./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 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_clean_up_secure_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 e401a4e4197b43467958a92870f8195ba22195c146137fa78352c627ea2eeb40 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 22:09:17,954 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 22:09:17,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 22:09:17,999 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 22:09:17,999 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 22:09:18,000 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 22:09:18,002 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 22:09:18,005 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 22:09:18,006 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 22:09:18,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 22:09:18,011 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 22:09:18,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 22:09:18,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 22:09:18,015 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 22:09:18,016 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 22:09:18,018 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 22:09:18,019 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 22:09:18,021 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 22:09:18,022 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 22:09:18,027 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 22:09:18,028 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 22:09:18,029 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 22:09:18,030 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 22:09:18,031 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 22:09:18,032 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 22:09:18,038 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 22:09:18,038 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 22:09:18,039 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 22:09:18,039 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 22:09:18,040 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 22:09:18,041 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 22:09:18,041 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 22:09:18,043 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 22:09:18,044 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 22:09:18,045 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 22:09:18,045 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 22:09:18,045 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 22:09:18,046 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 22:09:18,046 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 22:09:18,046 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 22:09:18,047 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 22:09:18,048 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 22:09:18,049 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 22:09:18,076 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 22:09:18,077 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 22:09:18,077 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 22:09:18,077 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 22:09:18,078 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 22:09:18,078 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 22:09:18,078 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 22:09:18,079 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 22:09:18,079 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 22:09:18,080 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 22:09:18,080 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 22:09:18,080 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 22:09:18,080 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 22:09:18,080 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 22:09:18,081 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 22:09:18,081 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 22:09:18,081 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 22:09:18,081 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 22:09:18,081 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 22:09:18,081 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 22:09:18,082 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 22:09:18,082 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:09:18,082 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 22:09:18,082 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 22:09:18,082 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 22:09:18,083 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 22:09:18,083 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 22:09:18,083 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 22:09:18,083 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 22:09:18,083 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 22:09:18,084 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e401a4e4197b43467958a92870f8195ba22195c146137fa78352c627ea2eeb40 [2022-07-22 22:09:18,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 22:09:18,346 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 22:09:18,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 22:09:18,350 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 22:09:18,350 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 22:09:18,351 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i [2022-07-22 22:09:18,411 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cc7ca1be/e19e0e93db9d41b093a498ef85b252fa/FLAG3ae9054e4 [2022-07-22 22:09:19,069 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 22:09:19,069 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i [2022-07-22 22:09:19,108 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cc7ca1be/e19e0e93db9d41b093a498ef85b252fa/FLAG3ae9054e4 [2022-07-22 22:09:19,172 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/0cc7ca1be/e19e0e93db9d41b093a498ef85b252fa [2022-07-22 22:09:19,175 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 22:09:19,176 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 22:09:19,179 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 22:09:19,179 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 22:09:19,182 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 22:09:19,182 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:09:19" (1/1) ... [2022-07-22 22:09:19,183 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6e37d80f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:09:19, skipping insertion in model container [2022-07-22 22:09:19,183 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:09:19" (1/1) ... [2022-07-22 22:09:19,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 22:09:19,300 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 22:09:19,563 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_clean_up_secure_harness.i[4502,4515] [2022-07-22 22:09:19,570 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_clean_up_secure_harness.i[4562,4575] [2022-07-22 22:09:20,129 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:09:20,130 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:09:20,130 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:09:20,131 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:09:20,132 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:09:20,140 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:09:20,141 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:09:20,142 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:09:20,144 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:09:20,387 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-22 22:09:20,389 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-22 22:09:20,390 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-22 22:09:20,391 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-22 22:09:20,394 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-22 22:09:20,397 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-22 22:09:20,398 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-22 22:09:20,399 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-22 22:09:20,401 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-22 22:09:20,403 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-22 22:09:20,504 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-22 22:09:20,563 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:09:20,563 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:09:20,633 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:09:20,683 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 22:09:20,696 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_clean_up_secure_harness.i[4502,4515] [2022-07-22 22:09:20,697 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_clean_up_secure_harness.i[4562,4575] [2022-07-22 22:09:20,728 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:09:20,728 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:09:20,728 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:09:20,729 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:09:20,729 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:09:20,739 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:09:20,739 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:09:20,740 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:09:20,740 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:09:20,769 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-22 22:09:20,771 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-22 22:09:20,772 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-22 22:09:20,773 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-22 22:09:20,774 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-22 22:09:20,774 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-22 22:09:20,775 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-22 22:09:20,776 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-22 22:09:20,777 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-22 22:09:20,778 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-22 22:09:20,809 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-22 22:09:20,867 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:09:20,868 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:09:20,928 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:09:21,131 INFO L208 MainTranslator]: Completed translation [2022-07-22 22:09:21,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:09:21 WrapperNode [2022-07-22 22:09:21,132 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 22:09:21,132 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 22:09:21,133 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 22:09:21,133 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 22:09:21,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:09:21" (1/1) ... [2022-07-22 22:09:21,224 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:09:21" (1/1) ... [2022-07-22 22:09:21,280 INFO L137 Inliner]: procedures = 691, calls = 2504, calls flagged for inlining = 56, calls inlined = 8, statements flattened = 817 [2022-07-22 22:09:21,281 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 22:09:21,282 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 22:09:21,282 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 22:09:21,282 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 22:09:21,289 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:09:21" (1/1) ... [2022-07-22 22:09:21,289 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:09:21" (1/1) ... [2022-07-22 22:09:21,297 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:09:21" (1/1) ... [2022-07-22 22:09:21,297 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:09:21" (1/1) ... [2022-07-22 22:09:21,339 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:09:21" (1/1) ... [2022-07-22 22:09:21,342 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:09:21" (1/1) ... [2022-07-22 22:09:21,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:09:21" (1/1) ... [2022-07-22 22:09:21,355 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 22:09:21,355 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 22:09:21,355 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 22:09:21,356 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 22:09:21,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:09:21" (1/1) ... [2022-07-22 22:09:21,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:09:21,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:09:21,387 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) [2022-07-22 22:09:21,411 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 [2022-07-22 22:09:21,434 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-07-22 22:09:21,434 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-07-22 22:09:21,434 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 22:09:21,434 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-22 22:09:21,435 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-22 22:09:21,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 22:09:21,435 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-22 22:09:21,435 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-22 22:09:21,436 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_secure_zero [2022-07-22 22:09:21,436 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_secure_zero [2022-07-22 22:09:21,436 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 22:09:21,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 22:09:21,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 22:09:21,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 22:09:21,438 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 22:09:21,438 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-22 22:09:21,439 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-22 22:09:21,439 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-07-22 22:09:21,439 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-07-22 22:09:21,439 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 22:09:21,439 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 22:09:21,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 22:09:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 22:09:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 22:09:21,440 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-22 22:09:21,440 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-22 22:09:21,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 22:09:21,441 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2022-07-22 22:09:21,441 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2022-07-22 22:09:21,441 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2022-07-22 22:09:21,442 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2022-07-22 22:09:21,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 22:09:21,702 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 22:09:21,707 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 22:09:22,649 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 22:09:22,657 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 22:09:22,658 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-22 22:09:22,660 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:09:22 BoogieIcfgContainer [2022-07-22 22:09:22,660 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 22:09:22,662 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 22:09:22,662 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 22:09:22,665 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 22:09:22,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 10:09:19" (1/3) ... [2022-07-22 22:09:22,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@350e33fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:09:22, skipping insertion in model container [2022-07-22 22:09:22,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:09:21" (2/3) ... [2022-07-22 22:09:22,667 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@350e33fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:09:22, skipping insertion in model container [2022-07-22 22:09:22,667 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:09:22" (3/3) ... [2022-07-22 22:09:22,668 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_clean_up_secure_harness.i [2022-07-22 22:09:22,682 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 22:09:22,682 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 22:09:22,738 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 22:09:22,746 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@23e75094, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@793a1c28 [2022-07-22 22:09:22,746 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 22:09:22,750 INFO L276 IsEmpty]: Start isEmpty. Operand has 119 states, 79 states have (on average 1.2278481012658229) internal successors, (97), 80 states have internal predecessors, (97), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) [2022-07-22 22:09:22,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-22 22:09:22,762 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:09:22,763 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:09:22,763 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:09:22,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:09:22,768 INFO L85 PathProgramCache]: Analyzing trace with hash -1424840205, now seen corresponding path program 1 times [2022-07-22 22:09:22,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:09:22,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383231361] [2022-07-22 22:09:22,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:22,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:09:23,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:23,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:09:23,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:23,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:09:23,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:23,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:09:23,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:23,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:23,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:23,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:09:23,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:23,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:09:23,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:23,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 22:09:23,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:23,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:09:23,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:23,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 22:09:23,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:23,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 22:09:23,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:23,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 22:09:23,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:23,441 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-22 22:09:23,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:23,442 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383231361] [2022-07-22 22:09:23,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383231361] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:09:23,443 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:09:23,443 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-22 22:09:23,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868676183] [2022-07-22 22:09:23,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:09:23,449 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-22 22:09:23,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:09:23,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-22 22:09:23,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 22:09:23,475 INFO L87 Difference]: Start difference. First operand has 119 states, 79 states have (on average 1.2278481012658229) internal successors, (97), 80 states have internal predecessors, (97), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (28), 28 states have call predecessors, (28), 28 states have call successors, (28) Second operand has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 22:09:23,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:09:23,695 INFO L93 Difference]: Finished difference Result 236 states and 323 transitions. [2022-07-22 22:09:23,696 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-22 22:09:23,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 77 [2022-07-22 22:09:23,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:09:23,705 INFO L225 Difference]: With dead ends: 236 [2022-07-22 22:09:23,705 INFO L226 Difference]: Without dead ends: 116 [2022-07-22 22:09:23,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-22 22:09:23,711 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 61 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 170 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:09:23,712 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 170 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 22:09:23,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-07-22 22:09:23,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2022-07-22 22:09:23,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 75 states have (on average 1.2) internal successors, (90), 76 states have internal predecessors, (90), 28 states have call successors, (28), 10 states have call predecessors, (28), 10 states have return successors, (27), 27 states have call predecessors, (27), 27 states have call successors, (27) [2022-07-22 22:09:23,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 145 transitions. [2022-07-22 22:09:23,775 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 145 transitions. Word has length 77 [2022-07-22 22:09:23,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:09:23,775 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 145 transitions. [2022-07-22 22:09:23,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.666666666666666) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 22:09:23,776 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 145 transitions. [2022-07-22 22:09:23,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-22 22:09:23,784 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:09:23,784 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:09:23,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 22:09:23,785 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:09:23,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:09:23,786 INFO L85 PathProgramCache]: Analyzing trace with hash -1664499927, now seen corresponding path program 1 times [2022-07-22 22:09:23,786 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:09:23,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366102803] [2022-07-22 22:09:23,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:23,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:09:23,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:23,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:09:23,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:24,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:09:24,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:24,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:09:24,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:24,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:24,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:24,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:09:24,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:24,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-22 22:09:24,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:24,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 22:09:24,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:24,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:09:24,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:24,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-22 22:09:24,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:24,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 22:09:24,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:24,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 22:09:24,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:24,127 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-07-22 22:09:24,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:24,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366102803] [2022-07-22 22:09:24,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366102803] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:09:24,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [380282090] [2022-07-22 22:09:24,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:24,128 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:09:24,137 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:09:24,139 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) [2022-07-22 22:09:24,140 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 22:09:24,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:24,574 INFO L263 TraceCheckSpWp]: Trace formula consists of 2503 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-22 22:09:24,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:09:24,770 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-22 22:09:24,770 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:09:24,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [380282090] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:09:24,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:09:24,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-07-22 22:09:24,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210650309] [2022-07-22 22:09:24,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:09:24,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 22:09:24,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:09:24,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 22:09:24,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-22 22:09:24,774 INFO L87 Difference]: Start difference. First operand 114 states and 145 transitions. Second operand has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 22:09:24,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:09:24,940 INFO L93 Difference]: Finished difference Result 206 states and 269 transitions. [2022-07-22 22:09:24,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:09:24,941 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 77 [2022-07-22 22:09:24,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:09:24,946 INFO L225 Difference]: With dead ends: 206 [2022-07-22 22:09:24,946 INFO L226 Difference]: Without dead ends: 117 [2022-07-22 22:09:24,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-22 22:09:24,954 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 167 mSDsluCounter, 204 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 320 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:09:24,954 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 320 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:09:24,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-07-22 22:09:24,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2022-07-22 22:09:24,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 77 states have (on average 1.1948051948051948) internal successors, (92), 79 states have internal predecessors, (92), 28 states have call successors, (28), 10 states have call predecessors, (28), 11 states have return successors, (32), 27 states have call predecessors, (32), 27 states have call successors, (32) [2022-07-22 22:09:24,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 152 transitions. [2022-07-22 22:09:24,978 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 152 transitions. Word has length 77 [2022-07-22 22:09:24,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:09:24,979 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 152 transitions. [2022-07-22 22:09:24,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.0) internal successors, (36), 6 states have internal predecessors, (36), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 22:09:24,979 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 152 transitions. [2022-07-22 22:09:24,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-22 22:09:24,982 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:09:24,983 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:09:25,020 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 22:09:25,199 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 [2022-07-22 22:09:25,199 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:09:25,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:09:25,200 INFO L85 PathProgramCache]: Analyzing trace with hash -1289533548, now seen corresponding path program 1 times [2022-07-22 22:09:25,200 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:09:25,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [945152628] [2022-07-22 22:09:25,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:25,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:09:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:25,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:09:25,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:25,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:09:25,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:25,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:09:25,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:25,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:25,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:25,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:09:25,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:25,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 22:09:25,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:25,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:09:25,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:25,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:09:25,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:25,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-22 22:09:25,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:25,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:09:25,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:25,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-22 22:09:25,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:25,595 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-07-22 22:09:25,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:25,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [945152628] [2022-07-22 22:09:25,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [945152628] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:09:25,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1215351304] [2022-07-22 22:09:25,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:25,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:09:25,596 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:09:25,597 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) [2022-07-22 22:09:25,628 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 22:09:26,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:26,039 INFO L263 TraceCheckSpWp]: Trace formula consists of 2520 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 22:09:26,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:09:26,146 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-22 22:09:26,146 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:09:26,146 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1215351304] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:09:26,147 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:09:26,147 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2022-07-22 22:09:26,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679835943] [2022-07-22 22:09:26,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:09:26,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 22:09:26,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:09:26,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 22:09:26,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:09:26,149 INFO L87 Difference]: Start difference. First operand 117 states and 152 transitions. Second operand has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-22 22:09:26,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:09:26,347 INFO L93 Difference]: Finished difference Result 206 states and 269 transitions. [2022-07-22 22:09:26,348 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 22:09:26,348 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) Word has length 83 [2022-07-22 22:09:26,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:09:26,351 INFO L225 Difference]: With dead ends: 206 [2022-07-22 22:09:26,352 INFO L226 Difference]: Without dead ends: 117 [2022-07-22 22:09:26,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 100 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-07-22 22:09:26,353 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 182 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 175 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:09:26,354 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 505 Invalid, 175 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:09:26,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-07-22 22:09:26,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2022-07-22 22:09:26,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 77 states have (on average 1.1948051948051948) internal successors, (92), 79 states have internal predecessors, (92), 28 states have call successors, (28), 10 states have call predecessors, (28), 11 states have return successors, (30), 27 states have call predecessors, (30), 27 states have call successors, (30) [2022-07-22 22:09:26,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 150 transitions. [2022-07-22 22:09:26,364 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 150 transitions. Word has length 83 [2022-07-22 22:09:26,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:09:26,364 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 150 transitions. [2022-07-22 22:09:26,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-22 22:09:26,364 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 150 transitions. [2022-07-22 22:09:26,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-22 22:09:26,365 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:09:26,366 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:09:26,394 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 22:09:26,575 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,SelfDestructingSolverStorable2 [2022-07-22 22:09:26,576 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:09:26,576 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:09:26,576 INFO L85 PathProgramCache]: Analyzing trace with hash -596597057, now seen corresponding path program 2 times [2022-07-22 22:09:26,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:09:26,576 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958429121] [2022-07-22 22:09:26,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:26,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:09:26,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:26,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:09:26,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:26,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:09:26,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:26,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:09:26,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:26,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:26,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:26,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:09:26,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:26,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 22:09:26,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:26,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:09:26,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:26,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 22:09:26,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:26,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:09:26,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:26,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:09:26,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:26,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-22 22:09:26,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:26,898 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-07-22 22:09:26,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:26,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958429121] [2022-07-22 22:09:26,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958429121] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:09:26,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [760653407] [2022-07-22 22:09:26,899 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 22:09:26,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:09:26,899 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:09:26,904 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) [2022-07-22 22:09:26,905 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 22:09:27,312 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 22:09:27,312 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:09:27,321 INFO L263 TraceCheckSpWp]: Trace formula consists of 2537 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-22 22:09:27,325 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:09:27,480 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-22 22:09:27,480 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:09:27,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [760653407] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:09:27,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:09:27,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 19 [2022-07-22 22:09:27,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [347236280] [2022-07-22 22:09:27,481 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:09:27,481 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 22:09:27,481 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:09:27,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 22:09:27,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-07-22 22:09:27,482 INFO L87 Difference]: Start difference. First operand 117 states and 150 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 5 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-22 22:09:27,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:09:27,720 INFO L93 Difference]: Finished difference Result 201 states and 258 transitions. [2022-07-22 22:09:27,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 22:09:27,721 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 5 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 89 [2022-07-22 22:09:27,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:09:27,722 INFO L225 Difference]: With dead ends: 201 [2022-07-22 22:09:27,722 INFO L226 Difference]: Without dead ends: 117 [2022-07-22 22:09:27,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=519, Unknown=0, NotChecked=0, Total=600 [2022-07-22 22:09:27,724 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 189 mSDsluCounter, 552 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 189 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 293 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:09:27,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 660 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 22:09:27,725 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-07-22 22:09:27,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2022-07-22 22:09:27,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 77 states have (on average 1.1948051948051948) internal successors, (92), 79 states have internal predecessors, (92), 28 states have call successors, (28), 10 states have call predecessors, (28), 11 states have return successors, (28), 27 states have call predecessors, (28), 27 states have call successors, (28) [2022-07-22 22:09:27,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 148 transitions. [2022-07-22 22:09:27,739 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 148 transitions. Word has length 89 [2022-07-22 22:09:27,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:09:27,741 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 148 transitions. [2022-07-22 22:09:27,741 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 5 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2022-07-22 22:09:27,742 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 148 transitions. [2022-07-22 22:09:27,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-22 22:09:27,746 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:09:27,747 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:09:27,771 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 22:09:27,963 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:09:27,963 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:09:27,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:09:27,964 INFO L85 PathProgramCache]: Analyzing trace with hash 24265301, now seen corresponding path program 1 times [2022-07-22 22:09:27,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:09:27,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792830088] [2022-07-22 22:09:27,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:27,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:09:28,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:28,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:09:28,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:28,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:09:28,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:28,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:09:28,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:28,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:28,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:28,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:09:28,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:28,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 22:09:28,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:28,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:09:28,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:28,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 22:09:28,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:28,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:09:28,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:28,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:09:28,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:28,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 22:09:28,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:28,267 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-07-22 22:09:28,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:28,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [792830088] [2022-07-22 22:09:28,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [792830088] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:09:28,267 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:09:28,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 22:09:28,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485933631] [2022-07-22 22:09:28,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:09:28,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 22:09:28,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:09:28,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 22:09:28,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-22 22:09:28,269 INFO L87 Difference]: Start difference. First operand 117 states and 148 transitions. Second operand has 9 states, 8 states have (on average 4.875) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-22 22:09:28,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:09:28,796 INFO L93 Difference]: Finished difference Result 131 states and 167 transitions. [2022-07-22 22:09:28,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 22:09:28,796 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 101 [2022-07-22 22:09:28,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:09:28,798 INFO L225 Difference]: With dead ends: 131 [2022-07-22 22:09:28,798 INFO L226 Difference]: Without dead ends: 129 [2022-07-22 22:09:28,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:09:28,799 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 87 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 456 SdHoareTripleChecker+Invalid, 661 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 22:09:28,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 456 Invalid, 661 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 22:09:28,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-07-22 22:09:28,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 126. [2022-07-22 22:09:28,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 83 states have (on average 1.180722891566265) internal successors, (98), 86 states have internal predecessors, (98), 29 states have call successors, (29), 11 states have call predecessors, (29), 13 states have return successors, (35), 28 states have call predecessors, (35), 28 states have call successors, (35) [2022-07-22 22:09:28,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 162 transitions. [2022-07-22 22:09:28,816 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 162 transitions. Word has length 101 [2022-07-22 22:09:28,816 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:09:28,816 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 162 transitions. [2022-07-22 22:09:28,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 6 states have internal predecessors, (39), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-22 22:09:28,817 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 162 transitions. [2022-07-22 22:09:28,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-22 22:09:28,818 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:09:28,818 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:09:28,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-22 22:09:28,818 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:09:28,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:09:28,819 INFO L85 PathProgramCache]: Analyzing trace with hash 1524483933, now seen corresponding path program 1 times [2022-07-22 22:09:28,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:09:28,819 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174252864] [2022-07-22 22:09:28,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:28,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:09:28,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:29,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:09:29,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:29,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:09:29,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:29,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:09:29,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:29,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:29,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:29,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:09:29,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:29,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 22:09:29,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:29,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:09:29,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:29,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 22:09:29,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:29,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:09:29,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:29,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:09:29,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:29,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 22:09:29,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:29,172 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-22 22:09:29,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:29,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174252864] [2022-07-22 22:09:29,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174252864] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:09:29,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:09:29,173 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 22:09:29,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461628479] [2022-07-22 22:09:29,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:09:29,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 22:09:29,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:09:29,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 22:09:29,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-22 22:09:29,175 INFO L87 Difference]: Start difference. First operand 126 states and 162 transitions. Second operand has 9 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 22:09:29,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:09:29,712 INFO L93 Difference]: Finished difference Result 207 states and 268 transitions. [2022-07-22 22:09:29,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 22:09:29,713 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 105 [2022-07-22 22:09:29,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:09:29,714 INFO L225 Difference]: With dead ends: 207 [2022-07-22 22:09:29,714 INFO L226 Difference]: Without dead ends: 140 [2022-07-22 22:09:29,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=147, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:09:29,715 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 144 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 351 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 22:09:29,715 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 351 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 22:09:29,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-07-22 22:09:29,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 133. [2022-07-22 22:09:29,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 133 states, 89 states have (on average 1.1797752808988764) internal successors, (105), 93 states have internal predecessors, (105), 29 states have call successors, (29), 11 states have call predecessors, (29), 14 states have return successors, (40), 28 states have call predecessors, (40), 28 states have call successors, (40) [2022-07-22 22:09:29,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 174 transitions. [2022-07-22 22:09:29,725 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 174 transitions. Word has length 105 [2022-07-22 22:09:29,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:09:29,726 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 174 transitions. [2022-07-22 22:09:29,726 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 22:09:29,726 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 174 transitions. [2022-07-22 22:09:29,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-22 22:09:29,727 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:09:29,728 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:09:29,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-22 22:09:29,728 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:09:29,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:09:29,728 INFO L85 PathProgramCache]: Analyzing trace with hash 1782649371, now seen corresponding path program 1 times [2022-07-22 22:09:29,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:09:29,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781588592] [2022-07-22 22:09:29,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:29,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:09:29,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:30,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:09:30,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:30,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:09:30,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:30,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:09:30,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:30,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:30,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:30,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:09:30,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:30,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 22:09:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:30,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:09:30,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:30,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 22:09:30,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:30,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:09:30,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:30,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:09:30,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:30,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 22:09:30,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:30,212 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-22 22:09:30,212 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:30,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781588592] [2022-07-22 22:09:30,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781588592] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:09:30,213 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [861362128] [2022-07-22 22:09:30,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:30,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:09:30,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:09:30,214 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) [2022-07-22 22:09:30,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 22:09:30,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:30,636 INFO L263 TraceCheckSpWp]: Trace formula consists of 2578 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-22 22:09:30,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:09:30,733 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 [2022-07-22 22:09:30,944 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-22 22:09:30,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:09:30,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [861362128] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:09:30,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:09:30,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 17 [2022-07-22 22:09:30,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676919237] [2022-07-22 22:09:30,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:09:30,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-22 22:09:30,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:09:30,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-22 22:09:30,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-07-22 22:09:30,973 INFO L87 Difference]: Start difference. First operand 133 states and 174 transitions. Second operand has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 10 states have internal predecessors, (53), 5 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-07-22 22:09:31,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:09:31,015 INFO L93 Difference]: Finished difference Result 261 states and 340 transitions. [2022-07-22 22:09:31,016 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 22:09:31,016 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 10 states have internal predecessors, (53), 5 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) Word has length 105 [2022-07-22 22:09:31,016 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:09:31,017 INFO L225 Difference]: With dead ends: 261 [2022-07-22 22:09:31,018 INFO L226 Difference]: Without dead ends: 146 [2022-07-22 22:09:31,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 121 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-07-22 22:09:31,019 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 35 mSDsluCounter, 405 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 37 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:09:31,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 545 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 18 Invalid, 0 Unknown, 37 Unchecked, 0.0s Time] [2022-07-22 22:09:31,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-07-22 22:09:31,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2022-07-22 22:09:31,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 101 states have (on average 1.188118811881188) internal successors, (120), 105 states have internal predecessors, (120), 29 states have call successors, (29), 12 states have call predecessors, (29), 15 states have return successors, (40), 28 states have call predecessors, (40), 28 states have call successors, (40) [2022-07-22 22:09:31,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 189 transitions. [2022-07-22 22:09:31,028 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 189 transitions. Word has length 105 [2022-07-22 22:09:31,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:09:31,028 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 189 transitions. [2022-07-22 22:09:31,029 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.416666666666667) internal successors, (53), 10 states have internal predecessors, (53), 5 states have call successors, (13), 3 states have call predecessors, (13), 4 states have return successors, (11), 5 states have call predecessors, (11), 5 states have call successors, (11) [2022-07-22 22:09:31,029 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 189 transitions. [2022-07-22 22:09:31,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-22 22:09:31,030 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:09:31,030 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:09:31,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-22 22:09:31,255 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:09:31,255 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:09:31,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:09:31,256 INFO L85 PathProgramCache]: Analyzing trace with hash -128393187, now seen corresponding path program 1 times [2022-07-22 22:09:31,256 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:09:31,256 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730313820] [2022-07-22 22:09:31,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:31,256 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:09:31,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:09:31,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:09:31,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:09:31,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:31,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:09:31,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-22 22:09:31,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:09:31,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-22 22:09:31,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-22 22:09:31,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:09:31,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-22 22:09:31,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,429 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-22 22:09:31,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:31,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730313820] [2022-07-22 22:09:31,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730313820] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:09:31,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [568189804] [2022-07-22 22:09:31,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:31,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:09:31,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:09:31,431 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) [2022-07-22 22:09:31,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 22:09:31,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:31,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 2573 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-22 22:09:31,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:09:31,848 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-22 22:09:31,848 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:09:31,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [568189804] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:09:31,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:09:31,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-22 22:09:31,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750712936] [2022-07-22 22:09:31,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:09:31,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-22 22:09:31,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:09:31,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-22 22:09:31,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:09:31,850 INFO L87 Difference]: Start difference. First operand 146 states and 189 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 22:09:31,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:09:31,877 INFO L93 Difference]: Finished difference Result 269 states and 358 transitions. [2022-07-22 22:09:31,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:09:31,878 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 105 [2022-07-22 22:09:31,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:09:31,879 INFO L225 Difference]: With dead ends: 269 [2022-07-22 22:09:31,879 INFO L226 Difference]: Without dead ends: 157 [2022-07-22 22:09:31,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-22 22:09:31,882 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 20 mSDsluCounter, 271 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 427 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 [2022-07-22 22:09:31,882 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 427 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-22 22:09:31,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-07-22 22:09:31,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 140. [2022-07-22 22:09:31,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 96 states have (on average 1.1875) internal successors, (114), 99 states have internal predecessors, (114), 29 states have call successors, (29), 12 states have call predecessors, (29), 14 states have return successors, (39), 28 states have call predecessors, (39), 28 states have call successors, (39) [2022-07-22 22:09:31,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 182 transitions. [2022-07-22 22:09:31,905 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 182 transitions. Word has length 105 [2022-07-22 22:09:31,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:09:31,905 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 182 transitions. [2022-07-22 22:09:31,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 22:09:31,905 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 182 transitions. [2022-07-22 22:09:31,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-22 22:09:31,907 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:09:31,907 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:09:31,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 22:09:32,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:09:32,108 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:09:32,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:09:32,108 INFO L85 PathProgramCache]: Analyzing trace with hash 322364323, now seen corresponding path program 1 times [2022-07-22 22:09:32,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:09:32,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144677017] [2022-07-22 22:09:32,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:32,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:09:32,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:32,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:09:32,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:32,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:09:32,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:32,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:09:32,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:32,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:32,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:32,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:09:32,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:32,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:09:32,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:32,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 22:09:32,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:32,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 22:09:32,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:32,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 22:09:32,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:32,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 22:09:32,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:32,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 22:09:32,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:32,393 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-22 22:09:32,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:32,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144677017] [2022-07-22 22:09:32,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144677017] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:09:32,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1995870908] [2022-07-22 22:09:32,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:32,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:09:32,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:09:32,396 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) [2022-07-22 22:09:32,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 22:09:32,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:32,819 INFO L263 TraceCheckSpWp]: Trace formula consists of 2590 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 22:09:32,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:09:32,908 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-22 22:09:32,908 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:09:32,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1995870908] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:09:32,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:09:32,908 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2022-07-22 22:09:32,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170065093] [2022-07-22 22:09:32,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:09:32,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 22:09:32,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:09:32,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 22:09:32,909 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-07-22 22:09:32,910 INFO L87 Difference]: Start difference. First operand 140 states and 182 transitions. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 22:09:33,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:09:33,042 INFO L93 Difference]: Finished difference Result 272 states and 376 transitions. [2022-07-22 22:09:33,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:09:33,042 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 109 [2022-07-22 22:09:33,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:09:33,044 INFO L225 Difference]: With dead ends: 272 [2022-07-22 22:09:33,044 INFO L226 Difference]: Without dead ends: 162 [2022-07-22 22:09:33,044 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-22 22:09:33,045 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 42 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 508 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:09:33,045 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 508 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 66 Invalid, 0 Unknown, 31 Unchecked, 0.1s Time] [2022-07-22 22:09:33,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-07-22 22:09:33,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 149. [2022-07-22 22:09:33,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 105 states have (on average 1.2) internal successors, (126), 108 states have internal predecessors, (126), 29 states have call successors, (29), 12 states have call predecessors, (29), 14 states have return successors, (39), 28 states have call predecessors, (39), 28 states have call successors, (39) [2022-07-22 22:09:33,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 194 transitions. [2022-07-22 22:09:33,068 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 194 transitions. Word has length 109 [2022-07-22 22:09:33,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:09:33,068 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 194 transitions. [2022-07-22 22:09:33,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 22:09:33,069 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 194 transitions. [2022-07-22 22:09:33,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-22 22:09:33,070 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:09:33,070 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:09:33,099 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 22:09:33,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:09:33,288 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:09:33,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:09:33,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1209587169, now seen corresponding path program 2 times [2022-07-22 22:09:33,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:09:33,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1562982536] [2022-07-22 22:09:33,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:33,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:09:33,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:33,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:09:33,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:33,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:09:33,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:33,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:09:33,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:33,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:33,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:33,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:09:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:33,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:09:33,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:33,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 22:09:33,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:33,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 22:09:33,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:33,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 22:09:33,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:33,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 22:09:33,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:33,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 22:09:33,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:33,537 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-22 22:09:33,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:33,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1562982536] [2022-07-22 22:09:33,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1562982536] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:09:33,537 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659290532] [2022-07-22 22:09:33,537 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 22:09:33,537 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:09:33,537 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:09:33,539 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) [2022-07-22 22:09:33,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 22:09:33,916 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-22 22:09:33,916 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:09:33,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 2334 conjuncts, 27 conjunts are in the unsatisfiable core [2022-07-22 22:09:33,928 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:09:33,979 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-22 22:09:33,980 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 21 treesize of output 20 [2022-07-22 22:09:33,987 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:33,988 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 21 treesize of output 20 [2022-07-22 22:09:34,394 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-22 22:09:34,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:09:34,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659290532] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:09:34,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:09:34,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2022-07-22 22:09:34,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1662822249] [2022-07-22 22:09:34,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:09:34,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 22:09:34,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:09:34,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 22:09:34,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2022-07-22 22:09:34,396 INFO L87 Difference]: Start difference. First operand 149 states and 194 transitions. Second operand has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 22:09:34,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:09:34,515 INFO L93 Difference]: Finished difference Result 270 states and 347 transitions. [2022-07-22 22:09:34,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-22 22:09:34,516 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 109 [2022-07-22 22:09:34,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:09:34,518 INFO L225 Difference]: With dead ends: 270 [2022-07-22 22:09:34,518 INFO L226 Difference]: Without dead ends: 173 [2022-07-22 22:09:34,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2022-07-22 22:09:34,519 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 30 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 80 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:09:34,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 612 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 80 Unchecked, 0.1s Time] [2022-07-22 22:09:34,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-07-22 22:09:34,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 167. [2022-07-22 22:09:34,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 122 states have (on average 1.221311475409836) internal successors, (149), 125 states have internal predecessors, (149), 30 states have call successors, (30), 13 states have call predecessors, (30), 14 states have return successors, (41), 28 states have call predecessors, (41), 29 states have call successors, (41) [2022-07-22 22:09:34,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 220 transitions. [2022-07-22 22:09:34,529 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 220 transitions. Word has length 109 [2022-07-22 22:09:34,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:09:34,530 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 220 transitions. [2022-07-22 22:09:34,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.0) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 22:09:34,530 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 220 transitions. [2022-07-22 22:09:34,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-22 22:09:34,531 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:09:34,531 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:09:34,558 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-22 22:09:34,757 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:09:34,758 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:09:34,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:09:34,758 INFO L85 PathProgramCache]: Analyzing trace with hash -70276509, now seen corresponding path program 2 times [2022-07-22 22:09:34,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:09:34,758 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680532257] [2022-07-22 22:09:34,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:34,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:09:34,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:34,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:09:34,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:34,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:09:34,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:34,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:09:34,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:34,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:34,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:34,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:09:34,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:34,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:09:34,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:34,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 22:09:34,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:34,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 22:09:34,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:34,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 22:09:34,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:34,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 22:09:34,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:34,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 22:09:34,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:35,020 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-22 22:09:35,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:35,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680532257] [2022-07-22 22:09:35,020 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680532257] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:09:35,021 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:09:35,021 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-22 22:09:35,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970079612] [2022-07-22 22:09:35,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:09:35,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 22:09:35,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:09:35,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 22:09:35,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-22 22:09:35,022 INFO L87 Difference]: Start difference. First operand 167 states and 220 transitions. Second operand has 9 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 22:09:35,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:09:35,662 INFO L93 Difference]: Finished difference Result 276 states and 361 transitions. [2022-07-22 22:09:35,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-22 22:09:35,663 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 109 [2022-07-22 22:09:35,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:09:35,664 INFO L225 Difference]: With dead ends: 276 [2022-07-22 22:09:35,664 INFO L226 Difference]: Without dead ends: 193 [2022-07-22 22:09:35,665 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2022-07-22 22:09:35,665 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 143 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 151 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 744 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 709 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 22:09:35,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 404 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 22:09:35,666 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-07-22 22:09:35,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 174. [2022-07-22 22:09:35,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 129 states have (on average 1.2248062015503876) internal successors, (158), 132 states have internal predecessors, (158), 30 states have call successors, (30), 13 states have call predecessors, (30), 14 states have return successors, (41), 28 states have call predecessors, (41), 29 states have call successors, (41) [2022-07-22 22:09:35,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 229 transitions. [2022-07-22 22:09:35,674 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 229 transitions. Word has length 109 [2022-07-22 22:09:35,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:09:35,674 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 229 transitions. [2022-07-22 22:09:35,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 22:09:35,675 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 229 transitions. [2022-07-22 22:09:35,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-22 22:09:35,676 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:09:35,676 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:09:35,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-22 22:09:35,676 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:09:35,676 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:09:35,676 INFO L85 PathProgramCache]: Analyzing trace with hash -1658624411, now seen corresponding path program 1 times [2022-07-22 22:09:35,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:09:35,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014551339] [2022-07-22 22:09:35,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:35,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:09:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:35,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:09:35,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:35,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:09:35,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:35,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:09:35,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:35,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:35,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:35,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:09:35,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:35,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:09:35,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:35,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 22:09:35,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:35,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 22:09:35,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:35,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 22:09:35,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:35,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 22:09:35,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:35,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 22:09:35,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:35,921 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-22 22:09:35,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:35,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014551339] [2022-07-22 22:09:35,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014551339] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:09:35,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1143789686] [2022-07-22 22:09:35,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:35,922 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:09:35,922 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:09:35,923 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) [2022-07-22 22:09:35,925 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-22 22:09:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:36,318 INFO L263 TraceCheckSpWp]: Trace formula consists of 2577 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-22 22:09:36,321 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:09:36,421 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-07-22 22:09:36,421 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:09:36,421 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1143789686] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:09:36,421 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:09:36,421 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2022-07-22 22:09:36,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227911350] [2022-07-22 22:09:36,422 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:09:36,422 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 22:09:36,422 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:09:36,423 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 22:09:36,423 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-07-22 22:09:36,423 INFO L87 Difference]: Start difference. First operand 174 states and 229 transitions. Second operand has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-22 22:09:36,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:09:36,583 INFO L93 Difference]: Finished difference Result 333 states and 459 transitions. [2022-07-22 22:09:36,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:09:36,583 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 109 [2022-07-22 22:09:36,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:09:36,585 INFO L225 Difference]: With dead ends: 333 [2022-07-22 22:09:36,585 INFO L226 Difference]: Without dead ends: 193 [2022-07-22 22:09:36,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:09:36,586 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 28 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 31 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:09:36,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 545 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 56 Invalid, 0 Unknown, 31 Unchecked, 0.1s Time] [2022-07-22 22:09:36,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-07-22 22:09:36,594 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 174. [2022-07-22 22:09:36,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 129 states have (on average 1.2093023255813953) internal successors, (156), 132 states have internal predecessors, (156), 30 states have call successors, (30), 13 states have call predecessors, (30), 14 states have return successors, (41), 28 states have call predecessors, (41), 29 states have call successors, (41) [2022-07-22 22:09:36,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 227 transitions. [2022-07-22 22:09:36,595 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 227 transitions. Word has length 109 [2022-07-22 22:09:36,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:09:36,596 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 227 transitions. [2022-07-22 22:09:36,596 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.6) internal successors, (53), 5 states have internal predecessors, (53), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-22 22:09:36,596 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 227 transitions. [2022-07-22 22:09:36,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 22:09:36,597 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:09:36,597 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:09:36,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-22 22:09:36,797 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 [2022-07-22 22:09:36,798 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:09:36,798 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:09:36,798 INFO L85 PathProgramCache]: Analyzing trace with hash 54187592, now seen corresponding path program 1 times [2022-07-22 22:09:36,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:09:36,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1007205103] [2022-07-22 22:09:36,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:36,799 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:09:36,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:36,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:09:36,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:36,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:09:36,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:36,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:09:36,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:36,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:36,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:36,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:09:36,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:36,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:09:36,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:36,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 22:09:36,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:36,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 22:09:36,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:36,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 22:09:36,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:36,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 22:09:36,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:36,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 22:09:36,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:36,970 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-07-22 22:09:36,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:36,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1007205103] [2022-07-22 22:09:36,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1007205103] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:09:36,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:09:36,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 22:09:36,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1406706510] [2022-07-22 22:09:36,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:09:36,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 22:09:36,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:09:36,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 22:09:36,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:09:36,972 INFO L87 Difference]: Start difference. First operand 174 states and 227 transitions. Second operand has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-22 22:09:37,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:09:37,207 INFO L93 Difference]: Finished difference Result 322 states and 432 transitions. [2022-07-22 22:09:37,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:09:37,208 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 111 [2022-07-22 22:09:37,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:09:37,210 INFO L225 Difference]: With dead ends: 322 [2022-07-22 22:09:37,210 INFO L226 Difference]: Without dead ends: 179 [2022-07-22 22:09:37,211 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 22:09:37,212 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 78 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 228 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:09:37,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 259 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 228 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 22:09:37,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-07-22 22:09:37,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 171. [2022-07-22 22:09:37,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 126 states have (on average 1.1825396825396826) internal successors, (149), 129 states have internal predecessors, (149), 30 states have call successors, (30), 13 states have call predecessors, (30), 14 states have return successors, (41), 28 states have call predecessors, (41), 29 states have call successors, (41) [2022-07-22 22:09:37,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 220 transitions. [2022-07-22 22:09:37,226 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 220 transitions. Word has length 111 [2022-07-22 22:09:37,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:09:37,227 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 220 transitions. [2022-07-22 22:09:37,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.8) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-22 22:09:37,227 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 220 transitions. [2022-07-22 22:09:37,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 22:09:37,228 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:09:37,228 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:09:37,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-22 22:09:37,229 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:09:37,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:09:37,229 INFO L85 PathProgramCache]: Analyzing trace with hash -623638900, now seen corresponding path program 1 times [2022-07-22 22:09:37,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:09:37,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [293493458] [2022-07-22 22:09:37,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:37,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:09:37,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:37,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:09:37,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:37,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:09:37,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:37,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:09:37,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:37,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:37,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:37,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:09:37,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:37,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:09:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:37,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 22:09:37,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:37,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 22:09:37,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:37,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 22:09:37,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:37,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 22:09:37,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:37,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 22:09:37,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:37,393 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-22 22:09:37,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:37,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [293493458] [2022-07-22 22:09:37,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [293493458] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:09:37,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:09:37,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 22:09:37,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1482751505] [2022-07-22 22:09:37,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:09:37,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 22:09:37,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:09:37,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 22:09:37,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:09:37,395 INFO L87 Difference]: Start difference. First operand 171 states and 220 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-22 22:09:37,651 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:09:37,652 INFO L93 Difference]: Finished difference Result 308 states and 415 transitions. [2022-07-22 22:09:37,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:09:37,652 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 111 [2022-07-22 22:09:37,652 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:09:37,653 INFO L225 Difference]: With dead ends: 308 [2022-07-22 22:09:37,653 INFO L226 Difference]: Without dead ends: 171 [2022-07-22 22:09:37,654 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 22:09:37,655 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 86 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 28 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:09:37,655 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 275 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-22 22:09:37,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-07-22 22:09:37,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 159. [2022-07-22 22:09:37,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 114 states have (on average 1.1578947368421053) internal successors, (132), 117 states have internal predecessors, (132), 30 states have call successors, (30), 13 states have call predecessors, (30), 14 states have return successors, (41), 28 states have call predecessors, (41), 29 states have call successors, (41) [2022-07-22 22:09:37,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 203 transitions. [2022-07-22 22:09:37,662 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 203 transitions. Word has length 111 [2022-07-22 22:09:37,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:09:37,663 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 203 transitions. [2022-07-22 22:09:37,663 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-22 22:09:37,663 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 203 transitions. [2022-07-22 22:09:37,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 22:09:37,664 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:09:37,664 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:09:37,664 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-22 22:09:37,664 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:09:37,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:09:37,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1381915916, now seen corresponding path program 1 times [2022-07-22 22:09:37,665 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:09:37,665 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1753369135] [2022-07-22 22:09:37,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:37,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:09:37,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:37,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:09:37,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:37,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:09:37,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:37,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:09:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:37,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:37,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:37,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:09:37,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:37,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:09:37,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:37,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 22:09:37,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:37,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 22:09:37,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:37,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 22:09:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:37,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 22:09:37,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:37,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 22:09:37,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:37,910 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-07-22 22:09:37,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:37,911 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1753369135] [2022-07-22 22:09:37,911 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1753369135] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:09:37,911 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:09:37,911 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-22 22:09:37,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1400480028] [2022-07-22 22:09:37,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:09:37,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-22 22:09:37,912 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:09:37,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-22 22:09:37,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-22 22:09:37,912 INFO L87 Difference]: Start difference. First operand 159 states and 203 transitions. Second operand has 11 states, 10 states have (on average 5.0) internal successors, (50), 8 states have internal predecessors, (50), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-22 22:09:38,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:09:38,470 INFO L93 Difference]: Finished difference Result 175 states and 225 transitions. [2022-07-22 22:09:38,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-22 22:09:38,470 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.0) internal successors, (50), 8 states have internal predecessors, (50), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 111 [2022-07-22 22:09:38,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:09:38,472 INFO L225 Difference]: With dead ends: 175 [2022-07-22 22:09:38,472 INFO L226 Difference]: Without dead ends: 173 [2022-07-22 22:09:38,472 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-07-22 22:09:38,473 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 91 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 103 SdHoareTripleChecker+Valid, 557 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 847 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 22:09:38,473 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 557 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 22:09:38,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-07-22 22:09:38,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 165. [2022-07-22 22:09:38,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 165 states, 119 states have (on average 1.1512605042016806) internal successors, (137), 123 states have internal predecessors, (137), 30 states have call successors, (30), 13 states have call predecessors, (30), 15 states have return successors, (48), 28 states have call predecessors, (48), 29 states have call successors, (48) [2022-07-22 22:09:38,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 215 transitions. [2022-07-22 22:09:38,481 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 215 transitions. Word has length 111 [2022-07-22 22:09:38,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:09:38,482 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 215 transitions. [2022-07-22 22:09:38,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.0) internal successors, (50), 8 states have internal predecessors, (50), 2 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-22 22:09:38,482 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 215 transitions. [2022-07-22 22:09:38,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-22 22:09:38,483 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:09:38,483 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:09:38,483 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-22 22:09:38,484 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:09:38,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:09:38,484 INFO L85 PathProgramCache]: Analyzing trace with hash 2082980494, now seen corresponding path program 1 times [2022-07-22 22:09:38,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:09:38,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912037967] [2022-07-22 22:09:38,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:38,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:09:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:38,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:09:38,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:38,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:09:38,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:38,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:09:38,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:38,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:38,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:38,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:09:38,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:38,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-22 22:09:38,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:38,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-22 22:09:38,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:38,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-22 22:09:38,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:38,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 22:09:38,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:38,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-22 22:09:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:38,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 22:09:38,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:38,754 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-22 22:09:38,755 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:38,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912037967] [2022-07-22 22:09:38,755 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912037967] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:09:38,755 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928917143] [2022-07-22 22:09:38,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:38,756 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:09:38,756 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:09:38,757 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) [2022-07-22 22:09:38,777 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-22 22:09:39,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:39,192 INFO L263 TraceCheckSpWp]: Trace formula consists of 2592 conjuncts, 32 conjunts are in the unsatisfiable core [2022-07-22 22:09:39,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:09:39,249 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-22 22:09:39,250 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:09:39,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928917143] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:09:39,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:09:39,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2022-07-22 22:09:39,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145955193] [2022-07-22 22:09:39,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:09:39,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 22:09:39,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:09:39,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 22:09:39,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-22 22:09:39,252 INFO L87 Difference]: Start difference. First operand 165 states and 215 transitions. Second operand has 9 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 22:09:39,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:09:39,376 INFO L93 Difference]: Finished difference Result 303 states and 400 transitions. [2022-07-22 22:09:39,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 22:09:39,377 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 111 [2022-07-22 22:09:39,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:09:39,380 INFO L225 Difference]: With dead ends: 303 [2022-07-22 22:09:39,380 INFO L226 Difference]: Without dead ends: 166 [2022-07-22 22:09:39,382 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 130 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-07-22 22:09:39,384 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 12 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 140 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 143 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:09:39,386 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1036 Invalid, 143 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 140 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:09:39,386 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-07-22 22:09:39,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2022-07-22 22:09:39,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 119 states have (on average 1.134453781512605) internal successors, (135), 124 states have internal predecessors, (135), 30 states have call successors, (30), 13 states have call predecessors, (30), 16 states have return successors, (52), 28 states have call predecessors, (52), 29 states have call successors, (52) [2022-07-22 22:09:39,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 217 transitions. [2022-07-22 22:09:39,397 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 217 transitions. Word has length 111 [2022-07-22 22:09:39,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:09:39,397 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 217 transitions. [2022-07-22 22:09:39,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 3 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-22 22:09:39,397 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 217 transitions. [2022-07-22 22:09:39,399 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-22 22:09:39,399 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:09:39,399 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-22 22:09:39,428 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-22 22:09:39,619 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,SelfDestructingSolverStorable15 [2022-07-22 22:09:39,619 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:09:39,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:09:39,620 INFO L85 PathProgramCache]: Analyzing trace with hash 555677817, now seen corresponding path program 1 times [2022-07-22 22:09:39,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:09:39,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1484022364] [2022-07-22 22:09:39,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:39,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:09:39,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:39,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:09:39,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:39,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:09:39,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:39,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:09:39,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:39,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:39,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:39,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:09:39,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:39,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:09:39,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:39,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:09:39,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:39,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 22:09:39,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:39,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:09:39,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:39,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:09:39,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:39,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-22 22:09:39,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:39,920 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-22 22:09:39,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:39,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1484022364] [2022-07-22 22:09:39,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1484022364] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:09:39,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:09:39,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-22 22:09:39,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [375291210] [2022-07-22 22:09:39,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:09:39,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-22 22:09:39,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:09:39,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-22 22:09:39,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-22 22:09:39,923 INFO L87 Difference]: Start difference. First operand 166 states and 217 transitions. Second operand has 8 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 22:09:40,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:09:40,373 INFO L93 Difference]: Finished difference Result 263 states and 334 transitions. [2022-07-22 22:09:40,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 22:09:40,373 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 113 [2022-07-22 22:09:40,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:09:40,375 INFO L225 Difference]: With dead ends: 263 [2022-07-22 22:09:40,375 INFO L226 Difference]: Without dead ends: 168 [2022-07-22 22:09:40,375 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2022-07-22 22:09:40,376 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 102 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 317 SdHoareTripleChecker+Invalid, 518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-22 22:09:40,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 317 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-22 22:09:40,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-07-22 22:09:40,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 166. [2022-07-22 22:09:40,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 166 states, 119 states have (on average 1.134453781512605) internal successors, (135), 124 states have internal predecessors, (135), 30 states have call successors, (30), 13 states have call predecessors, (30), 16 states have return successors, (50), 28 states have call predecessors, (50), 29 states have call successors, (50) [2022-07-22 22:09:40,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 215 transitions. [2022-07-22 22:09:40,384 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 215 transitions. Word has length 113 [2022-07-22 22:09:40,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:09:40,384 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 215 transitions. [2022-07-22 22:09:40,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.571428571428571) internal successors, (60), 7 states have internal predecessors, (60), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-22 22:09:40,384 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 215 transitions. [2022-07-22 22:09:40,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-22 22:09:40,385 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:09:40,386 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:09:40,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-22 22:09:40,386 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:09:40,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:09:40,386 INFO L85 PathProgramCache]: Analyzing trace with hash -1564998756, now seen corresponding path program 1 times [2022-07-22 22:09:40,386 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:09:40,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1112242496] [2022-07-22 22:09:40,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:40,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:09:40,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:40,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:09:40,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:40,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:09:40,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:40,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:09:40,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:40,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:40,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:40,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:09:40,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:40,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:09:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:40,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:09:40,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:40,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 22:09:40,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:40,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:09:40,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:40,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-22 22:09:40,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:40,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 22:09:40,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:40,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:40,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:40,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:40,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:40,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-22 22:09:40,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:40,861 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-22 22:09:40,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:40,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1112242496] [2022-07-22 22:09:40,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1112242496] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:09:40,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1466843275] [2022-07-22 22:09:40,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:40,863 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:09:40,863 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:09:40,868 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) [2022-07-22 22:09:40,870 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-22 22:09:41,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:41,297 INFO L263 TraceCheckSpWp]: Trace formula consists of 2680 conjuncts, 44 conjunts are in the unsatisfiable core [2022-07-22 22:09:41,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:09:41,570 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 19 treesize of output 7 [2022-07-22 22:09:41,573 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 19 treesize of output 7 [2022-07-22 22:09:41,593 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-22 22:09:41,594 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:09:41,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1466843275] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:09:41,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:09:41,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14] total 21 [2022-07-22 22:09:41,594 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045314383] [2022-07-22 22:09:41,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:09:41,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 22:09:41,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:09:41,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 22:09:41,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-07-22 22:09:41,595 INFO L87 Difference]: Start difference. First operand 166 states and 215 transitions. Second operand has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 3 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 22:09:41,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:09:41,897 INFO L93 Difference]: Finished difference Result 297 states and 376 transitions. [2022-07-22 22:09:41,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 22:09:41,898 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 3 states have call successors, (16), 3 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 [2022-07-22 22:09:41,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:09:41,899 INFO L225 Difference]: With dead ends: 297 [2022-07-22 22:09:41,900 INFO L226 Difference]: Without dead ends: 179 [2022-07-22 22:09:41,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2022-07-22 22:09:41,901 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 41 mSDsluCounter, 704 mSDsCounter, 0 mSdLazyCounter, 200 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 841 SdHoareTripleChecker+Invalid, 238 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 200 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 35 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-22 22:09:41,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 841 Invalid, 238 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 200 Invalid, 0 Unknown, 35 Unchecked, 0.2s Time] [2022-07-22 22:09:41,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-07-22 22:09:41,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 173. [2022-07-22 22:09:41,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 124 states have (on average 1.1290322580645162) internal successors, (140), 128 states have internal predecessors, (140), 31 states have call successors, (31), 14 states have call predecessors, (31), 17 states have return successors, (51), 30 states have call predecessors, (51), 30 states have call successors, (51) [2022-07-22 22:09:41,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 222 transitions. [2022-07-22 22:09:41,910 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 222 transitions. Word has length 129 [2022-07-22 22:09:41,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:09:41,910 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 222 transitions. [2022-07-22 22:09:41,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.222222222222221) internal successors, (83), 8 states have internal predecessors, (83), 3 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-22 22:09:41,911 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 222 transitions. [2022-07-22 22:09:41,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-22 22:09:41,912 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:09:41,912 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:09:41,938 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-22 22:09:42,127 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,SelfDestructingSolverStorable17 [2022-07-22 22:09:42,127 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:09:42,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:09:42,128 INFO L85 PathProgramCache]: Analyzing trace with hash -1883428766, now seen corresponding path program 2 times [2022-07-22 22:09:42,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:09:42,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276408362] [2022-07-22 22:09:42,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:42,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:09:42,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:42,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:09:42,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:42,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:09:42,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:42,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:09:42,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:42,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:42,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:42,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:09:42,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:42,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:09:42,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:42,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:09:42,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:42,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 22:09:42,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:42,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:09:42,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:42,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-22 22:09:42,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:42,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-22 22:09:42,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:42,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:42,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:42,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:42,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-22 22:09:42,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:42,430 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-22 22:09:42,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:42,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [276408362] [2022-07-22 22:09:42,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [276408362] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:09:42,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275349518] [2022-07-22 22:09:42,431 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 22:09:42,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:09:42,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:09:42,432 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) [2022-07-22 22:09:42,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-22 22:09:42,862 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 22:09:42,862 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:09:42,870 INFO L263 TraceCheckSpWp]: Trace formula consists of 2687 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-22 22:09:42,874 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:09:42,924 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-07-22 22:09:42,925 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:09:42,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [275349518] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:09:42,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:09:42,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 12 [2022-07-22 22:09:42,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356860854] [2022-07-22 22:09:42,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:09:42,927 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 22:09:42,927 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:09:42,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 22:09:42,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-07-22 22:09:42,928 INFO L87 Difference]: Start difference. First operand 173 states and 222 transitions. Second operand has 9 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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) [2022-07-22 22:09:43,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:09:43,056 INFO L93 Difference]: Finished difference Result 303 states and 384 transitions. [2022-07-22 22:09:43,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 22:09:43,057 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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 133 [2022-07-22 22:09:43,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:09:43,060 INFO L225 Difference]: With dead ends: 303 [2022-07-22 22:09:43,060 INFO L226 Difference]: Without dead ends: 173 [2022-07-22 22:09:43,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 158 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:09:43,062 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 12 mSDsluCounter, 905 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1042 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:09:43,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1042 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:09:43,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-07-22 22:09:43,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2022-07-22 22:09:43,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 124 states have (on average 1.1290322580645162) internal successors, (140), 128 states have internal predecessors, (140), 31 states have call successors, (31), 14 states have call predecessors, (31), 17 states have return successors, (49), 30 states have call predecessors, (49), 30 states have call successors, (49) [2022-07-22 22:09:43,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 220 transitions. [2022-07-22 22:09:43,070 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 220 transitions. Word has length 133 [2022-07-22 22:09:43,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:09:43,070 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 220 transitions. [2022-07-22 22:09:43,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.875) internal successors, (79), 8 states have internal predecessors, (79), 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) [2022-07-22 22:09:43,071 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 220 transitions. [2022-07-22 22:09:43,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-22 22:09:43,072 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:09:43,072 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:09:43,103 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2022-07-22 22:09:43,303 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:09:43,303 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:09:43,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:09:43,304 INFO L85 PathProgramCache]: Analyzing trace with hash 37904781, now seen corresponding path program 3 times [2022-07-22 22:09:43,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:09:43,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981513930] [2022-07-22 22:09:43,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:43,304 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:09:43,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:43,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:09:43,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:43,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:09:43,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:43,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:09:43,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:43,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:43,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:43,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:09:43,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:43,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:09:43,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:43,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:09:43,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:43,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-22 22:09:43,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:43,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-22 22:09:43,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:43,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-22 22:09:43,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:43,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 22:09:43,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:43,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:43,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:43,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:43,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:43,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-22 22:09:43,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:43,813 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-07-22 22:09:43,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:43,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981513930] [2022-07-22 22:09:43,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981513930] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:09:43,814 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2054960617] [2022-07-22 22:09:43,814 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 22:09:43,814 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:09:43,814 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:09:43,815 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) [2022-07-22 22:09:43,817 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-22 22:09:44,247 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-22 22:09:44,247 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:09:44,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 2496 conjuncts, 37 conjunts are in the unsatisfiable core [2022-07-22 22:09:44,257 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:09:44,696 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 25 treesize of output 13 [2022-07-22 22:09:44,699 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 83 proven. 4 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-07-22 22:09:44,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:09:45,071 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-22 22:09:45,072 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 24 treesize of output 19 [2022-07-22 22:09:45,099 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 26 proven. 14 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-22 22:09:45,099 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2054960617] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:09:45,100 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 22:09:45,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 11] total 32 [2022-07-22 22:09:45,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [715881444] [2022-07-22 22:09:45,100 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 22:09:45,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-22 22:09:45,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:09:45,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-22 22:09:45,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=898, Unknown=0, NotChecked=0, Total=992 [2022-07-22 22:09:45,102 INFO L87 Difference]: Start difference. First operand 173 states and 220 transitions. Second operand has 32 states, 27 states have (on average 4.962962962962963) internal successors, (134), 28 states have internal predecessors, (134), 13 states have call successors, (34), 6 states have call predecessors, (34), 10 states have return successors, (31), 11 states have call predecessors, (31), 13 states have call successors, (31) [2022-07-22 22:09:47,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:09:47,206 INFO L93 Difference]: Finished difference Result 348 states and 438 transitions. [2022-07-22 22:09:47,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-22 22:09:47,207 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 27 states have (on average 4.962962962962963) internal successors, (134), 28 states have internal predecessors, (134), 13 states have call successors, (34), 6 states have call predecessors, (34), 10 states have return successors, (31), 11 states have call predecessors, (31), 13 states have call successors, (31) Word has length 135 [2022-07-22 22:09:47,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:09:47,208 INFO L225 Difference]: With dead ends: 348 [2022-07-22 22:09:47,209 INFO L226 Difference]: Without dead ends: 200 [2022-07-22 22:09:47,210 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 282 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=335, Invalid=2745, Unknown=0, NotChecked=0, Total=3080 [2022-07-22 22:09:47,210 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 305 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 2145 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 320 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 2441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 2145 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 187 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 22:09:47,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 658 Invalid, 2441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 2145 Invalid, 0 Unknown, 187 Unchecked, 1.4s Time] [2022-07-22 22:09:47,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-07-22 22:09:47,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 179. [2022-07-22 22:09:47,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 128 states have (on average 1.1171875) internal successors, (143), 133 states have internal predecessors, (143), 32 states have call successors, (32), 15 states have call predecessors, (32), 18 states have return successors, (49), 30 states have call predecessors, (49), 31 states have call successors, (49) [2022-07-22 22:09:47,221 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 224 transitions. [2022-07-22 22:09:47,221 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 224 transitions. Word has length 135 [2022-07-22 22:09:47,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:09:47,221 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 224 transitions. [2022-07-22 22:09:47,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 27 states have (on average 4.962962962962963) internal successors, (134), 28 states have internal predecessors, (134), 13 states have call successors, (34), 6 states have call predecessors, (34), 10 states have return successors, (31), 11 states have call predecessors, (31), 13 states have call successors, (31) [2022-07-22 22:09:47,222 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 224 transitions. [2022-07-22 22:09:47,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-22 22:09:47,223 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:09:47,223 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-22 22:09:47,255 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-22 22:09:47,449 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:09:47,449 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:09:47,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:09:47,450 INFO L85 PathProgramCache]: Analyzing trace with hash -1637817810, now seen corresponding path program 1 times [2022-07-22 22:09:47,450 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:09:47,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [291835542] [2022-07-22 22:09:47,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:47,450 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:09:47,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:47,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:09:47,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:47,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:09:47,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:47,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:09:47,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:47,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:47,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:47,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:09:47,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:47,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:09:47,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:47,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:09:47,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:47,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 22:09:47,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:47,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 22:09:47,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:47,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 22:09:47,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:47,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 22:09:47,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:47,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:47,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:47,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:47,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:47,673 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 22:09:47,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:47,682 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-07-22 22:09:47,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:47,682 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [291835542] [2022-07-22 22:09:47,682 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [291835542] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:09:47,682 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:09:47,682 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 22:09:47,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230177721] [2022-07-22 22:09:47,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:09:47,692 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 22:09:47,692 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:09:47,692 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 22:09:47,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:09:47,692 INFO L87 Difference]: Start difference. First operand 179 states and 224 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-22 22:09:48,004 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:09:48,004 INFO L93 Difference]: Finished difference Result 293 states and 362 transitions. [2022-07-22 22:09:48,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 22:09:48,004 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (16), 4 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 140 [2022-07-22 22:09:48,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:09:48,006 INFO L225 Difference]: With dead ends: 293 [2022-07-22 22:09:48,006 INFO L226 Difference]: Without dead ends: 183 [2022-07-22 22:09:48,006 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-22 22:09:48,007 INFO L413 NwaCegarLoop]: 121 mSDtfsCounter, 109 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 196 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-22 22:09:48,007 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 203 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-22 22:09:48,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-07-22 22:09:48,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 180. [2022-07-22 22:09:48,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 129 states have (on average 1.1162790697674418) internal successors, (144), 134 states have internal predecessors, (144), 32 states have call successors, (32), 15 states have call predecessors, (32), 18 states have return successors, (49), 30 states have call predecessors, (49), 31 states have call successors, (49) [2022-07-22 22:09:48,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 225 transitions. [2022-07-22 22:09:48,016 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 225 transitions. Word has length 140 [2022-07-22 22:09:48,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:09:48,017 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 225 transitions. [2022-07-22 22:09:48,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 3 states have internal predecessors, (55), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-22 22:09:48,017 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 225 transitions. [2022-07-22 22:09:48,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-22 22:09:48,018 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:09:48,019 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-22 22:09:48,019 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-22 22:09:48,019 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:09:48,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:09:48,019 INFO L85 PathProgramCache]: Analyzing trace with hash 347561328, now seen corresponding path program 1 times [2022-07-22 22:09:48,019 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:09:48,019 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335248911] [2022-07-22 22:09:48,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:48,020 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:09:48,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:48,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:09:48,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:48,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:09:48,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:48,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:09:48,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:48,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:48,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:48,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:09:48,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:48,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:09:48,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:48,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:09:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:48,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 22:09:48,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:48,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-22 22:09:48,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:48,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-22 22:09:48,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:48,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-22 22:09:48,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:48,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:48,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:48,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:48,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:48,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-22 22:09:48,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:48,334 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-07-22 22:09:48,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:48,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335248911] [2022-07-22 22:09:48,334 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335248911] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:09:48,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [738860489] [2022-07-22 22:09:48,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:48,335 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:09:48,335 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:09:48,336 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) [2022-07-22 22:09:48,337 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-22 22:09:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:48,739 INFO L263 TraceCheckSpWp]: Trace formula consists of 2722 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-22 22:09:48,741 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:09:48,777 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-22 22:09:48,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:09:48,777 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [738860489] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:09:48,777 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:09:48,777 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 12 [2022-07-22 22:09:48,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040318581] [2022-07-22 22:09:48,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:09:48,778 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-22 22:09:48,778 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:09:48,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-22 22:09:48,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-07-22 22:09:48,778 INFO L87 Difference]: Start difference. First operand 180 states and 225 transitions. Second operand has 9 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (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) [2022-07-22 22:09:48,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:09:48,900 INFO L93 Difference]: Finished difference Result 332 states and 412 transitions. [2022-07-22 22:09:48,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-22 22:09:48,901 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (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 142 [2022-07-22 22:09:48,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:09:48,902 INFO L225 Difference]: With dead ends: 332 [2022-07-22 22:09:48,902 INFO L226 Difference]: Without dead ends: 180 [2022-07-22 22:09:48,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 167 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=173, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:09:48,904 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 12 mSDsluCounter, 881 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1014 SdHoareTripleChecker+Invalid, 141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-22 22:09:48,904 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1014 Invalid, 141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-22 22:09:48,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-07-22 22:09:48,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2022-07-22 22:09:48,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 129 states have (on average 1.1162790697674418) internal successors, (144), 134 states have internal predecessors, (144), 32 states have call successors, (32), 15 states have call predecessors, (32), 18 states have return successors, (47), 30 states have call predecessors, (47), 31 states have call successors, (47) [2022-07-22 22:09:48,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 223 transitions. [2022-07-22 22:09:48,914 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 223 transitions. Word has length 142 [2022-07-22 22:09:48,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:09:48,914 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 223 transitions. [2022-07-22 22:09:48,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.875) internal successors, (87), 8 states have internal predecessors, (87), 3 states have call successors, (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) [2022-07-22 22:09:48,914 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 223 transitions. [2022-07-22 22:09:48,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-22 22:09:48,916 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:09:48,916 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:09:48,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-22 22:09:49,131 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,SelfDestructingSolverStorable21 [2022-07-22 22:09:49,131 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:09:49,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:09:49,132 INFO L85 PathProgramCache]: Analyzing trace with hash -1353114459, now seen corresponding path program 2 times [2022-07-22 22:09:49,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:09:49,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [656549433] [2022-07-22 22:09:49,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:09:49,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:09:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:49,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:09:49,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:50,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:09:50,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:50,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:09:50,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:50,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:50,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:50,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:09:50,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:50,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:09:50,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:50,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:09:50,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:50,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 22:09:50,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:50,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:09:50,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:50,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 22:09:50,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:50,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 22:09:50,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:50,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:50,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:09:50,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:50,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-22 22:09:50,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:09:50,618 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-07-22 22:09:50,618 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:09:50,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [656549433] [2022-07-22 22:09:50,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [656549433] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:09:50,618 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1445062997] [2022-07-22 22:09:50,618 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 22:09:50,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:09:50,619 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:09:50,624 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) [2022-07-22 22:09:50,625 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-22 22:09:51,661 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 22:09:51,661 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:09:51,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 2724 conjuncts, 104 conjunts are in the unsatisfiable core [2022-07-22 22:09:51,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:09:51,680 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 [2022-07-22 22:09:51,843 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-22 22:09:51,843 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 11 treesize of output 11 [2022-07-22 22:09:51,888 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 [2022-07-22 22:09:53,924 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base_BEFORE_CALL_21| Int)) (not (= |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base_BEFORE_CALL_21| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base_BEFORE_CALL_21|) 8)))) is different from true [2022-07-22 22:10:53,970 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_aws_byte_buf_secure_zero_~buf#1.base_BEFORE_CALL_11| Int)) (and (not (= |v_aws_byte_buf_secure_zero_~buf#1.base_BEFORE_CALL_11| (select (select |c_#memory_$Pointer$.base| |v_aws_byte_buf_secure_zero_~buf#1.base_BEFORE_CALL_11|) 8))) (not (= (mod (select (select |c_#memory_int| |v_aws_byte_buf_secure_zero_~buf#1.base_BEFORE_CALL_11|) 16) 18446744073709551616) 0)))) is different from true [2022-07-22 22:11:11,173 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 22:11:11,174 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 8 [2022-07-22 22:11:13,475 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1156 (Array Int Int))) (= (store |c_old(#memory_int)| |c_memset_impl_#in~s.base| v_ArrVal_1156) |c_#memory_int|)) is different from true [2022-07-22 22:11:13,487 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1156 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_my_memset_#in~s.base| v_ArrVal_1156))) is different from true [2022-07-22 22:11:13,497 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 17 treesize of output 19 [2022-07-22 22:11:13,522 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:11:13,523 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 35 treesize of output 28 [2022-07-22 22:11:19,931 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 12 proven. 75 refuted. 2 times theorem prover too weak. 16 trivial. 52 not checked. [2022-07-22 22:11:19,932 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:11:20,314 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1164 (Array Int Int))) (not (<= (mod (select (select (store |c_#memory_int| |c_aws_byte_buf_secure_zero_aws_secure_zero_~pBuf#1.base| v_ArrVal_1164) |c_aws_byte_buf_secure_zero_~buf#1.base|) (+ 16 |c_aws_byte_buf_secure_zero_~buf#1.offset|)) 18446744073709551616) 0))) is different from false [2022-07-22 22:11:20,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1445062997] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:11:20,316 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 22:11:20,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 31] total 50 [2022-07-22 22:11:20,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1520447159] [2022-07-22 22:11:20,316 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 22:11:20,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-07-22 22:11:20,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:11:20,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-07-22 22:11:20,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=2186, Unknown=24, NotChecked=490, Total=2862 [2022-07-22 22:11:20,319 INFO L87 Difference]: Start difference. First operand 180 states and 223 transitions. Second operand has 50 states, 47 states have (on average 3.3404255319148937) internal successors, (157), 40 states have internal predecessors, (157), 17 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (27), 17 states have call predecessors, (27), 16 states have call successors, (27) [2022-07-22 22:12:29,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:12:29,155 INFO L93 Difference]: Finished difference Result 421 states and 525 transitions. [2022-07-22 22:12:29,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 54 states. [2022-07-22 22:12:29,155 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 47 states have (on average 3.3404255319148937) internal successors, (157), 40 states have internal predecessors, (157), 17 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (27), 17 states have call predecessors, (27), 16 states have call successors, (27) Word has length 144 [2022-07-22 22:12:29,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:12:29,157 INFO L225 Difference]: With dead ends: 421 [2022-07-22 22:12:29,157 INFO L226 Difference]: Without dead ends: 292 [2022-07-22 22:12:29,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 269 GetRequests, 162 SyntacticMatches, 17 SemanticMatches, 90 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 1791 ImplicationChecksByTransitivity, 155.2s TimeCoverageRelationStatistics Valid=526, Invalid=6921, Unknown=55, NotChecked=870, Total=8372 [2022-07-22 22:12:29,160 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 273 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 2551 mSolverCounterSat, 259 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 1440 SdHoareTripleChecker+Invalid, 4846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 259 IncrementalHoareTripleChecker+Valid, 2551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2036 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-22 22:12:29,160 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 1440 Invalid, 4846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [259 Valid, 2551 Invalid, 0 Unknown, 2036 Unchecked, 1.8s Time] [2022-07-22 22:12:29,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 292 states. [2022-07-22 22:12:29,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 292 to 271. [2022-07-22 22:12:29,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 199 states have (on average 1.1055276381909547) internal successors, (220), 205 states have internal predecessors, (220), 44 states have call successors, (44), 21 states have call predecessors, (44), 27 states have return successors, (67), 44 states have call predecessors, (67), 43 states have call successors, (67) [2022-07-22 22:12:29,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 331 transitions. [2022-07-22 22:12:29,176 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 331 transitions. Word has length 144 [2022-07-22 22:12:29,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:12:29,176 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 331 transitions. [2022-07-22 22:12:29,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 47 states have (on average 3.3404255319148937) internal successors, (157), 40 states have internal predecessors, (157), 17 states have call successors, (30), 13 states have call predecessors, (30), 13 states have return successors, (27), 17 states have call predecessors, (27), 16 states have call successors, (27) [2022-07-22 22:12:29,176 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 331 transitions. [2022-07-22 22:12:29,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-22 22:12:29,178 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:12:29,178 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:12:29,206 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-22 22:12:29,403 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:12:29,404 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:12:29,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:12:29,404 INFO L85 PathProgramCache]: Analyzing trace with hash 1485411045, now seen corresponding path program 1 times [2022-07-22 22:12:29,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:12:29,404 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474693016] [2022-07-22 22:12:29,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:12:29,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:12:29,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:29,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:12:29,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:29,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:12:29,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:29,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:12:29,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:29,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:12:29,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:29,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:12:29,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:29,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:12:29,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:29,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:12:29,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:29,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 22:12:29,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:29,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:12:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:29,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 22:12:29,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:29,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 22:12:29,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:29,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:12:29,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:29,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:12:29,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:29,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-22 22:12:29,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:29,907 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-07-22 22:12:29,907 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:12:29,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474693016] [2022-07-22 22:12:29,907 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474693016] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:12:29,907 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665592475] [2022-07-22 22:12:29,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:12:29,908 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:12:29,908 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:12:29,909 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) [2022-07-22 22:12:29,910 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-22 22:12:30,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:30,405 INFO L263 TraceCheckSpWp]: Trace formula consists of 2748 conjuncts, 46 conjunts are in the unsatisfiable core [2022-07-22 22:12:30,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:12:30,905 INFO L356 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-07-22 22:12:30,905 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 49 treesize of output 1 [2022-07-22 22:12:30,908 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 119 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-22 22:12:30,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:12:31,151 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 [2022-07-22 22:12:31,185 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-22 22:12:31,185 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 [2022-07-22 22:12:31,229 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-22 22:12:31,229 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665592475] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:12:31,229 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 22:12:31,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 10] total 23 [2022-07-22 22:12:31,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586044673] [2022-07-22 22:12:31,230 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 22:12:31,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-22 22:12:31,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:12:31,231 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-22 22:12:31,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2022-07-22 22:12:31,232 INFO L87 Difference]: Start difference. First operand 271 states and 331 transitions. Second operand has 23 states, 21 states have (on average 7.571428571428571) internal successors, (159), 19 states have internal predecessors, (159), 7 states have call successors, (32), 5 states have call predecessors, (32), 6 states have return successors, (27), 5 states have call predecessors, (27), 7 states have call successors, (27) [2022-07-22 22:12:32,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:12:32,582 INFO L93 Difference]: Finished difference Result 478 states and 577 transitions. [2022-07-22 22:12:32,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-07-22 22:12:32,582 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 21 states have (on average 7.571428571428571) internal successors, (159), 19 states have internal predecessors, (159), 7 states have call successors, (32), 5 states have call predecessors, (32), 6 states have return successors, (27), 5 states have call predecessors, (27), 7 states have call successors, (27) Word has length 146 [2022-07-22 22:12:32,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:12:32,585 INFO L225 Difference]: With dead ends: 478 [2022-07-22 22:12:32,585 INFO L226 Difference]: Without dead ends: 293 [2022-07-22 22:12:32,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 309 SyntacticMatches, 6 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=244, Invalid=1088, Unknown=0, NotChecked=0, Total=1332 [2022-07-22 22:12:32,586 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 202 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 1273 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 564 SdHoareTripleChecker+Invalid, 1650 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 1273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 276 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 22:12:32,586 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 564 Invalid, 1650 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 1273 Invalid, 0 Unknown, 276 Unchecked, 0.9s Time] [2022-07-22 22:12:32,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2022-07-22 22:12:32,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 286. [2022-07-22 22:12:32,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 286 states, 213 states have (on average 1.1032863849765258) internal successors, (235), 218 states have internal predecessors, (235), 44 states have call successors, (44), 23 states have call predecessors, (44), 28 states have return successors, (66), 44 states have call predecessors, (66), 43 states have call successors, (66) [2022-07-22 22:12:32,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 286 states to 286 states and 345 transitions. [2022-07-22 22:12:32,601 INFO L78 Accepts]: Start accepts. Automaton has 286 states and 345 transitions. Word has length 146 [2022-07-22 22:12:32,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:12:32,601 INFO L495 AbstractCegarLoop]: Abstraction has 286 states and 345 transitions. [2022-07-22 22:12:32,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 21 states have (on average 7.571428571428571) internal successors, (159), 19 states have internal predecessors, (159), 7 states have call successors, (32), 5 states have call predecessors, (32), 6 states have return successors, (27), 5 states have call predecessors, (27), 7 states have call successors, (27) [2022-07-22 22:12:32,601 INFO L276 IsEmpty]: Start isEmpty. Operand 286 states and 345 transitions. [2022-07-22 22:12:32,603 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-22 22:12:32,603 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:12:32,603 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:12:32,630 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-22 22:12:32,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:12:32,825 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:12:32,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:12:32,826 INFO L85 PathProgramCache]: Analyzing trace with hash 1391376613, now seen corresponding path program 2 times [2022-07-22 22:12:32,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:12:32,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718343316] [2022-07-22 22:12:32,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:12:32,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:12:32,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:33,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:12:33,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:33,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:12:33,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:33,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:12:33,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:33,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:12:33,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:33,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:12:33,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:33,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:12:33,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:33,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:12:33,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:33,238 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 22:12:33,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:33,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:12:33,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:33,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 22:12:33,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:33,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 22:12:33,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:33,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:12:33,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:33,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:12:33,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:33,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-22 22:12:33,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:33,304 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-07-22 22:12:33,305 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:12:33,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718343316] [2022-07-22 22:12:33,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718343316] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:12:33,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [153060522] [2022-07-22 22:12:33,305 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 22:12:33,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:12:33,306 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:12:33,308 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) [2022-07-22 22:12:33,309 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-22 22:12:34,734 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 22:12:34,734 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:12:34,743 INFO L263 TraceCheckSpWp]: Trace formula consists of 2748 conjuncts, 48 conjunts are in the unsatisfiable core [2022-07-22 22:12:34,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:12:35,526 INFO L356 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-07-22 22:12:35,527 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 52 treesize of output 1 [2022-07-22 22:12:35,529 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 121 proven. 22 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-22 22:12:35,529 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:12:35,800 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 [2022-07-22 22:12:35,856 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-22 22:12:35,856 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 [2022-07-22 22:12:35,888 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 16 proven. 60 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-22 22:12:35,888 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [153060522] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:12:35,888 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-22 22:12:35,888 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 12] total 27 [2022-07-22 22:12:35,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129047176] [2022-07-22 22:12:35,889 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-22 22:12:35,889 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-22 22:12:35,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:12:35,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-22 22:12:35,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2022-07-22 22:12:35,890 INFO L87 Difference]: Start difference. First operand 286 states and 345 transitions. Second operand has 27 states, 25 states have (on average 6.92) internal successors, (173), 21 states have internal predecessors, (173), 9 states have call successors, (36), 7 states have call predecessors, (36), 6 states have return successors, (30), 7 states have call predecessors, (30), 9 states have call successors, (30) [2022-07-22 22:12:38,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:12:38,224 INFO L93 Difference]: Finished difference Result 564 states and 697 transitions. [2022-07-22 22:12:38,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-22 22:12:38,224 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 6.92) internal successors, (173), 21 states have internal predecessors, (173), 9 states have call successors, (36), 7 states have call predecessors, (36), 6 states have return successors, (30), 7 states have call predecessors, (30), 9 states have call successors, (30) Word has length 146 [2022-07-22 22:12:38,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:12:38,226 INFO L225 Difference]: With dead ends: 564 [2022-07-22 22:12:38,226 INFO L226 Difference]: Without dead ends: 358 [2022-07-22 22:12:38,228 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 309 SyntacticMatches, 11 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 393 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=284, Invalid=1608, Unknown=0, NotChecked=0, Total=1892 [2022-07-22 22:12:38,228 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 240 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 2805 mSolverCounterSat, 138 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 771 SdHoareTripleChecker+Invalid, 3421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 138 IncrementalHoareTripleChecker+Valid, 2805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 478 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-22 22:12:38,228 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 771 Invalid, 3421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [138 Valid, 2805 Invalid, 0 Unknown, 478 Unchecked, 1.7s Time] [2022-07-22 22:12:38,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-07-22 22:12:38,244 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 309. [2022-07-22 22:12:38,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 309 states, 234 states have (on average 1.0982905982905984) internal successors, (257), 239 states have internal predecessors, (257), 44 states have call successors, (44), 25 states have call predecessors, (44), 30 states have return successors, (64), 44 states have call predecessors, (64), 43 states have call successors, (64) [2022-07-22 22:12:38,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 309 states to 309 states and 365 transitions. [2022-07-22 22:12:38,252 INFO L78 Accepts]: Start accepts. Automaton has 309 states and 365 transitions. Word has length 146 [2022-07-22 22:12:38,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:12:38,252 INFO L495 AbstractCegarLoop]: Abstraction has 309 states and 365 transitions. [2022-07-22 22:12:38,253 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 6.92) internal successors, (173), 21 states have internal predecessors, (173), 9 states have call successors, (36), 7 states have call predecessors, (36), 6 states have return successors, (30), 7 states have call predecessors, (30), 9 states have call successors, (30) [2022-07-22 22:12:38,253 INFO L276 IsEmpty]: Start isEmpty. Operand 309 states and 365 transitions. [2022-07-22 22:12:38,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-22 22:12:38,260 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:12:38,260 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:12:38,293 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-22 22:12:38,479 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,SelfDestructingSolverStorable24 [2022-07-22 22:12:38,479 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:12:38,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:12:38,480 INFO L85 PathProgramCache]: Analyzing trace with hash -54025247, now seen corresponding path program 1 times [2022-07-22 22:12:38,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:12:38,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [449281503] [2022-07-22 22:12:38,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:12:38,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:12:39,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:39,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:12:39,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:39,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:12:39,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:39,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-22 22:12:39,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:39,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:12:39,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:39,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-22 22:12:39,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:39,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-22 22:12:39,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:39,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-22 22:12:39,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:39,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-22 22:12:39,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:39,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-22 22:12:39,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:39,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-22 22:12:39,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:39,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 22:12:39,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:40,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:12:40,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:42,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-22 22:12:42,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:42,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-22 22:12:42,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:42,479 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 29 proven. 49 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-22 22:12:42,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:12:42,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [449281503] [2022-07-22 22:12:42,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [449281503] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:12:42,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1760812131] [2022-07-22 22:12:42,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:12:42,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:12:42,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:12:42,482 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) [2022-07-22 22:12:42,504 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-22 22:12:42,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:42,916 INFO L263 TraceCheckSpWp]: Trace formula consists of 2758 conjuncts, 98 conjunts are in the unsatisfiable core [2022-07-22 22:12:42,925 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:12:43,112 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 [2022-07-22 22:12:45,158 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base_BEFORE_CALL_32| Int)) (< (+ (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base_BEFORE_CALL_32|) 8) 1) |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base_BEFORE_CALL_32|)) is different from true [2022-07-22 22:12:47,263 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base_BEFORE_CALL_33| Int)) (< (+ (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base_BEFORE_CALL_33|) 8) 1) |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base_BEFORE_CALL_33|)) is different from true [2022-07-22 22:12:49,393 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base_BEFORE_CALL_16| Int)) (< (+ (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base_BEFORE_CALL_16|) 8) 1) |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base_BEFORE_CALL_16|)) is different from true [2022-07-22 22:12:51,491 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base_BEFORE_CALL_17| Int)) (< (+ (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base_BEFORE_CALL_17|) 8) 1) |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base_BEFORE_CALL_17|)) is different from true [2022-07-22 22:12:53,653 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_aws_byte_buf_secure_zero_~buf#1.base_BEFORE_CALL_18| Int)) (< (+ (select (select |c_#memory_$Pointer$.base| |v_aws_byte_buf_secure_zero_~buf#1.base_BEFORE_CALL_18|) 8) 1) |v_aws_byte_buf_secure_zero_~buf#1.base_BEFORE_CALL_18|)) is different from true