./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 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_append_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 aad159acc9cbece9fe1ce64619aff83e5e3477bbd84af6f399f8d36d8b5384a2 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:54:46,909 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:54:46,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:54:46,942 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:54:46,943 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:54:46,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:54:46,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:54:46,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:54:46,947 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:54:46,948 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:54:46,948 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:54:46,949 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:54:46,950 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:54:46,950 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:54:46,951 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:54:46,952 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:54:46,953 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:54:46,953 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:54:46,955 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:54:46,956 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:54:46,957 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:54:46,962 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:54:46,963 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:54:46,964 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:54:46,964 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:54:46,966 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:54:46,967 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:54:46,967 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:54:46,968 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:54:46,968 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:54:46,969 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:54:46,969 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:54:46,969 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:54:46,970 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:54:46,970 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:54:46,971 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:54:46,971 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:54:46,972 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:54:46,972 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:54:46,972 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:54:46,973 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:54:46,984 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:54:46,984 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-19 21:54:46,999 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:54:46,999 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:54:47,000 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:54:47,000 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:54:47,000 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:54:47,000 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:54:47,001 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:54:47,001 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:54:47,001 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:54:47,001 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:54:47,002 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:54:47,002 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:54:47,002 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:54:47,002 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:54:47,002 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:54:47,002 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:54:47,002 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:54:47,003 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:54:47,003 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:54:47,003 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:54:47,003 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:54:47,003 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:54:47,003 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:54:47,004 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:54:47,004 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:54:47,004 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:54:47,004 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:54:47,004 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:54:47,004 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:54:47,004 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:54:47,005 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> aad159acc9cbece9fe1ce64619aff83e5e3477bbd84af6f399f8d36d8b5384a2 [2022-07-19 21:54:47,221 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:54:47,245 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:54:47,248 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:54:47,249 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:54:47,250 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:54:47,251 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i [2022-07-19 21:54:47,290 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/389510c14/aa6cf6684b6c4ce7b17e7086d17f4d2f/FLAG00502938d [2022-07-19 21:54:47,891 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:54:47,892 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i [2022-07-19 21:54:47,921 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/389510c14/aa6cf6684b6c4ce7b17e7086d17f4d2f/FLAG00502938d [2022-07-19 21:54:48,089 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/389510c14/aa6cf6684b6c4ce7b17e7086d17f4d2f [2022-07-19 21:54:48,091 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:54:48,092 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:54:48,093 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:54:48,093 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:54:48,095 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:54:48,096 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:54:48" (1/1) ... [2022-07-19 21:54:48,097 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11615014 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:54:48, skipping insertion in model container [2022-07-19 21:54:48,097 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:54:48" (1/1) ... [2022-07-19 21:54:48,101 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:54:48,164 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:54:48,367 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_append_harness.i[4493,4506] [2022-07-19 21:54:48,373 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_append_harness.i[4553,4566] [2022-07-19 21:54:48,866 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:48,872 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:48,873 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:48,874 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:48,875 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:48,882 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:48,885 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:48,889 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:48,889 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:49,062 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-19 21:54:49,063 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-19 21:54:49,064 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-19 21:54:49,064 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-19 21:54:49,065 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-19 21:54:49,065 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-19 21:54:49,066 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-19 21:54:49,066 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-19 21:54:49,067 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-19 21:54:49,067 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-19 21:54:49,143 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-19 21:54:49,214 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:49,230 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:49,328 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:54:49,376 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:54:49,392 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_append_harness.i[4493,4506] [2022-07-19 21:54:49,394 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_append_harness.i[4553,4566] [2022-07-19 21:54:49,421 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:49,422 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:49,422 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:49,423 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:49,423 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:49,431 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:49,432 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:49,433 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:49,433 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:49,466 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-19 21:54:49,467 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-19 21:54:49,467 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-19 21:54:49,468 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-19 21:54:49,468 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-19 21:54:49,469 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-19 21:54:49,469 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-19 21:54:49,469 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-19 21:54:49,470 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-19 21:54:49,470 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-19 21:54:49,484 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-19 21:54:49,528 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:49,529 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:54:49,553 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:54:49,783 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:54:49,784 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:54:49 WrapperNode [2022-07-19 21:54:49,784 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:54:49,785 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:54:49,785 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:54:49,785 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:54:49,790 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:54:49" (1/1) ... [2022-07-19 21:54:49,884 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:54:49" (1/1) ... [2022-07-19 21:54:49,944 INFO L137 Inliner]: procedures = 691, calls = 2643, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 859 [2022-07-19 21:54:49,948 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:54:49,949 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:54:49,949 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:54:49,949 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:54:49,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:54:49" (1/1) ... [2022-07-19 21:54:49,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:54:49" (1/1) ... [2022-07-19 21:54:49,964 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:54:49" (1/1) ... [2022-07-19 21:54:49,964 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:54:49" (1/1) ... [2022-07-19 21:54:50,006 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:54:49" (1/1) ... [2022-07-19 21:54:50,009 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:54:49" (1/1) ... [2022-07-19 21:54:50,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:54:49" (1/1) ... [2022-07-19 21:54:50,021 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:54:50,022 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:54:50,022 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:54:50,022 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:54:50,031 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:54:49" (1/1) ... [2022-07-19 21:54:50,035 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:54:50,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:54:50,064 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 21:54:50,103 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 21:54:50,129 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-07-19 21:54:50,129 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-07-19 21:54:50,129 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_cursor_is_valid [2022-07-19 21:54:50,129 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_cursor_is_valid [2022-07-19 21:54:50,130 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:54:50,130 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-19 21:54:50,130 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-19 21:54:50,130 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_append [2022-07-19 21:54:50,130 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_append [2022-07-19 21:54:50,131 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:54:50,131 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-19 21:54:50,131 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-19 21:54:50,132 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-19 21:54:50,132 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-19 21:54:50,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 21:54:50,132 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:54:50,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 21:54:50,132 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-07-19 21:54:50,132 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-07-19 21:54:50,133 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:54:50,133 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:54:50,133 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-19 21:54:50,133 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-19 21:54:50,133 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-19 21:54:50,133 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-19 21:54:50,133 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-07-19 21:54:50,133 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-07-19 21:54:50,134 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:54:50,134 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 21:54:50,134 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-19 21:54:50,134 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-19 21:54:50,135 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-19 21:54:50,135 INFO L130 BoogieDeclarations]: Found specification of procedure assert_bytes_match [2022-07-19 21:54:50,135 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_bytes_match [2022-07-19 21:54:50,135 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-19 21:54:50,135 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-19 21:54:50,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:54:50,135 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:54:50,375 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:54:50,392 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:54:51,136 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:54:51,146 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:54:51,146 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 21:54:51,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:54:51 BoogieIcfgContainer [2022-07-19 21:54:51,148 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:54:51,152 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:54:51,152 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:54:51,154 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:54:51,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:54:48" (1/3) ... [2022-07-19 21:54:51,155 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cea1fd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:54:51, skipping insertion in model container [2022-07-19 21:54:51,155 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:54:49" (2/3) ... [2022-07-19 21:54:51,156 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cea1fd9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:54:51, skipping insertion in model container [2022-07-19 21:54:51,156 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:54:51" (3/3) ... [2022-07-19 21:54:51,157 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_append_harness.i [2022-07-19 21:54:51,167 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:54:51,168 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:54:51,224 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:54:51,233 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@234f5cde, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@81dda6f [2022-07-19 21:54:51,233 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 21:54:51,237 INFO L276 IsEmpty]: Start isEmpty. Operand has 170 states, 107 states have (on average 1.2149532710280373) internal successors, (130), 108 states have internal predecessors, (130), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-07-19 21:54:51,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-19 21:54:51,269 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:54:51,270 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2022-07-19 21:54:51,270 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:54:51,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:54:51,276 INFO L85 PathProgramCache]: Analyzing trace with hash 1617698357, now seen corresponding path program 1 times [2022-07-19 21:54:51,281 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:54:51,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126114918] [2022-07-19 21:54:51,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:54:51,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:54:51,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:51,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:54:51,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:51,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:54:51,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:51,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:54:51,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:51,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:54:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:51,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:54:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:51,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 21:54:51,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:51,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 21:54:51,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:51,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 21:54:51,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:51,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 21:54:51,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:51,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 21:54:51,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:51,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 21:54:51,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:51,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 21:54:51,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:51,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 21:54:51,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:51,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 21:54:51,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:51,877 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-07-19 21:54:51,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:54:51,888 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126114918] [2022-07-19 21:54:51,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126114918] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:54:51,888 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:54:51,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:54:51,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778266507] [2022-07-19 21:54:51,890 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:54:51,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:54:51,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:54:51,910 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:54:51,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:54:51,912 INFO L87 Difference]: Start difference. First operand has 170 states, 107 states have (on average 1.2149532710280373) internal successors, (130), 108 states have internal predecessors, (130), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) 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), 1 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-19 21:54:52,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:54:52,100 INFO L93 Difference]: Finished difference Result 336 states and 480 transitions. [2022-07-19 21:54:52,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:54:52,102 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), 1 states have call predecessors, (14), 2 states have call successors, (14) Word has length 97 [2022-07-19 21:54:52,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:54:52,109 INFO L225 Difference]: With dead ends: 336 [2022-07-19 21:54:52,109 INFO L226 Difference]: Without dead ends: 165 [2022-07-19 21:54:52,112 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:54:52,114 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 91 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 21:54:52,115 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 229 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 21:54:52,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-07-19 21:54:52,145 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2022-07-19 21:54:52,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 103 states have (on average 1.1941747572815533) internal successors, (123), 104 states have internal predecessors, (123), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-07-19 21:54:52,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 218 transitions. [2022-07-19 21:54:52,149 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 218 transitions. Word has length 97 [2022-07-19 21:54:52,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:54:52,149 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 218 transitions. [2022-07-19 21:54:52,149 INFO L496 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), 1 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-19 21:54:52,150 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 218 transitions. [2022-07-19 21:54:52,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-19 21:54:52,152 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:54:52,153 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2022-07-19 21:54:52,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:54:52,153 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:54:52,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:54:52,154 INFO L85 PathProgramCache]: Analyzing trace with hash -369216981, now seen corresponding path program 1 times [2022-07-19 21:54:52,154 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:54:52,154 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146359948] [2022-07-19 21:54:52,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:54:52,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:54:52,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:52,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:54:52,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:52,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:54:52,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:52,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:54:52,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:52,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:54:52,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:52,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:54:52,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:52,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 21:54:52,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:52,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 21:54:52,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:52,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 21:54:52,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:52,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 21:54:52,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:52,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 21:54:52,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:52,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 21:54:52,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:52,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 21:54:52,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:52,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 21:54:52,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:52,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 21:54:52,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:52,408 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-07-19 21:54:52,409 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:54:52,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2146359948] [2022-07-19 21:54:52,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2146359948] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:54:52,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [607472855] [2022-07-19 21:54:52,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:54:52,410 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:54:52,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:54:52,423 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:54:52,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 21:54:52,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:52,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 2623 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 21:54:52,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:54:52,945 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-19 21:54:52,946 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:54:52,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [607472855] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:54:52,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:54:52,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-07-19 21:54:52,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1049024074] [2022-07-19 21:54:52,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:54:52,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:54:52,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:54:52,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:54:52,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:54:52,949 INFO L87 Difference]: Start difference. First operand 165 states and 218 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2022-07-19 21:54:53,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:54:53,106 INFO L93 Difference]: Finished difference Result 316 states and 421 transitions. [2022-07-19 21:54:53,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:54:53,107 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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 97 [2022-07-19 21:54:53,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:54:53,109 INFO L225 Difference]: With dead ends: 316 [2022-07-19 21:54:53,109 INFO L226 Difference]: Without dead ends: 168 [2022-07-19 21:54:53,110 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-19 21:54:53,111 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 239 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 242 SdHoareTripleChecker+Valid, 668 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 21:54:53,111 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [242 Valid, 668 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 21:54:53,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-07-19 21:54:53,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2022-07-19 21:54:53,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 105 states have (on average 1.1904761904761905) internal successors, (125), 107 states have internal predecessors, (125), 48 states have call successors, (48), 13 states have call predecessors, (48), 14 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2022-07-19 21:54:53,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 223 transitions. [2022-07-19 21:54:53,124 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 223 transitions. Word has length 97 [2022-07-19 21:54:53,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:54:53,125 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 223 transitions. [2022-07-19 21:54:53,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 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) [2022-07-19 21:54:53,125 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 223 transitions. [2022-07-19 21:54:53,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-19 21:54:53,127 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:54:53,127 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 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] [2022-07-19 21:54:53,172 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 21:54:53,347 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:54:53,348 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:54:53,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:54:53,348 INFO L85 PathProgramCache]: Analyzing trace with hash 1220439414, now seen corresponding path program 1 times [2022-07-19 21:54:53,349 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:54:53,349 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [26279661] [2022-07-19 21:54:53,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:54:53,349 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:54:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:53,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:54:53,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:53,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:54:53,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:53,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:54:53,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:53,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:54:53,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:53,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:54:53,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:53,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 21:54:53,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:53,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 21:54:53,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:53,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 21:54:53,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:53,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 21:54:53,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:53,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 21:54:53,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:53,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 21:54:53,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:53,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 21:54:53,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:53,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 21:54:53,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:53,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 21:54:53,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:53,623 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-07-19 21:54:53,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:54:53,623 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [26279661] [2022-07-19 21:54:53,623 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [26279661] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:54:53,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:54:53,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:54:53,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [109536019] [2022-07-19 21:54:53,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:54:53,624 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:54:53,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:54:53,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:54:53,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:54:53,625 INFO L87 Difference]: Start difference. First operand 168 states and 223 transitions. Second operand has 8 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 4 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2022-07-19 21:54:54,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:54:54,098 INFO L93 Difference]: Finished difference Result 294 states and 391 transitions. [2022-07-19 21:54:54,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 21:54:54,099 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 4 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) Word has length 103 [2022-07-19 21:54:54,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:54:54,100 INFO L225 Difference]: With dead ends: 294 [2022-07-19 21:54:54,100 INFO L226 Difference]: Without dead ends: 165 [2022-07-19 21:54:54,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2022-07-19 21:54:54,101 INFO L413 NwaCegarLoop]: 177 mSDtfsCounter, 160 mSDsluCounter, 191 mSDsCounter, 0 mSdLazyCounter, 659 mSolverCounterSat, 97 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 756 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 97 IncrementalHoareTripleChecker+Valid, 659 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 21:54:54,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [182 Valid, 368 Invalid, 756 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [97 Valid, 659 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 21:54:54,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-07-19 21:54:54,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2022-07-19 21:54:54,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 103 states have (on average 1.1844660194174756) internal successors, (122), 104 states have internal predecessors, (122), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-07-19 21:54:54,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 217 transitions. [2022-07-19 21:54:54,112 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 217 transitions. Word has length 103 [2022-07-19 21:54:54,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:54:54,112 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 217 transitions. [2022-07-19 21:54:54,112 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.0) internal successors, (49), 6 states have internal predecessors, (49), 4 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 3 states have call predecessors, (14), 4 states have call successors, (14) [2022-07-19 21:54:54,113 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 217 transitions. [2022-07-19 21:54:54,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-19 21:54:54,114 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:54:54,114 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:54:54,114 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 21:54:54,114 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:54:54,115 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:54:54,115 INFO L85 PathProgramCache]: Analyzing trace with hash 139910209, now seen corresponding path program 1 times [2022-07-19 21:54:54,115 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:54:54,115 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540832939] [2022-07-19 21:54:54,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:54:54,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:54:54,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:54,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:54:54,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:54,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:54:54,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:54,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:54:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:54,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:54:54,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:54,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:54:54,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:54,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 21:54:54,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:54,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 21:54:54,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:54,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 21:54:54,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:54,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 21:54:54,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:54,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 21:54:54,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:54,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 21:54:54,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:54,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 21:54:54,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:54,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 21:54:54,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:54,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 21:54:54,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:54,343 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-07-19 21:54:54,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:54:54,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540832939] [2022-07-19 21:54:54,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540832939] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:54:54,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [895816691] [2022-07-19 21:54:54,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:54:54,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:54:54,345 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:54:54,346 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:54:54,347 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 21:54:54,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:54,694 INFO L263 TraceCheckSpWp]: Trace formula consists of 2657 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 21:54:54,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:54:54,817 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 64 proven. 15 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-19 21:54:54,817 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:54:54,925 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-07-19 21:54:54,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [895816691] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:54:54,926 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:54:54,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2022-07-19 21:54:54,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996904882] [2022-07-19 21:54:54,926 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:54:54,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 21:54:54,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:54:54,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 21:54:54,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-07-19 21:54:54,928 INFO L87 Difference]: Start difference. First operand 165 states and 217 transitions. Second operand has 12 states, 12 states have (on average 9.75) internal successors, (117), 11 states have internal predecessors, (117), 7 states have call successors, (38), 4 states have call predecessors, (38), 5 states have return successors, (36), 7 states have call predecessors, (36), 7 states have call successors, (36) [2022-07-19 21:54:55,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:54:55,371 INFO L93 Difference]: Finished difference Result 296 states and 394 transitions. [2022-07-19 21:54:55,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:54:55,372 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 9.75) internal successors, (117), 11 states have internal predecessors, (117), 7 states have call successors, (38), 4 states have call predecessors, (38), 5 states have return successors, (36), 7 states have call predecessors, (36), 7 states have call successors, (36) Word has length 109 [2022-07-19 21:54:55,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:54:55,373 INFO L225 Difference]: With dead ends: 296 [2022-07-19 21:54:55,373 INFO L226 Difference]: Without dead ends: 168 [2022-07-19 21:54:55,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 254 GetRequests, 240 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2022-07-19 21:54:55,375 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 281 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 209 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 270 SdHoareTripleChecker+Invalid, 607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 209 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 21:54:55,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 270 Invalid, 607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [209 Valid, 398 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 21:54:55,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-07-19 21:54:55,388 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2022-07-19 21:54:55,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 105 states have (on average 1.180952380952381) internal successors, (124), 107 states have internal predecessors, (124), 48 states have call successors, (48), 13 states have call predecessors, (48), 14 states have return successors, (50), 47 states have call predecessors, (50), 47 states have call successors, (50) [2022-07-19 21:54:55,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 222 transitions. [2022-07-19 21:54:55,395 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 222 transitions. Word has length 109 [2022-07-19 21:54:55,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:54:55,397 INFO L495 AbstractCegarLoop]: Abstraction has 168 states and 222 transitions. [2022-07-19 21:54:55,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 9.75) internal successors, (117), 11 states have internal predecessors, (117), 7 states have call successors, (38), 4 states have call predecessors, (38), 5 states have return successors, (36), 7 states have call predecessors, (36), 7 states have call successors, (36) [2022-07-19 21:54:55,397 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 222 transitions. [2022-07-19 21:54:55,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-19 21:54:55,399 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:54:55,402 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:54:55,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 21:54:55,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2022-07-19 21:54:55,603 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:54:55,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:54:55,604 INFO L85 PathProgramCache]: Analyzing trace with hash -2020813690, now seen corresponding path program 1 times [2022-07-19 21:54:55,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:54:55,604 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349049449] [2022-07-19 21:54:55,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:54:55,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:54:55,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:55,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:54:55,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:55,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:54:55,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:55,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:54:55,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:55,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:54:55,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:55,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:54:55,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:55,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 21:54:55,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:55,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 21:54:55,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:55,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 21:54:55,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:55,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 21:54:55,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:55,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 21:54:55,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:55,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 21:54:55,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:55,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 21:54:55,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:55,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-19 21:54:55,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:55,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 21:54:55,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:55,895 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-07-19 21:54:55,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:54:55,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349049449] [2022-07-19 21:54:55,896 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349049449] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:54:55,896 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [403982728] [2022-07-19 21:54:55,897 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:54:55,897 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:54:55,897 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:54:55,912 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:54:55,913 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 21:54:56,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:56,260 INFO L263 TraceCheckSpWp]: Trace formula consists of 2662 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 21:54:56,264 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:54:56,397 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 28 proven. 50 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-19 21:54:56,397 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:54:56,514 INFO L134 CoverageAnalysis]: Checked inductivity of 103 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-07-19 21:54:56,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [403982728] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-19 21:54:56,514 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-19 21:54:56,515 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11, 8] total 21 [2022-07-19 21:54:56,515 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [736445417] [2022-07-19 21:54:56,515 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:54:56,515 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:54:56,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:54:56,516 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:54:56,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=365, Unknown=0, NotChecked=0, Total=420 [2022-07-19 21:54:56,516 INFO L87 Difference]: Start difference. First operand 168 states and 222 transitions. Second operand has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2022-07-19 21:54:56,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:54:56,745 INFO L93 Difference]: Finished difference Result 291 states and 384 transitions. [2022-07-19 21:54:56,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 21:54:56,745 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) Word has length 111 [2022-07-19 21:54:56,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:54:56,749 INFO L225 Difference]: With dead ends: 291 [2022-07-19 21:54:56,749 INFO L226 Difference]: Without dead ends: 165 [2022-07-19 21:54:56,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 263 GetRequests, 239 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=83, Invalid=567, Unknown=0, NotChecked=0, Total=650 [2022-07-19 21:54:56,751 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 230 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 251 mSolverCounterSat, 78 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 78 IncrementalHoareTripleChecker+Valid, 251 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 21:54:56,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 935 Invalid, 329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [78 Valid, 251 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 21:54:56,753 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-07-19 21:54:56,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2022-07-19 21:54:56,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 103 states have (on average 1.174757281553398) internal successors, (121), 104 states have internal predecessors, (121), 48 states have call successors, (48), 13 states have call predecessors, (48), 13 states have return successors, (47), 47 states have call predecessors, (47), 47 states have call successors, (47) [2022-07-19 21:54:56,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 216 transitions. [2022-07-19 21:54:56,772 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 216 transitions. Word has length 111 [2022-07-19 21:54:56,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:54:56,772 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 216 transitions. [2022-07-19 21:54:56,772 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.375) internal successors, (51), 7 states have internal predecessors, (51), 5 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 5 states have call predecessors, (14), 5 states have call successors, (14) [2022-07-19 21:54:56,773 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 216 transitions. [2022-07-19 21:54:56,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-19 21:54:56,774 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:54:56,774 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:54:56,798 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 21:54:56,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:54:56,996 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:54:56,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:54:56,997 INFO L85 PathProgramCache]: Analyzing trace with hash -1770709749, now seen corresponding path program 1 times [2022-07-19 21:54:56,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:54:56,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380173401] [2022-07-19 21:54:56,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:54:56,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:54:57,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:57,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:54:57,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:57,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:54:57,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:57,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:54:57,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:57,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:54:57,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:57,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:54:57,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:57,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 21:54:57,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:57,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 21:54:57,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:57,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 21:54:57,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:57,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 21:54:57,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:57,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 21:54:57,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:57,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 21:54:57,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:57,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 21:54:57,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:57,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-19 21:54:57,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:57,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 21:54:57,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:57,351 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-07-19 21:54:57,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:54:57,351 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380173401] [2022-07-19 21:54:57,352 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380173401] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:54:57,352 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [176955564] [2022-07-19 21:54:57,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:54:57,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:54:57,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:54:57,368 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:54:57,369 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 21:54:57,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:54:57,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 2667 conjuncts, 33 conjunts are in the unsatisfiable core [2022-07-19 21:54:57,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:54:58,256 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2022-07-19 21:54:58,276 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 60 proven. 6 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-19 21:54:58,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:54:58,352 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2022-07-19 21:54:58,383 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-19 21:54:58,383 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2022-07-19 21:54:58,406 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-07-19 21:54:58,406 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [176955564] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:54:58,406 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:54:58,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 9] total 17 [2022-07-19 21:54:58,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238517980] [2022-07-19 21:54:58,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:54:58,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2022-07-19 21:54:58,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:54:58,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2022-07-19 21:54:58,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2022-07-19 21:54:58,408 INFO L87 Difference]: Start difference. First operand 165 states and 216 transitions. Second operand has 17 states, 17 states have (on average 5.176470588235294) internal successors, (88), 14 states have internal predecessors, (88), 7 states have call successors, (26), 6 states have call predecessors, (26), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2022-07-19 21:54:59,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:54:59,891 INFO L93 Difference]: Finished difference Result 362 states and 481 transitions. [2022-07-19 21:54:59,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-07-19 21:54:59,891 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 5.176470588235294) internal successors, (88), 14 states have internal predecessors, (88), 7 states have call successors, (26), 6 states have call predecessors, (26), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) Word has length 113 [2022-07-19 21:54:59,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:54:59,895 INFO L225 Difference]: With dead ends: 362 [2022-07-19 21:54:59,895 INFO L226 Difference]: Without dead ends: 246 [2022-07-19 21:54:59,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 283 GetRequests, 238 SyntacticMatches, 13 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 287 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=179, Invalid=943, Unknown=0, NotChecked=0, Total=1122 [2022-07-19 21:54:59,904 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 205 mSDsluCounter, 446 mSDsCounter, 0 mSdLazyCounter, 1974 mSolverCounterSat, 99 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 253 SdHoareTripleChecker+Valid, 654 SdHoareTripleChecker+Invalid, 2705 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 99 IncrementalHoareTripleChecker+Valid, 1974 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 632 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 21:54:59,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [253 Valid, 654 Invalid, 2705 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [99 Valid, 1974 Invalid, 0 Unknown, 632 Unchecked, 1.1s Time] [2022-07-19 21:54:59,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 246 states. [2022-07-19 21:54:59,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 246 to 231. [2022-07-19 21:54:59,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 151 states have (on average 1.185430463576159) internal successors, (179), 151 states have internal predecessors, (179), 61 states have call successors, (61), 18 states have call predecessors, (61), 18 states have return successors, (66), 61 states have call predecessors, (66), 60 states have call successors, (66) [2022-07-19 21:54:59,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 306 transitions. [2022-07-19 21:54:59,929 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 306 transitions. Word has length 113 [2022-07-19 21:54:59,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:54:59,930 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 306 transitions. [2022-07-19 21:54:59,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.176470588235294) internal successors, (88), 14 states have internal predecessors, (88), 7 states have call successors, (26), 6 states have call predecessors, (26), 3 states have return successors, (22), 6 states have call predecessors, (22), 6 states have call successors, (22) [2022-07-19 21:54:59,930 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 306 transitions. [2022-07-19 21:54:59,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-19 21:54:59,932 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:54:59,933 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:54:59,968 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 21:55:00,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:55:00,168 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:55:00,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:55:00,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1925736603, now seen corresponding path program 1 times [2022-07-19 21:55:00,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:55:00,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450667947] [2022-07-19 21:55:00,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:00,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:55:00,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:00,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:55:00,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:00,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:55:00,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:00,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:55:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:00,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:55:00,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:00,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:55:00,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:00,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 21:55:00,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:00,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 21:55:00,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:00,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 21:55:00,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:00,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 21:55:00,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:00,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 21:55:00,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:00,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 21:55:00,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:00,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 21:55:00,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:00,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 21:55:00,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:00,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 21:55:00,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:00,481 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 12 proven. 11 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-07-19 21:55:00,482 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:55:00,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450667947] [2022-07-19 21:55:00,482 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1450667947] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:55:00,482 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [334251468] [2022-07-19 21:55:00,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:00,482 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:55:00,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:55:00,484 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:55:00,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 21:55:00,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:00,859 INFO L263 TraceCheckSpWp]: Trace formula consists of 2691 conjuncts, 28 conjunts are in the unsatisfiable core [2022-07-19 21:55:00,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:55:00,932 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 77 proven. 3 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-19 21:55:00,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:55:01,150 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 12 proven. 11 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-07-19 21:55:01,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [334251468] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:55:01,151 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:55:01,151 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 13, 11] total 20 [2022-07-19 21:55:01,151 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1241808891] [2022-07-19 21:55:01,151 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:55:01,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-19 21:55:01,152 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:55:01,152 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-19 21:55:01,152 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2022-07-19 21:55:01,153 INFO L87 Difference]: Start difference. First operand 231 states and 306 transitions. Second operand has 20 states, 17 states have (on average 5.588235294117647) internal successors, (95), 15 states have internal predecessors, (95), 5 states have call successors, (24), 4 states have call predecessors, (24), 7 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2022-07-19 21:55:02,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:55:02,425 INFO L93 Difference]: Finished difference Result 404 states and 540 transitions. [2022-07-19 21:55:02,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 21:55:02,426 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 5.588235294117647) internal successors, (95), 15 states have internal predecessors, (95), 5 states have call successors, (24), 4 states have call predecessors, (24), 7 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) Word has length 121 [2022-07-19 21:55:02,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:55:02,428 INFO L225 Difference]: With dead ends: 404 [2022-07-19 21:55:02,429 INFO L226 Difference]: Without dead ends: 253 [2022-07-19 21:55:02,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 289 GetRequests, 259 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=103, Invalid=827, Unknown=0, NotChecked=0, Total=930 [2022-07-19 21:55:02,430 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 123 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 2438 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 989 SdHoareTripleChecker+Invalid, 2495 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 2438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 21:55:02,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 989 Invalid, 2495 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 2438 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-07-19 21:55:02,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2022-07-19 21:55:02,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 236. [2022-07-19 21:55:02,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 155 states have (on average 1.1806451612903226) internal successors, (183), 156 states have internal predecessors, (183), 61 states have call successors, (61), 18 states have call predecessors, (61), 19 states have return successors, (70), 61 states have call predecessors, (70), 60 states have call successors, (70) [2022-07-19 21:55:02,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 314 transitions. [2022-07-19 21:55:02,452 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 314 transitions. Word has length 121 [2022-07-19 21:55:02,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:55:02,452 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 314 transitions. [2022-07-19 21:55:02,453 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 5.588235294117647) internal successors, (95), 15 states have internal predecessors, (95), 5 states have call successors, (24), 4 states have call predecessors, (24), 7 states have return successors, (23), 5 states have call predecessors, (23), 5 states have call successors, (23) [2022-07-19 21:55:02,453 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 314 transitions. [2022-07-19 21:55:02,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-19 21:55:02,454 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:55:02,454 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:55:02,487 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 21:55:02,675 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:55:02,676 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:55:02,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:55:02,676 INFO L85 PathProgramCache]: Analyzing trace with hash -508813440, now seen corresponding path program 1 times [2022-07-19 21:55:02,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:55:02,676 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1784601831] [2022-07-19 21:55:02,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:02,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:55:02,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:02,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:55:02,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:02,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:55:02,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:02,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:55:02,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:02,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:55:02,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:02,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:55:02,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:02,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 21:55:02,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:02,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 21:55:02,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:02,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 21:55:02,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:02,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 21:55:02,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:02,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 21:55:02,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:02,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 21:55:02,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:02,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-19 21:55:02,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:02,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 21:55:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:02,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 21:55:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:02,981 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-19 21:55:02,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:55:02,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1784601831] [2022-07-19 21:55:02,982 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1784601831] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:55:02,982 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1937618750] [2022-07-19 21:55:02,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:02,982 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:55:02,983 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:55:02,984 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:55:02,985 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 21:55:03,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:03,355 INFO L263 TraceCheckSpWp]: Trace formula consists of 2696 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-19 21:55:03,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:55:03,423 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-19 21:55:03,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:55:03,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1937618750] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:55:03,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:55:03,423 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 8 [2022-07-19 21:55:03,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019461647] [2022-07-19 21:55:03,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:55:03,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:55:03,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:55:03,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:55:03,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:55:03,425 INFO L87 Difference]: Start difference. First operand 236 states and 314 transitions. Second operand has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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) [2022-07-19 21:55:03,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:55:03,556 INFO L93 Difference]: Finished difference Result 410 states and 550 transitions. [2022-07-19 21:55:03,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:55:03,557 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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 123 [2022-07-19 21:55:03,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:55:03,558 INFO L225 Difference]: With dead ends: 410 [2022-07-19 21:55:03,558 INFO L226 Difference]: Without dead ends: 243 [2022-07-19 21:55:03,559 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:55:03,559 INFO L413 NwaCegarLoop]: 216 mSDtfsCounter, 15 mSDsluCounter, 540 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 756 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 21:55:03,559 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 756 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 72 Invalid, 0 Unknown, 39 Unchecked, 0.1s Time] [2022-07-19 21:55:03,560 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2022-07-19 21:55:03,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 236. [2022-07-19 21:55:03,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 155 states have (on average 1.167741935483871) internal successors, (181), 156 states have internal predecessors, (181), 61 states have call successors, (61), 18 states have call predecessors, (61), 19 states have return successors, (70), 61 states have call predecessors, (70), 60 states have call successors, (70) [2022-07-19 21:55:03,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 312 transitions. [2022-07-19 21:55:03,570 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 312 transitions. Word has length 123 [2022-07-19 21:55:03,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:55:03,570 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 312 transitions. [2022-07-19 21:55:03,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.4) internal successors, (72), 5 states have internal predecessors, (72), 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) [2022-07-19 21:55:03,571 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 312 transitions. [2022-07-19 21:55:03,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-19 21:55:03,571 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:55:03,572 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:55:03,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-19 21:55:03,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:55:03,787 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:55:03,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:55:03,787 INFO L85 PathProgramCache]: Analyzing trace with hash 752103810, now seen corresponding path program 1 times [2022-07-19 21:55:03,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:55:03,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1550104751] [2022-07-19 21:55:03,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:03,788 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:55:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:03,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:55:03,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:03,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:55:03,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:03,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:55:03,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:03,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:55:03,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:03,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:55:03,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:03,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 21:55:03,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:03,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 21:55:03,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:03,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 21:55:03,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:03,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 21:55:03,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:04,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 21:55:04,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:04,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 21:55:04,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:04,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-19 21:55:04,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:04,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 21:55:04,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:04,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 21:55:04,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:04,063 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 23 proven. 0 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2022-07-19 21:55:04,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:55:04,063 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1550104751] [2022-07-19 21:55:04,063 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1550104751] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:55:04,063 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:55:04,063 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:55:04,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [792730422] [2022-07-19 21:55:04,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:55:04,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:55:04,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:55:04,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:55:04,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:55:04,065 INFO L87 Difference]: Start difference. First operand 236 states and 312 transitions. Second operand has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 3 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) [2022-07-19 21:55:04,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:55:04,669 INFO L93 Difference]: Finished difference Result 389 states and 513 transitions. [2022-07-19 21:55:04,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:55:04,669 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 3 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 123 [2022-07-19 21:55:04,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:55:04,670 INFO L225 Difference]: With dead ends: 389 [2022-07-19 21:55:04,671 INFO L226 Difference]: Without dead ends: 236 [2022-07-19 21:55:04,671 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-07-19 21:55:04,672 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 99 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 1208 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 611 SdHoareTripleChecker+Invalid, 1258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 1208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 21:55:04,672 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 611 Invalid, 1258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [50 Valid, 1208 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 21:55:04,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-07-19 21:55:04,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 236. [2022-07-19 21:55:04,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 236 states, 155 states have (on average 1.1612903225806452) internal successors, (180), 156 states have internal predecessors, (180), 61 states have call successors, (61), 18 states have call predecessors, (61), 19 states have return successors, (69), 61 states have call predecessors, (69), 60 states have call successors, (69) [2022-07-19 21:55:04,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 236 states to 236 states and 310 transitions. [2022-07-19 21:55:04,682 INFO L78 Accepts]: Start accepts. Automaton has 236 states and 310 transitions. Word has length 123 [2022-07-19 21:55:04,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:55:04,682 INFO L495 AbstractCegarLoop]: Abstraction has 236 states and 310 transitions. [2022-07-19 21:55:04,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 8 states have internal predecessors, (61), 3 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) [2022-07-19 21:55:04,682 INFO L276 IsEmpty]: Start isEmpty. Operand 236 states and 310 transitions. [2022-07-19 21:55:04,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-19 21:55:04,683 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:55:04,684 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:55:04,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 21:55:04,684 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:55:04,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:55:04,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1377085930, now seen corresponding path program 1 times [2022-07-19 21:55:04,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:55:04,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1695822856] [2022-07-19 21:55:04,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:04,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:55:04,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:04,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:55:04,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:04,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:55:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:04,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:55:04,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:04,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:55:04,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:04,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:55:04,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:04,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 21:55:04,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:04,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 21:55:04,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:04,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 21:55:04,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:04,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 21:55:04,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:04,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 21:55:04,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:04,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 21:55:04,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:04,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-19 21:55:04,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:04,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 21:55:04,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:04,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-19 21:55:04,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:04,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-19 21:55:04,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:04,936 INFO L134 CoverageAnalysis]: Checked inductivity of 127 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-07-19 21:55:04,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:55:04,936 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1695822856] [2022-07-19 21:55:04,936 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1695822856] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:55:04,936 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:55:04,937 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:55:04,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490039303] [2022-07-19 21:55:04,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:55:04,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:55:04,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:55:04,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:55:04,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:55:04,939 INFO L87 Difference]: Start difference. First operand 236 states and 310 transitions. Second operand has 9 states, 8 states have (on average 7.25) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-19 21:55:05,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:55:05,473 INFO L93 Difference]: Finished difference Result 254 states and 334 transitions. [2022-07-19 21:55:05,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:55:05,474 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.25) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 131 [2022-07-19 21:55:05,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:55:05,475 INFO L225 Difference]: With dead ends: 254 [2022-07-19 21:55:05,475 INFO L226 Difference]: Without dead ends: 252 [2022-07-19 21:55:05,476 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-07-19 21:55:05,476 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 115 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 991 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 1045 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 991 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 21:55:05,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 555 Invalid, 1045 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 991 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 21:55:05,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 252 states. [2022-07-19 21:55:05,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 252 to 246. [2022-07-19 21:55:05,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 246 states, 161 states have (on average 1.15527950310559) internal successors, (186), 163 states have internal predecessors, (186), 63 states have call successors, (63), 19 states have call predecessors, (63), 21 states have return successors, (77), 63 states have call predecessors, (77), 62 states have call successors, (77) [2022-07-19 21:55:05,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 246 states to 246 states and 326 transitions. [2022-07-19 21:55:05,487 INFO L78 Accepts]: Start accepts. Automaton has 246 states and 326 transitions. Word has length 131 [2022-07-19 21:55:05,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:55:05,487 INFO L495 AbstractCegarLoop]: Abstraction has 246 states and 326 transitions. [2022-07-19 21:55:05,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.25) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-19 21:55:05,487 INFO L276 IsEmpty]: Start isEmpty. Operand 246 states and 326 transitions. [2022-07-19 21:55:05,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-19 21:55:05,488 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:55:05,488 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:55:05,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 21:55:05,489 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:55:05,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:55:05,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1113949143, now seen corresponding path program 1 times [2022-07-19 21:55:05,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:55:05,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103522844] [2022-07-19 21:55:05,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:05,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:55:05,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:05,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:55:05,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:05,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:55:05,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:05,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:55:05,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:05,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:55:05,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:05,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:55:05,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:05,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 21:55:05,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:05,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 21:55:05,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:05,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 21:55:05,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:05,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 21:55:05,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:05,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 21:55:05,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:05,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 21:55:05,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:05,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-19 21:55:05,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:05,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 21:55:05,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:05,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 21:55:05,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:05,976 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-07-19 21:55:05,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:55:05,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103522844] [2022-07-19 21:55:05,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103522844] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:55:05,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [877912440] [2022-07-19 21:55:05,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:05,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:55:05,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:55:06,028 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:55:06,048 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 21:55:06,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:06,438 INFO L263 TraceCheckSpWp]: Trace formula consists of 2711 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-19 21:55:06,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:55:06,477 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 21:55:06,616 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-19 21:55:06,616 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:55:06,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [877912440] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:55:06,616 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:55:06,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 17 [2022-07-19 21:55:06,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006918052] [2022-07-19 21:55:06,616 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:55:06,616 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 21:55:06,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:55:06,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 21:55:06,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-07-19 21:55:06,617 INFO L87 Difference]: Start difference. First operand 246 states and 326 transitions. Second operand has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 10 states have internal predecessors, (68), 5 states have call successors, (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) [2022-07-19 21:55:06,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:55:06,667 INFO L93 Difference]: Finished difference Result 492 states and 649 transitions. [2022-07-19 21:55:06,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 21:55:06,667 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 10 states have internal predecessors, (68), 5 states have call successors, (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 125 [2022-07-19 21:55:06,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:55:06,668 INFO L225 Difference]: With dead ends: 492 [2022-07-19 21:55:06,668 INFO L226 Difference]: Without dead ends: 259 [2022-07-19 21:55:06,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 147 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-07-19 21:55:06,670 INFO L413 NwaCegarLoop]: 210 mSDtfsCounter, 32 mSDsluCounter, 994 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1204 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 64 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 21:55:06,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 1204 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 64 Unchecked, 0.0s Time] [2022-07-19 21:55:06,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-07-19 21:55:06,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 259. [2022-07-19 21:55:06,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 259 states, 173 states have (on average 1.1618497109826589) internal successors, (201), 175 states have internal predecessors, (201), 63 states have call successors, (63), 20 states have call predecessors, (63), 22 states have return successors, (77), 63 states have call predecessors, (77), 62 states have call successors, (77) [2022-07-19 21:55:06,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 259 states to 259 states and 341 transitions. [2022-07-19 21:55:06,680 INFO L78 Accepts]: Start accepts. Automaton has 259 states and 341 transitions. Word has length 125 [2022-07-19 21:55:06,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:55:06,680 INFO L495 AbstractCegarLoop]: Abstraction has 259 states and 341 transitions. [2022-07-19 21:55:06,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 5.666666666666667) internal successors, (68), 10 states have internal predecessors, (68), 5 states have call successors, (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) [2022-07-19 21:55:06,680 INFO L276 IsEmpty]: Start isEmpty. Operand 259 states and 341 transitions. [2022-07-19 21:55:06,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-19 21:55:06,681 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:55:06,681 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:55:06,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-19 21:55:06,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:55:06,902 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:55:06,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:55:06,902 INFO L85 PathProgramCache]: Analyzing trace with hash -1997458133, now seen corresponding path program 1 times [2022-07-19 21:55:06,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:55:06,902 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526440837] [2022-07-19 21:55:06,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:06,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:55:06,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:06,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:55:06,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:06,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:55:07,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:07,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:55:07,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:07,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:55:07,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:07,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:55:07,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:07,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 21:55:07,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:07,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 21:55:07,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:07,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 21:55:07,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:07,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 21:55:07,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:07,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 21:55:07,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:07,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 21:55:07,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:07,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-19 21:55:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:07,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 21:55:07,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:07,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 21:55:07,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:07,087 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 105 trivial. 0 not checked. [2022-07-19 21:55:07,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:55:07,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526440837] [2022-07-19 21:55:07,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526440837] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:55:07,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [600516089] [2022-07-19 21:55:07,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:07,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:55:07,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:55:07,089 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:55:07,090 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-19 21:55:07,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:07,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 2706 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 21:55:07,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:55:07,475 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-19 21:55:07,476 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:55:07,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [600516089] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:55:07,476 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:55:07,476 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-19 21:55:07,476 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441313276] [2022-07-19 21:55:07,477 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:55:07,477 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:55:07,477 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:55:07,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:55:07,478 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:55:07,478 INFO L87 Difference]: Start difference. First operand 259 states and 341 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) [2022-07-19 21:55:07,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:55:07,508 INFO L93 Difference]: Finished difference Result 508 states and 681 transitions. [2022-07-19 21:55:07,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:55:07,509 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 125 [2022-07-19 21:55:07,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:55:07,510 INFO L225 Difference]: With dead ends: 508 [2022-07-19 21:55:07,510 INFO L226 Difference]: Without dead ends: 275 [2022-07-19 21:55:07,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:55:07,512 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 20 mSDsluCounter, 411 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 637 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 [2022-07-19 21:55:07,512 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 637 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 21:55:07,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2022-07-19 21:55:07,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 255. [2022-07-19 21:55:07,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 170 states have (on average 1.1588235294117648) internal successors, (197), 171 states have internal predecessors, (197), 63 states have call successors, (63), 20 states have call predecessors, (63), 21 states have return successors, (76), 63 states have call predecessors, (76), 62 states have call successors, (76) [2022-07-19 21:55:07,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 336 transitions. [2022-07-19 21:55:07,526 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 336 transitions. Word has length 125 [2022-07-19 21:55:07,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:55:07,527 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 336 transitions. [2022-07-19 21:55:07,527 INFO L496 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) [2022-07-19 21:55:07,527 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 336 transitions. [2022-07-19 21:55:07,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-19 21:55:07,528 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:55:07,528 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:55:07,550 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-19 21:55:07,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-19 21:55:07,742 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:55:07,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:55:07,743 INFO L85 PathProgramCache]: Analyzing trace with hash 265733617, now seen corresponding path program 1 times [2022-07-19 21:55:07,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:55:07,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392100126] [2022-07-19 21:55:07,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:07,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:55:07,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:07,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:55:07,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:07,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:55:07,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:07,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:55:07,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:07,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:55:07,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:07,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:55:07,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:07,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 21:55:07,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:07,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 21:55:07,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:07,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 21:55:07,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:07,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 21:55:07,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:07,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 21:55:07,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:07,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 21:55:07,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:07,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 21:55:07,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:07,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-19 21:55:07,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:07,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-19 21:55:07,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:07,965 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-07-19 21:55:07,965 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:55:07,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392100126] [2022-07-19 21:55:07,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392100126] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:55:07,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2011970947] [2022-07-19 21:55:07,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:07,965 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:55:07,966 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:55:07,967 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:55:07,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-19 21:55:08,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:08,344 INFO L263 TraceCheckSpWp]: Trace formula consists of 2723 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 21:55:08,347 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:55:08,471 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-19 21:55:08,471 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:55:08,472 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2011970947] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:55:08,473 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:55:08,473 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2022-07-19 21:55:08,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [812261598] [2022-07-19 21:55:08,473 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:55:08,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:55:08,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:55:08,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:55:08,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-07-19 21:55:08,475 INFO L87 Difference]: Start difference. First operand 255 states and 336 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-19 21:55:08,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:55:08,631 INFO L93 Difference]: Finished difference Result 528 states and 713 transitions. [2022-07-19 21:55:08,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:55:08,631 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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 129 [2022-07-19 21:55:08,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:55:08,633 INFO L225 Difference]: With dead ends: 528 [2022-07-19 21:55:08,633 INFO L226 Difference]: Without dead ends: 295 [2022-07-19 21:55:08,634 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 153 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:55:08,635 INFO L413 NwaCegarLoop]: 217 mSDtfsCounter, 42 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 748 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 21:55:08,635 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 748 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 42 Unchecked, 0.1s Time] [2022-07-19 21:55:08,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2022-07-19 21:55:08,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 271. [2022-07-19 21:55:08,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 186 states have (on average 1.1720430107526882) internal successors, (218), 187 states have internal predecessors, (218), 63 states have call successors, (63), 20 states have call predecessors, (63), 21 states have return successors, (76), 63 states have call predecessors, (76), 62 states have call successors, (76) [2022-07-19 21:55:08,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 357 transitions. [2022-07-19 21:55:08,650 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 357 transitions. Word has length 129 [2022-07-19 21:55:08,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:55:08,651 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 357 transitions. [2022-07-19 21:55:08,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 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) [2022-07-19 21:55:08,651 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 357 transitions. [2022-07-19 21:55:08,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-19 21:55:08,652 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:55:08,652 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:55:08,689 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-19 21:55:08,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-19 21:55:08,873 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:55:08,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:55:08,874 INFO L85 PathProgramCache]: Analyzing trace with hash -1353241297, now seen corresponding path program 1 times [2022-07-19 21:55:08,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:55:08,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1913401894] [2022-07-19 21:55:08,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:08,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:55:08,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:09,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:55:09,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:09,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:55:09,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:09,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:55:09,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:09,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:55:09,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:09,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:55:09,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:09,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 21:55:09,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:09,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 21:55:09,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:09,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 21:55:09,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:09,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 21:55:09,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:09,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 21:55:09,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:09,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 21:55:09,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:09,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-19 21:55:09,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:09,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-19 21:55:09,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:09,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-19 21:55:09,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:09,148 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 6 proven. 16 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-07-19 21:55:09,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:55:09,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1913401894] [2022-07-19 21:55:09,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1913401894] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:55:09,149 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127205686] [2022-07-19 21:55:09,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:09,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:55:09,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:55:09,164 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:55:09,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-19 21:55:09,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:09,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 2718 conjuncts, 28 conjunts are in the unsatisfiable core [2022-07-19 21:55:09,555 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:55:09,591 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-19 21:55:09,591 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:55:09,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127205686] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:55:09,592 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:55:09,592 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2022-07-19 21:55:09,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983574789] [2022-07-19 21:55:09,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:55:09,592 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:55:09,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:55:09,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:55:09,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:55:09,593 INFO L87 Difference]: Start difference. First operand 271 states and 357 transitions. Second operand has 9 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 3 states have call successors, (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) [2022-07-19 21:55:09,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:55:09,700 INFO L93 Difference]: Finished difference Result 528 states and 697 transitions. [2022-07-19 21:55:09,700 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:55:09,700 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 3 states have call successors, (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 129 [2022-07-19 21:55:09,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:55:09,702 INFO L225 Difference]: With dead ends: 528 [2022-07-19 21:55:09,702 INFO L226 Difference]: Without dead ends: 281 [2022-07-19 21:55:09,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 154 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:55:09,703 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 12 mSDsluCounter, 1374 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1578 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 21:55:09,703 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1578 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 21:55:09,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 281 states. [2022-07-19 21:55:09,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 281 to 276. [2022-07-19 21:55:09,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 190 states have (on average 1.168421052631579) internal successors, (222), 192 states have internal predecessors, (222), 63 states have call successors, (63), 20 states have call predecessors, (63), 22 states have return successors, (81), 63 states have call predecessors, (81), 62 states have call successors, (81) [2022-07-19 21:55:09,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 366 transitions. [2022-07-19 21:55:09,713 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 366 transitions. Word has length 129 [2022-07-19 21:55:09,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:55:09,714 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 366 transitions. [2022-07-19 21:55:09,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.375) internal successors, (75), 8 states have internal predecessors, (75), 3 states have call successors, (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) [2022-07-19 21:55:09,714 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 366 transitions. [2022-07-19 21:55:09,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-19 21:55:09,715 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:55:09,715 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:55:09,738 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-19 21:55:09,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-19 21:55:09,936 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:55:09,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:55:09,936 INFO L85 PathProgramCache]: Analyzing trace with hash 498704820, now seen corresponding path program 1 times [2022-07-19 21:55:09,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:55:09,936 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972915028] [2022-07-19 21:55:09,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:09,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:55:09,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:55:10,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:55:10,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:55:10,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:55:10,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:55:10,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:55:10,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 21:55:10,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 21:55:10,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 21:55:10,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 21:55:10,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 21:55:10,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 21:55:10,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 21:55:10,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 21:55:10,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,078 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-07-19 21:55:10,078 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:55:10,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972915028] [2022-07-19 21:55:10,078 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972915028] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:55:10,078 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057696164] [2022-07-19 21:55:10,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:10,079 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:55:10,079 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:55:10,080 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:55:10,107 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-19 21:55:10,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,510 INFO L263 TraceCheckSpWp]: Trace formula consists of 2723 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 21:55:10,512 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:55:10,518 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 50 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-19 21:55:10,519 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:55:10,519 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057696164] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:55:10,519 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:55:10,519 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-19 21:55:10,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390903087] [2022-07-19 21:55:10,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:55:10,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:55:10,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:55:10,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:55:10,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:55:10,527 INFO L87 Difference]: Start difference. First operand 276 states and 366 transitions. Second operand has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2022-07-19 21:55:10,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:55:10,549 INFO L93 Difference]: Finished difference Result 541 states and 725 transitions. [2022-07-19 21:55:10,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:55:10,550 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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 131 [2022-07-19 21:55:10,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:55:10,551 INFO L225 Difference]: With dead ends: 541 [2022-07-19 21:55:10,551 INFO L226 Difference]: Without dead ends: 287 [2022-07-19 21:55:10,553 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:55:10,554 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 9 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 630 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 21:55:10,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 630 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 21:55:10,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 287 states. [2022-07-19 21:55:10,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 287 to 278. [2022-07-19 21:55:10,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 278 states, 192 states have (on average 1.15625) internal successors, (222), 194 states have internal predecessors, (222), 63 states have call successors, (63), 20 states have call predecessors, (63), 22 states have return successors, (81), 63 states have call predecessors, (81), 62 states have call successors, (81) [2022-07-19 21:55:10,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 278 states to 278 states and 366 transitions. [2022-07-19 21:55:10,567 INFO L78 Accepts]: Start accepts. Automaton has 278 states and 366 transitions. Word has length 131 [2022-07-19 21:55:10,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:55:10,568 INFO L495 AbstractCegarLoop]: Abstraction has 278 states and 366 transitions. [2022-07-19 21:55:10,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.75) internal successors, (71), 4 states have internal predecessors, (71), 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) [2022-07-19 21:55:10,568 INFO L276 IsEmpty]: Start isEmpty. Operand 278 states and 366 transitions. [2022-07-19 21:55:10,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-19 21:55:10,569 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:55:10,569 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:55:10,591 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-19 21:55:10,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-19 21:55:10,789 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:55:10,789 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:55:10,790 INFO L85 PathProgramCache]: Analyzing trace with hash 248293624, now seen corresponding path program 1 times [2022-07-19 21:55:10,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:55:10,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778492541] [2022-07-19 21:55:10,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:10,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:55:10,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:55:10,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:55:10,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:55:10,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:55:10,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:55:10,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:55:10,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 21:55:10,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 21:55:10,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 21:55:10,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 21:55:10,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 21:55:10,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 21:55:10,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 21:55:10,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 21:55:10,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:10,931 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-07-19 21:55:10,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:55:10,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778492541] [2022-07-19 21:55:10,931 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778492541] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:55:10,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [842014872] [2022-07-19 21:55:10,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:10,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:55:10,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:55:10,933 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:55:10,934 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-19 21:55:11,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:11,320 INFO L263 TraceCheckSpWp]: Trace formula consists of 2725 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 21:55:11,323 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:55:11,327 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-19 21:55:11,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:55:11,328 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [842014872] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:55:11,328 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:55:11,328 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-19 21:55:11,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983199357] [2022-07-19 21:55:11,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:55:11,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:55:11,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:55:11,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:55:11,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:55:11,329 INFO L87 Difference]: Start difference. First operand 278 states and 366 transitions. Second operand has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (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) [2022-07-19 21:55:11,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:55:11,351 INFO L93 Difference]: Finished difference Result 552 states and 740 transitions. [2022-07-19 21:55:11,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:55:11,352 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (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 131 [2022-07-19 21:55:11,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:55:11,353 INFO L225 Difference]: With dead ends: 552 [2022-07-19 21:55:11,353 INFO L226 Difference]: Without dead ends: 296 [2022-07-19 21:55:11,354 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:55:11,355 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 34 mSDsluCounter, 416 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 628 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 [2022-07-19 21:55:11,355 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 628 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 21:55:11,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 296 states. [2022-07-19 21:55:11,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 296 to 272. [2022-07-19 21:55:11,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 186 states have (on average 1.1344086021505377) internal successors, (211), 188 states have internal predecessors, (211), 63 states have call successors, (63), 20 states have call predecessors, (63), 22 states have return successors, (81), 63 states have call predecessors, (81), 62 states have call successors, (81) [2022-07-19 21:55:11,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 355 transitions. [2022-07-19 21:55:11,365 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 355 transitions. Word has length 131 [2022-07-19 21:55:11,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:55:11,366 INFO L495 AbstractCegarLoop]: Abstraction has 272 states and 355 transitions. [2022-07-19 21:55:11,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.5) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (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) [2022-07-19 21:55:11,366 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 355 transitions. [2022-07-19 21:55:11,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-19 21:55:11,367 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:55:11,367 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:55:11,390 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-19 21:55:11,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-19 21:55:11,585 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:55:11,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:55:11,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1279334522, now seen corresponding path program 1 times [2022-07-19 21:55:11,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:55:11,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1980904] [2022-07-19 21:55:11,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:11,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:55:11,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:11,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:55:11,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:11,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:55:11,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:11,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:55:11,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:11,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:55:11,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:11,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:55:11,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:11,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:55:11,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:11,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 21:55:11,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:11,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 21:55:11,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:11,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 21:55:11,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:12,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 21:55:12,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:12,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 21:55:12,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:12,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 21:55:12,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:12,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 21:55:12,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:12,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 21:55:12,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:12,046 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-07-19 21:55:12,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:55:12,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1980904] [2022-07-19 21:55:12,051 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1980904] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:55:12,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1944648250] [2022-07-19 21:55:12,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:12,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:55:12,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:55:12,053 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:55:12,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-19 21:55:12,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:12,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 2720 conjuncts, 53 conjunts are in the unsatisfiable core [2022-07-19 21:55:12,455 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:55:12,483 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 21:55:12,487 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 21:55:13,021 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 79 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-19 21:55:13,022 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:55:13,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1944648250] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:55:13,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:55:13,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [12] total 19 [2022-07-19 21:55:13,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915514617] [2022-07-19 21:55:13,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:55:13,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-19 21:55:13,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:55:13,024 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-19 21:55:13,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=290, Unknown=0, NotChecked=0, Total=342 [2022-07-19 21:55:13,024 INFO L87 Difference]: Start difference. First operand 272 states and 355 transitions. Second operand has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 12 states have internal predecessors, (87), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2022-07-19 21:55:13,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:55:13,160 INFO L93 Difference]: Finished difference Result 614 states and 793 transitions. [2022-07-19 21:55:13,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 21:55:13,160 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 12 states have internal predecessors, (87), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 131 [2022-07-19 21:55:13,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:55:13,163 INFO L225 Difference]: With dead ends: 614 [2022-07-19 21:55:13,163 INFO L226 Difference]: Without dead ends: 424 [2022-07-19 21:55:13,164 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 143 SyntacticMatches, 9 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2022-07-19 21:55:13,166 INFO L413 NwaCegarLoop]: 261 mSDtfsCounter, 65 mSDsluCounter, 859 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 1120 SdHoareTripleChecker+Invalid, 217 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 21:55:13,166 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 1120 Invalid, 217 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 111 Invalid, 0 Unknown, 88 Unchecked, 0.1s Time] [2022-07-19 21:55:13,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 424 states. [2022-07-19 21:55:13,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 424 to 390. [2022-07-19 21:55:13,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 390 states, 285 states have (on average 1.143859649122807) internal successors, (326), 290 states have internal predecessors, (326), 74 states have call successors, (74), 28 states have call predecessors, (74), 30 states have return successors, (98), 71 states have call predecessors, (98), 73 states have call successors, (98) [2022-07-19 21:55:13,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 390 states to 390 states and 498 transitions. [2022-07-19 21:55:13,181 INFO L78 Accepts]: Start accepts. Automaton has 390 states and 498 transitions. Word has length 131 [2022-07-19 21:55:13,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:55:13,181 INFO L495 AbstractCegarLoop]: Abstraction has 390 states and 498 transitions. [2022-07-19 21:55:13,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 6.6923076923076925) internal successors, (87), 12 states have internal predecessors, (87), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2022-07-19 21:55:13,182 INFO L276 IsEmpty]: Start isEmpty. Operand 390 states and 498 transitions. [2022-07-19 21:55:13,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-19 21:55:13,183 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:55:13,183 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:55:13,204 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-19 21:55:13,404 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-19 21:55:13,404 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:55:13,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:55:13,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1498189240, now seen corresponding path program 1 times [2022-07-19 21:55:13,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:55:13,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [268186431] [2022-07-19 21:55:13,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:13,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:55:13,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:13,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:55:13,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:13,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:55:13,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:13,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:55:13,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:13,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:55:13,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:13,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:55:13,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:13,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:55:13,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:13,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 21:55:13,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:13,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 21:55:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:13,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 21:55:13,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:13,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 21:55:13,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:13,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 21:55:13,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:13,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 21:55:13,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:13,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 21:55:13,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:13,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 21:55:13,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:13,538 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-19 21:55:13,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:55:13,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [268186431] [2022-07-19 21:55:13,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [268186431] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:55:13,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:55:13,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:55:13,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787036753] [2022-07-19 21:55:13,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:55:13,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:55:13,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:55:13,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:55:13,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:55:13,540 INFO L87 Difference]: Start difference. First operand 390 states and 498 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 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) [2022-07-19 21:55:13,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:55:13,826 INFO L93 Difference]: Finished difference Result 650 states and 844 transitions. [2022-07-19 21:55:13,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:55:13,827 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 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 131 [2022-07-19 21:55:13,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:55:13,829 INFO L225 Difference]: With dead ends: 650 [2022-07-19 21:55:13,829 INFO L226 Difference]: Without dead ends: 380 [2022-07-19 21:55:13,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:55:13,830 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 95 mSDsluCounter, 145 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 337 SdHoareTripleChecker+Invalid, 420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 21:55:13,830 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [120 Valid, 337 Invalid, 420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 21:55:13,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2022-07-19 21:55:13,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 377. [2022-07-19 21:55:13,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 273 states have (on average 1.1391941391941391) internal successors, (311), 277 states have internal predecessors, (311), 74 states have call successors, (74), 28 states have call predecessors, (74), 29 states have return successors, (96), 71 states have call predecessors, (96), 73 states have call successors, (96) [2022-07-19 21:55:13,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 481 transitions. [2022-07-19 21:55:13,845 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 481 transitions. Word has length 131 [2022-07-19 21:55:13,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:55:13,845 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 481 transitions. [2022-07-19 21:55:13,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 4 states have internal predecessors, (71), 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) [2022-07-19 21:55:13,846 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 481 transitions. [2022-07-19 21:55:13,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-19 21:55:13,847 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:55:13,848 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:55:13,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 21:55:13,848 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:55:13,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:55:13,848 INFO L85 PathProgramCache]: Analyzing trace with hash -245639284, now seen corresponding path program 1 times [2022-07-19 21:55:13,848 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:55:13,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1019232526] [2022-07-19 21:55:13,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:13,849 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:55:13,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:14,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:55:14,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:14,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:55:14,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:14,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:55:14,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:14,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:55:14,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:14,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:55:14,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:14,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:55:14,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:14,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 21:55:14,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:14,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 21:55:14,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:14,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 21:55:14,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:14,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:55:14,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:14,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 21:55:14,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:14,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 21:55:14,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:14,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-19 21:55:14,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:14,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-19 21:55:14,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:14,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-19 21:55:14,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:14,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-19 21:55:14,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:14,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-19 21:55:14,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:14,358 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 10 proven. 14 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-07-19 21:55:14,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:55:14,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1019232526] [2022-07-19 21:55:14,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1019232526] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:55:14,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [785983512] [2022-07-19 21:55:14,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:14,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:55:14,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:55:14,360 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:55:14,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-19 21:55:14,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:14,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 2750 conjuncts, 70 conjunts are in the unsatisfiable core [2022-07-19 21:55:14,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:55:14,842 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 21:55:23,390 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:55:23,391 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-07-19 21:55:38,195 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 69 proven. 23 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-19 21:55:38,195 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:55:39,616 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [785983512] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:55:39,616 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 21:55:39,616 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2022-07-19 21:55:39,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637752871] [2022-07-19 21:55:39,616 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 21:55:39,617 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-07-19 21:55:39,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:55:39,617 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-07-19 21:55:39,617 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1498, Unknown=2, NotChecked=0, Total=1640 [2022-07-19 21:55:39,618 INFO L87 Difference]: Start difference. First operand 377 states and 481 transitions. Second operand has 34 states, 32 states have (on average 4.5625) internal successors, (146), 30 states have internal predecessors, (146), 18 states have call successors, (36), 6 states have call predecessors, (36), 6 states have return successors, (33), 17 states have call predecessors, (33), 18 states have call successors, (33) [2022-07-19 21:55:44,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:55:44,267 INFO L93 Difference]: Finished difference Result 839 states and 1109 transitions. [2022-07-19 21:55:44,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 51 states. [2022-07-19 21:55:44,268 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 4.5625) internal successors, (146), 30 states have internal predecessors, (146), 18 states have call successors, (36), 6 states have call predecessors, (36), 6 states have return successors, (33), 17 states have call predecessors, (33), 18 states have call successors, (33) Word has length 146 [2022-07-19 21:55:44,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:55:44,271 INFO L225 Difference]: With dead ends: 839 [2022-07-19 21:55:44,271 INFO L226 Difference]: Without dead ends: 581 [2022-07-19 21:55:44,273 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 318 GetRequests, 219 SyntacticMatches, 21 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2049 ImplicationChecksByTransitivity, 27.5s TimeCoverageRelationStatistics Valid=560, Invalid=5758, Unknown=2, NotChecked=0, Total=6320 [2022-07-19 21:55:44,273 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 432 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 3232 mSolverCounterSat, 384 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 460 SdHoareTripleChecker+Valid, 1225 SdHoareTripleChecker+Invalid, 4819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 384 IncrementalHoareTripleChecker+Valid, 3232 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1203 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-19 21:55:44,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [460 Valid, 1225 Invalid, 4819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [384 Valid, 3232 Invalid, 0 Unknown, 1203 Unchecked, 1.6s Time] [2022-07-19 21:55:44,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2022-07-19 21:55:44,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 485. [2022-07-19 21:55:44,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 485 states, 342 states have (on average 1.1198830409356726) internal successors, (383), 349 states have internal predecessors, (383), 101 states have call successors, (101), 35 states have call predecessors, (101), 41 states have return successors, (146), 100 states have call predecessors, (146), 100 states have call successors, (146) [2022-07-19 21:55:44,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 485 states to 485 states and 630 transitions. [2022-07-19 21:55:44,294 INFO L78 Accepts]: Start accepts. Automaton has 485 states and 630 transitions. Word has length 146 [2022-07-19 21:55:44,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:55:44,294 INFO L495 AbstractCegarLoop]: Abstraction has 485 states and 630 transitions. [2022-07-19 21:55:44,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 4.5625) internal successors, (146), 30 states have internal predecessors, (146), 18 states have call successors, (36), 6 states have call predecessors, (36), 6 states have return successors, (33), 17 states have call predecessors, (33), 18 states have call successors, (33) [2022-07-19 21:55:44,295 INFO L276 IsEmpty]: Start isEmpty. Operand 485 states and 630 transitions. [2022-07-19 21:55:44,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-19 21:55:44,296 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:55:44,296 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 21:55:44,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-19 21:55:44,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:55:44,511 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:55:44,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:55:44,512 INFO L85 PathProgramCache]: Analyzing trace with hash 2045483860, now seen corresponding path program 1 times [2022-07-19 21:55:44,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:55:44,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039211714] [2022-07-19 21:55:44,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:44,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:55:44,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:44,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:55:44,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:44,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:55:44,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:44,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:55:44,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:44,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:55:44,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:44,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:55:44,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:44,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:55:44,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:44,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 21:55:44,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:44,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 21:55:44,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:44,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 21:55:44,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:44,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:55:44,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:44,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 21:55:44,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:44,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 21:55:44,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:44,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 21:55:44,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:44,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 21:55:44,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:44,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-19 21:55:44,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:44,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-19 21:55:44,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:44,780 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 23 proven. 3 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-07-19 21:55:44,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:55:44,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039211714] [2022-07-19 21:55:44,780 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039211714] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:55:44,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [431840185] [2022-07-19 21:55:44,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:44,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:55:44,781 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:55:44,782 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:55:44,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-19 21:55:45,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:45,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 2761 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-19 21:55:45,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:55:45,286 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 62 proven. 14 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-19 21:55:45,286 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:55:45,525 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 23 proven. 3 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-07-19 21:55:45,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [431840185] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:55:45,525 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:55:45,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 15, 11] total 22 [2022-07-19 21:55:45,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725426311] [2022-07-19 21:55:45,525 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:55:45,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-19 21:55:45,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:55:45,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-19 21:55:45,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2022-07-19 21:55:45,526 INFO L87 Difference]: Start difference. First operand 485 states and 630 transitions. Second operand has 22 states, 19 states have (on average 5.157894736842105) internal successors, (98), 17 states have internal predecessors, (98), 5 states have call successors, (24), 4 states have call predecessors, (24), 7 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2022-07-19 21:55:46,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:55:46,794 INFO L93 Difference]: Finished difference Result 774 states and 995 transitions. [2022-07-19 21:55:46,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-19 21:55:46,794 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 5.157894736842105) internal successors, (98), 17 states have internal predecessors, (98), 5 states have call successors, (24), 4 states have call predecessors, (24), 7 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) Word has length 146 [2022-07-19 21:55:46,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:55:46,796 INFO L225 Difference]: With dead ends: 774 [2022-07-19 21:55:46,796 INFO L226 Difference]: Without dead ends: 408 [2022-07-19 21:55:46,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 314 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=141, Invalid=1191, Unknown=0, NotChecked=0, Total=1332 [2022-07-19 21:55:46,798 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 123 mSDsluCounter, 920 mSDsCounter, 0 mSdLazyCounter, 2732 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 1102 SdHoareTripleChecker+Invalid, 2807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 2732 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 21:55:46,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 1102 Invalid, 2807 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 2732 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-07-19 21:55:46,798 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-07-19 21:55:46,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 404. [2022-07-19 21:55:46,811 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 404 states, 289 states have (on average 1.0865051903114187) internal successors, (314), 297 states have internal predecessors, (314), 76 states have call successors, (76), 34 states have call predecessors, (76), 38 states have return successors, (109), 72 states have call predecessors, (109), 75 states have call successors, (109) [2022-07-19 21:55:46,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 404 states to 404 states and 499 transitions. [2022-07-19 21:55:46,813 INFO L78 Accepts]: Start accepts. Automaton has 404 states and 499 transitions. Word has length 146 [2022-07-19 21:55:46,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:55:46,813 INFO L495 AbstractCegarLoop]: Abstraction has 404 states and 499 transitions. [2022-07-19 21:55:46,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 5.157894736842105) internal successors, (98), 17 states have internal predecessors, (98), 5 states have call successors, (24), 4 states have call predecessors, (24), 7 states have return successors, (22), 5 states have call predecessors, (22), 5 states have call successors, (22) [2022-07-19 21:55:46,814 INFO L276 IsEmpty]: Start isEmpty. Operand 404 states and 499 transitions. [2022-07-19 21:55:46,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-19 21:55:46,815 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:55:46,815 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 21:55:46,837 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-19 21:55:47,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:55:47,035 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:55:47,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:55:47,036 INFO L85 PathProgramCache]: Analyzing trace with hash 2138320089, now seen corresponding path program 1 times [2022-07-19 21:55:47,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:55:47,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1297641555] [2022-07-19 21:55:47,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:47,036 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:55:47,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:47,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:55:47,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:47,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:55:47,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:47,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:55:47,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:47,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:55:47,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:47,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:55:47,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:47,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:55:47,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:47,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 21:55:47,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:47,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 21:55:47,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:47,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 21:55:47,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:47,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:55:47,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:47,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 21:55:47,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:47,548 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 21:55:47,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:47,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 21:55:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:47,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-19 21:55:47,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:47,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-19 21:55:47,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:47,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-19 21:55:47,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:47,571 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-07-19 21:55:47,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:55:47,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1297641555] [2022-07-19 21:55:47,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1297641555] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:55:47,571 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:55:47,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 21:55:47,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651369128] [2022-07-19 21:55:47,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:55:47,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 21:55:47,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:55:47,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 21:55:47,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:55:47,573 INFO L87 Difference]: Start difference. First operand 404 states and 499 transitions. Second operand has 14 states, 13 states have (on average 4.769230769230769) internal successors, (62), 10 states have internal predecessors, (62), 6 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2022-07-19 21:55:48,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:55:48,587 INFO L93 Difference]: Finished difference Result 481 states and 636 transitions. [2022-07-19 21:55:48,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 21:55:48,588 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.769230769230769) internal successors, (62), 10 states have internal predecessors, (62), 6 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) Word has length 148 [2022-07-19 21:55:48,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:55:48,591 INFO L225 Difference]: With dead ends: 481 [2022-07-19 21:55:48,591 INFO L226 Difference]: Without dead ends: 479 [2022-07-19 21:55:48,591 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2022-07-19 21:55:48,592 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 147 mSDsluCounter, 499 mSDsCounter, 0 mSdLazyCounter, 2055 mSolverCounterSat, 117 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 739 SdHoareTripleChecker+Invalid, 2172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 117 IncrementalHoareTripleChecker+Valid, 2055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 21:55:48,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 739 Invalid, 2172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [117 Valid, 2055 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 21:55:48,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 479 states. [2022-07-19 21:55:48,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 479 to 454. [2022-07-19 21:55:48,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 454 states, 311 states have (on average 1.0868167202572347) internal successors, (338), 319 states have internal predecessors, (338), 101 states have call successors, (101), 35 states have call predecessors, (101), 41 states have return successors, (151), 99 states have call predecessors, (151), 100 states have call successors, (151) [2022-07-19 21:55:48,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 454 states to 454 states and 590 transitions. [2022-07-19 21:55:48,614 INFO L78 Accepts]: Start accepts. Automaton has 454 states and 590 transitions. Word has length 148 [2022-07-19 21:55:48,615 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:55:48,615 INFO L495 AbstractCegarLoop]: Abstraction has 454 states and 590 transitions. [2022-07-19 21:55:48,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.769230769230769) internal successors, (62), 10 states have internal predecessors, (62), 6 states have call successors, (17), 4 states have call predecessors, (17), 2 states have return successors, (15), 6 states have call predecessors, (15), 5 states have call successors, (15) [2022-07-19 21:55:48,615 INFO L276 IsEmpty]: Start isEmpty. Operand 454 states and 590 transitions. [2022-07-19 21:55:48,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-19 21:55:48,616 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:55:48,616 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:55:48,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 21:55:48,616 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:55:48,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:55:48,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1267719885, now seen corresponding path program 1 times [2022-07-19 21:55:48,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:55:48,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642271717] [2022-07-19 21:55:48,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:48,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:55:48,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:48,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:55:48,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:48,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:55:48,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:48,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:55:48,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:48,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:55:48,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:48,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:55:48,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:48,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:55:48,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:48,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 21:55:48,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:49,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 21:55:49,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:49,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 21:55:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:49,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 21:55:49,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:49,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 21:55:49,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:49,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 21:55:49,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:49,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 21:55:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:49,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2022-07-19 21:55:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:49,158 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-07-19 21:55:49,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:55:49,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642271717] [2022-07-19 21:55:49,159 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642271717] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:55:49,159 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009990339] [2022-07-19 21:55:49,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:49,159 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:55:49,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:55:49,184 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:55:49,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-19 21:55:49,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:49,615 INFO L263 TraceCheckSpWp]: Trace formula consists of 2734 conjuncts, 53 conjunts are in the unsatisfiable core [2022-07-19 21:55:49,618 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:55:49,699 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 21:55:49,702 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 21:55:50,449 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-19 21:55:50,449 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:55:50,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009990339] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:55:50,450 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:55:50,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [20] total 31 [2022-07-19 21:55:50,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641445039] [2022-07-19 21:55:50,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:55:50,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-19 21:55:50,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:55:50,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-19 21:55:50,451 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=848, Unknown=0, NotChecked=0, Total=930 [2022-07-19 21:55:50,451 INFO L87 Difference]: Start difference. First operand 454 states and 590 transitions. Second operand has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 12 states have internal predecessors, (93), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2022-07-19 21:55:50,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:55:50,669 INFO L93 Difference]: Finished difference Result 725 states and 914 transitions. [2022-07-19 21:55:50,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 21:55:50,669 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 12 states have internal predecessors, (93), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 137 [2022-07-19 21:55:50,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:55:50,672 INFO L225 Difference]: With dead ends: 725 [2022-07-19 21:55:50,672 INFO L226 Difference]: Without dead ends: 491 [2022-07-19 21:55:50,673 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 190 GetRequests, 151 SyntacticMatches, 8 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=93, Invalid=963, Unknown=0, NotChecked=0, Total=1056 [2022-07-19 21:55:50,673 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 49 mSDsluCounter, 2010 mSDsCounter, 0 mSdLazyCounter, 197 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 2268 SdHoareTripleChecker+Invalid, 403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 197 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 188 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 21:55:50,673 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 2268 Invalid, 403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 197 Invalid, 0 Unknown, 188 Unchecked, 0.2s Time] [2022-07-19 21:55:50,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2022-07-19 21:55:50,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 445. [2022-07-19 21:55:50,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 445 states, 312 states have (on average 1.080128205128205) internal successors, (337), 320 states have internal predecessors, (337), 89 states have call successors, (89), 38 states have call predecessors, (89), 43 states have return successors, (118), 86 states have call predecessors, (118), 88 states have call successors, (118) [2022-07-19 21:55:50,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 445 states to 445 states and 544 transitions. [2022-07-19 21:55:50,715 INFO L78 Accepts]: Start accepts. Automaton has 445 states and 544 transitions. Word has length 137 [2022-07-19 21:55:50,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:55:50,715 INFO L495 AbstractCegarLoop]: Abstraction has 445 states and 544 transitions. [2022-07-19 21:55:50,715 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.153846153846154) internal successors, (93), 12 states have internal predecessors, (93), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2022-07-19 21:55:50,716 INFO L276 IsEmpty]: Start isEmpty. Operand 445 states and 544 transitions. [2022-07-19 21:55:50,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2022-07-19 21:55:50,716 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:55:50,717 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:55:50,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-19 21:55:50,937 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-07-19 21:55:50,937 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:55:50,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:55:50,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1496366076, now seen corresponding path program 1 times [2022-07-19 21:55:50,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:55:50,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084782082] [2022-07-19 21:55:50,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:50,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:55:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:51,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:55:51,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:51,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:55:51,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:51,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:55:51,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:51,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:55:51,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:51,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:55:51,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:51,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:55:51,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:51,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 21:55:51,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:51,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 21:55:51,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:51,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 21:55:51,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:51,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 21:55:51,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:51,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 21:55:51,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:51,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 21:55:51,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:51,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-19 21:55:51,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:51,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-19 21:55:51,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:51,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 127 [2022-07-19 21:55:51,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:51,309 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-07-19 21:55:51,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:55:51,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084782082] [2022-07-19 21:55:51,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084782082] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:55:51,309 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [391763790] [2022-07-19 21:55:51,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:51,309 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:55:51,310 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:55:51,325 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:55:51,375 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-19 21:55:51,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:51,737 INFO L263 TraceCheckSpWp]: Trace formula consists of 2741 conjuncts, 33 conjunts are in the unsatisfiable core [2022-07-19 21:55:51,740 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:55:52,266 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-07-19 21:55:52,284 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 96 proven. 6 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-19 21:55:52,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:55:52,361 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2022-07-19 21:55:52,445 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-19 21:55:52,445 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 26 [2022-07-19 21:55:52,476 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2022-07-19 21:55:52,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [391763790] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:55:52,476 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:55:52,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 10] total 20 [2022-07-19 21:55:52,477 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351848476] [2022-07-19 21:55:52,477 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:55:52,478 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-19 21:55:52,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:55:52,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-19 21:55:52,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=326, Unknown=0, NotChecked=0, Total=380 [2022-07-19 21:55:52,480 INFO L87 Difference]: Start difference. First operand 445 states and 544 transitions. Second operand has 20 states, 20 states have (on average 6.5) internal successors, (130), 17 states have internal predecessors, (130), 7 states have call successors, (28), 6 states have call predecessors, (28), 4 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2022-07-19 21:55:53,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:55:53,842 INFO L93 Difference]: Finished difference Result 661 states and 796 transitions. [2022-07-19 21:55:53,843 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-19 21:55:53,843 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.5) internal successors, (130), 17 states have internal predecessors, (130), 7 states have call successors, (28), 6 states have call predecessors, (28), 4 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) Word has length 147 [2022-07-19 21:55:53,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:55:53,846 INFO L225 Difference]: With dead ends: 661 [2022-07-19 21:55:53,846 INFO L226 Difference]: Without dead ends: 416 [2022-07-19 21:55:53,848 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 302 SyntacticMatches, 15 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 286 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=173, Invalid=1017, Unknown=0, NotChecked=0, Total=1190 [2022-07-19 21:55:53,848 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 164 mSDsluCounter, 461 mSDsCounter, 0 mSdLazyCounter, 1685 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 203 SdHoareTripleChecker+Valid, 676 SdHoareTripleChecker+Invalid, 2177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 1685 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 415 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 21:55:53,848 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [203 Valid, 676 Invalid, 2177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 1685 Invalid, 0 Unknown, 415 Unchecked, 1.0s Time] [2022-07-19 21:55:53,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 416 states. [2022-07-19 21:55:53,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 416 to 403. [2022-07-19 21:55:53,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403 states, 287 states have (on average 1.0801393728222997) internal successors, (310), 291 states have internal predecessors, (310), 76 states have call successors, (76), 36 states have call predecessors, (76), 39 states have return successors, (98), 75 states have call predecessors, (98), 75 states have call successors, (98) [2022-07-19 21:55:53,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403 states to 403 states and 484 transitions. [2022-07-19 21:55:53,870 INFO L78 Accepts]: Start accepts. Automaton has 403 states and 484 transitions. Word has length 147 [2022-07-19 21:55:53,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:55:53,870 INFO L495 AbstractCegarLoop]: Abstraction has 403 states and 484 transitions. [2022-07-19 21:55:53,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.5) internal successors, (130), 17 states have internal predecessors, (130), 7 states have call successors, (28), 6 states have call predecessors, (28), 4 states have return successors, (24), 7 states have call predecessors, (24), 7 states have call successors, (24) [2022-07-19 21:55:53,871 INFO L276 IsEmpty]: Start isEmpty. Operand 403 states and 484 transitions. [2022-07-19 21:55:53,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-19 21:55:53,871 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:55:53,872 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:55:53,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-19 21:55:54,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:55:54,107 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:55:54,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:55:54,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1817590549, now seen corresponding path program 1 times [2022-07-19 21:55:54,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:55:54,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2104999662] [2022-07-19 21:55:54,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:54,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:55:54,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:54,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:55:54,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:54,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:55:54,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:54,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:55:54,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:54,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:55:54,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:54,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:55:54,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:54,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:55:54,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:54,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 21:55:54,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:54,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 21:55:54,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:54,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 21:55:54,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:54,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 21:55:54,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:54,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 21:55:54,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:54,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 21:55:54,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:54,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 21:55:54,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:54,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 21:55:54,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:54,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-19 21:55:54,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:54,416 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 30 proven. 7 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2022-07-19 21:55:54,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:55:54,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2104999662] [2022-07-19 21:55:54,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2104999662] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:55:54,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848258567] [2022-07-19 21:55:54,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:55:54,417 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:55:54,417 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:55:54,418 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:55:54,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-19 21:55:54,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:55:54,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 2719 conjuncts, 69 conjunts are in the unsatisfiable core [2022-07-19 21:55:54,857 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:55:54,891 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 21:55:55,215 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 21:55:55,215 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 30 [2022-07-19 21:55:55,221 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-19 21:55:56,140 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 67 proven. 29 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-19 21:55:56,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:55:59,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848258567] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:55:59,324 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 21:55:59,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 23] total 31 [2022-07-19 21:55:59,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144312773] [2022-07-19 21:55:59,325 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 21:55:59,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-19 21:55:59,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:55:59,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-19 21:55:59,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1799, Unknown=4, NotChecked=0, Total=1980 [2022-07-19 21:55:59,326 INFO L87 Difference]: Start difference. First operand 403 states and 484 transitions. Second operand has 31 states, 31 states have (on average 4.741935483870968) internal successors, (147), 29 states have internal predecessors, (147), 10 states have call successors, (32), 5 states have call predecessors, (32), 6 states have return successors, (29), 9 states have call predecessors, (29), 9 states have call successors, (29) [2022-07-19 21:56:03,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:56:03,546 INFO L93 Difference]: Finished difference Result 902 states and 1167 transitions. [2022-07-19 21:56:03,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-07-19 21:56:03,547 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 4.741935483870968) internal successors, (147), 29 states have internal predecessors, (147), 10 states have call successors, (32), 5 states have call predecessors, (32), 6 states have return successors, (29), 9 states have call predecessors, (29), 9 states have call successors, (29) Word has length 141 [2022-07-19 21:56:03,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:56:03,550 INFO L225 Difference]: With dead ends: 902 [2022-07-19 21:56:03,550 INFO L226 Difference]: Without dead ends: 691 [2022-07-19 21:56:03,552 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 216 SyntacticMatches, 18 SemanticMatches, 82 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2046 ImplicationChecksByTransitivity, 5.3s TimeCoverageRelationStatistics Valid=727, Invalid=6241, Unknown=4, NotChecked=0, Total=6972 [2022-07-19 21:56:03,553 INFO L413 NwaCegarLoop]: 258 mSDtfsCounter, 286 mSDsluCounter, 1445 mSDsCounter, 0 mSdLazyCounter, 4906 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 358 SdHoareTripleChecker+Valid, 1703 SdHoareTripleChecker+Invalid, 7282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 4906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2214 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-19 21:56:03,553 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [358 Valid, 1703 Invalid, 7282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 4906 Invalid, 0 Unknown, 2214 Unchecked, 2.6s Time] [2022-07-19 21:56:03,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2022-07-19 21:56:03,607 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 591. [2022-07-19 21:56:03,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 591 states, 421 states have (on average 1.0736342042755345) internal successors, (452), 430 states have internal predecessors, (452), 115 states have call successors, (115), 47 states have call predecessors, (115), 54 states have return successors, (162), 113 states have call predecessors, (162), 114 states have call successors, (162) [2022-07-19 21:56:03,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 591 states to 591 states and 729 transitions. [2022-07-19 21:56:03,610 INFO L78 Accepts]: Start accepts. Automaton has 591 states and 729 transitions. Word has length 141 [2022-07-19 21:56:03,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:56:03,610 INFO L495 AbstractCegarLoop]: Abstraction has 591 states and 729 transitions. [2022-07-19 21:56:03,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 4.741935483870968) internal successors, (147), 29 states have internal predecessors, (147), 10 states have call successors, (32), 5 states have call predecessors, (32), 6 states have return successors, (29), 9 states have call predecessors, (29), 9 states have call successors, (29) [2022-07-19 21:56:03,610 INFO L276 IsEmpty]: Start isEmpty. Operand 591 states and 729 transitions. [2022-07-19 21:56:03,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-19 21:56:03,612 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:56:03,612 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:56:03,638 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-19 21:56:03,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:56:03,832 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:56:03,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:56:03,832 INFO L85 PathProgramCache]: Analyzing trace with hash 2075755987, now seen corresponding path program 1 times [2022-07-19 21:56:03,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:56:03,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [779852484] [2022-07-19 21:56:03,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:56:03,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:56:03,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:03,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:56:03,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:03,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:56:03,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:03,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:56:03,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:03,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:56:03,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:03,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:56:03,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:03,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:56:03,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:03,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 21:56:03,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:03,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 21:56:03,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:03,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 21:56:03,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:03,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 21:56:03,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:03,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 21:56:03,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:03,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 21:56:03,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:03,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 21:56:03,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:03,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 21:56:03,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:03,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-19 21:56:03,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:03,990 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-19 21:56:03,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:56:03,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [779852484] [2022-07-19 21:56:03,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [779852484] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:56:03,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:56:03,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:56:03,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815512743] [2022-07-19 21:56:03,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:56:03,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:56:03,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:56:03,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:56:03,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:56:03,992 INFO L87 Difference]: Start difference. First operand 591 states and 729 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-19 21:56:04,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:56:04,362 INFO L93 Difference]: Finished difference Result 759 states and 943 transitions. [2022-07-19 21:56:04,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:56:04,363 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 141 [2022-07-19 21:56:04,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:56:04,365 INFO L225 Difference]: With dead ends: 759 [2022-07-19 21:56:04,365 INFO L226 Difference]: Without dead ends: 584 [2022-07-19 21:56:04,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:56:04,366 INFO L413 NwaCegarLoop]: 184 mSDtfsCounter, 122 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 147 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 21:56:04,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [147 Valid, 315 Invalid, 439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 21:56:04,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 584 states. [2022-07-19 21:56:04,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 584 to 584. [2022-07-19 21:56:04,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 415 states have (on average 1.069879518072289) internal successors, (444), 423 states have internal predecessors, (444), 115 states have call successors, (115), 47 states have call predecessors, (115), 53 states have return successors, (152), 113 states have call predecessors, (152), 114 states have call successors, (152) [2022-07-19 21:56:04,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 711 transitions. [2022-07-19 21:56:04,421 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 711 transitions. Word has length 141 [2022-07-19 21:56:04,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:56:04,421 INFO L495 AbstractCegarLoop]: Abstraction has 584 states and 711 transitions. [2022-07-19 21:56:04,421 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-19 21:56:04,421 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 711 transitions. [2022-07-19 21:56:04,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-19 21:56:04,439 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:56:04,439 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:56:04,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-19 21:56:04,439 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:56:04,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:56:04,440 INFO L85 PathProgramCache]: Analyzing trace with hash -231322215, now seen corresponding path program 1 times [2022-07-19 21:56:04,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:56:04,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422002495] [2022-07-19 21:56:04,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:56:04,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:56:04,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:05,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:56:05,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:05,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:56:05,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:05,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:56:05,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:05,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:56:05,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:05,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:56:05,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:05,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:56:05,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:05,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 21:56:05,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:05,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 21:56:05,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:05,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 21:56:05,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:05,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 21:56:05,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:05,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 21:56:05,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:05,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 21:56:05,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:05,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 21:56:05,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:05,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 21:56:05,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:05,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-19 21:56:05,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:05,542 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 21 proven. 23 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-07-19 21:56:05,542 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:56:05,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422002495] [2022-07-19 21:56:05,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422002495] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:56:05,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [448994578] [2022-07-19 21:56:05,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:56:05,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:56:05,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:56:05,552 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:56:05,554 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-19 21:56:05,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:05,976 INFO L263 TraceCheckSpWp]: Trace formula consists of 2729 conjuncts, 88 conjunts are in the unsatisfiable core [2022-07-19 21:56:05,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:56:06,065 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 21:56:12,889 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:56:12,890 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:56:12,903 INFO L356 Elim1Store]: treesize reduction 25, result has 43.2 percent of original size [2022-07-19 21:56:12,904 INFO L390 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 2 case distinctions, treesize of input 41 treesize of output 49 [2022-07-19 21:56:17,406 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 91 proven. 29 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-19 21:56:17,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:56:22,324 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [448994578] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:56:22,324 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 21:56:22,324 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 27] total 46 [2022-07-19 21:56:22,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135976175] [2022-07-19 21:56:22,324 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 21:56:22,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-07-19 21:56:22,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:56:22,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-07-19 21:56:22,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=257, Invalid=3047, Unknown=2, NotChecked=0, Total=3306 [2022-07-19 21:56:22,326 INFO L87 Difference]: Start difference. First operand 584 states and 711 transitions. Second operand has 46 states, 45 states have (on average 3.6444444444444444) internal successors, (164), 40 states have internal predecessors, (164), 19 states have call successors, (33), 8 states have call predecessors, (33), 9 states have return successors, (30), 17 states have call predecessors, (30), 18 states have call successors, (30) [2022-07-19 21:56:28,217 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:56:28,217 INFO L93 Difference]: Finished difference Result 976 states and 1214 transitions. [2022-07-19 21:56:28,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 59 states. [2022-07-19 21:56:28,218 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 45 states have (on average 3.6444444444444444) internal successors, (164), 40 states have internal predecessors, (164), 19 states have call successors, (33), 8 states have call predecessors, (33), 9 states have return successors, (30), 17 states have call predecessors, (30), 18 states have call successors, (30) Word has length 141 [2022-07-19 21:56:28,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:56:28,221 INFO L225 Difference]: With dead ends: 976 [2022-07-19 21:56:28,221 INFO L226 Difference]: Without dead ends: 805 [2022-07-19 21:56:28,223 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 211 SyntacticMatches, 17 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3581 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=850, Invalid=9450, Unknown=2, NotChecked=0, Total=10302 [2022-07-19 21:56:28,224 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 371 mSDsluCounter, 1849 mSDsCounter, 0 mSdLazyCounter, 4274 mSolverCounterSat, 291 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 2128 SdHoareTripleChecker+Invalid, 7271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 291 IncrementalHoareTripleChecker+Valid, 4274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2706 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-19 21:56:28,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 2128 Invalid, 7271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [291 Valid, 4274 Invalid, 0 Unknown, 2706 Unchecked, 3.4s Time] [2022-07-19 21:56:28,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 805 states. [2022-07-19 21:56:28,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 805 to 693. [2022-07-19 21:56:28,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 502 states have (on average 1.0677290836653386) internal successors, (536), 510 states have internal predecessors, (536), 125 states have call successors, (125), 57 states have call predecessors, (125), 65 states have return successors, (158), 125 states have call predecessors, (158), 124 states have call successors, (158) [2022-07-19 21:56:28,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 819 transitions. [2022-07-19 21:56:28,267 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 819 transitions. Word has length 141 [2022-07-19 21:56:28,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:56:28,267 INFO L495 AbstractCegarLoop]: Abstraction has 693 states and 819 transitions. [2022-07-19 21:56:28,267 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 45 states have (on average 3.6444444444444444) internal successors, (164), 40 states have internal predecessors, (164), 19 states have call successors, (33), 8 states have call predecessors, (33), 9 states have return successors, (30), 17 states have call predecessors, (30), 18 states have call successors, (30) [2022-07-19 21:56:28,267 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 819 transitions. [2022-07-19 21:56:28,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-19 21:56:28,269 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:56:28,269 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-19 21:56:28,303 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-19 21:56:28,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:56:28,484 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:56:28,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:56:28,485 INFO L85 PathProgramCache]: Analyzing trace with hash -1490074470, now seen corresponding path program 1 times [2022-07-19 21:56:28,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:56:28,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39564861] [2022-07-19 21:56:28,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:56:28,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:56:28,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:28,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:56:28,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:28,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:56:28,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:28,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:56:28,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:28,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:56:28,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:28,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:56:28,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:28,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:56:28,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:28,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 21:56:28,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:28,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 21:56:28,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:28,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 21:56:28,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:28,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 21:56:28,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:28,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 21:56:28,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:28,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 21:56:28,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:28,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 21:56:28,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:28,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 21:56:28,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:28,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-19 21:56:28,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:28,684 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-07-19 21:56:28,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:56:28,685 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39564861] [2022-07-19 21:56:28,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39564861] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:56:28,685 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:56:28,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:56:28,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034943927] [2022-07-19 21:56:28,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:56:28,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:56:28,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:56:28,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:56:28,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:56:28,686 INFO L87 Difference]: Start difference. First operand 693 states and 819 transitions. Second operand has 11 states, 10 states have (on average 5.9) internal successors, (59), 8 states have internal predecessors, (59), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-19 21:56:29,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:56:29,409 INFO L93 Difference]: Finished difference Result 717 states and 848 transitions. [2022-07-19 21:56:29,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 21:56:29,409 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.9) internal successors, (59), 8 states have internal predecessors, (59), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 143 [2022-07-19 21:56:29,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:56:29,411 INFO L225 Difference]: With dead ends: 717 [2022-07-19 21:56:29,412 INFO L226 Difference]: Without dead ends: 715 [2022-07-19 21:56:29,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-07-19 21:56:29,412 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 118 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 1329 mSolverCounterSat, 60 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 146 SdHoareTripleChecker+Valid, 673 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 60 IncrementalHoareTripleChecker+Valid, 1329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 21:56:29,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [146 Valid, 673 Invalid, 1389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [60 Valid, 1329 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 21:56:29,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 715 states. [2022-07-19 21:56:29,472 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 715 to 692. [2022-07-19 21:56:29,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 692 states, 504 states have (on average 1.0674603174603174) internal successors, (538), 512 states have internal predecessors, (538), 122 states have call successors, (122), 57 states have call predecessors, (122), 65 states have return successors, (155), 122 states have call predecessors, (155), 121 states have call successors, (155) [2022-07-19 21:56:29,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 692 states to 692 states and 815 transitions. [2022-07-19 21:56:29,474 INFO L78 Accepts]: Start accepts. Automaton has 692 states and 815 transitions. Word has length 143 [2022-07-19 21:56:29,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:56:29,474 INFO L495 AbstractCegarLoop]: Abstraction has 692 states and 815 transitions. [2022-07-19 21:56:29,474 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.9) internal successors, (59), 8 states have internal predecessors, (59), 2 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-19 21:56:29,474 INFO L276 IsEmpty]: Start isEmpty. Operand 692 states and 815 transitions. [2022-07-19 21:56:29,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 144 [2022-07-19 21:56:29,476 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:56:29,476 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-19 21:56:29,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2022-07-19 21:56:29,476 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:56:29,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:56:29,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1595812768, now seen corresponding path program 1 times [2022-07-19 21:56:29,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:56:29,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [651593351] [2022-07-19 21:56:29,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:56:29,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:56:29,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:29,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:56:29,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:29,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:56:29,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:29,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:56:29,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:29,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:56:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:29,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:56:29,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:29,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:56:29,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:29,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 21:56:29,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:29,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 21:56:29,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:29,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 21:56:29,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:29,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 21:56:29,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:29,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 21:56:29,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:29,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 21:56:29,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:29,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 21:56:29,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:29,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 21:56:29,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:29,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-19 21:56:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:30,015 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-07-19 21:56:30,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:56:30,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [651593351] [2022-07-19 21:56:30,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [651593351] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:56:30,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:56:30,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-07-19 21:56:30,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981895441] [2022-07-19 21:56:30,016 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:56:30,016 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-19 21:56:30,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:56:30,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-19 21:56:30,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=455, Unknown=0, NotChecked=0, Total=506 [2022-07-19 21:56:30,017 INFO L87 Difference]: Start difference. First operand 692 states and 815 transitions. Second operand has 23 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 18 states have internal predecessors, (69), 9 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 10 states have call predecessors, (15), 8 states have call successors, (15) [2022-07-19 21:56:31,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:56:31,705 INFO L93 Difference]: Finished difference Result 735 states and 873 transitions. [2022-07-19 21:56:31,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 21:56:31,706 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 18 states have internal predecessors, (69), 9 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 10 states have call predecessors, (15), 8 states have call successors, (15) Word has length 143 [2022-07-19 21:56:31,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:56:31,709 INFO L225 Difference]: With dead ends: 735 [2022-07-19 21:56:31,709 INFO L226 Difference]: Without dead ends: 733 [2022-07-19 21:56:31,709 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=1236, Unknown=0, NotChecked=0, Total=1406 [2022-07-19 21:56:31,710 INFO L413 NwaCegarLoop]: 138 mSDtfsCounter, 283 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 3160 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 501 SdHoareTripleChecker+Invalid, 3418 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 3160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-19 21:56:31,710 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 501 Invalid, 3418 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 3160 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-07-19 21:56:31,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 733 states. [2022-07-19 21:56:31,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 733 to 693. [2022-07-19 21:56:31,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 693 states, 507 states have (on average 1.0670611439842208) internal successors, (541), 515 states have internal predecessors, (541), 119 states have call successors, (119), 59 states have call predecessors, (119), 66 states have return successors, (150), 118 states have call predecessors, (150), 118 states have call successors, (150) [2022-07-19 21:56:31,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 810 transitions. [2022-07-19 21:56:31,750 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 810 transitions. Word has length 143 [2022-07-19 21:56:31,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:56:31,750 INFO L495 AbstractCegarLoop]: Abstraction has 693 states and 810 transitions. [2022-07-19 21:56:31,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 18 states have internal predecessors, (69), 9 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (15), 10 states have call predecessors, (15), 8 states have call successors, (15) [2022-07-19 21:56:31,751 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 810 transitions. [2022-07-19 21:56:31,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-19 21:56:31,752 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:56:31,752 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:56:31,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-19 21:56:31,753 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:56:31,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:56:31,753 INFO L85 PathProgramCache]: Analyzing trace with hash -1498238687, now seen corresponding path program 1 times [2022-07-19 21:56:31,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:56:31,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609861009] [2022-07-19 21:56:31,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:56:31,754 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:56:31,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:31,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:56:31,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:31,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:56:31,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:31,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:56:31,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:31,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:56:31,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:31,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:56:31,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:31,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:56:31,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:31,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 21:56:31,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:31,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 21:56:31,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:31,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 21:56:31,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:31,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 21:56:31,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:31,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 21:56:31,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:31,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-19 21:56:31,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:31,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-19 21:56:31,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:31,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 21:56:31,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:31,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-19 21:56:31,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:31,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-19 21:56:31,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:31,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-19 21:56:31,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:31,929 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-07-19 21:56:31,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:56:31,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609861009] [2022-07-19 21:56:31,929 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609861009] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:56:31,929 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:56:31,930 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:56:31,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039453877] [2022-07-19 21:56:31,930 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:56:31,930 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:56:31,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:56:31,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:56:31,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:56:31,933 INFO L87 Difference]: Start difference. First operand 693 states and 810 transitions. Second operand has 9 states, 8 states have (on average 8.0) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-19 21:56:32,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:56:32,472 INFO L93 Difference]: Finished difference Result 709 states and 826 transitions. [2022-07-19 21:56:32,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:56:32,473 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) Word has length 151 [2022-07-19 21:56:32,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:56:32,475 INFO L225 Difference]: With dead ends: 709 [2022-07-19 21:56:32,475 INFO L226 Difference]: Without dead ends: 707 [2022-07-19 21:56:32,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-07-19 21:56:32,476 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 105 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 1010 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 558 SdHoareTripleChecker+Invalid, 1064 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 1010 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 21:56:32,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 558 Invalid, 1064 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 1010 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 21:56:32,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2022-07-19 21:56:32,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 702. [2022-07-19 21:56:32,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 702 states, 513 states have (on average 1.0662768031189085) internal successors, (547), 522 states have internal predecessors, (547), 120 states have call successors, (120), 60 states have call predecessors, (120), 68 states have return successors, (152), 119 states have call predecessors, (152), 119 states have call successors, (152) [2022-07-19 21:56:32,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 702 states to 702 states and 819 transitions. [2022-07-19 21:56:32,524 INFO L78 Accepts]: Start accepts. Automaton has 702 states and 819 transitions. Word has length 151 [2022-07-19 21:56:32,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:56:32,524 INFO L495 AbstractCegarLoop]: Abstraction has 702 states and 819 transitions. [2022-07-19 21:56:32,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 6 states have internal predecessors, (64), 2 states have call successors, (19), 3 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 1 states have call successors, (17) [2022-07-19 21:56:32,524 INFO L276 IsEmpty]: Start isEmpty. Operand 702 states and 819 transitions. [2022-07-19 21:56:32,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-19 21:56:32,526 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:56:32,526 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:56:32,526 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-19 21:56:32,526 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:56:32,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:56:32,527 INFO L85 PathProgramCache]: Analyzing trace with hash -2074991277, now seen corresponding path program 1 times [2022-07-19 21:56:32,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:56:32,527 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056142481] [2022-07-19 21:56:32,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:56:32,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:56:32,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:32,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:56:32,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:32,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:56:32,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:32,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:56:32,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:32,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:56:32,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:32,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:56:32,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:32,972 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:56:32,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:32,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 21:56:32,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:32,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 21:56:32,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:32,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 21:56:32,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:32,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:56:32,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:32,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 21:56:33,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:33,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 21:56:33,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:33,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 21:56:33,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:33,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-19 21:56:33,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:33,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-19 21:56:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:33,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-19 21:56:33,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:33,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-19 21:56:33,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:33,226 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 2 proven. 21 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2022-07-19 21:56:33,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:56:33,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056142481] [2022-07-19 21:56:33,227 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056142481] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:56:33,227 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870716320] [2022-07-19 21:56:33,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:56:33,228 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:56:33,228 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:56:33,229 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:56:33,230 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-19 21:56:33,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:33,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 2784 conjuncts, 65 conjunts are in the unsatisfiable core [2022-07-19 21:56:33,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:56:34,220 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 21:56:34,221 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 30 [2022-07-19 21:56:34,223 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-07-19 21:56:34,756 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 112 proven. 6 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-19 21:56:34,757 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:56:35,192 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870716320] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:56:35,192 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 21:56:35,192 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 19] total 35 [2022-07-19 21:56:35,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [255146154] [2022-07-19 21:56:35,192 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 21:56:35,193 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-07-19 21:56:35,193 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:56:35,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-07-19 21:56:35,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1401, Unknown=7, NotChecked=0, Total=1560 [2022-07-19 21:56:35,194 INFO L87 Difference]: Start difference. First operand 702 states and 819 transitions. Second operand has 35 states, 32 states have (on average 4.625) internal successors, (148), 32 states have internal predecessors, (148), 16 states have call successors, (33), 6 states have call predecessors, (33), 7 states have return successors, (30), 11 states have call predecessors, (30), 16 states have call successors, (30) [2022-07-19 21:56:38,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:56:38,934 INFO L93 Difference]: Finished difference Result 1138 states and 1389 transitions. [2022-07-19 21:56:38,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-19 21:56:38,934 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 32 states have (on average 4.625) internal successors, (148), 32 states have internal predecessors, (148), 16 states have call successors, (33), 6 states have call predecessors, (33), 7 states have return successors, (30), 11 states have call predecessors, (30), 16 states have call successors, (30) Word has length 154 [2022-07-19 21:56:38,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:56:38,937 INFO L225 Difference]: With dead ends: 1138 [2022-07-19 21:56:38,937 INFO L226 Difference]: Without dead ends: 802 [2022-07-19 21:56:38,939 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 250 SyntacticMatches, 17 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1179 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=391, Invalid=3508, Unknown=7, NotChecked=0, Total=3906 [2022-07-19 21:56:38,939 INFO L413 NwaCegarLoop]: 268 mSDtfsCounter, 377 mSDsluCounter, 1001 mSDsCounter, 0 mSdLazyCounter, 5628 mSolverCounterSat, 252 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 434 SdHoareTripleChecker+Valid, 1269 SdHoareTripleChecker+Invalid, 6860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 252 IncrementalHoareTripleChecker+Valid, 5628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 980 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-19 21:56:38,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [434 Valid, 1269 Invalid, 6860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [252 Valid, 5628 Invalid, 0 Unknown, 980 Unchecked, 2.9s Time] [2022-07-19 21:56:38,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 802 states. [2022-07-19 21:56:38,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 802 to 718. [2022-07-19 21:56:38,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 718 states, 518 states have (on average 1.0617760617760619) internal successors, (550), 524 states have internal predecessors, (550), 130 states have call successors, (130), 63 states have call predecessors, (130), 69 states have return successors, (162), 130 states have call predecessors, (162), 129 states have call successors, (162) [2022-07-19 21:56:38,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 718 states to 718 states and 842 transitions. [2022-07-19 21:56:38,993 INFO L78 Accepts]: Start accepts. Automaton has 718 states and 842 transitions. Word has length 154 [2022-07-19 21:56:38,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:56:38,993 INFO L495 AbstractCegarLoop]: Abstraction has 718 states and 842 transitions. [2022-07-19 21:56:38,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 32 states have (on average 4.625) internal successors, (148), 32 states have internal predecessors, (148), 16 states have call successors, (33), 6 states have call predecessors, (33), 7 states have return successors, (30), 11 states have call predecessors, (30), 16 states have call successors, (30) [2022-07-19 21:56:38,993 INFO L276 IsEmpty]: Start isEmpty. Operand 718 states and 842 transitions. [2022-07-19 21:56:38,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-19 21:56:38,995 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:56:38,995 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 21:56:39,033 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-19 21:56:39,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:56:39,212 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:56:39,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:56:39,212 INFO L85 PathProgramCache]: Analyzing trace with hash -1742348139, now seen corresponding path program 1 times [2022-07-19 21:56:39,213 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:56:39,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470312364] [2022-07-19 21:56:39,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:56:39,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:56:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:39,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:56:39,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:39,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:56:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:39,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:56:39,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:39,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:56:39,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:39,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:56:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:39,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:56:39,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:39,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 21:56:39,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:39,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 21:56:39,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:39,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 21:56:39,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:39,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:56:39,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:39,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 21:56:39,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:39,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 21:56:39,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:39,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 21:56:39,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:39,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-19 21:56:39,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:39,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-19 21:56:39,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:39,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-19 21:56:39,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:39,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-19 21:56:39,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:39,898 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 146 trivial. 0 not checked. [2022-07-19 21:56:39,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:56:39,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470312364] [2022-07-19 21:56:39,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470312364] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:56:39,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1668465702] [2022-07-19 21:56:39,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:56:39,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:56:39,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:56:39,916 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) [2022-07-19 21:56:39,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-19 21:56:40,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:56:40,348 INFO L263 TraceCheckSpWp]: Trace formula consists of 2779 conjuncts, 70 conjunts are in the unsatisfiable core [2022-07-19 21:56:40,352 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:56:40,430 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 21:56:53,099 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-07-19 21:56:53,099 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 23 [2022-07-19 21:57:07,519 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 8 [2022-07-19 21:57:07,554 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 56 proven. 23 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-19 21:57:07,554 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:57:11,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1668465702] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:57:11,838 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 21:57:11,838 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 27] total 37 [2022-07-19 21:57:11,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1293300836] [2022-07-19 21:57:11,838 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 21:57:11,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-07-19 21:57:11,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:57:11,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-07-19 21:57:11,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=1799, Unknown=4, NotChecked=0, Total=1980 [2022-07-19 21:57:11,840 INFO L87 Difference]: Start difference. First operand 718 states and 842 transitions. Second operand has 37 states, 35 states have (on average 3.8285714285714287) internal successors, (134), 30 states have internal predecessors, (134), 17 states have call successors, (35), 5 states have call predecessors, (35), 7 states have return successors, (33), 18 states have call predecessors, (33), 16 states have call successors, (33) [2022-07-19 21:57:15,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:57:15,688 INFO L93 Difference]: Finished difference Result 764 states and 888 transitions. [2022-07-19 21:57:15,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2022-07-19 21:57:15,689 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 35 states have (on average 3.8285714285714287) internal successors, (134), 30 states have internal predecessors, (134), 17 states have call successors, (35), 5 states have call predecessors, (35), 7 states have return successors, (33), 18 states have call predecessors, (33), 16 states have call successors, (33) Word has length 154 [2022-07-19 21:57:15,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:57:15,691 INFO L225 Difference]: With dead ends: 764 [2022-07-19 21:57:15,691 INFO L226 Difference]: Without dead ends: 757 [2022-07-19 21:57:15,693 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 311 GetRequests, 221 SyntacticMatches, 25 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1453 ImplicationChecksByTransitivity, 33.8s TimeCoverageRelationStatistics Valid=404, Invalid=4014, Unknown=4, NotChecked=0, Total=4422 [2022-07-19 21:57:15,693 INFO L413 NwaCegarLoop]: 188 mSDtfsCounter, 257 mSDsluCounter, 1019 mSDsCounter, 0 mSdLazyCounter, 2740 mSolverCounterSat, 202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 281 SdHoareTripleChecker+Valid, 1207 SdHoareTripleChecker+Invalid, 4438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 202 IncrementalHoareTripleChecker+Valid, 2740 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1496 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 21:57:15,693 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [281 Valid, 1207 Invalid, 4438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [202 Valid, 2740 Invalid, 0 Unknown, 1496 Unchecked, 1.2s Time] [2022-07-19 21:57:15,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2022-07-19 21:57:15,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 741. [2022-07-19 21:57:15,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 741 states, 540 states have (on average 1.0648148148148149) internal successors, (575), 548 states have internal predecessors, (575), 128 states have call successors, (128), 65 states have call predecessors, (128), 72 states have return successors, (156), 127 states have call predecessors, (156), 127 states have call successors, (156) [2022-07-19 21:57:15,774 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 741 states to 741 states and 859 transitions. [2022-07-19 21:57:15,774 INFO L78 Accepts]: Start accepts. Automaton has 741 states and 859 transitions. Word has length 154 [2022-07-19 21:57:15,774 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:57:15,775 INFO L495 AbstractCegarLoop]: Abstraction has 741 states and 859 transitions. [2022-07-19 21:57:15,775 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 35 states have (on average 3.8285714285714287) internal successors, (134), 30 states have internal predecessors, (134), 17 states have call successors, (35), 5 states have call predecessors, (35), 7 states have return successors, (33), 18 states have call predecessors, (33), 16 states have call successors, (33) [2022-07-19 21:57:15,775 INFO L276 IsEmpty]: Start isEmpty. Operand 741 states and 859 transitions. [2022-07-19 21:57:15,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-07-19 21:57:15,776 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:57:15,777 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 21:57:15,823 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2022-07-19 21:57:15,997 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:57:15,998 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:57:15,998 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:57:15,998 INFO L85 PathProgramCache]: Analyzing trace with hash -1333260736, now seen corresponding path program 1 times [2022-07-19 21:57:15,998 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:57:15,999 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [39122413] [2022-07-19 21:57:15,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:57:15,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:57:16,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:16,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:57:16,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:16,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:57:16,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:16,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:57:16,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:16,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:57:16,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:16,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:57:16,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:16,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:57:16,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:16,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 21:57:16,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:16,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 21:57:16,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:16,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 21:57:16,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:16,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:57:16,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:16,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 21:57:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:16,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 21:57:16,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:16,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 21:57:16,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:16,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-19 21:57:16,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:16,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-19 21:57:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:16,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-19 21:57:16,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:16,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-19 21:57:16,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:16,189 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-07-19 21:57:16,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:57:16,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [39122413] [2022-07-19 21:57:16,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [39122413] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:57:16,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:57:16,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:57:16,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684975125] [2022-07-19 21:57:16,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:57:16,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:57:16,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:57:16,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:57:16,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:57:16,192 INFO L87 Difference]: Start difference. First operand 741 states and 859 transitions. Second operand has 9 states, 8 states have (on average 8.125) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-19 21:57:16,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:57:16,780 INFO L93 Difference]: Finished difference Result 755 states and 876 transitions. [2022-07-19 21:57:16,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:57:16,781 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 159 [2022-07-19 21:57:16,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:57:16,783 INFO L225 Difference]: With dead ends: 755 [2022-07-19 21:57:16,783 INFO L226 Difference]: Without dead ends: 753 [2022-07-19 21:57:16,784 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-07-19 21:57:16,784 INFO L413 NwaCegarLoop]: 191 mSDtfsCounter, 111 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 1068 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 21:57:16,784 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 561 Invalid, 1068 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 1017 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 21:57:16,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2022-07-19 21:57:16,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 751. [2022-07-19 21:57:16,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 751 states, 546 states have (on average 1.064102564102564) internal successors, (581), 555 states have internal predecessors, (581), 130 states have call successors, (130), 66 states have call predecessors, (130), 74 states have return successors, (161), 129 states have call predecessors, (161), 129 states have call successors, (161) [2022-07-19 21:57:16,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 751 states to 751 states and 872 transitions. [2022-07-19 21:57:16,834 INFO L78 Accepts]: Start accepts. Automaton has 751 states and 872 transitions. Word has length 159 [2022-07-19 21:57:16,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:57:16,835 INFO L495 AbstractCegarLoop]: Abstraction has 751 states and 872 transitions. [2022-07-19 21:57:16,835 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.125) internal successors, (65), 6 states have internal predecessors, (65), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-19 21:57:16,835 INFO L276 IsEmpty]: Start isEmpty. Operand 751 states and 872 transitions. [2022-07-19 21:57:16,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 162 [2022-07-19 21:57:16,837 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:57:16,837 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-19 21:57:16,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2022-07-19 21:57:16,837 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:57:16,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:57:16,837 INFO L85 PathProgramCache]: Analyzing trace with hash 2094985493, now seen corresponding path program 1 times [2022-07-19 21:57:16,838 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:57:16,838 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [569362462] [2022-07-19 21:57:16,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:57:16,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:57:17,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:17,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:57:17,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:17,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:57:17,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:17,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:57:17,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:17,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:57:17,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:17,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:57:17,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:17,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:57:17,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:17,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 21:57:17,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:17,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 21:57:17,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:17,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 21:57:17,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:17,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 21:57:17,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:17,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 21:57:17,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:17,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:57:17,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:17,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 21:57:17,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:17,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-19 21:57:17,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:17,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 21:57:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:17,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 21:57:17,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:17,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 21:57:17,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:17,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 21:57:17,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:17,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 21:57:17,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:17,635 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 4 proven. 32 refuted. 0 times theorem prover too weak. 119 trivial. 0 not checked. [2022-07-19 21:57:17,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:57:17,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [569362462] [2022-07-19 21:57:17,636 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [569362462] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:57:17,636 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [562876747] [2022-07-19 21:57:17,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:57:17,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:57:17,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:57:17,637 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) [2022-07-19 21:57:17,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-19 21:57:18,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:18,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 2771 conjuncts, 69 conjunts are in the unsatisfiable core [2022-07-19 21:57:18,111 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:57:18,230 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 21:57:18,664 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 21:57:18,664 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-07-19 21:57:18,667 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-07-19 21:57:27,914 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 67 proven. 60 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-19 21:57:27,914 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:57:28,760 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-19 21:57:28,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [562876747] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:57:28,761 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:57:28,761 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24, 12] total 56 [2022-07-19 21:57:28,761 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1919189251] [2022-07-19 21:57:28,761 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:57:28,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 56 states [2022-07-19 21:57:28,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:57:28,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 56 interpolants. [2022-07-19 21:57:28,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=2872, Unknown=1, NotChecked=0, Total=3080 [2022-07-19 21:57:28,763 INFO L87 Difference]: Start difference. First operand 751 states and 872 transitions. Second operand has 56 states, 53 states have (on average 4.0754716981132075) internal successors, (216), 50 states have internal predecessors, (216), 19 states have call successors, (54), 8 states have call predecessors, (54), 12 states have return successors, (52), 16 states have call predecessors, (52), 18 states have call successors, (52) [2022-07-19 21:57:41,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:57:41,274 INFO L93 Difference]: Finished difference Result 1172 states and 1459 transitions. [2022-07-19 21:57:41,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2022-07-19 21:57:41,275 INFO L78 Accepts]: Start accepts. Automaton has has 56 states, 53 states have (on average 4.0754716981132075) internal successors, (216), 50 states have internal predecessors, (216), 19 states have call successors, (54), 8 states have call predecessors, (54), 12 states have return successors, (52), 16 states have call predecessors, (52), 18 states have call successors, (52) Word has length 161 [2022-07-19 21:57:41,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:57:41,278 INFO L225 Difference]: With dead ends: 1172 [2022-07-19 21:57:41,278 INFO L226 Difference]: Without dead ends: 939 [2022-07-19 21:57:41,281 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 471 GetRequests, 331 SyntacticMatches, 17 SemanticMatches, 123 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4438 ImplicationChecksByTransitivity, 15.3s TimeCoverageRelationStatistics Valid=1120, Invalid=14378, Unknown=2, NotChecked=0, Total=15500 [2022-07-19 21:57:41,281 INFO L413 NwaCegarLoop]: 256 mSDtfsCounter, 642 mSDsluCounter, 1817 mSDsCounter, 0 mSdLazyCounter, 10601 mSolverCounterSat, 568 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 2073 SdHoareTripleChecker+Invalid, 12950 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 568 IncrementalHoareTripleChecker+Valid, 10601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1781 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-07-19 21:57:41,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 2073 Invalid, 12950 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [568 Valid, 10601 Invalid, 0 Unknown, 1781 Unchecked, 7.1s Time] [2022-07-19 21:57:41,282 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2022-07-19 21:57:41,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 779. [2022-07-19 21:57:41,364 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 567 states have (on average 1.0617283950617284) internal successors, (602), 576 states have internal predecessors, (602), 133 states have call successors, (133), 69 states have call predecessors, (133), 78 states have return successors, (165), 133 states have call predecessors, (165), 132 states have call successors, (165) [2022-07-19 21:57:41,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 900 transitions. [2022-07-19 21:57:41,365 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 900 transitions. Word has length 161 [2022-07-19 21:57:41,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:57:41,366 INFO L495 AbstractCegarLoop]: Abstraction has 779 states and 900 transitions. [2022-07-19 21:57:41,366 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 56 states, 53 states have (on average 4.0754716981132075) internal successors, (216), 50 states have internal predecessors, (216), 19 states have call successors, (54), 8 states have call predecessors, (54), 12 states have return successors, (52), 16 states have call predecessors, (52), 18 states have call successors, (52) [2022-07-19 21:57:41,366 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 900 transitions. [2022-07-19 21:57:41,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-19 21:57:41,368 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:57:41,368 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 21:57:41,389 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-07-19 21:57:41,585 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:57:41,585 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:57:41,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:57:41,586 INFO L85 PathProgramCache]: Analyzing trace with hash 1255628742, now seen corresponding path program 1 times [2022-07-19 21:57:41,586 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:57:41,586 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [705474193] [2022-07-19 21:57:41,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:57:41,586 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:57:42,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:42,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:57:42,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:42,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:57:42,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:42,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:57:42,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:42,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:57:42,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:42,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:57:42,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:42,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:57:42,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:42,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 21:57:42,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:42,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 21:57:42,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:42,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 21:57:42,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:42,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:57:42,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:42,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 21:57:42,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:42,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 21:57:42,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:42,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 21:57:42,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:42,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-19 21:57:42,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:42,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-19 21:57:42,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:42,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-19 21:57:42,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:42,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-19 21:57:42,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:42,590 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 14 proven. 33 refuted. 0 times theorem prover too weak. 133 trivial. 0 not checked. [2022-07-19 21:57:42,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:57:42,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [705474193] [2022-07-19 21:57:42,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [705474193] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:57:42,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933803941] [2022-07-19 21:57:42,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:57:42,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:57:42,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:57:42,592 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) [2022-07-19 21:57:42,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-19 21:57:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:57:43,109 INFO L263 TraceCheckSpWp]: Trace formula consists of 2800 conjuncts, 80 conjunts are in the unsatisfiable core [2022-07-19 21:57:43,113 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:57:43,191 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 21:57:51,814 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 21:57:51,814 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 30 [2022-07-19 21:58:05,562 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 75 proven. 76 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-19 21:58:05,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:58:06,737 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933803941] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:58:06,738 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 21:58:06,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 26] total 43 [2022-07-19 21:58:06,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [748127277] [2022-07-19 21:58:06,739 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 21:58:06,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-07-19 21:58:06,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:58:06,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-07-19 21:58:06,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=2843, Unknown=7, NotChecked=0, Total=3080 [2022-07-19 21:58:06,741 INFO L87 Difference]: Start difference. First operand 779 states and 900 transitions. Second operand has 43 states, 42 states have (on average 4.571428571428571) internal successors, (192), 39 states have internal predecessors, (192), 19 states have call successors, (36), 7 states have call predecessors, (36), 9 states have return successors, (33), 17 states have call predecessors, (33), 18 states have call successors, (33) [2022-07-19 21:58:14,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:58:14,004 INFO L93 Difference]: Finished difference Result 1037 states and 1215 transitions. [2022-07-19 21:58:14,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-07-19 21:58:14,005 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 42 states have (on average 4.571428571428571) internal successors, (192), 39 states have internal predecessors, (192), 19 states have call successors, (36), 7 states have call predecessors, (36), 9 states have return successors, (33), 17 states have call predecessors, (33), 18 states have call successors, (33) Word has length 163 [2022-07-19 21:58:14,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:58:14,007 INFO L225 Difference]: With dead ends: 1037 [2022-07-19 21:58:14,008 INFO L226 Difference]: Without dead ends: 860 [2022-07-19 21:58:14,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 247 SyntacticMatches, 19 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2746 ImplicationChecksByTransitivity, 28.3s TimeCoverageRelationStatistics Valid=566, Invalid=7798, Unknown=8, NotChecked=0, Total=8372 [2022-07-19 21:58:14,010 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 324 mSDsluCounter, 1120 mSDsCounter, 0 mSdLazyCounter, 3046 mSolverCounterSat, 116 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 357 SdHoareTripleChecker+Valid, 1345 SdHoareTripleChecker+Invalid, 4690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 116 IncrementalHoareTripleChecker+Valid, 3046 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1528 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-19 21:58:14,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [357 Valid, 1345 Invalid, 4690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [116 Valid, 3046 Invalid, 0 Unknown, 1528 Unchecked, 1.7s Time] [2022-07-19 21:58:14,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2022-07-19 21:58:14,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 813. [2022-07-19 21:58:14,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 813 states, 597 states have (on average 1.0569514237855946) internal successors, (631), 606 states have internal predecessors, (631), 133 states have call successors, (133), 73 states have call predecessors, (133), 82 states have return successors, (162), 133 states have call predecessors, (162), 132 states have call successors, (162) [2022-07-19 21:58:14,112 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 813 states to 813 states and 926 transitions. [2022-07-19 21:58:14,113 INFO L78 Accepts]: Start accepts. Automaton has 813 states and 926 transitions. Word has length 163 [2022-07-19 21:58:14,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:58:14,113 INFO L495 AbstractCegarLoop]: Abstraction has 813 states and 926 transitions. [2022-07-19 21:58:14,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 42 states have (on average 4.571428571428571) internal successors, (192), 39 states have internal predecessors, (192), 19 states have call successors, (36), 7 states have call predecessors, (36), 9 states have return successors, (33), 17 states have call predecessors, (33), 18 states have call successors, (33) [2022-07-19 21:58:14,113 INFO L276 IsEmpty]: Start isEmpty. Operand 813 states and 926 transitions. [2022-07-19 21:58:14,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 164 [2022-07-19 21:58:14,115 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:58:14,115 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 21:58:14,136 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-07-19 21:58:14,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:58:14,331 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:58:14,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:58:14,332 INFO L85 PathProgramCache]: Analyzing trace with hash -24234936, now seen corresponding path program 1 times [2022-07-19 21:58:14,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:58:14,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030486897] [2022-07-19 21:58:14,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:58:14,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:58:14,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:14,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:58:14,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:14,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:58:14,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:14,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:58:14,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:14,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:58:14,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:14,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:58:14,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:14,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:58:14,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:14,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 21:58:14,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:14,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 21:58:14,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:14,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 21:58:14,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:14,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:58:14,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:14,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 21:58:14,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:14,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 21:58:14,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:14,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 21:58:14,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:14,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-19 21:58:14,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:14,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-19 21:58:14,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:14,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-19 21:58:14,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:14,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-19 21:58:14,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:14,680 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 34 proven. 8 refuted. 0 times theorem prover too weak. 138 trivial. 0 not checked. [2022-07-19 21:58:14,680 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:58:14,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030486897] [2022-07-19 21:58:14,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030486897] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:58:14,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [633359232] [2022-07-19 21:58:14,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:58:14,680 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:58:14,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:58:14,688 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) [2022-07-19 21:58:14,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-07-19 21:58:15,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:15,157 INFO L263 TraceCheckSpWp]: Trace formula consists of 2795 conjuncts, 62 conjunts are in the unsatisfiable core [2022-07-19 21:58:15,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:58:15,163 INFO L390 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 [2022-07-19 21:58:15,302 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-19 21:58:15,302 INFO L390 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 [2022-07-19 21:58:15,579 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-19 21:58:15,579 INFO L390 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 15 treesize of output 15 [2022-07-19 21:58:15,865 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2022-07-19 21:58:16,700 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 42 proven. 84 refuted. 0 times theorem prover too weak. 54 trivial. 0 not checked. [2022-07-19 21:58:16,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:58:16,968 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2215 (Array Int Int))) (let ((.cse0 (select (select (store |c_#memory_int| |c_ULTIMATE.start_ensure_byte_cursor_has_allocated_buffer_member_~cursor#1.base| v_ArrVal_2215) |c_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.base|) |c_ULTIMATE.start_aws_byte_buf_append_harness_~#to~0#1.offset|))) (<= .cse0 (* 18446744073709551616 (div .cse0 18446744073709551616))))) is different from false [2022-07-19 21:58:16,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [633359232] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:58:16,976 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 21:58:16,977 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 21] total 32 [2022-07-19 21:58:16,977 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034657427] [2022-07-19 21:58:16,977 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 21:58:16,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-19 21:58:16,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:58:16,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-19 21:58:16,978 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=1190, Unknown=1, NotChecked=70, Total=1406 [2022-07-19 21:58:16,978 INFO L87 Difference]: Start difference. First operand 813 states and 926 transitions. Second operand has 32 states, 32 states have (on average 5.71875) internal successors, (183), 29 states have internal predecessors, (183), 11 states have call successors, (36), 8 states have call predecessors, (36), 9 states have return successors, (33), 11 states have call predecessors, (33), 10 states have call successors, (33) [2022-07-19 21:58:19,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:58:19,203 INFO L93 Difference]: Finished difference Result 1016 states and 1182 transitions. [2022-07-19 21:58:19,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-07-19 21:58:19,203 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.71875) internal successors, (183), 29 states have internal predecessors, (183), 11 states have call successors, (36), 8 states have call predecessors, (36), 9 states have return successors, (33), 11 states have call predecessors, (33), 10 states have call successors, (33) Word has length 163 [2022-07-19 21:58:19,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:58:19,206 INFO L225 Difference]: With dead ends: 1016 [2022-07-19 21:58:19,206 INFO L226 Difference]: Without dead ends: 879 [2022-07-19 21:58:19,207 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 250 SyntacticMatches, 26 SemanticMatches, 65 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1543 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=439, Invalid=3854, Unknown=1, NotChecked=128, Total=4422 [2022-07-19 21:58:19,208 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 347 mSDsluCounter, 1113 mSDsCounter, 0 mSdLazyCounter, 2207 mSolverCounterSat, 232 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 392 SdHoareTripleChecker+Valid, 1339 SdHoareTripleChecker+Invalid, 4139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 232 IncrementalHoareTripleChecker+Valid, 2207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1700 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-19 21:58:19,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [392 Valid, 1339 Invalid, 4139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [232 Valid, 2207 Invalid, 0 Unknown, 1700 Unchecked, 1.4s Time] [2022-07-19 21:58:19,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 879 states. [2022-07-19 21:58:19,298 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 879 to 830. [2022-07-19 21:58:19,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 830 states, 610 states have (on average 1.0524590163934426) internal successors, (642), 621 states have internal predecessors, (642), 133 states have call successors, (133), 75 states have call predecessors, (133), 86 states have return successors, (162), 133 states have call predecessors, (162), 132 states have call successors, (162) [2022-07-19 21:58:19,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 830 states to 830 states and 937 transitions. [2022-07-19 21:58:19,300 INFO L78 Accepts]: Start accepts. Automaton has 830 states and 937 transitions. Word has length 163 [2022-07-19 21:58:19,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:58:19,301 INFO L495 AbstractCegarLoop]: Abstraction has 830 states and 937 transitions. [2022-07-19 21:58:19,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.71875) internal successors, (183), 29 states have internal predecessors, (183), 11 states have call successors, (36), 8 states have call predecessors, (36), 9 states have return successors, (33), 11 states have call predecessors, (33), 10 states have call successors, (33) [2022-07-19 21:58:19,301 INFO L276 IsEmpty]: Start isEmpty. Operand 830 states and 937 transitions. [2022-07-19 21:58:19,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-07-19 21:58:19,303 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:58:19,303 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:58:19,324 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-07-19 21:58:19,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:58:19,515 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:58:19,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:58:19,516 INFO L85 PathProgramCache]: Analyzing trace with hash -877695663, now seen corresponding path program 1 times [2022-07-19 21:58:19,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:58:19,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767252808] [2022-07-19 21:58:19,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:58:19,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:58:19,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:19,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:58:19,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:19,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:58:19,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:19,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:58:19,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:19,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:58:19,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:19,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:58:19,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:19,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:58:19,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:19,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 21:58:19,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:19,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 21:58:19,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:19,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 21:58:19,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:19,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:58:19,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:19,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 21:58:19,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:19,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 21:58:19,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:19,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 21:58:19,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:19,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-19 21:58:19,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:19,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-19 21:58:19,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:19,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-19 21:58:19,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:19,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-19 21:58:19,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:19,723 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-07-19 21:58:19,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:58:19,724 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767252808] [2022-07-19 21:58:19,724 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [767252808] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:58:19,724 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:58:19,724 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 21:58:19,724 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984126253] [2022-07-19 21:58:19,724 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:58:19,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:58:19,725 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:58:19,725 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:58:19,725 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:58:19,725 INFO L87 Difference]: Start difference. First operand 830 states and 937 transitions. Second operand has 11 states, 10 states have (on average 6.5) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-19 21:58:20,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:58:20,494 INFO L93 Difference]: Finished difference Result 838 states and 945 transitions. [2022-07-19 21:58:20,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 21:58:20,495 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), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 165 [2022-07-19 21:58:20,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:58:20,497 INFO L225 Difference]: With dead ends: 838 [2022-07-19 21:58:20,497 INFO L226 Difference]: Without dead ends: 836 [2022-07-19 21:58:20,498 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-07-19 21:58:20,498 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 118 mSDsluCounter, 486 mSDsCounter, 0 mSdLazyCounter, 1334 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 672 SdHoareTripleChecker+Invalid, 1395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 1334 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 21:58:20,498 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 672 Invalid, 1395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 1334 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 21:58:20,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 836 states. [2022-07-19 21:58:20,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 836 to 835. [2022-07-19 21:58:20,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 835 states, 613 states have (on average 1.0522022838499185) internal successors, (645), 624 states have internal predecessors, (645), 134 states have call successors, (134), 76 states have call predecessors, (134), 87 states have return successors, (163), 134 states have call predecessors, (163), 133 states have call successors, (163) [2022-07-19 21:58:20,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 835 states to 835 states and 942 transitions. [2022-07-19 21:58:20,561 INFO L78 Accepts]: Start accepts. Automaton has 835 states and 942 transitions. Word has length 165 [2022-07-19 21:58:20,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:58:20,561 INFO L495 AbstractCegarLoop]: Abstraction has 835 states and 942 transitions. [2022-07-19 21:58:20,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.5) internal successors, (65), 8 states have internal predecessors, (65), 2 states have call successors, (18), 3 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-19 21:58:20,562 INFO L276 IsEmpty]: Start isEmpty. Operand 835 states and 942 transitions. [2022-07-19 21:58:20,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-07-19 21:58:20,563 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:58:20,563 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:58:20,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2022-07-19 21:58:20,563 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:58:20,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:58:20,564 INFO L85 PathProgramCache]: Analyzing trace with hash -135956335, now seen corresponding path program 1 times [2022-07-19 21:58:20,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:58:20,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063425527] [2022-07-19 21:58:20,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:58:20,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:58:20,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:20,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:58:20,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:20,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:58:20,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:20,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:58:20,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:20,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:58:20,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:20,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:58:20,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:20,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:58:20,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:21,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 21:58:21,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:21,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 21:58:21,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:21,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 21:58:21,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:21,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:58:21,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:21,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 21:58:21,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:21,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 21:58:21,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:21,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 21:58:21,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:21,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-19 21:58:21,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:21,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-19 21:58:21,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:21,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-19 21:58:21,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:21,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-19 21:58:21,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:21,147 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 2 proven. 43 refuted. 0 times theorem prover too weak. 139 trivial. 0 not checked. [2022-07-19 21:58:21,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:58:21,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063425527] [2022-07-19 21:58:21,147 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063425527] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:58:21,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [11163850] [2022-07-19 21:58:21,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:58:21,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:58:21,148 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:58:21,149 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) [2022-07-19 21:58:21,150 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-07-19 21:58:21,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:21,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 2812 conjuncts, 84 conjunts are in the unsatisfiable core [2022-07-19 21:58:21,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:58:22,243 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:58:22,244 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 28 [2022-07-19 21:58:23,166 INFO L356 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2022-07-19 21:58:23,167 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 69 treesize of output 41 [2022-07-19 21:58:23,170 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 158 proven. 6 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-19 21:58:23,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:58:26,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [11163850] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:58:26,127 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 21:58:26,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 36 [2022-07-19 21:58:26,127 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1945255500] [2022-07-19 21:58:26,128 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 21:58:26,130 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-07-19 21:58:26,130 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:58:26,131 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-07-19 21:58:26,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=1639, Unknown=2, NotChecked=0, Total=1806 [2022-07-19 21:58:26,132 INFO L87 Difference]: Start difference. First operand 835 states and 942 transitions. Second operand has 36 states, 34 states have (on average 5.176470588235294) internal successors, (176), 31 states have internal predecessors, (176), 17 states have call successors, (36), 7 states have call predecessors, (36), 9 states have return successors, (33), 15 states have call predecessors, (33), 17 states have call successors, (33) [2022-07-19 21:58:31,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:58:31,363 INFO L93 Difference]: Finished difference Result 1159 states and 1357 transitions. [2022-07-19 21:58:31,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2022-07-19 21:58:31,364 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 5.176470588235294) internal successors, (176), 31 states have internal predecessors, (176), 17 states have call successors, (36), 7 states have call predecessors, (36), 9 states have return successors, (33), 15 states have call predecessors, (33), 17 states have call successors, (33) Word has length 165 [2022-07-19 21:58:31,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:58:31,366 INFO L225 Difference]: With dead ends: 1159 [2022-07-19 21:58:31,367 INFO L226 Difference]: Without dead ends: 922 [2022-07-19 21:58:31,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 351 GetRequests, 269 SyntacticMatches, 14 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1334 ImplicationChecksByTransitivity, 6.8s TimeCoverageRelationStatistics Valid=459, Invalid=4368, Unknown=3, NotChecked=0, Total=4830 [2022-07-19 21:58:31,368 INFO L413 NwaCegarLoop]: 266 mSDtfsCounter, 326 mSDsluCounter, 1399 mSDsCounter, 0 mSdLazyCounter, 4226 mSolverCounterSat, 239 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 376 SdHoareTripleChecker+Valid, 1665 SdHoareTripleChecker+Invalid, 6281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 239 IncrementalHoareTripleChecker+Valid, 4226 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1816 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-07-19 21:58:31,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [376 Valid, 1665 Invalid, 6281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [239 Valid, 4226 Invalid, 0 Unknown, 1816 Unchecked, 2.3s Time] [2022-07-19 21:58:31,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 922 states. [2022-07-19 21:58:31,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 922 to 854. [2022-07-19 21:58:31,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 854 states, 633 states have (on average 1.0552922590837284) internal successors, (668), 643 states have internal predecessors, (668), 133 states have call successors, (133), 77 states have call predecessors, (133), 87 states have return successors, (160), 133 states have call predecessors, (160), 132 states have call successors, (160) [2022-07-19 21:58:31,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 854 states to 854 states and 961 transitions. [2022-07-19 21:58:31,432 INFO L78 Accepts]: Start accepts. Automaton has 854 states and 961 transitions. Word has length 165 [2022-07-19 21:58:31,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:58:31,432 INFO L495 AbstractCegarLoop]: Abstraction has 854 states and 961 transitions. [2022-07-19 21:58:31,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 5.176470588235294) internal successors, (176), 31 states have internal predecessors, (176), 17 states have call successors, (36), 7 states have call predecessors, (36), 9 states have return successors, (33), 15 states have call predecessors, (33), 17 states have call successors, (33) [2022-07-19 21:58:31,432 INFO L276 IsEmpty]: Start isEmpty. Operand 854 states and 961 transitions. [2022-07-19 21:58:31,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2022-07-19 21:58:31,434 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:58:31,434 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:58:31,467 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2022-07-19 21:58:31,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2022-07-19 21:58:31,671 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:58:31,671 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:58:31,671 INFO L85 PathProgramCache]: Analyzing trace with hash -570461933, now seen corresponding path program 1 times [2022-07-19 21:58:31,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:58:31,671 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [657160023] [2022-07-19 21:58:31,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:58:31,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:58:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:32,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:58:32,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:32,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:58:32,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:32,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:58:32,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:32,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:58:32,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:32,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:58:32,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:32,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:58:32,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:32,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 21:58:32,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:32,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 21:58:32,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:32,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 21:58:32,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:32,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:58:32,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:32,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 21:58:32,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:32,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 21:58:32,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:32,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 21:58:32,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:32,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-19 21:58:32,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:32,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-19 21:58:32,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:32,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-19 21:58:32,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:32,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-19 21:58:32,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:32,463 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 32 proven. 4 refuted. 0 times theorem prover too weak. 148 trivial. 0 not checked. [2022-07-19 21:58:32,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:58:32,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [657160023] [2022-07-19 21:58:32,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [657160023] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:58:32,464 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1456055482] [2022-07-19 21:58:32,464 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:58:32,464 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:58:32,464 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:58:32,473 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) [2022-07-19 21:58:32,476 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-07-19 21:58:32,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:58:32,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 2817 conjuncts, 107 conjunts are in the unsatisfiable core [2022-07-19 21:58:32,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:58:32,951 INFO L390 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 [2022-07-19 21:58:33,210 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2022-07-19 21:58:33,265 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:58:33,266 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-07-19 21:58:33,325 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 21:58:33,720 INFO L356 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-07-19 21:58:33,721 INFO L390 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 20 treesize of output 22 [2022-07-19 21:59:06,853 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28