,277 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [299 Valid, 475 Invalid, 2516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 2260 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-12-18 00:02:30,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2021-12-18 00:02:30,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 494. [2021-12-18 00:02:30,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 494 states, 353 states have (on average 1.0821529745042493) internal successors, (382), 360 states have internal predecessors, (382), 89 states have call successors, (89), 45 states have call predecessors, (89), 51 states have return successors, (120), 88 states have call predecessors, (120), 87 states have call successors, (120) [2021-12-18 00:02:30,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 494 states to 494 states and 591 transitions. [2021-12-18 00:02:30,302 INFO L78 Accepts]: Start accepts. Automaton has 494 states and 591 transitions. Word has length 157 [2021-12-18 00:02:30,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:02:30,302 INFO L470 AbstractCegarLoop]: Abstraction has 494 states and 591 transitions. [2021-12-18 00:02:30,302 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 21 states have (on average 3.6666666666666665) internal successors, (77), 19 states have internal predecessors, (77), 11 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 9 states have call predecessors, (18), 11 states have call successors, (18) [2021-12-18 00:02:30,302 INFO L276 IsEmpty]: Start isEmpty. Operand 494 states and 591 transitions. [2021-12-18 00:02:30,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2021-12-18 00:02:30,304 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:02:30,304 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:02:30,304 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2021-12-18 00:02:30,304 INFO L402 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:02:30,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:02:30,305 INFO L85 PathProgramCache]: Analyzing trace with hash 2038972340, now seen corresponding path program 1 times [2021-12-18 00:02:30,305 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:02:30,305 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179791071] [2021-12-18 00:02:30,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:02:30,305 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:02:30,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:30,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:02:30,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:30,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:02:30,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:30,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 00:02:30,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:30,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:30,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:30,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 00:02:30,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:30,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:02:30,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:30,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:02:30,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:30,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:02:30,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:30,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:02:30,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:30,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:30,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:30,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-18 00:02:30,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:30,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 00:02:30,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:30,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-18 00:02:30,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:30,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-18 00:02:30,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:30,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:30,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:30,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:30,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:30,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:02:30,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:30,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 00:02:30,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:30,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-18 00:02:30,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:30,518 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2021-12-18 00:02:30,518 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:02:30,519 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179791071] [2021-12-18 00:02:30,519 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179791071] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:02:30,519 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 00:02:30,519 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-12-18 00:02:30,519 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577726847] [2021-12-18 00:02:30,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:02:30,522 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-12-18 00:02:30,522 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:02:30,522 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-12-18 00:02:30,522 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2021-12-18 00:02:30,522 INFO L87 Difference]: Start difference. First operand 494 states and 591 transitions. Second operand has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2021-12-18 00:02:31,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:02:31,002 INFO L93 Difference]: Finished difference Result 530 states and 634 transitions. [2021-12-18 00:02:31,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-18 00:02:31,002 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 160 [2021-12-18 00:02:31,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:02:31,004 INFO L225 Difference]: With dead ends: 530 [2021-12-18 00:02:31,004 INFO L226 Difference]: Without dead ends: 527 [2021-12-18 00:02:31,004 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2021-12-18 00:02:31,004 INFO L933 BasicCegarLoop]: 147 mSDtfsCounter, 154 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 106 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 157 SdHoareTripleChecker+Valid, 731 SdHoareTripleChecker+Invalid, 752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 106 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-18 00:02:31,005 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [157 Valid, 731 Invalid, 752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [106 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-18 00:02:31,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 527 states. [2021-12-18 00:02:31,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 527 to 508. [2021-12-18 00:02:31,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 508 states, 362 states have (on average 1.080110497237569) internal successors, (391), 370 states have internal predecessors, (391), 91 states have call successors, (91), 47 states have call predecessors, (91), 54 states have return successors, (125), 90 states have call predecessors, (125), 89 states have call successors, (125) [2021-12-18 00:02:31,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 508 states to 508 states and 607 transitions. [2021-12-18 00:02:31,028 INFO L78 Accepts]: Start accepts. Automaton has 508 states and 607 transitions. Word has length 160 [2021-12-18 00:02:31,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:02:31,028 INFO L470 AbstractCegarLoop]: Abstraction has 508 states and 607 transitions. [2021-12-18 00:02:31,028 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 2 states have call successors, (21), 4 states have call predecessors, (21), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2021-12-18 00:02:31,028 INFO L276 IsEmpty]: Start isEmpty. Operand 508 states and 607 transitions. [2021-12-18 00:02:31,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 165 [2021-12-18 00:02:31,030 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:02:31,030 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:02:31,030 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2021-12-18 00:02:31,030 INFO L402 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:02:31,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:02:31,030 INFO L85 PathProgramCache]: Analyzing trace with hash 4777338, now seen corresponding path program 1 times [2021-12-18 00:02:31,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:02:31,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835363072] [2021-12-18 00:02:31,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:02:31,031 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:02:31,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:31,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:02:31,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:31,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:02:31,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:31,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 00:02:31,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:31,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:31,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:31,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 00:02:31,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:31,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:02:31,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:31,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:02:31,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:31,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:02:31,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:31,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:02:31,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:31,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:31,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:31,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-18 00:02:31,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:31,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2021-12-18 00:02:31,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:31,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-18 00:02:31,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:31,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2021-12-18 00:02:31,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:31,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:31,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:31,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:31,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:31,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:02:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:31,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 00:02:31,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:31,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2021-12-18 00:02:31,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:31,281 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 224 trivial. 0 not checked. [2021-12-18 00:02:31,281 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:02:31,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835363072] [2021-12-18 00:02:31,282 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835363072] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:02:31,282 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 00:02:31,282 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-18 00:02:31,282 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804756817] [2021-12-18 00:02:31,282 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:02:31,283 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-18 00:02:31,283 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:02:31,283 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-18 00:02:31,283 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2021-12-18 00:02:31,283 INFO L87 Difference]: Start difference. First operand 508 states and 607 transitions. Second operand has 11 states, 10 states have (on average 6.5) internal successors, (65), 8 states have internal predecessors, (65), 5 states have call successors, (21), 5 states have call predecessors, (21), 3 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2021-12-18 00:02:31,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:02:31,782 INFO L93 Difference]: Finished difference Result 639 states and 775 transitions. [2021-12-18 00:02:31,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-18 00:02:31,782 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.5) internal successors, (65), 8 states have internal predecessors, (65), 5 states have call successors, (21), 5 states have call predecessors, (21), 3 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) Word has length 164 [2021-12-18 00:02:31,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:02:31,784 INFO L225 Difference]: With dead ends: 639 [2021-12-18 00:02:31,784 INFO L226 Difference]: Without dead ends: 512 [2021-12-18 00:02:31,785 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2021-12-18 00:02:31,786 INFO L933 BasicCegarLoop]: 141 mSDtfsCounter, 166 mSDsluCounter, 584 mSDsCounter, 0 mSdLazyCounter, 588 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 00:02:31,787 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 725 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 588 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-18 00:02:31,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 512 states. [2021-12-18 00:02:31,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 512 to 510. [2021-12-18 00:02:31,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 510 states, 364 states have (on average 1.0796703296703296) internal successors, (393), 372 states have internal predecessors, (393), 91 states have call successors, (91), 47 states have call predecessors, (91), 54 states have return successors, (125), 90 states have call predecessors, (125), 89 states have call successors, (125) [2021-12-18 00:02:31,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 510 states to 510 states and 609 transitions. [2021-12-18 00:02:31,810 INFO L78 Accepts]: Start accepts. Automaton has 510 states and 609 transitions. Word has length 164 [2021-12-18 00:02:31,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:02:31,810 INFO L470 AbstractCegarLoop]: Abstraction has 510 states and 609 transitions. [2021-12-18 00:02:31,810 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.5) internal successors, (65), 8 states have internal predecessors, (65), 5 states have call successors, (21), 5 states have call predecessors, (21), 3 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2021-12-18 00:02:31,810 INFO L276 IsEmpty]: Start isEmpty. Operand 510 states and 609 transitions. [2021-12-18 00:02:31,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-12-18 00:02:31,812 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:02:31,812 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:02:31,812 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2021-12-18 00:02:31,813 INFO L402 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:02:31,813 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:02:31,813 INFO L85 PathProgramCache]: Analyzing trace with hash 1565234293, now seen corresponding path program 1 times [2021-12-18 00:02:31,813 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:02:31,813 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449806952] [2021-12-18 00:02:31,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:02:31,813 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:02:31,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:31,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:02:31,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:31,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:02:31,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:31,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 00:02:31,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:31,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:31,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 00:02:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:31,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:02:31,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:31,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:02:31,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:31,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 00:02:31,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:31,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 00:02:31,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:31,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-18 00:02:31,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:31,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:31,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:31,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-18 00:02:31,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:32,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2021-12-18 00:02:32,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:32,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 00:02:32,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:32,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2021-12-18 00:02:32,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:32,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:32,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:32,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:32,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:32,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:02:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:32,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 00:02:32,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:32,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-18 00:02:32,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:32,179 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2021-12-18 00:02:32,179 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:02:32,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449806952] [2021-12-18 00:02:32,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449806952] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:02:32,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [68919319] [2021-12-18 00:02:32,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:02:32,180 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:02:32,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:02:32,181 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:02:32,181 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-12-18 00:02:32,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:32,663 INFO L263 TraceCheckSpWp]: Trace formula consists of 2950 conjuncts, 110 conjunts are in the unsatisfiable core [2021-12-18 00:02:32,667 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:02:32,776 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 00:02:32,782 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 00:02:33,153 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 00:02:33,153 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-18 00:02:33,233 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 00:02:33,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2021-12-18 00:02:33,237 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-12-18 00:02:33,254 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:02:33,254 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2021-12-18 00:02:33,555 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 00:02:33,555 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 27 [2021-12-18 00:02:33,559 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:02:33,560 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2021-12-18 00:02:33,637 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 00:02:33,637 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2021-12-18 00:02:33,647 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:02:33,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2021-12-18 00:02:33,654 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 00:02:33,655 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-18 00:02:34,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:02:34,524 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 25 treesize of output 24 [2021-12-18 00:02:34,534 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 00:02:34,534 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 27 [2021-12-18 00:02:35,303 INFO L134 CoverageAnalysis]: Checked inductivity of 261 backedges. 175 proven. 40 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2021-12-18 00:02:35,304 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:02:35,814 WARN L838 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_3333 (Array Int Int))) (not (= 0 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_write_be64_~#x#1.base| v_ArrVal_3333) |c_ULTIMATE.start_aws_byte_buf_write_be64_~buf#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_write_be64_~buf#1.offset| 16)) 18446744073709551616)))) (forall ((v_ArrVal_3332 Int)) (not (= 0 (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_byte_buf_write_be64_~#x#1.base| (store (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_byte_buf_write_be64_~#x#1.base|) |c_ULTIMATE.start_aws_byte_buf_write_be64_~#x#1.offset| v_ArrVal_3332)) |c_ULTIMATE.start_aws_byte_buf_write_be64_~buf#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_write_be64_~buf#1.offset| 8)))))) is different from false [2021-12-18 00:02:35,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [68919319] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:02:35,822 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 00:02:35,823 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 29] total 40 [2021-12-18 00:02:35,823 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452090571] [2021-12-18 00:02:35,823 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 00:02:35,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2021-12-18 00:02:35,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:02:35,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2021-12-18 00:02:35,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=183, Invalid=2172, Unknown=1, NotChecked=94, Total=2450 [2021-12-18 00:02:35,824 INFO L87 Difference]: Start difference. First operand 510 states and 609 transitions. Second operand has 40 states, 36 states have (on average 4.888888888888889) internal successors, (176), 33 states have internal predecessors, (176), 15 states have call successors, (42), 10 states have call predecessors, (42), 10 states have return successors, (39), 12 states have call predecessors, (39), 14 states have call successors, (39) [2021-12-18 00:02:38,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:02:38,202 INFO L93 Difference]: Finished difference Result 781 states and 935 transitions. [2021-12-18 00:02:38,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-12-18 00:02:38,202 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 36 states have (on average 4.888888888888889) internal successors, (176), 33 states have internal predecessors, (176), 15 states have call successors, (42), 10 states have call predecessors, (42), 10 states have return successors, (39), 12 states have call predecessors, (39), 14 states have call successors, (39) Word has length 173 [2021-12-18 00:02:38,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:02:38,204 INFO L225 Difference]: With dead ends: 781 [2021-12-18 00:02:38,204 INFO L226 Difference]: Without dead ends: 576 [2021-12-18 00:02:38,205 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 335 GetRequests, 250 SyntacticMatches, 8 SemanticMatches, 77 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1839 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=421, Invalid=5588, Unknown=1, NotChecked=152, Total=6162 [2021-12-18 00:02:38,205 INFO L933 BasicCegarLoop]: 146 mSDtfsCounter, 190 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 1115 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 1534 SdHoareTripleChecker+Invalid, 1957 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 1115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 676 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-18 00:02:38,205 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [192 Valid, 1534 Invalid, 1957 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 1115 Invalid, 0 Unknown, 676 Unchecked, 0.6s Time] [2021-12-18 00:02:38,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 576 states. [2021-12-18 00:02:38,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 576 to 507. [2021-12-18 00:02:38,227 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 507 states, 361 states have (on average 1.077562326869806) internal successors, (389), 367 states have internal predecessors, (389), 92 states have call successors, (92), 48 states have call predecessors, (92), 53 states have return successors, (126), 91 states have call predecessors, (126), 90 states have call successors, (126) [2021-12-18 00:02:38,229 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 507 states to 507 states and 607 transitions. [2021-12-18 00:02:38,229 INFO L78 Accepts]: Start accepts. Automaton has 507 states and 607 transitions. Word has length 173 [2021-12-18 00:02:38,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:02:38,229 INFO L470 AbstractCegarLoop]: Abstraction has 507 states and 607 transitions. [2021-12-18 00:02:38,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 36 states have (on average 4.888888888888889) internal successors, (176), 33 states have internal predecessors, (176), 15 states have call successors, (42), 10 states have call predecessors, (42), 10 states have return successors, (39), 12 states have call predecessors, (39), 14 states have call successors, (39) [2021-12-18 00:02:38,229 INFO L276 IsEmpty]: Start isEmpty. Operand 507 states and 607 transitions. [2021-12-18 00:02:38,231 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 169 [2021-12-18 00:02:38,231 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:02:38,231 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:02:38,261 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-12-18 00:02:38,452 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2021-12-18 00:02:38,452 INFO L402 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:02:38,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:02:38,452 INFO L85 PathProgramCache]: Analyzing trace with hash 1909091545, now seen corresponding path program 1 times [2021-12-18 00:02:38,452 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:02:38,453 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413832852] [2021-12-18 00:02:38,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:02:38,453 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:02:39,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:02:39,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:02:39,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 00:02:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:39,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 00:02:39,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:02:39,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:02:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:02:39,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:02:39,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:39,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 00:02:39,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:39,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 00:02:39,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 00:02:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 00:02:39,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 00:02:39,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-18 00:02:39,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-18 00:02:39,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:39,898 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2021-12-18 00:02:39,898 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:02:39,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413832852] [2021-12-18 00:02:39,898 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413832852] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:02:39,898 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 00:02:39,898 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-12-18 00:02:39,898 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [118780937] [2021-12-18 00:02:39,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:02:39,898 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-18 00:02:39,898 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:02:39,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-18 00:02:39,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=366, Unknown=0, NotChecked=0, Total=420 [2021-12-18 00:02:39,899 INFO L87 Difference]: Start difference. First operand 507 states and 607 transitions. Second operand has 21 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 17 states have internal predecessors, (62), 11 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2021-12-18 00:02:41,099 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:02:41,099 INFO L93 Difference]: Finished difference Result 517 states and 621 transitions. [2021-12-18 00:02:41,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-12-18 00:02:41,100 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 17 states have internal predecessors, (62), 11 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) Word has length 168 [2021-12-18 00:02:41,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:02:41,102 INFO L225 Difference]: With dead ends: 517 [2021-12-18 00:02:41,102 INFO L226 Difference]: Without dead ends: 515 [2021-12-18 00:02:41,102 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=125, Invalid=745, Unknown=0, NotChecked=0, Total=870 [2021-12-18 00:02:41,103 INFO L933 BasicCegarLoop]: 138 mSDtfsCounter, 322 mSDsluCounter, 432 mSDsCounter, 0 mSdLazyCounter, 1407 mSolverCounterSat, 320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 333 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 1727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 320 IncrementalHoareTripleChecker+Valid, 1407 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-18 00:02:41,103 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [333 Valid, 570 Invalid, 1727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [320 Valid, 1407 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-18 00:02:41,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 515 states. [2021-12-18 00:02:41,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 515 to 511. [2021-12-18 00:02:41,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 364 states have (on average 1.0769230769230769) internal successors, (392), 370 states have internal predecessors, (392), 92 states have call successors, (92), 49 states have call predecessors, (92), 54 states have return successors, (126), 91 states have call predecessors, (126), 90 states have call successors, (126) [2021-12-18 00:02:41,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 610 transitions. [2021-12-18 00:02:41,127 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 610 transitions. Word has length 168 [2021-12-18 00:02:41,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:02:41,128 INFO L470 AbstractCegarLoop]: Abstraction has 511 states and 610 transitions. [2021-12-18 00:02:41,128 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 3.4444444444444446) internal successors, (62), 17 states have internal predecessors, (62), 11 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 10 states have call predecessors, (18), 10 states have call successors, (18) [2021-12-18 00:02:41,128 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 610 transitions. [2021-12-18 00:02:41,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-18 00:02:41,130 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:02:41,130 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:02:41,130 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2021-12-18 00:02:41,130 INFO L402 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:02:41,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:02:41,131 INFO L85 PathProgramCache]: Analyzing trace with hash 978298422, now seen corresponding path program 1 times [2021-12-18 00:02:41,131 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:02:41,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195603029] [2021-12-18 00:02:41,131 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:02:41,131 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:02:41,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:02:41,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:02:41,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 00:02:41,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:41,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 00:02:41,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:02:41,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:02:41,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 00:02:41,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 00:02:41,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-18 00:02:41,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:41,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-18 00:02:41,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:02:41,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 00:02:41,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 00:02:41,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 00:02:41,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 00:02:41,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-18 00:02:41,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:41,701 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 20 proven. 32 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2021-12-18 00:02:41,701 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:02:41,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195603029] [2021-12-18 00:02:41,701 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1195603029] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:02:41,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [901502026] [2021-12-18 00:02:41,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:02:41,701 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:02:41,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:02:41,702 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:02:41,703 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2021-12-18 00:02:42,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:02:42,176 INFO L263 TraceCheckSpWp]: Trace formula consists of 2877 conjuncts, 110 conjunts are in the unsatisfiable core [2021-12-18 00:02:42,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:02:42,185 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 00:02:42,353 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-18 00:02:42,414 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:02:42,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-18 00:02:43,047 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:02:43,048 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:02:43,076 INFO L354 Elim1Store]: treesize reduction 66, result has 26.7 percent of original size [2021-12-18 00:02:43,076 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 5 case distinctions, treesize of input 29 treesize of output 42 [2021-12-18 00:02:43,212 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-18 00:02:43,213 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 31 [2021-12-18 00:02:47,818 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-18 00:02:47,819 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 31 [2021-12-18 00:02:47,939 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:02:47,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:02:47,940 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:02:47,958 INFO L354 Elim1Store]: treesize reduction 20, result has 39.4 percent of original size [2021-12-18 00:02:47,958 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 6 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 28 [2021-12-18 00:02:47,973 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-18 00:02:47,973 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 31 [2021-12-18 00:03:00,676 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-18 00:03:00,676 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 31 [2021-12-18 00:03:01,447 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-18 00:03:01,447 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 39 treesize of output 19 [2021-12-18 00:03:01,463 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 39 proven. 149 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2021-12-18 00:03:01,463 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:03:02,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [901502026] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:03:02,034 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 00:03:02,034 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 26] total 41 [2021-12-18 00:03:02,034 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082262990] [2021-12-18 00:03:02,034 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 00:03:02,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2021-12-18 00:03:02,035 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:03:02,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2021-12-18 00:03:02,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=189, Invalid=2064, Unknown=3, NotChecked=0, Total=2256 [2021-12-18 00:03:02,036 INFO L87 Difference]: Start difference. First operand 511 states and 610 transitions. Second operand has 41 states, 38 states have (on average 4.947368421052632) internal successors, (188), 35 states have internal predecessors, (188), 17 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (35), 14 states have call predecessors, (35), 17 states have call successors, (35) [2021-12-18 00:03:06,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:03:06,997 INFO L93 Difference]: Finished difference Result 710 states and 859 transitions. [2021-12-18 00:03:06,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 53 states. [2021-12-18 00:03:06,997 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 38 states have (on average 4.947368421052632) internal successors, (188), 35 states have internal predecessors, (188), 17 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (35), 14 states have call predecessors, (35), 17 states have call successors, (35) Word has length 169 [2021-12-18 00:03:06,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:03:07,000 INFO L225 Difference]: With dead ends: 710 [2021-12-18 00:03:07,000 INFO L226 Difference]: Without dead ends: 630 [2021-12-18 00:03:07,001 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 244 SyntacticMatches, 24 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2270 ImplicationChecksByTransitivity, 21.5s TimeCoverageRelationStatistics Valid=662, Invalid=5814, Unknown=4, NotChecked=0, Total=6480 [2021-12-18 00:03:07,001 INFO L933 BasicCegarLoop]: 201 mSDtfsCounter, 339 mSDsluCounter, 1252 mSDsCounter, 0 mSdLazyCounter, 2512 mSolverCounterSat, 243 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 352 SdHoareTripleChecker+Valid, 1453 SdHoareTripleChecker+Invalid, 4491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 243 IncrementalHoareTripleChecker+Valid, 2512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1736 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-18 00:03:07,001 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [352 Valid, 1453 Invalid, 4491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [243 Valid, 2512 Invalid, 0 Unknown, 1736 Unchecked, 1.5s Time] [2021-12-18 00:03:07,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 630 states. [2021-12-18 00:03:07,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 630 to 606. [2021-12-18 00:03:07,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 606 states, 440 states have (on average 1.0704545454545455) internal successors, (471), 446 states have internal predecessors, (471), 102 states have call successors, (102), 56 states have call predecessors, (102), 63 states have return successors, (144), 103 states have call predecessors, (144), 100 states have call successors, (144) [2021-12-18 00:03:07,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 606 states to 606 states and 717 transitions. [2021-12-18 00:03:07,030 INFO L78 Accepts]: Start accepts. Automaton has 606 states and 717 transitions. Word has length 169 [2021-12-18 00:03:07,030 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:03:07,030 INFO L470 AbstractCegarLoop]: Abstraction has 606 states and 717 transitions. [2021-12-18 00:03:07,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 38 states have (on average 4.947368421052632) internal successors, (188), 35 states have internal predecessors, (188), 17 states have call successors, (36), 12 states have call predecessors, (36), 12 states have return successors, (35), 14 states have call predecessors, (35), 17 states have call successors, (35) [2021-12-18 00:03:07,031 INFO L276 IsEmpty]: Start isEmpty. Operand 606 states and 717 transitions. [2021-12-18 00:03:07,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-18 00:03:07,032 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:03:07,033 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:03:07,058 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2021-12-18 00:03:07,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2021-12-18 00:03:07,247 INFO L402 AbstractCegarLoop]: === Iteration 39 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:03:07,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:03:07,248 INFO L85 PathProgramCache]: Analyzing trace with hash -928104844, now seen corresponding path program 2 times [2021-12-18 00:03:07,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:03:07,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435317068] [2021-12-18 00:03:07,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:03:07,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:03:07,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:03:07,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:03:07,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 00:03:07,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:07,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 00:03:07,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:03:07,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:03:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 00:03:07,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 00:03:07,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-18 00:03:07,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:07,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-18 00:03:07,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:07,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 00:03:07,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 00:03:07,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 00:03:07,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 00:03:07,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-18 00:03:07,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:07,946 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 36 proven. 39 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2021-12-18 00:03:07,946 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:03:07,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435317068] [2021-12-18 00:03:07,946 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435317068] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:03:07,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816439549] [2021-12-18 00:03:07,946 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 00:03:07,946 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:03:07,946 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:03:07,947 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:03:07,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2021-12-18 00:03:08,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 00:03:08,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 00:03:08,886 INFO L263 TraceCheckSpWp]: Trace formula consists of 2882 conjuncts, 93 conjunts are in the unsatisfiable core [2021-12-18 00:03:08,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:03:08,894 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 00:03:09,059 INFO L354 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2021-12-18 00:03:09,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2021-12-18 00:03:09,190 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-12-18 00:03:09,191 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2021-12-18 00:03:09,374 INFO L354 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2021-12-18 00:03:09,374 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 00:03:17,803 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 28 treesize of output 28 [2021-12-18 00:03:18,493 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 42 proven. 127 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2021-12-18 00:03:18,493 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:03:19,524 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_3660 (Array Int Int))) (not (= 0 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_write_be64_~#x#1.base| v_ArrVal_3660) |c_ULTIMATE.start_aws_byte_buf_write_be64_~buf#1.base|) |c_ULTIMATE.start_aws_byte_buf_write_be64_~buf#1.offset|) 18446744073709551616)))) is different from false [2021-12-18 00:03:19,530 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816439549] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:03:19,530 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 00:03:19,531 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 31] total 45 [2021-12-18 00:03:19,531 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931251812] [2021-12-18 00:03:19,531 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 00:03:19,531 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-12-18 00:03:19,531 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:03:19,531 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-12-18 00:03:19,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=2687, Unknown=3, NotChecked=104, Total=2970 [2021-12-18 00:03:19,532 INFO L87 Difference]: Start difference. First operand 606 states and 717 transitions. Second operand has 45 states, 40 states have (on average 4.075) internal successors, (163), 41 states have internal predecessors, (163), 17 states have call successors, (35), 10 states have call predecessors, (35), 14 states have return successors, (35), 14 states have call predecessors, (35), 17 states have call successors, (35) [2021-12-18 00:03:25,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:03:25,383 INFO L93 Difference]: Finished difference Result 740 states and 892 transitions. [2021-12-18 00:03:25,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 64 states. [2021-12-18 00:03:25,383 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 40 states have (on average 4.075) internal successors, (163), 41 states have internal predecessors, (163), 17 states have call successors, (35), 10 states have call predecessors, (35), 14 states have return successors, (35), 14 states have call predecessors, (35), 17 states have call successors, (35) Word has length 169 [2021-12-18 00:03:25,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:03:25,385 INFO L225 Difference]: With dead ends: 740 [2021-12-18 00:03:25,385 INFO L226 Difference]: Without dead ends: 641 [2021-12-18 00:03:25,386 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 368 GetRequests, 241 SyntacticMatches, 23 SemanticMatches, 104 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2607 ImplicationChecksByTransitivity, 13.6s TimeCoverageRelationStatistics Valid=882, Invalid=10038, Unknown=4, NotChecked=206, Total=11130 [2021-12-18 00:03:25,387 INFO L933 BasicCegarLoop]: 159 mSDtfsCounter, 369 mSDsluCounter, 1934 mSDsCounter, 0 mSdLazyCounter, 3719 mSolverCounterSat, 314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 382 SdHoareTripleChecker+Valid, 2093 SdHoareTripleChecker+Invalid, 5386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 3719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1353 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-18 00:03:25,387 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [382 Valid, 2093 Invalid, 5386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [314 Valid, 3719 Invalid, 0 Unknown, 1353 Unchecked, 1.9s Time] [2021-12-18 00:03:25,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 641 states. [2021-12-18 00:03:25,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 641 to 612. [2021-12-18 00:03:25,415 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 612 states, 446 states have (on average 1.0672645739910314) internal successors, (476), 451 states have internal predecessors, (476), 100 states have call successors, (100), 58 states have call predecessors, (100), 65 states have return successors, (139), 102 states have call predecessors, (139), 97 states have call successors, (139) [2021-12-18 00:03:25,416 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 612 states to 612 states and 715 transitions. [2021-12-18 00:03:25,416 INFO L78 Accepts]: Start accepts. Automaton has 612 states and 715 transitions. Word has length 169 [2021-12-18 00:03:25,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:03:25,416 INFO L470 AbstractCegarLoop]: Abstraction has 612 states and 715 transitions. [2021-12-18 00:03:25,416 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 40 states have (on average 4.075) internal successors, (163), 41 states have internal predecessors, (163), 17 states have call successors, (35), 10 states have call predecessors, (35), 14 states have return successors, (35), 14 states have call predecessors, (35), 17 states have call successors, (35) [2021-12-18 00:03:25,417 INFO L276 IsEmpty]: Start isEmpty. Operand 612 states and 715 transitions. [2021-12-18 00:03:25,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-18 00:03:25,418 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:03:25,418 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:03:25,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2021-12-18 00:03:25,628 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2021-12-18 00:03:25,628 INFO L402 AbstractCegarLoop]: === Iteration 40 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:03:25,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:03:25,628 INFO L85 PathProgramCache]: Analyzing trace with hash -2123440582, now seen corresponding path program 1 times [2021-12-18 00:03:25,629 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:03:25,629 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000301882] [2021-12-18 00:03:25,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:03:25,629 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:03:25,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:26,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:03:26,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:26,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:03:26,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:26,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 00:03:26,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:26,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:26,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:26,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 00:03:26,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:26,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:03:26,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:26,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:03:26,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:26,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 00:03:26,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:26,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 00:03:26,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:26,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-18 00:03:26,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:26,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:26,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:26,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-18 00:03:26,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:26,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:26,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:26,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 00:03:26,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:26,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 00:03:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:26,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 00:03:26,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:26,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 00:03:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:26,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-18 00:03:26,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:26,785 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-12-18 00:03:26,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:03:26,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000301882] [2021-12-18 00:03:26,785 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000301882] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:03:26,785 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 00:03:26,785 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2021-12-18 00:03:26,785 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1023451242] [2021-12-18 00:03:26,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:03:26,786 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2021-12-18 00:03:26,786 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:03:26,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2021-12-18 00:03:26,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=497, Unknown=0, NotChecked=0, Total=552 [2021-12-18 00:03:26,787 INFO L87 Difference]: Start difference. First operand 612 states and 715 transitions. Second operand has 24 states, 21 states have (on average 3.0) internal successors, (63), 19 states have internal predecessors, (63), 12 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 10 states have call predecessors, (18), 11 states have call successors, (18) [2021-12-18 00:03:29,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:03:29,157 INFO L93 Difference]: Finished difference Result 657 states and 785 transitions. [2021-12-18 00:03:29,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2021-12-18 00:03:29,157 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 3.0) internal successors, (63), 19 states have internal predecessors, (63), 12 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 10 states have call predecessors, (18), 11 states have call successors, (18) Word has length 169 [2021-12-18 00:03:29,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:03:29,159 INFO L225 Difference]: With dead ends: 657 [2021-12-18 00:03:29,159 INFO L226 Difference]: Without dead ends: 655 [2021-12-18 00:03:29,160 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=201, Invalid=1281, Unknown=0, NotChecked=0, Total=1482 [2021-12-18 00:03:29,160 INFO L933 BasicCegarLoop]: 143 mSDtfsCounter, 320 mSDsluCounter, 532 mSDsCounter, 0 mSdLazyCounter, 2571 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 327 SdHoareTripleChecker+Valid, 675 SdHoareTripleChecker+Invalid, 2909 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 2571 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2021-12-18 00:03:29,160 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [327 Valid, 675 Invalid, 2909 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 2571 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2021-12-18 00:03:29,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 655 states. [2021-12-18 00:03:29,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 655 to 628. [2021-12-18 00:03:29,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 628 states, 456 states have (on average 1.0679824561403508) internal successors, (487), 462 states have internal predecessors, (487), 104 states have call successors, (104), 59 states have call predecessors, (104), 67 states have return successors, (144), 106 states have call predecessors, (144), 101 states have call successors, (144) [2021-12-18 00:03:29,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 628 states to 628 states and 735 transitions. [2021-12-18 00:03:29,190 INFO L78 Accepts]: Start accepts. Automaton has 628 states and 735 transitions. Word has length 169 [2021-12-18 00:03:29,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:03:29,191 INFO L470 AbstractCegarLoop]: Abstraction has 628 states and 735 transitions. [2021-12-18 00:03:29,191 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 3.0) internal successors, (63), 19 states have internal predecessors, (63), 12 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 10 states have call predecessors, (18), 11 states have call successors, (18) [2021-12-18 00:03:29,191 INFO L276 IsEmpty]: Start isEmpty. Operand 628 states and 735 transitions. [2021-12-18 00:03:29,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2021-12-18 00:03:29,193 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:03:29,193 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:03:29,193 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2021-12-18 00:03:29,193 INFO L402 AbstractCegarLoop]: === Iteration 41 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:03:29,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:03:29,193 INFO L85 PathProgramCache]: Analyzing trace with hash -1875294088, now seen corresponding path program 1 times [2021-12-18 00:03:29,194 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:03:29,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [288575458] [2021-12-18 00:03:29,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:03:29,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:03:29,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:30,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:03:30,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:30,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:03:30,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:30,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 00:03:30,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:30,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:30,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:30,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 00:03:30,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:30,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:03:30,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:30,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:03:30,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:30,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 00:03:30,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:30,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 00:03:30,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:30,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-18 00:03:30,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:30,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:30,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:30,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-18 00:03:30,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:30,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:30,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:30,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 00:03:30,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:30,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 00:03:30,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:30,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 00:03:30,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:30,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 00:03:30,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:30,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-18 00:03:30,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:30,335 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2021-12-18 00:03:30,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:03:30,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [288575458] [2021-12-18 00:03:30,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [288575458] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:03:30,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 00:03:30,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2021-12-18 00:03:30,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144963618] [2021-12-18 00:03:30,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:03:30,336 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2021-12-18 00:03:30,336 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:03:30,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2021-12-18 00:03:30,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=364, Unknown=0, NotChecked=0, Total=420 [2021-12-18 00:03:30,336 INFO L87 Difference]: Start difference. First operand 628 states and 735 transitions. Second operand has 21 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 16 states have internal predecessors, (63), 10 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) [2021-12-18 00:03:31,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:03:31,931 INFO L93 Difference]: Finished difference Result 655 states and 781 transitions. [2021-12-18 00:03:31,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2021-12-18 00:03:31,931 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 16 states have internal predecessors, (63), 10 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) Word has length 169 [2021-12-18 00:03:31,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:03:31,933 INFO L225 Difference]: With dead ends: 655 [2021-12-18 00:03:31,934 INFO L226 Difference]: Without dead ends: 653 [2021-12-18 00:03:31,934 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 149 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=150, Invalid=842, Unknown=0, NotChecked=0, Total=992 [2021-12-18 00:03:31,934 INFO L933 BasicCegarLoop]: 120 mSDtfsCounter, 263 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 1661 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 271 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 1941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 1661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-12-18 00:03:31,934 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [271 Valid, 436 Invalid, 1941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 1661 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-12-18 00:03:31,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 653 states. [2021-12-18 00:03:31,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 653 to 620. [2021-12-18 00:03:31,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 620 states, 451 states have (on average 1.0687361419068737) internal successors, (482), 457 states have internal predecessors, (482), 102 states have call successors, (102), 59 states have call predecessors, (102), 66 states have return successors, (141), 103 states have call predecessors, (141), 99 states have call successors, (141) [2021-12-18 00:03:31,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 620 states to 620 states and 725 transitions. [2021-12-18 00:03:31,968 INFO L78 Accepts]: Start accepts. Automaton has 620 states and 725 transitions. Word has length 169 [2021-12-18 00:03:31,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:03:31,968 INFO L470 AbstractCegarLoop]: Abstraction has 620 states and 725 transitions. [2021-12-18 00:03:31,968 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 19 states have (on average 3.3157894736842106) internal successors, (63), 16 states have internal predecessors, (63), 10 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (18), 9 states have call predecessors, (18), 9 states have call successors, (18) [2021-12-18 00:03:31,969 INFO L276 IsEmpty]: Start isEmpty. Operand 620 states and 725 transitions. [2021-12-18 00:03:31,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2021-12-18 00:03:31,970 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:03:31,970 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:03:31,970 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2021-12-18 00:03:31,971 INFO L402 AbstractCegarLoop]: === Iteration 42 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:03:31,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:03:31,971 INFO L85 PathProgramCache]: Analyzing trace with hash 691194214, now seen corresponding path program 1 times [2021-12-18 00:03:31,971 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:03:31,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602208423] [2021-12-18 00:03:31,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:03:31,971 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:03:32,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:32,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:03:32,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:32,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:03:32,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:32,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 00:03:32,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:32,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:32,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:32,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 00:03:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:32,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:03:32,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:32,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:03:32,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:32,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 00:03:32,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:32,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 00:03:32,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:32,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-18 00:03:32,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:32,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:32,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:32,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2021-12-18 00:03:32,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:32,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2021-12-18 00:03:32,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:32,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2021-12-18 00:03:32,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:32,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2021-12-18 00:03:32,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:32,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:32,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:32,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:03:32,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:32,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:03:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:32,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 00:03:32,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:32,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 161 [2021-12-18 00:03:32,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:32,382 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2021-12-18 00:03:32,382 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:03:32,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1602208423] [2021-12-18 00:03:32,382 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1602208423] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:03:32,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1140734429] [2021-12-18 00:03:32,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:03:32,383 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:03:32,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:03:32,387 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:03:32,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2021-12-18 00:03:32,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:03:32,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 2983 conjuncts, 155 conjunts are in the unsatisfiable core [2021-12-18 00:03:32,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:03:32,911 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 00:03:33,108 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-18 00:03:33,188 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:03:33,188 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2021-12-18 00:03:33,222 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 00:03:33,228 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 00:03:33,793 INFO L354 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2021-12-18 00:03:33,794 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2021-12-18 00:03:33,885 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 19 treesize of output 21 [2021-12-18 00:03:33,892 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 29 treesize of output 29 [2021-12-18 00:03:34,285 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2021-12-18 00:03:34,290 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2021-12-18 00:03:34,395 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:03:34,396 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 25 [2021-12-18 00:03:34,409 INFO L354 Elim1Store]: treesize reduction 12, result has 52.0 percent of original size [2021-12-18 00:03:34,410 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 21 treesize of output 25 [2021-12-18 00:03:34,415 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2021-12-18 00:03:59,505 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_write_be64_~buf#1.base_BEFORE_CALL_49| Int)) (and (< (+ (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_be64_~buf#1.base_BEFORE_CALL_49|) 8) 1) |v_ULTIMATE.start_aws_byte_buf_write_be64_~buf#1.base_BEFORE_CALL_49|) (not (= 0 (mod (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_be64_~buf#1.base_BEFORE_CALL_49|) 16) 18446744073709551616))))) is different from true [2021-12-18 00:03:59,602 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 [2021-12-18 00:03:59,606 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 21 treesize of output 20 [2021-12-18 00:04:11,455 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_aws_byte_buf_write_~buf.base_BEFORE_CALL_84 Int)) (and (< (+ (select (select |c_#memory_$Pointer$.base| v_aws_byte_buf_write_~buf.base_BEFORE_CALL_84) 8) 1) v_aws_byte_buf_write_~buf.base_BEFORE_CALL_84) (not (= 0 (mod (select (select |c_#memory_int| v_aws_byte_buf_write_~buf.base_BEFORE_CALL_84) 16) 18446744073709551616))))) is different from true [2021-12-18 00:04:30,982 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4026 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_memcpy_impl_#in~dst.base| v_ArrVal_4026))) is different from true [2021-12-18 00:04:30,996 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4026 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_my_memcpy_#in~dst.base| v_ArrVal_4026))) is different from true [2021-12-18 00:04:31,008 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 00:04:31,008 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 12 [2021-12-18 00:04:31,010 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:04:31,011 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2021-12-18 00:04:33,067 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 [2021-12-18 00:04:41,432 INFO L134 CoverageAnalysis]: Checked inductivity of 280 backedges. 24 proven. 179 refuted. 25 times theorem prover too weak. 29 trivial. 23 not checked. [2021-12-18 00:04:41,433 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:04:41,827 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4035 (Array Int Int))) (not (= 0 (mod (select (select (store |c_#memory_int| |c_aws_byte_buf_write_#t~mem1173.base| v_ArrVal_4035) c_aws_byte_buf_write_~buf.base) (+ c_aws_byte_buf_write_~buf.offset 16)) 18446744073709551616)))) is different from false [2021-12-18 00:04:41,828 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1140734429] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:04:41,828 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 00:04:41,828 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 42] total 54 [2021-12-18 00:04:41,829 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [742984760] [2021-12-18 00:04:41,829 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 00:04:41,829 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 54 states [2021-12-18 00:04:41,829 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:04:41,829 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 54 interpolants. [2021-12-18 00:04:41,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=208, Invalid=2657, Unknown=17, NotChecked=540, Total=3422 [2021-12-18 00:04:41,830 INFO L87 Difference]: Start difference. First operand 620 states and 725 transitions. Second operand has 54 states, 49 states have (on average 3.8979591836734695) internal successors, (191), 44 states have internal predecessors, (191), 20 states have call successors, (43), 17 states have call predecessors, (43), 15 states have return successors, (40), 17 states have call predecessors, (40), 19 states have call successors, (40) [2021-12-18 00:05:20,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:05:20,614 INFO L93 Difference]: Finished difference Result 820 states and 979 transitions. [2021-12-18 00:05:20,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2021-12-18 00:05:20,614 INFO L78 Accepts]: Start accepts. Automaton has has 54 states, 49 states have (on average 3.8979591836734695) internal successors, (191), 44 states have internal predecessors, (191), 20 states have call successors, (43), 17 states have call predecessors, (43), 15 states have return successors, (40), 17 states have call predecessors, (40), 19 states have call successors, (40) Word has length 181 [2021-12-18 00:05:20,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:05:20,616 INFO L225 Difference]: With dead ends: 820 [2021-12-18 00:05:20,616 INFO L226 Difference]: Without dead ends: 666 [2021-12-18 00:05:20,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 287 GetRequests, 183 SyntacticMatches, 18 SemanticMatches, 86 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 2231 ImplicationChecksByTransitivity, 105.2s TimeCoverageRelationStatistics Valid=503, Invalid=6284, Unknown=39, NotChecked=830, Total=7656 [2021-12-18 00:05:20,618 INFO L933 BasicCegarLoop]: 187 mSDtfsCounter, 233 mSDsluCounter, 2314 mSDsCounter, 0 mSdLazyCounter, 1658 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 2501 SdHoareTripleChecker+Invalid, 4104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 1658 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2246 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-18 00:05:20,618 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 2501 Invalid, 4104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 1658 Invalid, 0 Unknown, 2246 Unchecked, 0.9s Time] [2021-12-18 00:05:20,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2021-12-18 00:05:20,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 655. [2021-12-18 00:05:20,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 655 states, 478 states have (on average 1.0627615062761506) internal successors, (508), 488 states have internal predecessors, (508), 106 states have call successors, (106), 60 states have call predecessors, (106), 70 states have return successors, (138), 106 states have call predecessors, (138), 103 states have call successors, (138) [2021-12-18 00:05:20,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 655 states to 655 states and 752 transitions. [2021-12-18 00:05:20,661 INFO L78 Accepts]: Start accepts. Automaton has 655 states and 752 transitions. Word has length 181 [2021-12-18 00:05:20,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:05:20,661 INFO L470 AbstractCegarLoop]: Abstraction has 655 states and 752 transitions. [2021-12-18 00:05:20,661 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 54 states, 49 states have (on average 3.8979591836734695) internal successors, (191), 44 states have internal predecessors, (191), 20 states have call successors, (43), 17 states have call predecessors, (43), 15 states have return successors, (40), 17 states have call predecessors, (40), 19 states have call successors, (40) [2021-12-18 00:05:20,661 INFO L276 IsEmpty]: Start isEmpty. Operand 655 states and 752 transitions. [2021-12-18 00:05:20,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2021-12-18 00:05:20,663 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:05:20,663 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:05:20,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2021-12-18 00:05:20,870 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:05:20,870 INFO L402 AbstractCegarLoop]: === Iteration 43 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:05:20,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:05:20,870 INFO L85 PathProgramCache]: Analyzing trace with hash 360022195, now seen corresponding path program 1 times [2021-12-18 00:05:20,870 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:05:20,870 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1005375008] [2021-12-18 00:05:20,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:05:20,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:05:21,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:21,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:05:21,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:21,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:05:21,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:21,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 00:05:21,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:21,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:05:21,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:21,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 00:05:21,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:21,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:05:21,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:21,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:05:21,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:21,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:05:21,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:21,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:05:21,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:21,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:05:21,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:21,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 00:05:21,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:21,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:05:21,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:21,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 00:05:21,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:21,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 00:05:21,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:21,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 00:05:21,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:21,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 00:05:21,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:21,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2021-12-18 00:05:21,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:21,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2021-12-18 00:05:21,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:21,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2021-12-18 00:05:21,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:21,991 INFO L134 CoverageAnalysis]: Checked inductivity of 194 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2021-12-18 00:05:21,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:05:21,992 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1005375008] [2021-12-18 00:05:21,992 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1005375008] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:05:21,992 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 00:05:21,992 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-12-18 00:05:21,992 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261087206] [2021-12-18 00:05:21,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:05:21,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-12-18 00:05:21,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:05:21,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-12-18 00:05:21,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2021-12-18 00:05:21,994 INFO L87 Difference]: Start difference. First operand 655 states and 752 transitions. Second operand has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 15 states have internal predecessors, (63), 9 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) [2021-12-18 00:05:23,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:05:23,210 INFO L93 Difference]: Finished difference Result 665 states and 765 transitions. [2021-12-18 00:05:23,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-18 00:05:23,211 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 15 states have internal predecessors, (63), 9 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) Word has length 174 [2021-12-18 00:05:23,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:05:23,213 INFO L225 Difference]: With dead ends: 665 [2021-12-18 00:05:23,213 INFO L226 Difference]: Without dead ends: 663 [2021-12-18 00:05:23,213 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 103 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=588, Unknown=0, NotChecked=0, Total=702 [2021-12-18 00:05:23,213 INFO L933 BasicCegarLoop]: 119 mSDtfsCounter, 236 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 1697 mSolverCounterSat, 238 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 1935 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 238 IncrementalHoareTripleChecker+Valid, 1697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2021-12-18 00:05:23,214 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [247 Valid, 490 Invalid, 1935 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [238 Valid, 1697 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2021-12-18 00:05:23,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 663 states. [2021-12-18 00:05:23,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 663 to 659. [2021-12-18 00:05:23,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 659 states, 481 states have (on average 1.0623700623700623) internal successors, (511), 491 states have internal predecessors, (511), 106 states have call successors, (106), 61 states have call predecessors, (106), 71 states have return successors, (138), 106 states have call predecessors, (138), 103 states have call successors, (138) [2021-12-18 00:05:23,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 659 states to 659 states and 755 transitions. [2021-12-18 00:05:23,244 INFO L78 Accepts]: Start accepts. Automaton has 659 states and 755 transitions. Word has length 174 [2021-12-18 00:05:23,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:05:23,245 INFO L470 AbstractCegarLoop]: Abstraction has 659 states and 755 transitions. [2021-12-18 00:05:23,245 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.7058823529411766) internal successors, (63), 15 states have internal predecessors, (63), 9 states have call successors, (20), 4 states have call predecessors, (20), 3 states have return successors, (19), 8 states have call predecessors, (19), 8 states have call successors, (19) [2021-12-18 00:05:23,245 INFO L276 IsEmpty]: Start isEmpty. Operand 659 states and 755 transitions. [2021-12-18 00:05:23,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2021-12-18 00:05:23,246 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:05:23,246 INFO L514 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:05:23,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2021-12-18 00:05:23,247 INFO L402 AbstractCegarLoop]: === Iteration 44 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:05:23,247 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:05:23,247 INFO L85 PathProgramCache]: Analyzing trace with hash 822160141, now seen corresponding path program 1 times [2021-12-18 00:05:23,247 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:05:23,247 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716476881] [2021-12-18 00:05:23,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:05:23,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:05:23,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:23,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:05:23,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:23,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:05:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:23,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 00:05:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:23,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:05:23,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:23,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 00:05:23,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:23,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:05:23,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:23,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:05:23,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:23,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:05:23,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:23,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:05:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:23,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:05:23,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:23,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2021-12-18 00:05:23,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:23,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:05:23,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:23,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 00:05:23,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:23,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 00:05:23,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:23,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 00:05:23,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:23,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 00:05:23,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:23,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2021-12-18 00:05:23,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:23,485 INFO L134 CoverageAnalysis]: Checked inductivity of 224 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 222 trivial. 0 not checked. [2021-12-18 00:05:23,485 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:05:23,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716476881] [2021-12-18 00:05:23,485 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716476881] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 00:05:23,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 00:05:23,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-12-18 00:05:23,486 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778436400] [2021-12-18 00:05:23,486 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 00:05:23,486 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 00:05:23,486 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:05:23,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 00:05:23,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2021-12-18 00:05:23,487 INFO L87 Difference]: Start difference. First operand 659 states and 755 transitions. Second operand has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 7 states have internal predecessors, (62), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2021-12-18 00:05:23,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:05:23,958 INFO L93 Difference]: Finished difference Result 713 states and 819 transitions. [2021-12-18 00:05:23,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-12-18 00:05:23,958 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 7 states have internal predecessors, (62), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) Word has length 173 [2021-12-18 00:05:23,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:05:23,960 INFO L225 Difference]: With dead ends: 713 [2021-12-18 00:05:23,960 INFO L226 Difference]: Without dead ends: 636 [2021-12-18 00:05:23,960 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-12-18 00:05:23,961 INFO L933 BasicCegarLoop]: 121 mSDtfsCounter, 159 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 676 mSolverCounterSat, 124 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 303 SdHoareTripleChecker+Invalid, 800 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 124 IncrementalHoareTripleChecker+Valid, 676 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-12-18 00:05:23,961 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [166 Valid, 303 Invalid, 800 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [124 Valid, 676 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-12-18 00:05:23,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2021-12-18 00:05:23,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 616. [2021-12-18 00:05:23,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 616 states, 454 states have (on average 1.052863436123348) internal successors, (478), 463 states have internal predecessors, (478), 96 states have call successors, (96), 57 states have call predecessors, (96), 65 states have return successors, (122), 95 states have call predecessors, (122), 93 states have call successors, (122) [2021-12-18 00:05:23,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 616 states to 616 states and 696 transitions. [2021-12-18 00:05:23,989 INFO L78 Accepts]: Start accepts. Automaton has 616 states and 696 transitions. Word has length 173 [2021-12-18 00:05:23,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:05:23,990 INFO L470 AbstractCegarLoop]: Abstraction has 616 states and 696 transitions. [2021-12-18 00:05:23,990 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.888888888888889) internal successors, (62), 7 states have internal predecessors, (62), 5 states have call successors, (18), 4 states have call predecessors, (18), 2 states have return successors, (17), 5 states have call predecessors, (17), 5 states have call successors, (17) [2021-12-18 00:05:23,990 INFO L276 IsEmpty]: Start isEmpty. Operand 616 states and 696 transitions. [2021-12-18 00:05:23,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2021-12-18 00:05:23,992 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:05:23,992 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:05:23,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2021-12-18 00:05:23,992 INFO L402 AbstractCegarLoop]: === Iteration 45 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:05:23,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:05:23,993 INFO L85 PathProgramCache]: Analyzing trace with hash 527860593, now seen corresponding path program 1 times [2021-12-18 00:05:23,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:05:23,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [428814269] [2021-12-18 00:05:23,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:05:23,993 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:05:24,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:24,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:05:24,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:24,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:05:24,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:24,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 00:05:24,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:24,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:05:24,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:24,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 00:05:24,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:24,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:05:24,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:24,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:05:24,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:24,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2021-12-18 00:05:24,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:24,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2021-12-18 00:05:24,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:24,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:05:24,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:24,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2021-12-18 00:05:24,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:24,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2021-12-18 00:05:24,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:24,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2021-12-18 00:05:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:24,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2021-12-18 00:05:24,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:24,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:05:24,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:24,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:05:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:24,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:05:24,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:24,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 00:05:24,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:24,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2021-12-18 00:05:24,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:24,402 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-12-18 00:05:24,402 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:05:24,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [428814269] [2021-12-18 00:05:24,402 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [428814269] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:05:24,402 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803022478] [2021-12-18 00:05:24,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:05:24,403 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:05:24,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:05:24,408 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:05:24,409 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2021-12-18 00:05:24,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:05:24,919 INFO L263 TraceCheckSpWp]: Trace formula consists of 2947 conjuncts, 132 conjunts are in the unsatisfiable core [2021-12-18 00:05:24,924 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:05:24,928 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 00:05:25,142 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 00:05:25,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-18 00:05:25,169 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 00:05:25,172 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 00:05:27,195 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_write_be64_harness_~#buf~3#1.base_BEFORE_CALL_123| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_be64_harness_~#buf~3#1.base_BEFORE_CALL_123|) 8) |v_ULTIMATE.start_aws_byte_buf_write_be64_harness_~#buf~3#1.base_BEFORE_CALL_123|))) is different from true [2021-12-18 00:05:35,464 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_write_be64_harness_~#buf~3#1.base_BEFORE_CALL_124| Int)) (and (not (= 0 (mod (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_write_be64_harness_~#buf~3#1.base_BEFORE_CALL_124|) 16) 18446744073709551616))) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_be64_harness_~#buf~3#1.base_BEFORE_CALL_124|) 8) |v_ULTIMATE.start_aws_byte_buf_write_be64_harness_~#buf~3#1.base_BEFORE_CALL_124|)))) is different from true [2021-12-18 00:05:35,545 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 [2021-12-18 00:05:35,550 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 20 treesize of output 19 [2021-12-18 00:06:02,801 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 20 treesize of output 19 [2021-12-18 00:06:02,805 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 [2021-12-18 00:06:11,240 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_aws_byte_buf_write_~buf.base_BEFORE_CALL_90 Int)) (and (not (= (select (select |c_#memory_$Pointer$.base| v_aws_byte_buf_write_~buf.base_BEFORE_CALL_90) 8) v_aws_byte_buf_write_~buf.base_BEFORE_CALL_90)) (not (= 0 (mod (select (select |c_#memory_int| v_aws_byte_buf_write_~buf.base_BEFORE_CALL_90) 16) 18446744073709551616))))) is different from true [2021-12-18 00:06:13,319 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_aws_byte_buf_write_~buf.base_BEFORE_CALL_91 Int)) (and (not (= 0 (mod (select (select |c_#memory_int| v_aws_byte_buf_write_~buf.base_BEFORE_CALL_91) 16) 18446744073709551616))) (not (= (select (select |c_#memory_$Pointer$.base| v_aws_byte_buf_write_~buf.base_BEFORE_CALL_91) 8) v_aws_byte_buf_write_~buf.base_BEFORE_CALL_91)))) is different from true [2021-12-18 00:06:17,720 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4363 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_memcpy_impl_#in~dst.base| v_ArrVal_4363))) is different from true [2021-12-18 00:06:17,733 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4363 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_my_memcpy_#in~dst.base| v_ArrVal_4363))) is different from true [2021-12-18 00:06:17,743 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 00:06:17,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 11 [2021-12-18 00:06:17,748 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2021-12-18 00:06:17,831 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 [2021-12-18 00:06:26,352 INFO L134 CoverageAnalysis]: Checked inductivity of 249 backedges. 16 proven. 106 refuted. 40 times theorem prover too weak. 43 trivial. 44 not checked. [2021-12-18 00:06:26,353 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:06:26,708 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4373 (Array Int Int))) (not (= 0 (mod (select (select (store |c_#memory_int| |c_aws_byte_buf_write_#t~mem1173.base| v_ArrVal_4373) c_aws_byte_buf_write_~buf.base) (+ c_aws_byte_buf_write_~buf.offset 16)) 18446744073709551616)))) is different from false [2021-12-18 00:06:26,709 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803022478] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:06:26,709 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 00:06:26,709 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 36] total 49 [2021-12-18 00:06:26,709 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2143095553] [2021-12-18 00:06:26,709 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 00:06:26,709 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2021-12-18 00:06:26,710 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:06:26,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2021-12-18 00:06:26,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=2013, Unknown=16, NotChecked=672, Total=2862 [2021-12-18 00:06:26,710 INFO L87 Difference]: Start difference. First operand 616 states and 696 transitions. Second operand has 49 states, 44 states have (on average 3.9318181818181817) internal successors, (173), 40 states have internal predecessors, (173), 19 states have call successors, (41), 16 states have call predecessors, (41), 13 states have return successors, (38), 16 states have call predecessors, (38), 18 states have call successors, (38) [2021-12-18 00:07:32,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:07:32,517 INFO L93 Difference]: Finished difference Result 870 states and 1018 transitions. [2021-12-18 00:07:32,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2021-12-18 00:07:32,517 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 44 states have (on average 3.9318181818181817) internal successors, (173), 40 states have internal predecessors, (173), 19 states have call successors, (41), 16 states have call predecessors, (41), 13 states have return successors, (38), 16 states have call predecessors, (38), 18 states have call successors, (38) Word has length 176 [2021-12-18 00:07:32,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:07:32,519 INFO L225 Difference]: With dead ends: 870 [2021-12-18 00:07:32,519 INFO L226 Difference]: Without dead ends: 713 [2021-12-18 00:07:32,520 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 183 SyntacticMatches, 22 SemanticMatches, 84 ConstructedPredicates, 7 IntricatePredicates, 0 DeprecatedPredicates, 1693 ImplicationChecksByTransitivity, 125.9s TimeCoverageRelationStatistics Valid=490, Invalid=5655, Unknown=45, NotChecked=1120, Total=7310 [2021-12-18 00:07:32,521 INFO L933 BasicCegarLoop]: 185 mSDtfsCounter, 231 mSDsluCounter, 1963 mSDsCounter, 0 mSdLazyCounter, 1532 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 2148 SdHoareTripleChecker+Invalid, 4944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 1532 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3188 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-12-18 00:07:32,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [234 Valid, 2148 Invalid, 4944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 1532 Invalid, 0 Unknown, 3188 Unchecked, 0.8s Time] [2021-12-18 00:07:32,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 713 states. [2021-12-18 00:07:32,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 713 to 708. [2021-12-18 00:07:32,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 708 states, 524 states have (on average 1.047709923664122) internal successors, (549), 533 states have internal predecessors, (549), 109 states have call successors, (109), 67 states have call predecessors, (109), 74 states have return successors, (137), 107 states have call predecessors, (137), 106 states have call successors, (137) [2021-12-18 00:07:32,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 708 states to 708 states and 795 transitions. [2021-12-18 00:07:32,553 INFO L78 Accepts]: Start accepts. Automaton has 708 states and 795 transitions. Word has length 176 [2021-12-18 00:07:32,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:07:32,554 INFO L470 AbstractCegarLoop]: Abstraction has 708 states and 795 transitions. [2021-12-18 00:07:32,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 44 states have (on average 3.9318181818181817) internal successors, (173), 40 states have internal predecessors, (173), 19 states have call successors, (41), 16 states have call predecessors, (41), 13 states have return successors, (38), 16 states have call predecessors, (38), 18 states have call successors, (38) [2021-12-18 00:07:32,554 INFO L276 IsEmpty]: Start isEmpty. Operand 708 states and 795 transitions. [2021-12-18 00:07:32,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-18 00:07:32,556 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:07:32,556 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:07:32,579 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Forceful destruction successful, exit code 0 [2021-12-18 00:07:32,771 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:07:32,771 INFO L402 AbstractCegarLoop]: === Iteration 46 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:07:32,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:07:32,772 INFO L85 PathProgramCache]: Analyzing trace with hash -2114528170, now seen corresponding path program 1 times [2021-12-18 00:07:32,772 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:07:32,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [181119000] [2021-12-18 00:07:32,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:07:32,772 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:07:33,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:07:33,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:07:33,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:07:33,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:07:33,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:07:33,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 00:07:33,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:07:33,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:07:33,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:07:34,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 00:07:34,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:07:34,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:07:34,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:07:34,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:07:34,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:07:34,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 00:07:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:07:34,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 00:07:34,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:07:34,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-18 00:07:34,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:07:34,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:07:34,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:07:34,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-18 00:07:34,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:07:34,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:07:34,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:07:34,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 00:07:34,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:07:34,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 00:07:34,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:07:34,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 00:07:34,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:07:34,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 00:07:34,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:07:34,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-18 00:07:34,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:07:34,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-18 00:07:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:07:34,581 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 25 proven. 47 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2021-12-18 00:07:34,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:07:34,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [181119000] [2021-12-18 00:07:34,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [181119000] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:07:34,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [259645737] [2021-12-18 00:07:34,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:07:34,582 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:07:34,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:07:34,582 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:07:34,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-12-18 00:07:35,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:07:35,120 INFO L263 TraceCheckSpWp]: Trace formula consists of 2900 conjuncts, 157 conjunts are in the unsatisfiable core [2021-12-18 00:07:35,124 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:07:35,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:07:35,482 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 25 treesize of output 24 [2021-12-18 00:07:36,294 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-12-18 00:07:36,294 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-12-18 00:07:36,435 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:07:36,444 INFO L354 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2021-12-18 00:07:36,445 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 47 treesize of output 43 [2021-12-18 00:07:37,356 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:07:37,357 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:07:37,359 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-18 00:07:37,360 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 114 treesize of output 91 [2021-12-18 00:07:37,531 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:07:37,532 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:07:37,551 INFO L354 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-12-18 00:07:37,551 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 114 treesize of output 95 [2021-12-18 00:07:37,566 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 00:07:37,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-18 00:07:43,948 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:07:43,961 INFO L354 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2021-12-18 00:07:43,962 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 150 treesize of output 121 [2021-12-18 00:07:47,405 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_aws_byte_buf_write_#in~buf.base_BEFORE_CALL_35| Int) (|v_aws_byte_buf_write_#in~buf.offset_BEFORE_CALL_35| Int)) (let ((.cse0 (select |c_#memory_int| |v_aws_byte_buf_write_#in~buf.base_BEFORE_CALL_35|))) (<= (mod (select .cse0 |v_aws_byte_buf_write_#in~buf.offset_BEFORE_CALL_35|) 18446744073709551616) (mod (select .cse0 (+ |v_aws_byte_buf_write_#in~buf.offset_BEFORE_CALL_35| 16)) 18446744073709551616)))) is different from true [2021-12-18 00:07:47,583 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:07:47,586 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-18 00:07:47,587 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 234 treesize of output 148 [2021-12-18 00:07:47,642 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 45 proven. 148 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-12-18 00:07:47,642 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:07:48,363 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-12-18 00:07:48,364 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 73 treesize of output 45 [2021-12-18 00:07:48,935 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-12-18 00:07:48,935 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 1 [2021-12-18 00:07:48,988 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-12-18 00:07:48,988 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 1 [2021-12-18 00:07:49,026 INFO L354 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2021-12-18 00:07:49,026 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 71 treesize of output 1 [2021-12-18 00:07:49,260 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [259645737] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:07:49,260 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 00:07:49,260 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 43] total 71 [2021-12-18 00:07:49,260 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139782660] [2021-12-18 00:07:49,261 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 00:07:49,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 71 states [2021-12-18 00:07:49,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:07:49,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 71 interpolants. [2021-12-18 00:07:49,262 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=356, Invalid=6289, Unknown=1, NotChecked=160, Total=6806 [2021-12-18 00:07:49,262 INFO L87 Difference]: Start difference. First operand 708 states and 795 transitions. Second operand has 71 states, 62 states have (on average 3.0483870967741935) internal successors, (189), 60 states have internal predecessors, (189), 28 states have call successors, (39), 11 states have call predecessors, (39), 17 states have return successors, (38), 23 states have call predecessors, (38), 28 states have call successors, (38) [2021-12-18 00:09:02,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:09:02,166 INFO L93 Difference]: Finished difference Result 901 states and 1020 transitions. [2021-12-18 00:09:02,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2021-12-18 00:09:02,166 INFO L78 Accepts]: Start accepts. Automaton has has 71 states, 62 states have (on average 3.0483870967741935) internal successors, (189), 60 states have internal predecessors, (189), 28 states have call successors, (39), 11 states have call predecessors, (39), 17 states have return successors, (38), 23 states have call predecessors, (38), 28 states have call successors, (38) Word has length 175 [2021-12-18 00:09:02,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:09:02,169 INFO L225 Difference]: With dead ends: 901 [2021-12-18 00:09:02,169 INFO L226 Difference]: Without dead ends: 812 [2021-12-18 00:09:02,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 405 GetRequests, 247 SyntacticMatches, 13 SemanticMatches, 145 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 7581 ImplicationChecksByTransitivity, 77.7s TimeCoverageRelationStatistics Valid=1259, Invalid=19884, Unknown=31, NotChecked=288, Total=21462 [2021-12-18 00:09:02,170 INFO L933 BasicCegarLoop]: 157 mSDtfsCounter, 438 mSDsluCounter, 1187 mSDsCounter, 0 mSdLazyCounter, 4825 mSolverCounterSat, 382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 451 SdHoareTripleChecker+Valid, 1344 SdHoareTripleChecker+Invalid, 6854 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 382 IncrementalHoareTripleChecker+Valid, 4825 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1647 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2021-12-18 00:09:02,170 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [451 Valid, 1344 Invalid, 6854 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [382 Valid, 4825 Invalid, 0 Unknown, 1647 Unchecked, 3.3s Time] [2021-12-18 00:09:02,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 812 states. [2021-12-18 00:09:02,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 812 to 769. [2021-12-18 00:09:02,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 566 states have (on average 1.0530035335689045) internal successors, (596), 576 states have internal predecessors, (596), 121 states have call successors, (121), 73 states have call predecessors, (121), 81 states have return successors, (150), 119 states have call predecessors, (150), 117 states have call successors, (150) [2021-12-18 00:09:02,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 867 transitions. [2021-12-18 00:09:02,236 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 867 transitions. Word has length 175 [2021-12-18 00:09:02,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:09:02,236 INFO L470 AbstractCegarLoop]: Abstraction has 769 states and 867 transitions. [2021-12-18 00:09:02,236 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 71 states, 62 states have (on average 3.0483870967741935) internal successors, (189), 60 states have internal predecessors, (189), 28 states have call successors, (39), 11 states have call predecessors, (39), 17 states have return successors, (38), 23 states have call predecessors, (38), 28 states have call successors, (38) [2021-12-18 00:09:02,237 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 867 transitions. [2021-12-18 00:09:02,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2021-12-18 00:09:02,238 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:09:02,239 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:09:02,266 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-12-18 00:09:02,455 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable45 [2021-12-18 00:09:02,455 INFO L402 AbstractCegarLoop]: === Iteration 47 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:09:02,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:09:02,456 INFO L85 PathProgramCache]: Analyzing trace with hash -175366124, now seen corresponding path program 1 times [2021-12-18 00:09:02,457 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:09:02,457 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531564471] [2021-12-18 00:09:02,457 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:09:02,457 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:09:04,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:09:05,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:09:05,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:09:05,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:09:05,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:09:05,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-12-18 00:09:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:09:05,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:09:05,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:09:05,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2021-12-18 00:09:05,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:09:05,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2021-12-18 00:09:05,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:09:05,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2021-12-18 00:09:05,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:09:05,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2021-12-18 00:09:05,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:09:05,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2021-12-18 00:09:05,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:09:05,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2021-12-18 00:09:05,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:09:05,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:09:05,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:09:05,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-18 00:09:05,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:09:05,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:09:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:09:05,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-18 00:09:05,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:09:05,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-18 00:09:05,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:09:05,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2021-12-18 00:09:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:09:05,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2021-12-18 00:09:05,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:09:05,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2021-12-18 00:09:05,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:09:05,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-18 00:09:05,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:09:05,464 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 16 proven. 38 refuted. 0 times theorem prover too weak. 150 trivial. 0 not checked. [2021-12-18 00:09:05,464 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:09:05,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531564471] [2021-12-18 00:09:05,464 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531564471] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:09:05,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063095127] [2021-12-18 00:09:05,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:09:05,464 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:09:05,465 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:09:05,465 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:09:05,466 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2021-12-18 00:09:06,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:09:06,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 2905 conjuncts, 111 conjunts are in the unsatisfiable core [2021-12-18 00:09:06,800 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:09:06,827 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 00:09:07,098 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-12-18 00:09:07,209 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:09:07,209 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2021-12-18 00:09:07,554 INFO L354 Elim1Store]: treesize reduction 48, result has 23.8 percent of original size [2021-12-18 00:09:07,554 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 30 [2021-12-18 00:09:07,648 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-18 00:09:07,648 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 27 [2021-12-18 00:09:07,868 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-18 00:09:07,868 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 27 [2021-12-18 00:09:07,952 INFO L354 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2021-12-18 00:09:07,952 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 22 treesize of output 43 [2021-12-18 00:09:07,975 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 00:09:08,008 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-12-18 00:09:08,009 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 16 treesize of output 18 [2021-12-18 00:09:08,267 INFO L354 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2021-12-18 00:09:08,267 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 27 [2021-12-18 00:09:10,776 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_assert_byte_buf_equivalence_~lhs#1.base_BEFORE_CALL_2| Int) (|v_ULTIMATE.start_assert_byte_buf_equivalence_~rhs#1.base_BEFORE_CALL_2| Int)) (and (< 1 |v_ULTIMATE.start_assert_byte_buf_equivalence_~rhs#1.base_BEFORE_CALL_2|) (< 1 |v_ULTIMATE.start_assert_byte_buf_equivalence_~lhs#1.base_BEFORE_CALL_2|) (= (select (select |c_#memory_int| |v_ULTIMATE.start_assert_byte_buf_equivalence_~rhs#1.base_BEFORE_CALL_2|) 16) (select (select |c_#memory_int| |v_ULTIMATE.start_assert_byte_buf_equivalence_~lhs#1.base_BEFORE_CALL_2|) 16)) (not (= |v_ULTIMATE.start_assert_byte_buf_equivalence_~lhs#1.base_BEFORE_CALL_2| |v_ULTIMATE.start_assert_byte_buf_equivalence_~rhs#1.base_BEFORE_CALL_2|)))) is different from true [2021-12-18 00:09:12,970 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_assert_byte_buf_equivalence_~lhs#1.base_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_assert_byte_buf_equivalence_~rhs#1.base_BEFORE_CALL_3| Int)) (and (< 1 |v_ULTIMATE.start_assert_byte_buf_equivalence_~rhs#1.base_BEFORE_CALL_3|) (not (= |v_ULTIMATE.start_assert_byte_buf_equivalence_~lhs#1.base_BEFORE_CALL_3| |v_ULTIMATE.start_assert_byte_buf_equivalence_~rhs#1.base_BEFORE_CALL_3|)) (= (select (select |c_#memory_int| |v_ULTIMATE.start_assert_byte_buf_equivalence_~rhs#1.base_BEFORE_CALL_3|) 16) (select (select |c_#memory_int| |v_ULTIMATE.start_assert_byte_buf_equivalence_~lhs#1.base_BEFORE_CALL_3|) 16)) (< 1 |v_ULTIMATE.start_assert_byte_buf_equivalence_~lhs#1.base_BEFORE_CALL_3|))) is different from true [2021-12-18 00:09:13,107 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 10 [2021-12-18 00:09:13,179 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 26 proven. 103 refuted. 0 times theorem prover too weak. 67 trivial. 8 not checked. [2021-12-18 00:09:13,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:09:13,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063095127] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:09:13,759 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 00:09:13,759 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 24] total 48 [2021-12-18 00:09:13,759 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260129321] [2021-12-18 00:09:13,759 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 00:09:13,759 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 48 states [2021-12-18 00:09:13,759 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:09:13,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2021-12-18 00:09:13,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=2451, Unknown=2, NotChecked=202, Total=2862 [2021-12-18 00:09:13,760 INFO L87 Difference]: Start difference. First operand 769 states and 867 transitions. Second operand has 48 states, 42 states have (on average 3.5) internal successors, (147), 44 states have internal predecessors, (147), 23 states have call successors, (40), 10 states have call predecessors, (40), 11 states have return successors, (37), 19 states have call predecessors, (37), 21 states have call successors, (37) [2021-12-18 00:09:59,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:09:59,082 INFO L93 Difference]: Finished difference Result 802 states and 905 transitions. [2021-12-18 00:09:59,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2021-12-18 00:09:59,082 INFO L78 Accepts]: Start accepts. Automaton has has 48 states, 42 states have (on average 3.5) internal successors, (147), 44 states have internal predecessors, (147), 23 states have call successors, (40), 10 states have call predecessors, (40), 11 states have return successors, (37), 19 states have call predecessors, (37), 21 states have call successors, (37) Word has length 175 [2021-12-18 00:09:59,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:09:59,085 INFO L225 Difference]: With dead ends: 802 [2021-12-18 00:09:59,085 INFO L226 Difference]: Without dead ends: 800 [2021-12-18 00:09:59,085 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 201 SyntacticMatches, 21 SemanticMatches, 81 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1914 ImplicationChecksByTransitivity, 49.5s TimeCoverageRelationStatistics Valid=611, Invalid=5855, Unknown=22, NotChecked=318, Total=6806 [2021-12-18 00:09:59,086 INFO L933 BasicCegarLoop]: 127 mSDtfsCounter, 372 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 3136 mSolverCounterSat, 377 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 1093 SdHoareTripleChecker+Invalid, 4354 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 377 IncrementalHoareTripleChecker+Valid, 3136 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 841 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2021-12-18 00:09:59,086 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [375 Valid, 1093 Invalid, 4354 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [377 Valid, 3136 Invalid, 0 Unknown, 841 Unchecked, 1.8s Time] [2021-12-18 00:09:59,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2021-12-18 00:09:59,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 785. [2021-12-18 00:09:59,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 785 states, 578 states have (on average 1.0536332179930796) internal successors, (609), 587 states have internal predecessors, (609), 122 states have call successors, (122), 77 states have call predecessors, (122), 84 states have return successors, (151), 120 states have call predecessors, (151), 118 states have call successors, (151) [2021-12-18 00:09:59,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 785 states to 785 states and 882 transitions. [2021-12-18 00:09:59,161 INFO L78 Accepts]: Start accepts. Automaton has 785 states and 882 transitions. Word has length 175 [2021-12-18 00:09:59,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:09:59,161 INFO L470 AbstractCegarLoop]: Abstraction has 785 states and 882 transitions. [2021-12-18 00:09:59,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 48 states, 42 states have (on average 3.5) internal successors, (147), 44 states have internal predecessors, (147), 23 states have call successors, (40), 10 states have call predecessors, (40), 11 states have return successors, (37), 19 states have call predecessors, (37), 21 states have call successors, (37) [2021-12-18 00:09:59,161 INFO L276 IsEmpty]: Start isEmpty. Operand 785 states and 882 transitions. [2021-12-18 00:09:59,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2021-12-18 00:09:59,163 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:09:59,163 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:09:59,188 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Ended with exit code 0 [2021-12-18 00:09:59,363 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable46 [2021-12-18 00:09:59,364 INFO L402 AbstractCegarLoop]: === Iteration 48 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:09:59,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:09:59,364 INFO L85 PathProgramCache]: Analyzing trace with hash -1486801265, now seen corresponding path program 1 times [2021-12-18 00:09:59,364 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:09:59,365 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [595811299] [2021-12-18 00:09:59,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:09:59,365 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:09:59,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:09:59,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:09:59,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:09:59,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:09:59,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:09:59,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 00:09:59,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:09:59,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 00:09:59,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:09:59,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:09:59,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:09:59,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 00:09:59,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:09:59,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 00:09:59,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:09:59,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 00:09:59,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:09:59,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-18 00:09:59,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:09:59,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 00:09:59,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:09:59,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:09:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:09:59,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-18 00:09:59,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:09:59,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 00:09:59,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:09:59,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-18 00:09:59,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:09:59,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-18 00:09:59,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:09:59,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:09:59,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:09:59,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:09:59,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:09:59,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:09:59,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:09:59,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 00:09:59,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:09:59,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 163 [2021-12-18 00:09:59,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:09:59,852 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-12-18 00:09:59,852 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:09:59,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [595811299] [2021-12-18 00:09:59,852 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [595811299] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:09:59,852 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [837334003] [2021-12-18 00:09:59,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:09:59,852 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:09:59,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:09:59,853 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:09:59,854 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2021-12-18 00:10:00,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:10:00,395 INFO L263 TraceCheckSpWp]: Trace formula consists of 2979 conjuncts, 117 conjunts are in the unsatisfiable core [2021-12-18 00:10:00,400 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:10:00,411 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 00:10:00,673 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 00:10:00,673 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-18 00:10:00,698 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 00:10:00,702 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 00:10:02,824 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_write_be64_harness_~#buf~3#1.base_BEFORE_CALL_149| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_be64_harness_~#buf~3#1.base_BEFORE_CALL_149|) 8) |v_ULTIMATE.start_aws_byte_buf_write_be64_harness_~#buf~3#1.base_BEFORE_CALL_149|))) is different from true [2021-12-18 00:10:15,822 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 20 treesize of output 19 [2021-12-18 00:10:15,827 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 [2021-12-18 00:10:37,852 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 20 treesize of output 19 [2021-12-18 00:10:37,858 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 [2021-12-18 00:11:05,723 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 00:11:05,723 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 8 [2021-12-18 00:11:14,121 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4911 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_memcpy_impl_#in~dst.base| v_ArrVal_4911))) is different from true [2021-12-18 00:11:14,133 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_4911 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_my_memcpy_#in~dst.base| v_ArrVal_4911))) is different from true [2021-12-18 00:11:14,142 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2021-12-18 00:11:14,244 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 [2021-12-18 00:11:20,612 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 16 proven. 156 refuted. 3 times theorem prover too weak. 71 trivial. 10 not checked. [2021-12-18 00:11:20,613 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:11:20,975 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_4922 (Array Int Int))) (< 0 (mod (select (select (store |c_#memory_int| |c_aws_byte_buf_write_#t~mem1173.base| v_ArrVal_4922) c_aws_byte_buf_write_~buf.base) (+ c_aws_byte_buf_write_~buf.offset 16)) 18446744073709551616))) is different from false [2021-12-18 00:11:20,976 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [837334003] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:11:20,976 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 00:11:20,976 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 32] total 46 [2021-12-18 00:11:20,976 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566715418] [2021-12-18 00:11:20,976 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 00:11:20,976 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2021-12-18 00:11:20,977 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:11:20,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2021-12-18 00:11:20,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=2018, Unknown=13, NotChecked=372, Total=2550 [2021-12-18 00:11:20,977 INFO L87 Difference]: Start difference. First operand 785 states and 882 transitions. Second operand has 46 states, 41 states have (on average 4.195121951219512) internal successors, (172), 38 states have internal predecessors, (172), 19 states have call successors, (43), 12 states have call predecessors, (43), 10 states have return successors, (40), 16 states have call predecessors, (40), 18 states have call successors, (40) [2021-12-18 00:12:32,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 00:12:32,909 INFO L93 Difference]: Finished difference Result 1012 states and 1175 transitions. [2021-12-18 00:12:32,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2021-12-18 00:12:32,910 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 41 states have (on average 4.195121951219512) internal successors, (172), 38 states have internal predecessors, (172), 19 states have call successors, (43), 12 states have call predecessors, (43), 10 states have return successors, (40), 16 states have call predecessors, (40), 18 states have call successors, (40) Word has length 183 [2021-12-18 00:12:32,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 00:12:32,912 INFO L225 Difference]: With dead ends: 1012 [2021-12-18 00:12:32,912 INFO L226 Difference]: Without dead ends: 802 [2021-12-18 00:12:32,913 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 301 GetRequests, 193 SyntacticMatches, 23 SemanticMatches, 85 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 1863 ImplicationChecksByTransitivity, 150.7s TimeCoverageRelationStatistics Valid=492, Invalid=6283, Unknown=47, NotChecked=660, Total=7482 [2021-12-18 00:12:32,913 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 281 mSDsluCounter, 1938 mSDsCounter, 0 mSdLazyCounter, 1884 mSolverCounterSat, 278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 285 SdHoareTripleChecker+Valid, 2118 SdHoareTripleChecker+Invalid, 5003 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 278 IncrementalHoareTripleChecker+Valid, 1884 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2841 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-12-18 00:12:32,913 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [285 Valid, 2118 Invalid, 5003 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [278 Valid, 1884 Invalid, 0 Unknown, 2841 Unchecked, 0.9s Time] [2021-12-18 00:12:32,914 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2021-12-18 00:12:32,952 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 802. [2021-12-18 00:12:32,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 802 states, 594 states have (on average 1.0538720538720538) internal successors, (626), 603 states have internal predecessors, (626), 122 states have call successors, (122), 78 states have call predecessors, (122), 85 states have return successors, (150), 120 states have call predecessors, (150), 118 states have call successors, (150) [2021-12-18 00:12:32,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 802 states to 802 states and 898 transitions. [2021-12-18 00:12:32,954 INFO L78 Accepts]: Start accepts. Automaton has 802 states and 898 transitions. Word has length 183 [2021-12-18 00:12:32,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 00:12:32,954 INFO L470 AbstractCegarLoop]: Abstraction has 802 states and 898 transitions. [2021-12-18 00:12:32,954 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 41 states have (on average 4.195121951219512) internal successors, (172), 38 states have internal predecessors, (172), 19 states have call successors, (43), 12 states have call predecessors, (43), 10 states have return successors, (40), 16 states have call predecessors, (40), 18 states have call successors, (40) [2021-12-18 00:12:32,955 INFO L276 IsEmpty]: Start isEmpty. Operand 802 states and 898 transitions. [2021-12-18 00:12:32,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 186 [2021-12-18 00:12:32,956 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 00:12:32,956 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 00:12:32,977 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2021-12-18 00:12:33,156 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:12:33,157 INFO L402 AbstractCegarLoop]: === Iteration 49 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-18 00:12:33,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 00:12:33,157 INFO L85 PathProgramCache]: Analyzing trace with hash 397059415, now seen corresponding path program 1 times [2021-12-18 00:12:33,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 00:12:33,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375798750] [2021-12-18 00:12:33,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:12:33,157 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 00:12:33,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:33,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2021-12-18 00:12:33,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:33,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2021-12-18 00:12:33,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:33,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2021-12-18 00:12:33,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:33,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2021-12-18 00:12:33,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:33,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:12:33,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:33,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2021-12-18 00:12:33,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:33,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2021-12-18 00:12:33,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:33,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2021-12-18 00:12:33,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:33,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2021-12-18 00:12:33,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:33,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2021-12-18 00:12:33,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:33,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:12:33,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:33,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2021-12-18 00:12:33,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:33,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2021-12-18 00:12:33,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:33,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2021-12-18 00:12:33,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:33,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2021-12-18 00:12:33,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:33,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:12:33,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:33,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-18 00:12:33,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:33,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-18 00:12:33,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:33,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2021-12-18 00:12:33,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:33,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2021-12-18 00:12:33,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:33,693 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 240 trivial. 0 not checked. [2021-12-18 00:12:33,693 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 00:12:33,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375798750] [2021-12-18 00:12:33,693 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375798750] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:12:33,693 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689472338] [2021-12-18 00:12:33,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 00:12:33,693 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 00:12:33,693 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 00:12:33,694 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 00:12:33,695 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2021-12-18 00:12:34,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 00:12:34,252 INFO L263 TraceCheckSpWp]: Trace formula consists of 2995 conjuncts, 113 conjunts are in the unsatisfiable core [2021-12-18 00:12:34,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 00:12:34,265 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 00:12:34,522 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-12-18 00:12:34,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2021-12-18 00:12:34,549 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-18 00:12:36,577 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_write_be64_harness_~#buf~3#1.base_BEFORE_CALL_155| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_be64_harness_~#buf~3#1.base_BEFORE_CALL_155|) 8) |v_ULTIMATE.start_aws_byte_buf_write_be64_harness_~#buf~3#1.base_BEFORE_CALL_155|))) is different from true [2021-12-18 00:12:38,650 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_write_be64_harness_~#buf~3#1.base_BEFORE_CALL_156| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_be64_harness_~#buf~3#1.base_BEFORE_CALL_156|) 8) |v_ULTIMATE.start_aws_byte_buf_write_be64_harness_~#buf~3#1.base_BEFORE_CALL_156|))) is different from true [2021-12-18 00:12:38,701 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 20 treesize of output 19 [2021-12-18 00:12:40,727 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_write_be64_~buf#1.base_BEFORE_CALL_69| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_be64_~buf#1.base_BEFORE_CALL_69|) 8) |v_ULTIMATE.start_aws_byte_buf_write_be64_~buf#1.base_BEFORE_CALL_69|))) is different from true [2021-12-18 00:12:42,788 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_write_be64_~buf#1.base_BEFORE_CALL_70| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_be64_~buf#1.base_BEFORE_CALL_70|) 8) |v_ULTIMATE.start_aws_byte_buf_write_be64_~buf#1.base_BEFORE_CALL_70|))) is different from true [2021-12-18 00:12:44,843 WARN L860 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_write_be64_~buf#1.base_BEFORE_CALL_71| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_be64_~buf#1.base_BEFORE_CALL_71|) 8) |v_ULTIMATE.start_aws_byte_buf_write_be64_~buf#1.base_BEFORE_CALL_71|))) is different from true [2021-12-18 00:12:44,893 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 20 treesize of output 19 [2021-12-18 00:12:47,025 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_aws_byte_buf_write_~buf.base_BEFORE_CALL_113 Int)) (not (= (select (select |c_#memory_$Pointer$.base| v_aws_byte_buf_write_~buf.base_BEFORE_CALL_113) 8) v_aws_byte_buf_write_~buf.base_BEFORE_CALL_113))) is different from true [2021-12-18 00:12:49,097 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_aws_byte_buf_write_~buf.base_BEFORE_CALL_114 Int)) (not (= (select (select |c_#memory_$Pointer$.base| v_aws_byte_buf_write_~buf.base_BEFORE_CALL_114) 8) v_aws_byte_buf_write_~buf.base_BEFORE_CALL_114))) is different from true [2021-12-18 00:12:51,153 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_aws_byte_buf_write_~buf.base_BEFORE_CALL_115 Int)) (not (= (select (select |c_#memory_$Pointer$.base| v_aws_byte_buf_write_~buf.base_BEFORE_CALL_115) 8) v_aws_byte_buf_write_~buf.base_BEFORE_CALL_115))) is different from true [2021-12-18 00:12:51,593 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5206 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_memcpy_impl_#in~dst.base| v_ArrVal_5206))) is different from true [2021-12-18 00:12:51,610 WARN L860 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5206 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_my_memcpy_#in~dst.base| v_ArrVal_5206))) is different from true [2021-12-18 00:12:51,622 INFO L173 IndexEqualityManager]: detected equality via solver [2021-12-18 00:12:51,623 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 11 [2021-12-18 00:12:51,625 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 26 [2021-12-18 00:12:51,667 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 00:12:51,668 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 00:12:51,668 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 28 [2021-12-18 00:12:54,284 INFO L134 CoverageAnalysis]: Checked inductivity of 265 backedges. 16 proven. 20 refuted. 48 times theorem prover too weak. 36 trivial. 145 not checked. [2021-12-18 00:12:54,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 00:12:54,721 WARN L838 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5218 (Array Int Int))) (let ((.cse1 (select (store |c_#memory_int| |c_aws_byte_buf_write_#t~mem1173.base| v_ArrVal_5218) c_aws_byte_buf_write_~buf.base))) (let ((.cse0 (+ c_aws_byte_buf_write_~len (select .cse1 c_aws_byte_buf_write_~buf.offset)))) (<= (mod .cse0 18446744073709551616) (mod (select (store .cse1 c_aws_byte_buf_write_~buf.offset .cse0) (+ c_aws_byte_buf_write_~buf.offset 16)) 18446744073709551616))))) is different from false [2021-12-18 00:12:54,722 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689472338] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 00:12:54,722 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 00:12:54,722 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 37] total 52 [2021-12-18 00:12:54,722 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52964242] [2021-12-18 00:12:54,723 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 00:12:54,723 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 52 states [2021-12-18 00:12:54,723 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 00:12:54,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 52 interpolants. [2021-12-18 00:12:54,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=2124, Unknown=13, NotChecked=1122, Total=3422 [2021-12-18 00:12:54,724 INFO L87 Difference]: Start difference. First operand 802 states and 898 transitions. Second operand has 52 states, 47 states have (on average 4.170212765957447) internal successors, (196), 43 states have internal predecessors, (196), 17 states have call successors, (43), 19 states have call predecessors, (43), 16 states have return successors, (40), 16 states have call predecessors, (40), 16 states have call successors, (40) Killed by 15