./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 6c24879c 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-?-6c24879 [2022-07-12 10:52:26,209 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:52:26,211 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:52:26,254 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:52:26,255 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:52:26,256 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:52:26,257 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:52:26,259 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:52:26,260 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:52:26,262 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:52:26,263 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:52:26,265 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:52:26,265 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:52:26,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:52:26,274 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:52:26,276 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:52:26,277 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:52:26,278 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:52:26,279 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:52:26,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:52:26,285 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:52:26,285 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:52:26,286 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:52:26,286 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:52:26,287 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:52:26,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:52:26,293 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:52:26,293 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:52:26,294 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:52:26,294 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:52:26,295 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:52:26,295 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:52:26,296 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:52:26,296 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:52:26,297 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:52:26,297 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:52:26,298 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:52:26,299 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:52:26,299 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:52:26,299 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:52:26,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:52:26,301 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:52:26,302 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 10:52:26,322 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:52:26,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:52:26,323 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:52:26,323 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:52:26,324 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:52:26,324 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:52:26,324 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:52:26,324 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:52:26,324 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:52:26,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:52:26,325 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:52:26,325 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:52:26,325 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:52:26,326 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:52:26,326 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:52:26,326 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:52:26,326 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:52:26,326 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:52:26,326 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:52:26,326 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:52:26,328 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:52:26,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:52:26,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:52:26,328 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:52:26,328 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:52:26,328 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:52:26,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:52:26,329 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:52:26,329 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:52:26,329 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:52:26,329 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e401a4e4197b43467958a92870f8195ba22195c146137fa78352c627ea2eeb40 [2022-07-12 10:52:26,520 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:52:26,543 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:52:26,544 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:52:26,545 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:52:26,545 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:52:26,548 INFO L432 ainManager$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 [2022-07-12 10:52:26,583 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/798cfdab5/96cdb7fa69a14a1989165b9cebb99ac2/FLAGb606f1c4c [2022-07-12 10:52:27,228 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:52:27,229 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_clean_up_secure_harness.i [2022-07-12 10:52:27,264 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/798cfdab5/96cdb7fa69a14a1989165b9cebb99ac2/FLAGb606f1c4c [2022-07-12 10:52:27,597 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/798cfdab5/96cdb7fa69a14a1989165b9cebb99ac2 [2022-07-12 10:52:27,598 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:52:27,599 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:52:27,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:52:27,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:52:27,603 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:52:27,604 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:52:27" (1/1) ... [2022-07-12 10:52:27,605 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7975a926 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:52:27, skipping insertion in model container [2022-07-12 10:52:27,605 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:52:27" (1/1) ... [2022-07-12 10:52:27,609 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:52:27,680 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:52:27,824 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] [2022-07-12 10:52:27,828 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] [2022-07-12 10:52:28,298 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:28,298 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:28,299 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:28,299 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:28,301 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:28,308 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:28,312 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:28,315 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:28,315 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:28,499 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 10:52:28,500 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 10:52:28,500 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 10:52:28,501 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 10:52:28,502 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 10:52:28,502 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 10:52:28,503 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 10:52:28,503 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 10:52:28,503 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 10:52:28,504 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 10:52:28,609 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 10:52:28,652 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:28,652 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:28,704 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:52:28,759 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:52:28,777 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] [2022-07-12 10:52:28,779 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] [2022-07-12 10:52:28,816 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:28,816 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:28,819 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:28,820 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:28,820 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:28,826 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:28,827 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:28,828 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:28,828 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:28,869 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 10:52:28,870 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 10:52:28,871 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 10:52:28,871 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 10:52:28,872 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 10:52:28,872 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 10:52:28,872 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 10:52:28,872 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 10:52:28,873 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 10:52:28,873 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 10:52:28,894 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 10:52:28,935 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:28,935 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:52:28,962 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:52:29,100 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:52:29,101 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:52:29 WrapperNode [2022-07-12 10:52:29,101 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:52:29,102 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:52:29,102 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:52:29,102 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:52:29,106 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:52:29" (1/1) ... [2022-07-12 10:52:29,169 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:52:29" (1/1) ... [2022-07-12 10:52:29,222 INFO L137 Inliner]: procedures = 691, calls = 2504, calls flagged for inlining = 56, calls inlined = 8, statements flattened = 817 [2022-07-12 10:52:29,223 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:52:29,224 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:52:29,224 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:52:29,224 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:52:29,230 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:52:29" (1/1) ... [2022-07-12 10:52:29,230 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:52:29" (1/1) ... [2022-07-12 10:52:29,242 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:52:29" (1/1) ... [2022-07-12 10:52:29,242 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:52:29" (1/1) ... [2022-07-12 10:52:29,271 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:52:29" (1/1) ... [2022-07-12 10:52:29,275 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:52:29" (1/1) ... [2022-07-12 10:52:29,278 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:52:29" (1/1) ... [2022-07-12 10:52:29,284 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:52:29,284 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:52:29,284 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:52:29,284 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:52:29,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:52:29" (1/1) ... [2022-07-12 10:52:29,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:52:29,298 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:52:29,307 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) [2022-07-12 10:52:29,344 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 [2022-07-12 10:52:29,393 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-07-12 10:52:29,393 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-07-12 10:52:29,393 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:52:29,394 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-12 10:52:29,394 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-12 10:52:29,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:52:29,394 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 10:52:29,394 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 10:52:29,395 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_secure_zero [2022-07-12 10:52:29,395 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_secure_zero [2022-07-12 10:52:29,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 10:52:29,396 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:52:29,396 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 10:52:29,396 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:52:29,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:52:29,397 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-12 10:52:29,397 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-12 10:52:29,397 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_release [2022-07-12 10:52:29,397 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_release [2022-07-12 10:52:29,397 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 10:52:29,397 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 10:52:29,397 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:52:29,398 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 10:52:29,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 10:52:29,398 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-12 10:52:29,398 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-12 10:52:29,398 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:52:29,398 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2022-07-12 10:52:29,398 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2022-07-12 10:52:29,399 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2022-07-12 10:52:29,399 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2022-07-12 10:52:29,400 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:52:29,595 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:52:29,596 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:52:30,289 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:52:30,296 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:52:30,296 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 10:52:30,298 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:52:30 BoogieIcfgContainer [2022-07-12 10:52:30,298 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:52:30,300 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:52:30,300 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:52:30,302 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:52:30,302 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:52:27" (1/3) ... [2022-07-12 10:52:30,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@171afd5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:52:30, skipping insertion in model container [2022-07-12 10:52:30,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:52:29" (2/3) ... [2022-07-12 10:52:30,303 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@171afd5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:52:30, skipping insertion in model container [2022-07-12 10:52:30,303 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:52:30" (3/3) ... [2022-07-12 10:52:30,304 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_clean_up_secure_harness.i [2022-07-12 10:52:30,314 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:52:30,314 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:52:30,363 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:52:30,370 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@37f35541, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5bf78fff [2022-07-12 10:52:30,370 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 10:52:30,373 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) [2022-07-12 10:52:30,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-12 10:52:30,383 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:30,384 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] [2022-07-12 10:52:30,384 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:30,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:30,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1424840205, now seen corresponding path program 1 times [2022-07-12 10:52:30,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:30,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694759210] [2022-07-12 10:52:30,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:30,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:30,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:30,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:52:30,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:30,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:52:30,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:30,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:52:30,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:30,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:30,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:30,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:52:30,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:30,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:52:30,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:30,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:52:30,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:30,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:52:30,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:30,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:52:30,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:30,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 10:52:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:30,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 10:52:30,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:30,868 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-12 10:52:30,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:30,869 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694759210] [2022-07-12 10:52:30,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694759210] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:30,870 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:52:30,870 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:52:30,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476181467] [2022-07-12 10:52:30,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:30,874 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:52:30,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:30,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:52:30,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:52:30,892 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) [2022-07-12 10:52:31,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:31,100 INFO L93 Difference]: Finished difference Result 236 states and 323 transitions. [2022-07-12 10:52:31,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:52:31,102 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 [2022-07-12 10:52:31,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:31,115 INFO L225 Difference]: With dead ends: 236 [2022-07-12 10:52:31,115 INFO L226 Difference]: Without dead ends: 116 [2022-07-12 10:52:31,121 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 [2022-07-12 10:52:31,126 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, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:52:31,127 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 170 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [28 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 10:52:31,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-07-12 10:52:31,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 114. [2022-07-12 10:52:31,165 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) [2022-07-12 10:52:31,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 145 transitions. [2022-07-12 10:52:31,170 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 145 transitions. Word has length 77 [2022-07-12 10:52:31,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:31,170 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 145 transitions. [2022-07-12 10:52:31,171 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) [2022-07-12 10:52:31,171 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 145 transitions. [2022-07-12 10:52:31,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-07-12 10:52:31,178 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:31,178 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] [2022-07-12 10:52:31,178 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:52:31,178 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:31,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:31,179 INFO L85 PathProgramCache]: Analyzing trace with hash -1664499927, now seen corresponding path program 1 times [2022-07-12 10:52:31,179 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:31,179 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1524125408] [2022-07-12 10:52:31,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:31,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:31,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:52:31,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:31,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:52:31,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:31,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:52:31,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:31,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:31,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:31,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:52:31,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:31,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:52:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:31,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:52:31,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:31,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:52:31,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:31,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 10:52:31,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:31,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 10:52:31,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:31,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 10:52:31,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:31,509 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2022-07-12 10:52:31,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:31,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1524125408] [2022-07-12 10:52:31,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1524125408] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:52:31,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [454186870] [2022-07-12 10:52:31,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:31,511 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:52:31,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:52:31,543 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) [2022-07-12 10:52:31,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 10:52:31,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:31,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 2503 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 10:52:31,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:52:32,072 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 39 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-12 10:52:32,072 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:52:32,073 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [454186870] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:32,073 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:52:32,073 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-07-12 10:52:32,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [903403070] [2022-07-12 10:52:32,074 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:32,074 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:52:32,074 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:32,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:52:32,075 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:52:32,075 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) [2022-07-12 10:52:32,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:32,226 INFO L93 Difference]: Finished difference Result 206 states and 269 transitions. [2022-07-12 10:52:32,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:52:32,227 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 [2022-07-12 10:52:32,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:32,228 INFO L225 Difference]: With dead ends: 206 [2022-07-12 10:52:32,229 INFO L226 Difference]: Without dead ends: 117 [2022-07-12 10:52:32,229 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 [2022-07-12 10:52:32,230 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 [2022-07-12 10:52:32,230 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] [2022-07-12 10:52:32,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-07-12 10:52:32,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2022-07-12 10:52:32,255 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) [2022-07-12 10:52:32,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 152 transitions. [2022-07-12 10:52:32,256 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 152 transitions. Word has length 77 [2022-07-12 10:52:32,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:32,257 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 152 transitions. [2022-07-12 10:52:32,257 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) [2022-07-12 10:52:32,257 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 152 transitions. [2022-07-12 10:52:32,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-12 10:52:32,258 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:32,258 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] [2022-07-12 10:52:32,300 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 10:52:32,475 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 [2022-07-12 10:52:32,476 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:32,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:32,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1289533548, now seen corresponding path program 1 times [2022-07-12 10:52:32,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:32,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416519640] [2022-07-12 10:52:32,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:32,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:32,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:32,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:52:32,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:32,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:52:32,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:32,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:52:32,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:32,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:32,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:32,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:52:32,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:32,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:52:32,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:32,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:52:32,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:32,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:52:32,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:32,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 10:52:32,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:32,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:52:32,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:32,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 10:52:32,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:32,705 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-07-12 10:52:32,705 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:32,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416519640] [2022-07-12 10:52:32,705 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416519640] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:52:32,705 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1263919718] [2022-07-12 10:52:32,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:32,706 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:52:32,706 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:52:32,715 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) [2022-07-12 10:52:32,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 10:52:33,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:33,100 INFO L263 TraceCheckSpWp]: Trace formula consists of 2520 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 10:52:33,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:52:33,213 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 48 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-12 10:52:33,213 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:52:33,213 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1263919718] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:33,213 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:52:33,213 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2022-07-12 10:52:33,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898700321] [2022-07-12 10:52:33,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:33,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:52:33,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:33,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:52:33,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2022-07-12 10:52:33,215 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) [2022-07-12 10:52:33,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:33,340 INFO L93 Difference]: Finished difference Result 206 states and 269 transitions. [2022-07-12 10:52:33,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:52:33,340 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 [2022-07-12 10:52:33,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:33,342 INFO L225 Difference]: With dead ends: 206 [2022-07-12 10:52:33,342 INFO L226 Difference]: Without dead ends: 117 [2022-07-12 10:52:33,342 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 [2022-07-12 10:52:33,343 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 [2022-07-12 10:52:33,343 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] [2022-07-12 10:52:33,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-07-12 10:52:33,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2022-07-12 10:52:33,349 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) [2022-07-12 10:52:33,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 150 transitions. [2022-07-12 10:52:33,350 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 150 transitions. Word has length 83 [2022-07-12 10:52:33,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:33,350 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 150 transitions. [2022-07-12 10:52:33,351 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) [2022-07-12 10:52:33,351 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 150 transitions. [2022-07-12 10:52:33,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-12 10:52:33,352 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:33,352 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] [2022-07-12 10:52:33,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 10:52:33,567 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 [2022-07-12 10:52:33,568 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:33,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:33,568 INFO L85 PathProgramCache]: Analyzing trace with hash -596597057, now seen corresponding path program 2 times [2022-07-12 10:52:33,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:33,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040178094] [2022-07-12 10:52:33,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:33,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:33,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:33,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:52:33,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:33,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:52:33,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:33,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:52:33,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:33,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:33,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:33,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:52:33,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:33,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:52:33,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:33,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:52:33,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:33,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 10:52:33,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:33,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:52:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:33,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:52:33,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:33,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 10:52:33,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:33,808 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 4 proven. 22 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-07-12 10:52:33,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:33,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040178094] [2022-07-12 10:52:33,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2040178094] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:52:33,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [49712746] [2022-07-12 10:52:33,809 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:52:33,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:52:33,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:52:33,810 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) [2022-07-12 10:52:33,811 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 10:52:34,143 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:52:34,143 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:52:34,152 INFO L263 TraceCheckSpWp]: Trace formula consists of 2537 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-12 10:52:34,155 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:52:34,275 INFO L134 CoverageAnalysis]: Checked inductivity of 76 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-12 10:52:34,275 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:52:34,275 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [49712746] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:34,275 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:52:34,276 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 19 [2022-07-12 10:52:34,276 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [898306639] [2022-07-12 10:52:34,276 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:34,276 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:52:34,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:34,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:52:34,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-07-12 10:52:34,277 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) [2022-07-12 10:52:34,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:34,472 INFO L93 Difference]: Finished difference Result 201 states and 258 transitions. [2022-07-12 10:52:34,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:52:34,472 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 [2022-07-12 10:52:34,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:34,474 INFO L225 Difference]: With dead ends: 201 [2022-07-12 10:52:34,474 INFO L226 Difference]: Without dead ends: 117 [2022-07-12 10:52:34,474 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 [2022-07-12 10:52:34,475 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, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:52:34,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [189 Valid, 660 Invalid, 293 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 10:52:34,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-07-12 10:52:34,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 117. [2022-07-12 10:52:34,481 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) [2022-07-12 10:52:34,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 148 transitions. [2022-07-12 10:52:34,482 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 148 transitions. Word has length 89 [2022-07-12 10:52:34,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:34,482 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 148 transitions. [2022-07-12 10:52:34,482 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) [2022-07-12 10:52:34,483 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 148 transitions. [2022-07-12 10:52:34,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-12 10:52:34,483 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:34,483 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] [2022-07-12 10:52:34,515 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 10:52:34,716 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 [2022-07-12 10:52:34,716 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:34,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:34,717 INFO L85 PathProgramCache]: Analyzing trace with hash 24265301, now seen corresponding path program 1 times [2022-07-12 10:52:34,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:34,717 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [423365769] [2022-07-12 10:52:34,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:34,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:34,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:34,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:52:34,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:34,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:52:34,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:34,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:52:35,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:35,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:35,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:35,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:52:35,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:35,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:52:35,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:35,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:52:35,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:35,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 10:52:35,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:35,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:52:35,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:35,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 10:52:35,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:35,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 10:52:35,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:35,130 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-07-12 10:52:35,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:35,131 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [423365769] [2022-07-12 10:52:35,131 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [423365769] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:35,131 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:52:35,131 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:52:35,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895780774] [2022-07-12 10:52:35,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:35,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:52:35,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:35,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:52:35,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:52:35,133 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) [2022-07-12 10:52:35,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:35,568 INFO L93 Difference]: Finished difference Result 131 states and 167 transitions. [2022-07-12 10:52:35,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:52:35,568 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 [2022-07-12 10:52:35,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:35,573 INFO L225 Difference]: With dead ends: 131 [2022-07-12 10:52:35,573 INFO L226 Difference]: Without dead ends: 129 [2022-07-12 10:52:35,573 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 [2022-07-12 10:52:35,574 INFO L413 NwaCegarLoop]: 134 mSDtfsCounter, 87 mSDsluCounter, 322 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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 [2022-07-12 10:52:35,574 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] [2022-07-12 10:52:35,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-07-12 10:52:35,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 126. [2022-07-12 10:52:35,587 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) [2022-07-12 10:52:35,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 162 transitions. [2022-07-12 10:52:35,588 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 162 transitions. Word has length 101 [2022-07-12 10:52:35,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:35,588 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 162 transitions. [2022-07-12 10:52:35,588 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) [2022-07-12 10:52:35,589 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 162 transitions. [2022-07-12 10:52:35,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-12 10:52:35,589 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:35,589 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] [2022-07-12 10:52:35,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 10:52:35,590 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:35,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:35,590 INFO L85 PathProgramCache]: Analyzing trace with hash 1524483933, now seen corresponding path program 1 times [2022-07-12 10:52:35,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:35,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403685007] [2022-07-12 10:52:35,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:35,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:35,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:35,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:52:35,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:35,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:52:35,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:35,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:52:35,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:35,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:35,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:35,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:52:35,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:35,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:52:35,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:35,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:52:35,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:35,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 10:52:35,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:35,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:52:35,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:35,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 10:52:35,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:35,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 10:52:35,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:35,877 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-12 10:52:35,878 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:35,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403685007] [2022-07-12 10:52:35,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403685007] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:35,878 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:52:35,878 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:52:35,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [241580359] [2022-07-12 10:52:35,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:35,879 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:52:35,879 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:35,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:52:35,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:52:35,880 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) [2022-07-12 10:52:36,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:36,378 INFO L93 Difference]: Finished difference Result 207 states and 268 transitions. [2022-07-12 10:52:36,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:52:36,379 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 [2022-07-12 10:52:36,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:36,380 INFO L225 Difference]: With dead ends: 207 [2022-07-12 10:52:36,380 INFO L226 Difference]: Without dead ends: 140 [2022-07-12 10:52:36,380 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 [2022-07-12 10:52:36,381 INFO L413 NwaCegarLoop]: 125 mSDtfsCounter, 144 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 594 mSolverCounterSat, 33 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 10:52:36,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 351 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [33 Valid, 594 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 10:52:36,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-07-12 10:52:36,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 133. [2022-07-12 10:52:36,387 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) [2022-07-12 10:52:36,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 133 states to 133 states and 174 transitions. [2022-07-12 10:52:36,388 INFO L78 Accepts]: Start accepts. Automaton has 133 states and 174 transitions. Word has length 105 [2022-07-12 10:52:36,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:36,389 INFO L495 AbstractCegarLoop]: Abstraction has 133 states and 174 transitions. [2022-07-12 10:52:36,389 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) [2022-07-12 10:52:36,389 INFO L276 IsEmpty]: Start isEmpty. Operand 133 states and 174 transitions. [2022-07-12 10:52:36,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-12 10:52:36,390 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:36,390 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] [2022-07-12 10:52:36,390 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 10:52:36,390 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:36,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:36,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1782649371, now seen corresponding path program 1 times [2022-07-12 10:52:36,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:36,391 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49542746] [2022-07-12 10:52:36,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:36,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:36,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:36,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:52:36,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:36,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:52:36,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:36,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:52:36,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:36,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:36,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:36,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:52:36,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:36,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:52:36,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:36,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:52:36,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:36,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 10:52:36,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:36,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:52:36,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:36,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 10:52:36,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:36,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 10:52:36,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:36,750 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-12 10:52:36,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:36,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49542746] [2022-07-12 10:52:36,751 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49542746] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:52:36,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762247875] [2022-07-12 10:52:36,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:36,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:52:36,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:52:36,764 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) [2022-07-12 10:52:36,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 10:52:37,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:37,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 2578 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-12 10:52:37,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:52:37,153 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 [2022-07-12 10:52:37,308 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-12 10:52:37,309 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:52:37,309 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762247875] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:37,309 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:52:37,309 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 17 [2022-07-12 10:52:37,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136783449] [2022-07-12 10:52:37,309 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:37,310 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-12 10:52:37,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:37,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-12 10:52:37,310 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-07-12 10:52:37,311 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) [2022-07-12 10:52:37,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:37,345 INFO L93 Difference]: Finished difference Result 261 states and 340 transitions. [2022-07-12 10:52:37,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 10:52:37,346 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 [2022-07-12 10:52:37,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:37,347 INFO L225 Difference]: With dead ends: 261 [2022-07-12 10:52:37,347 INFO L226 Difference]: Without dead ends: 146 [2022-07-12 10:52:37,347 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 [2022-07-12 10:52:37,348 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 [2022-07-12 10:52:37,348 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] [2022-07-12 10:52:37,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2022-07-12 10:52:37,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 146. [2022-07-12 10:52:37,354 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) [2022-07-12 10:52:37,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 189 transitions. [2022-07-12 10:52:37,355 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 189 transitions. Word has length 105 [2022-07-12 10:52:37,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:37,355 INFO L495 AbstractCegarLoop]: Abstraction has 146 states and 189 transitions. [2022-07-12 10:52:37,355 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) [2022-07-12 10:52:37,355 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 189 transitions. [2022-07-12 10:52:37,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-12 10:52:37,356 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:37,357 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] [2022-07-12 10:52:37,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 10:52:37,578 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 [2022-07-12 10:52:37,578 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:37,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:37,579 INFO L85 PathProgramCache]: Analyzing trace with hash -128393187, now seen corresponding path program 1 times [2022-07-12 10:52:37,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:37,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1549257434] [2022-07-12 10:52:37,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:37,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:37,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:37,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:52:37,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:37,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:52:37,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:37,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:52:37,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:37,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:37,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:37,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:52:37,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:37,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:52:37,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:37,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:52:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:37,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 10:52:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:37,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 10:52:37,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:37,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 10:52:37,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:37,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 10:52:37,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:37,738 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-12 10:52:37,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:37,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1549257434] [2022-07-12 10:52:37,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1549257434] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:52:37,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1950830951] [2022-07-12 10:52:37,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:37,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:52:37,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:52:37,751 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) [2022-07-12 10:52:37,752 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 10:52:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:38,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 2573 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 10:52:38,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:52:38,093 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-12 10:52:38,093 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:52:38,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1950830951] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:38,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:52:38,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-12 10:52:38,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608998855] [2022-07-12 10:52:38,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:38,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:52:38,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:38,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:52:38,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:52:38,095 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) [2022-07-12 10:52:38,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:38,117 INFO L93 Difference]: Finished difference Result 269 states and 358 transitions. [2022-07-12 10:52:38,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:52:38,117 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 [2022-07-12 10:52:38,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:38,118 INFO L225 Difference]: With dead ends: 269 [2022-07-12 10:52:38,118 INFO L226 Difference]: Without dead ends: 157 [2022-07-12 10:52:38,119 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 [2022-07-12 10:52:38,119 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 [2022-07-12 10:52:38,120 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] [2022-07-12 10:52:38,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-07-12 10:52:38,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 140. [2022-07-12 10:52:38,125 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) [2022-07-12 10:52:38,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 182 transitions. [2022-07-12 10:52:38,126 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 182 transitions. Word has length 105 [2022-07-12 10:52:38,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:38,126 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 182 transitions. [2022-07-12 10:52:38,126 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) [2022-07-12 10:52:38,126 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 182 transitions. [2022-07-12 10:52:38,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-12 10:52:38,127 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:38,127 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] [2022-07-12 10:52:38,149 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 10:52:38,346 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 [2022-07-12 10:52:38,347 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:38,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:38,347 INFO L85 PathProgramCache]: Analyzing trace with hash 322364323, now seen corresponding path program 1 times [2022-07-12 10:52:38,347 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:38,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1513122480] [2022-07-12 10:52:38,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:38,347 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:38,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:38,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:52:38,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:38,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:52:38,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:38,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:52:38,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:38,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:38,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:38,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:52:38,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:38,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 10:52:38,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:38,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 10:52:38,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:38,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 10:52:38,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:38,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:52:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:38,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 10:52:38,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:38,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 10:52:38,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:38,538 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-12 10:52:38,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:38,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1513122480] [2022-07-12 10:52:38,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1513122480] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:52:38,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [477446485] [2022-07-12 10:52:38,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:38,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:52:38,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:52:38,540 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) [2022-07-12 10:52:38,541 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 10:52:38,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:38,957 INFO L263 TraceCheckSpWp]: Trace formula consists of 2590 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 10:52:38,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:52:39,047 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-07-12 10:52:39,047 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:52:39,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [477446485] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:39,047 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:52:39,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2022-07-12 10:52:39,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495362058] [2022-07-12 10:52:39,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:39,048 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:52:39,048 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:39,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:52:39,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-07-12 10:52:39,049 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) [2022-07-12 10:52:39,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:39,174 INFO L93 Difference]: Finished difference Result 272 states and 376 transitions. [2022-07-12 10:52:39,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:52:39,175 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 [2022-07-12 10:52:39,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:39,176 INFO L225 Difference]: With dead ends: 272 [2022-07-12 10:52:39,176 INFO L226 Difference]: Without dead ends: 162 [2022-07-12 10:52:39,177 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 [2022-07-12 10:52:39,178 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 [2022-07-12 10:52:39,178 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] [2022-07-12 10:52:39,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-07-12 10:52:39,185 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 149. [2022-07-12 10:52:39,186 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) [2022-07-12 10:52:39,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 194 transitions. [2022-07-12 10:52:39,187 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 194 transitions. Word has length 109 [2022-07-12 10:52:39,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:39,188 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 194 transitions. [2022-07-12 10:52:39,188 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) [2022-07-12 10:52:39,188 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 194 transitions. [2022-07-12 10:52:39,189 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-12 10:52:39,189 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:39,189 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] [2022-07-12 10:52:39,239 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 10:52:39,415 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 [2022-07-12 10:52:39,415 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:39,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:39,416 INFO L85 PathProgramCache]: Analyzing trace with hash 1209587169, now seen corresponding path program 2 times [2022-07-12 10:52:39,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:39,416 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [939462526] [2022-07-12 10:52:39,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:39,416 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:39,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:39,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:52:39,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:39,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:52:39,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:39,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:52:39,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:39,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:39,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:39,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:52:39,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:39,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 10:52:39,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:39,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 10:52:39,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:39,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 10:52:39,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:39,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:52:39,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:39,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 10:52:39,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:39,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 10:52:39,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:39,590 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-12 10:52:39,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:39,590 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [939462526] [2022-07-12 10:52:39,590 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [939462526] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:52:39,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [480192448] [2022-07-12 10:52:39,591 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:52:39,591 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:52:39,591 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:52:39,592 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) [2022-07-12 10:52:39,593 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 10:52:39,933 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 10:52:39,934 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:52:39,941 INFO L263 TraceCheckSpWp]: Trace formula consists of 2334 conjuncts, 27 conjunts are in the unsatisfiable core [2022-07-12 10:52:39,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:52:39,999 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-12 10:52:39,999 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 [2022-07-12 10:52:40,009 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:52:40,009 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 [2022-07-12 10:52:40,299 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-12 10:52:40,299 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:52:40,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [480192448] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:40,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:52:40,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2022-07-12 10:52:40,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1457639151] [2022-07-12 10:52:40,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:40,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:52:40,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:40,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:52:40,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2022-07-12 10:52:40,301 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) [2022-07-12 10:52:40,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:40,396 INFO L93 Difference]: Finished difference Result 270 states and 347 transitions. [2022-07-12 10:52:40,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:52:40,396 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 [2022-07-12 10:52:40,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:40,398 INFO L225 Difference]: With dead ends: 270 [2022-07-12 10:52:40,398 INFO L226 Difference]: Without dead ends: 173 [2022-07-12 10:52:40,398 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 139 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2022-07-12 10:52:40,399 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 30 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 [2022-07-12 10:52:40,399 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] [2022-07-12 10:52:40,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-07-12 10:52:40,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 167. [2022-07-12 10:52:40,405 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) [2022-07-12 10:52:40,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 220 transitions. [2022-07-12 10:52:40,406 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 220 transitions. Word has length 109 [2022-07-12 10:52:40,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:40,406 INFO L495 AbstractCegarLoop]: Abstraction has 167 states and 220 transitions. [2022-07-12 10:52:40,407 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) [2022-07-12 10:52:40,407 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 220 transitions. [2022-07-12 10:52:40,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-12 10:52:40,407 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:40,408 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] [2022-07-12 10:52:40,427 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-12 10:52:40,626 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 [2022-07-12 10:52:40,626 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:40,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:40,627 INFO L85 PathProgramCache]: Analyzing trace with hash -70276509, now seen corresponding path program 2 times [2022-07-12 10:52:40,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:40,627 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [341700117] [2022-07-12 10:52:40,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:40,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:40,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:40,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:52:40,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:40,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:52:40,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:40,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:52:40,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:40,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:40,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:40,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:52:40,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:40,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 10:52:40,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:40,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 10:52:40,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:40,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 10:52:40,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:40,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:52:40,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:40,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 10:52:40,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:40,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 10:52:40,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:40,822 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 34 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-12 10:52:40,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:40,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [341700117] [2022-07-12 10:52:40,823 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [341700117] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:40,823 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:52:40,823 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:52:40,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1797865132] [2022-07-12 10:52:40,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:40,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:52:40,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:40,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:52:40,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:52:40,825 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) [2022-07-12 10:52:41,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:41,270 INFO L93 Difference]: Finished difference Result 276 states and 361 transitions. [2022-07-12 10:52:41,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 10:52:41,270 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 [2022-07-12 10:52:41,270 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:41,272 INFO L225 Difference]: With dead ends: 276 [2022-07-12 10:52:41,272 INFO L226 Difference]: Without dead ends: 193 [2022-07-12 10:52:41,273 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 [2022-07-12 10:52:41,274 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 143 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 709 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 10:52:41,274 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [151 Valid, 404 Invalid, 744 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 709 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 10:52:41,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-07-12 10:52:41,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 174. [2022-07-12 10:52:41,282 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) [2022-07-12 10:52:41,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 229 transitions. [2022-07-12 10:52:41,292 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 229 transitions. Word has length 109 [2022-07-12 10:52:41,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:41,292 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 229 transitions. [2022-07-12 10:52:41,293 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) [2022-07-12 10:52:41,293 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 229 transitions. [2022-07-12 10:52:41,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-12 10:52:41,293 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:41,294 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] [2022-07-12 10:52:41,294 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 10:52:41,294 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:41,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:41,294 INFO L85 PathProgramCache]: Analyzing trace with hash -1658624411, now seen corresponding path program 1 times [2022-07-12 10:52:41,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:41,295 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [231866199] [2022-07-12 10:52:41,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:41,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:41,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:41,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:52:41,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:41,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:52:41,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:41,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:52:41,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:41,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:41,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:41,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:52:41,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:41,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 10:52:41,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:41,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 10:52:41,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:41,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 10:52:41,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:41,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:52:41,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:41,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 10:52:41,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:41,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 10:52:41,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:41,596 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-12 10:52:41,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:41,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [231866199] [2022-07-12 10:52:41,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [231866199] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:52:41,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1093591734] [2022-07-12 10:52:41,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:41,612 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:52:41,612 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:52:41,613 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) [2022-07-12 10:52:41,614 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-12 10:52:41,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:41,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 2577 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 10:52:41,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:52:42,041 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 31 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-07-12 10:52:42,041 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:52:42,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1093591734] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:42,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:52:42,042 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 13 [2022-07-12 10:52:42,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422157197] [2022-07-12 10:52:42,042 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:42,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:52:42,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:42,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:52:42,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-07-12 10:52:42,043 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) [2022-07-12 10:52:42,188 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:42,188 INFO L93 Difference]: Finished difference Result 333 states and 459 transitions. [2022-07-12 10:52:42,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:52:42,189 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 [2022-07-12 10:52:42,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:42,190 INFO L225 Difference]: With dead ends: 333 [2022-07-12 10:52:42,190 INFO L226 Difference]: Without dead ends: 193 [2022-07-12 10:52:42,190 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 [2022-07-12 10:52:42,191 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 [2022-07-12 10:52:42,191 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] [2022-07-12 10:52:42,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-07-12 10:52:42,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 174. [2022-07-12 10:52:42,197 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) [2022-07-12 10:52:42,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 227 transitions. [2022-07-12 10:52:42,198 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 227 transitions. Word has length 109 [2022-07-12 10:52:42,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:42,199 INFO L495 AbstractCegarLoop]: Abstraction has 174 states and 227 transitions. [2022-07-12 10:52:42,199 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) [2022-07-12 10:52:42,199 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 227 transitions. [2022-07-12 10:52:42,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-12 10:52:42,200 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:42,200 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] [2022-07-12 10:52:42,227 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-12 10:52:42,423 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 [2022-07-12 10:52:42,423 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:42,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:42,424 INFO L85 PathProgramCache]: Analyzing trace with hash 54187592, now seen corresponding path program 1 times [2022-07-12 10:52:42,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:42,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256282554] [2022-07-12 10:52:42,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:42,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:42,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:42,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:52:42,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:42,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:52:42,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:42,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:52:42,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:42,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:42,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:42,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:52:42,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:42,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 10:52:42,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:42,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 10:52:42,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:42,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 10:52:42,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:42,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:52:42,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:42,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 10:52:42,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:42,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 10:52:42,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:42,572 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 95 trivial. 0 not checked. [2022-07-12 10:52:42,573 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:42,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256282554] [2022-07-12 10:52:42,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256282554] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:42,573 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:52:42,573 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:52:42,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674812358] [2022-07-12 10:52:42,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:42,574 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:52:42,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:42,574 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:52:42,574 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:52:42,574 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) [2022-07-12 10:52:42,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:42,778 INFO L93 Difference]: Finished difference Result 322 states and 432 transitions. [2022-07-12 10:52:42,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:52:42,778 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 [2022-07-12 10:52:42,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:42,780 INFO L225 Difference]: With dead ends: 322 [2022-07-12 10:52:42,780 INFO L226 Difference]: Without dead ends: 179 [2022-07-12 10:52:42,780 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 [2022-07-12 10:52:42,781 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 78 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 228 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-07-12 10:52:42,781 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] [2022-07-12 10:52:42,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-07-12 10:52:42,786 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 171. [2022-07-12 10:52:42,786 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) [2022-07-12 10:52:42,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 220 transitions. [2022-07-12 10:52:42,789 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 220 transitions. Word has length 111 [2022-07-12 10:52:42,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:42,789 INFO L495 AbstractCegarLoop]: Abstraction has 171 states and 220 transitions. [2022-07-12 10:52:42,789 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) [2022-07-12 10:52:42,789 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 220 transitions. [2022-07-12 10:52:42,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-12 10:52:42,790 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:42,790 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] [2022-07-12 10:52:42,791 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-12 10:52:42,791 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:42,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:42,791 INFO L85 PathProgramCache]: Analyzing trace with hash -623638900, now seen corresponding path program 1 times [2022-07-12 10:52:42,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:42,791 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1151284956] [2022-07-12 10:52:42,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:42,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:42,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:42,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:52:42,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:42,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:52:42,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:42,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:52:42,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:42,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:42,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:42,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:52:42,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:42,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 10:52:42,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:42,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 10:52:42,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:42,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 10:52:42,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:42,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:52:42,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:42,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 10:52:42,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:42,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 10:52:42,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:42,908 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-12 10:52:42,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:42,908 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1151284956] [2022-07-12 10:52:42,908 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1151284956] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:42,908 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:52:42,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:52:42,909 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751192240] [2022-07-12 10:52:42,909 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:42,909 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:52:42,909 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:42,909 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:52:42,910 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:52:42,910 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) [2022-07-12 10:52:43,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:43,100 INFO L93 Difference]: Finished difference Result 308 states and 415 transitions. [2022-07-12 10:52:43,101 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:52:43,101 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 [2022-07-12 10:52:43,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:43,102 INFO L225 Difference]: With dead ends: 308 [2022-07-12 10:52:43,102 INFO L226 Difference]: Without dead ends: 171 [2022-07-12 10:52:43,102 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 [2022-07-12 10:52:43,103 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 86 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 28 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2022-07-12 10:52:43,103 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] [2022-07-12 10:52:43,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-07-12 10:52:43,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 159. [2022-07-12 10:52:43,110 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) [2022-07-12 10:52:43,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 203 transitions. [2022-07-12 10:52:43,111 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 203 transitions. Word has length 111 [2022-07-12 10:52:43,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:43,111 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 203 transitions. [2022-07-12 10:52:43,112 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) [2022-07-12 10:52:43,112 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 203 transitions. [2022-07-12 10:52:43,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-12 10:52:43,113 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:43,113 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] [2022-07-12 10:52:43,113 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 10:52:43,113 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:43,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:43,114 INFO L85 PathProgramCache]: Analyzing trace with hash 1381915916, now seen corresponding path program 1 times [2022-07-12 10:52:43,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:43,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1810617343] [2022-07-12 10:52:43,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:43,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:43,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:43,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:52:43,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:43,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:52:43,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:43,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:52:43,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:43,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:43,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:43,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:52:43,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:43,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 10:52:43,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:43,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 10:52:43,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:43,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 10:52:43,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:43,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:52:43,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:43,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 10:52:43,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:43,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 10:52:43,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:43,347 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 97 trivial. 0 not checked. [2022-07-12 10:52:43,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:43,348 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1810617343] [2022-07-12 10:52:43,348 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1810617343] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:43,348 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:52:43,348 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:52:43,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638376410] [2022-07-12 10:52:43,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:43,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:52:43,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:43,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:52:43,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:52:43,349 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) [2022-07-12 10:52:43,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:43,844 INFO L93 Difference]: Finished difference Result 175 states and 225 transitions. [2022-07-12 10:52:43,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 10:52:43,845 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 [2022-07-12 10:52:43,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:43,845 INFO L225 Difference]: With dead ends: 175 [2022-07-12 10:52:43,845 INFO L226 Difference]: Without dead ends: 173 [2022-07-12 10:52:43,846 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 [2022-07-12 10:52:43,846 INFO L413 NwaCegarLoop]: 135 mSDtfsCounter, 91 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 847 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s 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, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 10:52:43,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [103 Valid, 557 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 847 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 10:52:43,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-07-12 10:52:43,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 165. [2022-07-12 10:52:43,851 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) [2022-07-12 10:52:43,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 215 transitions. [2022-07-12 10:52:43,852 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 215 transitions. Word has length 111 [2022-07-12 10:52:43,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:43,852 INFO L495 AbstractCegarLoop]: Abstraction has 165 states and 215 transitions. [2022-07-12 10:52:43,852 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) [2022-07-12 10:52:43,852 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 215 transitions. [2022-07-12 10:52:43,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-12 10:52:43,853 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:43,853 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] [2022-07-12 10:52:43,853 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 10:52:43,853 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:43,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:43,853 INFO L85 PathProgramCache]: Analyzing trace with hash 2082980494, now seen corresponding path program 1 times [2022-07-12 10:52:43,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:43,854 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613577938] [2022-07-12 10:52:43,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:43,854 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:43,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:43,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:52:43,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:43,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:52:43,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:43,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:52:43,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:43,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:43,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:43,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:52:43,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:43,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 10:52:43,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:43,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 10:52:43,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:43,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 10:52:43,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:43,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:52:43,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:43,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 10:52:43,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:44,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 10:52:44,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:44,005 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 6 proven. 19 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-12 10:52:44,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:44,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613577938] [2022-07-12 10:52:44,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613577938] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:52:44,006 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1228947844] [2022-07-12 10:52:44,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:44,006 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:52:44,006 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:52:44,007 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) [2022-07-12 10:52:44,008 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-12 10:52:44,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:44,387 INFO L263 TraceCheckSpWp]: Trace formula consists of 2592 conjuncts, 32 conjunts are in the unsatisfiable core [2022-07-12 10:52:44,389 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:52:44,425 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 67 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-12 10:52:44,426 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:52:44,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1228947844] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:44,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:52:44,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 11 [2022-07-12 10:52:44,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2068532973] [2022-07-12 10:52:44,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:44,427 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:52:44,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:44,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:52:44,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:52:44,427 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) [2022-07-12 10:52:44,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:44,524 INFO L93 Difference]: Finished difference Result 303 states and 400 transitions. [2022-07-12 10:52:44,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:52:44,525 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 [2022-07-12 10:52:44,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:44,526 INFO L225 Difference]: With dead ends: 303 [2022-07-12 10:52:44,526 INFO L226 Difference]: Without dead ends: 166 [2022-07-12 10:52:44,527 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 [2022-07-12 10:52:44,527 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 [2022-07-12 10:52:44,527 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] [2022-07-12 10:52:44,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2022-07-12 10:52:44,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2022-07-12 10:52:44,532 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) [2022-07-12 10:52:44,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 217 transitions. [2022-07-12 10:52:44,533 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 217 transitions. Word has length 111 [2022-07-12 10:52:44,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:44,533 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 217 transitions. [2022-07-12 10:52:44,534 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) [2022-07-12 10:52:44,534 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 217 transitions. [2022-07-12 10:52:44,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-12 10:52:44,535 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:44,535 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] [2022-07-12 10:52:44,575 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-12 10:52:44,751 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 [2022-07-12 10:52:44,752 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:44,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:44,752 INFO L85 PathProgramCache]: Analyzing trace with hash 555677817, now seen corresponding path program 1 times [2022-07-12 10:52:44,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:44,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312609408] [2022-07-12 10:52:44,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:44,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:44,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:44,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:52:44,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:44,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:52:44,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:44,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:52:44,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:44,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:44,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:44,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:52:44,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:44,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:52:44,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:44,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:52:44,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:44,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:52:44,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:44,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:52:44,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:44,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 10:52:44,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:44,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 10:52:44,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:44,954 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 36 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-12 10:52:44,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:44,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312609408] [2022-07-12 10:52:44,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312609408] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:44,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:52:44,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 10:52:44,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2079003154] [2022-07-12 10:52:44,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:44,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:52:44,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:44,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:52:44,957 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:52:44,957 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) [2022-07-12 10:52:45,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:45,299 INFO L93 Difference]: Finished difference Result 263 states and 334 transitions. [2022-07-12 10:52:45,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:52:45,300 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 [2022-07-12 10:52:45,300 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:45,301 INFO L225 Difference]: With dead ends: 263 [2022-07-12 10:52:45,301 INFO L226 Difference]: Without dead ends: 168 [2022-07-12 10:52:45,301 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 [2022-07-12 10:52:45,302 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 102 mSDsluCounter, 187 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s 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, 0.3s IncrementalHoareTripleChecker+Time [2022-07-12 10:52:45,302 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 317 Invalid, 518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-12 10:52:45,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-07-12 10:52:45,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 166. [2022-07-12 10:52:45,307 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) [2022-07-12 10:52:45,308 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 215 transitions. [2022-07-12 10:52:45,308 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 215 transitions. Word has length 113 [2022-07-12 10:52:45,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:45,308 INFO L495 AbstractCegarLoop]: Abstraction has 166 states and 215 transitions. [2022-07-12 10:52:45,308 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) [2022-07-12 10:52:45,309 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 215 transitions. [2022-07-12 10:52:45,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-12 10:52:45,309 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:45,310 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] [2022-07-12 10:52:45,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 10:52:45,310 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:45,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:45,310 INFO L85 PathProgramCache]: Analyzing trace with hash -1564998756, now seen corresponding path program 1 times [2022-07-12 10:52:45,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:45,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534535281] [2022-07-12 10:52:45,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:45,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:45,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:45,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:52:45,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:45,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:52:45,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:45,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:52:45,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:45,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:45,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:45,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:52:45,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:45,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:52:45,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:45,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:52:45,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:45,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:52:45,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:45,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:52:45,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:45,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 10:52:45,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:45,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 10:52:45,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:45,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:45,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:45,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:45,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:45,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-12 10:52:45,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:45,641 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-12 10:52:45,641 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:45,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534535281] [2022-07-12 10:52:45,642 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534535281] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:52:45,642 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32497709] [2022-07-12 10:52:45,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:45,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:52:45,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:52:45,643 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) [2022-07-12 10:52:45,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-12 10:52:45,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:45,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 2680 conjuncts, 44 conjunts are in the unsatisfiable core [2022-07-12 10:52:46,002 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:52:46,196 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 [2022-07-12 10:52:46,198 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 [2022-07-12 10:52:46,214 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 93 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-12 10:52:46,214 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:52:46,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32497709] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:46,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:52:46,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [14] total 21 [2022-07-12 10:52:46,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514340127] [2022-07-12 10:52:46,214 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:46,214 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:52:46,214 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:46,215 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:52:46,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2022-07-12 10:52:46,215 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) [2022-07-12 10:52:46,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:46,511 INFO L93 Difference]: Finished difference Result 297 states and 376 transitions. [2022-07-12 10:52:46,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:52:46,512 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 [2022-07-12 10:52:46,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:46,513 INFO L225 Difference]: With dead ends: 297 [2022-07-12 10:52:46,513 INFO L226 Difference]: Without dead ends: 179 [2022-07-12 10:52:46,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 149 SyntacticMatches, 1 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 111 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=96, Invalid=554, Unknown=0, NotChecked=0, Total=650 [2022-07-12 10:52:46,514 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 [2022-07-12 10:52:46,514 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] [2022-07-12 10:52:46,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 179 states. [2022-07-12 10:52:46,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 179 to 173. [2022-07-12 10:52:46,519 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) [2022-07-12 10:52:46,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 222 transitions. [2022-07-12 10:52:46,520 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 222 transitions. Word has length 129 [2022-07-12 10:52:46,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:46,520 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 222 transitions. [2022-07-12 10:52:46,520 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) [2022-07-12 10:52:46,521 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 222 transitions. [2022-07-12 10:52:46,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-12 10:52:46,521 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:46,522 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] [2022-07-12 10:52:46,559 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-12 10:52:46,735 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 [2022-07-12 10:52:46,735 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:46,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:46,736 INFO L85 PathProgramCache]: Analyzing trace with hash -1883428766, now seen corresponding path program 2 times [2022-07-12 10:52:46,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:46,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378282011] [2022-07-12 10:52:46,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:46,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:46,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:46,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:52:46,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:46,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:52:46,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:46,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:52:46,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:46,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:46,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:46,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:52:46,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:46,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:52:46,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:46,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:52:46,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:46,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:52:46,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:46,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:52:46,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:46,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-12 10:52:46,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:46,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 10:52:46,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:46,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:46,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:46,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:46,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:46,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 10:52:46,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:46,955 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 21 proven. 8 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-12 10:52:46,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:46,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378282011] [2022-07-12 10:52:46,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378282011] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:52:46,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177372912] [2022-07-12 10:52:46,956 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:52:46,956 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:52:46,956 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:52:46,980 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) [2022-07-12 10:52:47,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-12 10:52:47,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:52:47,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:52:47,400 INFO L263 TraceCheckSpWp]: Trace formula consists of 2687 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-12 10:52:47,403 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:52:47,451 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 82 proven. 0 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2022-07-12 10:52:47,451 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:52:47,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177372912] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:47,451 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:52:47,451 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 12 [2022-07-12 10:52:47,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621634021] [2022-07-12 10:52:47,451 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:47,452 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:52:47,452 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:47,453 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:52:47,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-07-12 10:52:47,453 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) [2022-07-12 10:52:47,552 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:47,552 INFO L93 Difference]: Finished difference Result 303 states and 384 transitions. [2022-07-12 10:52:47,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:52:47,553 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 [2022-07-12 10:52:47,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:47,554 INFO L225 Difference]: With dead ends: 303 [2022-07-12 10:52:47,554 INFO L226 Difference]: Without dead ends: 173 [2022-07-12 10:52:47,554 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 [2022-07-12 10:52:47,555 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 [2022-07-12 10:52:47,555 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] [2022-07-12 10:52:47,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-07-12 10:52:47,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2022-07-12 10:52:47,561 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) [2022-07-12 10:52:47,562 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 220 transitions. [2022-07-12 10:52:47,562 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 220 transitions. Word has length 133 [2022-07-12 10:52:47,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:47,563 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 220 transitions. [2022-07-12 10:52:47,563 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) [2022-07-12 10:52:47,563 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 220 transitions. [2022-07-12 10:52:47,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-12 10:52:47,564 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:47,564 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] [2022-07-12 10:52:47,597 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-12 10:52:47,784 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 [2022-07-12 10:52:47,784 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:47,784 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:47,784 INFO L85 PathProgramCache]: Analyzing trace with hash 37904781, now seen corresponding path program 3 times [2022-07-12 10:52:47,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:47,785 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932732799] [2022-07-12 10:52:47,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:47,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:48,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:48,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:52:48,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:48,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:52:48,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:48,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:52:48,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:48,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:48,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:48,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:52:48,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:48,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:52:48,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:48,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:52:48,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:48,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:52:48,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:48,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 10:52:48,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:48,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 10:52:48,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:48,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 10:52:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:48,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:48,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:48,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:48,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 10:52:48,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:48,282 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-07-12 10:52:48,282 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:48,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932732799] [2022-07-12 10:52:48,283 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932732799] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:52:48,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [656632309] [2022-07-12 10:52:48,283 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 10:52:48,283 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:52:48,283 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:52:48,284 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) [2022-07-12 10:52:48,311 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-12 10:52:48,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-12 10:52:48,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:52:48,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 2496 conjuncts, 37 conjunts are in the unsatisfiable core [2022-07-12 10:52:48,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:52:49,044 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 [2022-07-12 10:52:49,046 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 83 proven. 4 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2022-07-12 10:52:49,046 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:52:49,340 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-12 10:52:49,341 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 [2022-07-12 10:52:49,362 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 26 proven. 14 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-12 10:52:49,362 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [656632309] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:52:49,362 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:52:49,362 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 11] total 32 [2022-07-12 10:52:49,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279817310] [2022-07-12 10:52:49,362 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:52:49,363 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-12 10:52:49,363 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:49,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-12 10:52:49,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=898, Unknown=0, NotChecked=0, Total=992 [2022-07-12 10:52:49,364 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) [2022-07-12 10:52:51,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:51,048 INFO L93 Difference]: Finished difference Result 348 states and 438 transitions. [2022-07-12 10:52:51,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-12 10:52:51,049 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 [2022-07-12 10:52:51,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:51,050 INFO L225 Difference]: With dead ends: 348 [2022-07-12 10:52:51,050 INFO L226 Difference]: Without dead ends: 200 [2022-07-12 10:52:51,051 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 282 SyntacticMatches, 2 SemanticMatches, 54 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 666 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=335, Invalid=2745, Unknown=0, NotChecked=0, Total=3080 [2022-07-12 10:52:51,051 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 305 mSDsluCounter, 544 mSDsCounter, 0 mSdLazyCounter, 2145 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s 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, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:52:51,052 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [320 Valid, 658 Invalid, 2441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 2145 Invalid, 0 Unknown, 187 Unchecked, 1.1s Time] [2022-07-12 10:52:51,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-07-12 10:52:51,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 179. [2022-07-12 10:52:51,058 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) [2022-07-12 10:52:51,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 224 transitions. [2022-07-12 10:52:51,059 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 224 transitions. Word has length 135 [2022-07-12 10:52:51,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:51,059 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 224 transitions. [2022-07-12 10:52:51,059 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) [2022-07-12 10:52:51,059 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 224 transitions. [2022-07-12 10:52:51,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-12 10:52:51,060 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:51,061 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] [2022-07-12 10:52:51,097 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-07-12 10:52:51,297 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 [2022-07-12 10:52:51,297 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:51,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:51,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1637817810, now seen corresponding path program 1 times [2022-07-12 10:52:51,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:51,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [853946731] [2022-07-12 10:52:51,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:51,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:51,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:51,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:52:51,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:51,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:52:51,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:51,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:52:51,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:51,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:51,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:51,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:52:51,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:51,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:52:51,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:51,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:52:51,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:51,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 10:52:51,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:51,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 10:52:51,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:51,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 10:52:51,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:51,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 10:52:51,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:51,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:51,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:51,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:51,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:51,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 10:52:51,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:51,471 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 152 trivial. 0 not checked. [2022-07-12 10:52:51,471 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:51,471 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [853946731] [2022-07-12 10:52:51,471 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [853946731] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:51,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:52:51,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-12 10:52:51,472 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939620338] [2022-07-12 10:52:51,472 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:51,472 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:52:51,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:51,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:52:51,473 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-12 10:52:51,473 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) [2022-07-12 10:52:51,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:51,742 INFO L93 Difference]: Finished difference Result 293 states and 362 transitions. [2022-07-12 10:52:51,742 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:52:51,742 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 [2022-07-12 10:52:51,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:51,743 INFO L225 Difference]: With dead ends: 293 [2022-07-12 10:52:51,743 INFO L226 Difference]: Without dead ends: 183 [2022-07-12 10:52:51,744 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 10:52:51,744 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, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 10:52:51,744 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 203 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [73 Valid, 196 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 10:52:51,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 183 states. [2022-07-12 10:52:51,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 183 to 180. [2022-07-12 10:52:51,750 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) [2022-07-12 10:52:51,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 225 transitions. [2022-07-12 10:52:51,750 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 225 transitions. Word has length 140 [2022-07-12 10:52:51,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:51,751 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 225 transitions. [2022-07-12 10:52:51,751 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) [2022-07-12 10:52:51,751 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 225 transitions. [2022-07-12 10:52:51,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-12 10:52:51,752 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:51,752 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] [2022-07-12 10:52:51,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 10:52:51,752 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:51,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:51,753 INFO L85 PathProgramCache]: Analyzing trace with hash 347561328, now seen corresponding path program 1 times [2022-07-12 10:52:51,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:51,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104126153] [2022-07-12 10:52:51,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:51,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:51,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:51,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:52:51,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:51,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:52:51,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:51,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:52:51,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:51,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:51,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:51,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:52:51,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:51,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:52:51,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:51,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:52:51,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:51,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 10:52:51,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:51,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 10:52:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:51,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 10:52:51,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:51,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 10:52:51,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:51,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:51,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:51,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:51,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:51,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-12 10:52:51,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:51,991 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 14 proven. 16 refuted. 0 times theorem prover too weak. 123 trivial. 0 not checked. [2022-07-12 10:52:51,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:51,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104126153] [2022-07-12 10:52:51,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104126153] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:52:51,991 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285966232] [2022-07-12 10:52:51,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:51,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:52:51,992 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:52:52,008 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) [2022-07-12 10:52:52,009 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-12 10:52:52,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:52,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 2722 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-12 10:52:52,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:52:52,434 INFO L134 CoverageAnalysis]: Checked inductivity of 153 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-12 10:52:52,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:52:52,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285966232] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:52:52,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:52:52,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [11] total 12 [2022-07-12 10:52:52,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336193302] [2022-07-12 10:52:52,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:52:52,435 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:52:52,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:52:52,435 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:52:52,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2022-07-12 10:52:52,436 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) [2022-07-12 10:52:52,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:52:52,545 INFO L93 Difference]: Finished difference Result 332 states and 412 transitions. [2022-07-12 10:52:52,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-12 10:52:52,545 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 [2022-07-12 10:52:52,546 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:52:52,547 INFO L225 Difference]: With dead ends: 332 [2022-07-12 10:52:52,547 INFO L226 Difference]: Without dead ends: 180 [2022-07-12 10:52:52,547 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 [2022-07-12 10:52:52,548 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 [2022-07-12 10:52:52,548 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] [2022-07-12 10:52:52,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-07-12 10:52:52,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 180. [2022-07-12 10:52:52,559 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) [2022-07-12 10:52:52,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 223 transitions. [2022-07-12 10:52:52,560 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 223 transitions. Word has length 142 [2022-07-12 10:52:52,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:52:52,560 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 223 transitions. [2022-07-12 10:52:52,560 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) [2022-07-12 10:52:52,561 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 223 transitions. [2022-07-12 10:52:52,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-12 10:52:52,565 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:52:52,565 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] [2022-07-12 10:52:52,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-12 10:52:52,786 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 [2022-07-12 10:52:52,786 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:52:52,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:52:52,787 INFO L85 PathProgramCache]: Analyzing trace with hash -1353114459, now seen corresponding path program 2 times [2022-07-12 10:52:52,787 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:52:52,787 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205114303] [2022-07-12 10:52:52,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:52:52,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:52:53,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:53,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:52:53,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:53,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:52:53,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:53,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:52:53,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:53,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:53,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:53,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:52:53,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:53,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:52:53,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:53,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:52:53,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:53,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:52:53,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:53,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 10:52:53,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:53,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 10:52:53,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:53,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 10:52:53,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:53,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:53,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:53,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:52:53,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:53,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 10:52:53,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:52:53,996 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 42 proven. 1 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-07-12 10:52:53,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:52:53,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205114303] [2022-07-12 10:52:53,997 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205114303] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:52:53,997 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936303020] [2022-07-12 10:52:53,997 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:52:53,997 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:52:53,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:52:54,020 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) [2022-07-12 10:52:54,049 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-12 10:52:54,958 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:52:54,958 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:52:54,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 2724 conjuncts, 104 conjunts are in the unsatisfiable core [2022-07-12 10:52:54,976 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:52:54,979 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 [2022-07-12 10:52:55,110 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-12 10:52:55,111 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 [2022-07-12 10:52:55,142 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 [2022-07-12 10:52:57,172 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 [2022-07-12 10:54:36,268 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-12 10:54:36,269 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 [2022-07-12 10:54:38,826 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 [2022-07-12 10:54:38,837 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 [2022-07-12 10:54:38,846 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 [2022-07-12 10:54:38,870 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:54:38,871 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 [2022-07-12 10:54:45,250 INFO L134 CoverageAnalysis]: Checked inductivity of 157 backedges. 12 proven. 105 refuted. 3 times theorem prover too weak. 33 trivial. 4 not checked. [2022-07-12 10:54:45,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:54:45,555 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1164 (Array Int Int))) (< 0 (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))) is different from false [2022-07-12 10:54:45,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [936303020] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:54:45,556 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:54:45,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 30] total 49 [2022-07-12 10:54:45,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1361456859] [2022-07-12 10:54:45,556 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 10:54:45,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2022-07-12 10:54:45,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:54:45,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2022-07-12 10:54:45,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=160, Invalid=2186, Unknown=22, NotChecked=388, Total=2756 [2022-07-12 10:54:45,558 INFO L87 Difference]: Start difference. First operand 180 states and 223 transitions. Second operand has 49 states, 46 states have (on average 3.0652173913043477) internal successors, (141), 39 states have internal predecessors, (141), 17 states have call successors, (30), 12 states have call predecessors, (30), 12 states have return successors, (27), 17 states have call predecessors, (27), 16 states have call successors, (27) [2022-07-12 10:56:25,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:56:25,329 INFO L93 Difference]: Finished difference Result 436 states and 545 transitions. [2022-07-12 10:56:25,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 62 states. [2022-07-12 10:56:25,330 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 46 states have (on average 3.0652173913043477) internal successors, (141), 39 states have internal predecessors, (141), 17 states have call successors, (30), 12 states have call predecessors, (30), 12 states have return successors, (27), 17 states have call predecessors, (27), 16 states have call successors, (27) Word has length 144 [2022-07-12 10:56:25,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:56:25,331 INFO L225 Difference]: With dead ends: 436 [2022-07-12 10:56:25,331 INFO L226 Difference]: Without dead ends: 305 [2022-07-12 10:56:25,334 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 276 GetRequests, 162 SyntacticMatches, 17 SemanticMatches, 97 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 2160 ImplicationChecksByTransitivity, 208.2s TimeCoverageRelationStatistics Valid=616, Invalid=8254, Unknown=76, NotChecked=756, Total=9702 [2022-07-12 10:56:25,334 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 306 mSDsluCounter, 1294 mSDsCounter, 0 mSdLazyCounter, 2792 mSolverCounterSat, 280 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 315 SdHoareTripleChecker+Valid, 1453 SdHoareTripleChecker+Invalid, 4911 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 280 IncrementalHoareTripleChecker+Valid, 2792 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1839 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-12 10:56:25,334 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [315 Valid, 1453 Invalid, 4911 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [280 Valid, 2792 Invalid, 0 Unknown, 1839 Unchecked, 1.8s Time] [2022-07-12 10:56:25,335 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 305 states. [2022-07-12 10:56:25,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 305 to 276. [2022-07-12 10:56:25,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 202 states have (on average 1.103960396039604) internal successors, (223), 208 states have internal predecessors, (223), 45 states have call successors, (45), 22 states have call predecessors, (45), 28 states have return successors, (68), 45 states have call predecessors, (68), 44 states have call successors, (68) [2022-07-12 10:56:25,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 336 transitions. [2022-07-12 10:56:25,345 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 336 transitions. Word has length 144 [2022-07-12 10:56:25,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:56:25,346 INFO L495 AbstractCegarLoop]: Abstraction has 276 states and 336 transitions. [2022-07-12 10:56:25,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 46 states have (on average 3.0652173913043477) internal successors, (141), 39 states have internal predecessors, (141), 17 states have call successors, (30), 12 states have call predecessors, (30), 12 states have return successors, (27), 17 states have call predecessors, (27), 16 states have call successors, (27) [2022-07-12 10:56:25,346 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 336 transitions. [2022-07-12 10:56:25,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 10:56:25,347 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:56:25,348 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] [2022-07-12 10:56:25,370 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-12 10:56:25,568 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 [2022-07-12 10:56:25,568 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:56:25,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:56:25,569 INFO L85 PathProgramCache]: Analyzing trace with hash 1485411045, now seen corresponding path program 1 times [2022-07-12 10:56:25,569 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:56:25,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49896423] [2022-07-12 10:56:25,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:56:25,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:56:25,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:25,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:56:25,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:25,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:56:25,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:25,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:56:25,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:25,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:25,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:25,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:56:25,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:25,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:56:25,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:25,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:56:25,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:25,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:56:25,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:25,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 10:56:25,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:25,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 10:56:25,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:25,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 10:56:25,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:25,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:25,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:25,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:25,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:25,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 10:56:25,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:25,976 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-07-12 10:56:25,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:56:25,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49896423] [2022-07-12 10:56:25,977 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49896423] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:56:25,977 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [413577050] [2022-07-12 10:56:25,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:56:25,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:56:25,978 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:56:25,993 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) [2022-07-12 10:56:25,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-12 10:56:26,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:26,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 2748 conjuncts, 46 conjunts are in the unsatisfiable core [2022-07-12 10:56:26,410 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:56:26,806 INFO L356 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-07-12 10:56:26,806 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 [2022-07-12 10:56:26,809 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 119 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-12 10:56:26,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:56:27,021 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 [2022-07-12 10:56:27,052 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-12 10:56:27,052 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 [2022-07-12 10:56:27,083 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 76 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-12 10:56:27,083 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [413577050] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:56:27,083 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:56:27,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 10] total 23 [2022-07-12 10:56:27,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44137616] [2022-07-12 10:56:27,083 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:56:27,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-12 10:56:27,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:56:27,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-12 10:56:27,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=436, Unknown=0, NotChecked=0, Total=506 [2022-07-12 10:56:27,085 INFO L87 Difference]: Start difference. First operand 276 states and 336 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) [2022-07-12 10:56:28,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:56:28,637 INFO L93 Difference]: Finished difference Result 496 states and 602 transitions. [2022-07-12 10:56:28,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 10:56:28,638 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 [2022-07-12 10:56:28,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:56:28,639 INFO L225 Difference]: With dead ends: 496 [2022-07-12 10:56:28,640 INFO L226 Difference]: Without dead ends: 311 [2022-07-12 10:56:28,640 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 312 SyntacticMatches, 6 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 285 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=254, Invalid=1152, Unknown=0, NotChecked=0, Total=1406 [2022-07-12 10:56:28,641 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 237 mSDsluCounter, 422 mSDsCounter, 0 mSdLazyCounter, 1663 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 256 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 2264 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 1663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 482 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:56:28,641 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [256 Valid, 559 Invalid, 2264 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 1663 Invalid, 0 Unknown, 482 Unchecked, 1.1s Time] [2022-07-12 10:56:28,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-07-12 10:56:28,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 291. [2022-07-12 10:56:28,653 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 291 states, 216 states have (on average 1.1018518518518519) internal successors, (238), 221 states have internal predecessors, (238), 45 states have call successors, (45), 24 states have call predecessors, (45), 29 states have return successors, (67), 45 states have call predecessors, (67), 44 states have call successors, (67) [2022-07-12 10:56:28,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 291 states to 291 states and 350 transitions. [2022-07-12 10:56:28,654 INFO L78 Accepts]: Start accepts. Automaton has 291 states and 350 transitions. Word has length 146 [2022-07-12 10:56:28,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:56:28,654 INFO L495 AbstractCegarLoop]: Abstraction has 291 states and 350 transitions. [2022-07-12 10:56:28,654 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) [2022-07-12 10:56:28,654 INFO L276 IsEmpty]: Start isEmpty. Operand 291 states and 350 transitions. [2022-07-12 10:56:28,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 10:56:28,655 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:56:28,655 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] [2022-07-12 10:56:28,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-12 10:56:28,871 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 [2022-07-12 10:56:28,871 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:56:28,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:56:28,872 INFO L85 PathProgramCache]: Analyzing trace with hash 1391376613, now seen corresponding path program 2 times [2022-07-12 10:56:28,872 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:56:28,872 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858273887] [2022-07-12 10:56:28,872 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:56:28,872 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:56:28,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:28,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:56:28,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:28,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:56:28,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:28,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:56:28,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:28,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:28,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:29,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:56:29,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:29,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:56:29,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:29,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:56:29,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:29,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:56:29,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:29,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 10:56:29,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:29,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 10:56:29,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:29,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 10:56:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:29,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:29,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:29,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:29,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:29,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 10:56:29,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:29,266 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 0 proven. 67 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2022-07-12 10:56:29,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:56:29,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858273887] [2022-07-12 10:56:29,267 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858273887] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:56:29,267 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [482423289] [2022-07-12 10:56:29,267 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:56:29,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:56:29,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:56:29,268 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) [2022-07-12 10:56:29,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-12 10:56:30,565 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:56:30,565 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:56:30,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 2748 conjuncts, 48 conjunts are in the unsatisfiable core [2022-07-12 10:56:30,579 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:56:31,269 INFO L356 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-07-12 10:56:31,269 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 [2022-07-12 10:56:31,271 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 121 proven. 22 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-12 10:56:31,271 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:56:31,524 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 [2022-07-12 10:56:31,583 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-12 10:56:31,583 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 [2022-07-12 10:56:31,614 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 16 proven. 60 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-12 10:56:31,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [482423289] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:56:31,614 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:56:31,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 14, 12] total 27 [2022-07-12 10:56:31,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539604363] [2022-07-12 10:56:31,614 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:56:31,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-12 10:56:31,615 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:56:31,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-12 10:56:31,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=620, Unknown=0, NotChecked=0, Total=702 [2022-07-12 10:56:31,616 INFO L87 Difference]: Start difference. First operand 291 states and 350 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) [2022-07-12 10:56:33,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:56:33,517 INFO L93 Difference]: Finished difference Result 568 states and 700 transitions. [2022-07-12 10:56:33,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-12 10:56:33,518 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 [2022-07-12 10:56:33,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:56:33,520 INFO L225 Difference]: With dead ends: 568 [2022-07-12 10:56:33,520 INFO L226 Difference]: Without dead ends: 362 [2022-07-12 10:56:33,521 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 302 SyntacticMatches, 10 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=284, Invalid=1608, Unknown=0, NotChecked=0, Total=1892 [2022-07-12 10:56:33,521 INFO L413 NwaCegarLoop]: 156 mSDtfsCounter, 339 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 1989 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 361 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 2992 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 1989 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 850 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-07-12 10:56:33,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [361 Valid, 660 Invalid, 2992 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 1989 Invalid, 0 Unknown, 850 Unchecked, 1.3s Time] [2022-07-12 10:56:33,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-07-12 10:56:33,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 314. [2022-07-12 10:56:33,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 314 states, 237 states have (on average 1.0970464135021096) internal successors, (260), 242 states have internal predecessors, (260), 45 states have call successors, (45), 26 states have call predecessors, (45), 31 states have return successors, (65), 45 states have call predecessors, (65), 44 states have call successors, (65) [2022-07-12 10:56:33,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 314 states to 314 states and 370 transitions. [2022-07-12 10:56:33,535 INFO L78 Accepts]: Start accepts. Automaton has 314 states and 370 transitions. Word has length 146 [2022-07-12 10:56:33,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:56:33,535 INFO L495 AbstractCegarLoop]: Abstraction has 314 states and 370 transitions. [2022-07-12 10:56:33,536 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) [2022-07-12 10:56:33,536 INFO L276 IsEmpty]: Start isEmpty. Operand 314 states and 370 transitions. [2022-07-12 10:56:33,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-12 10:56:33,537 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:56:33,537 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] [2022-07-12 10:56:33,561 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-12 10:56:33,758 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 [2022-07-12 10:56:33,758 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:56:33,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:56:33,759 INFO L85 PathProgramCache]: Analyzing trace with hash -930425305, now seen corresponding path program 3 times [2022-07-12 10:56:33,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:56:33,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507337454] [2022-07-12 10:56:33,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:56:33,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:56:34,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:34,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:56:34,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:34,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:56:34,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:34,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:56:34,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:34,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:34,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:34,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:56:34,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:34,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:56:34,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:34,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:56:34,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:34,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:56:34,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:34,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 10:56:34,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:34,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 10:56:34,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:34,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 10:56:34,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:34,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:34,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:35,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:35,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:35,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-12 10:56:35,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:35,540 INFO L134 CoverageAnalysis]: Checked inductivity of 160 backedges. 42 proven. 4 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-07-12 10:56:35,540 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:56:35,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507337454] [2022-07-12 10:56:35,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507337454] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:56:35,540 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1952138124] [2022-07-12 10:56:35,540 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-12 10:56:35,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:56:35,541 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:56:35,542 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) [2022-07-12 10:56:35,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-12 10:56:36,710 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2022-07-12 10:56:36,710 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:56:36,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 2743 conjuncts, 107 conjunts are in the unsatisfiable core [2022-07-12 10:56:36,727 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:56:36,733 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 [2022-07-12 10:56:37,042 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-12 10:56:37,042 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 [2022-07-12 10:56:37,082 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-12 10:56:39,122 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base_BEFORE_CALL_32| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base_BEFORE_CALL_32|) 8) |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base_BEFORE_CALL_32|))) is different from true [2022-07-12 10:56:41,196 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base_BEFORE_CALL_33| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base_BEFORE_CALL_33|) 8) |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_harness_~#buf~3#1.base_BEFORE_CALL_33|))) is different from true [2022-07-12 10:56:43,285 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base_BEFORE_CALL_16| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base_BEFORE_CALL_16|) 8) |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base_BEFORE_CALL_16|))) is different from true [2022-07-12 10:56:45,361 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base_BEFORE_CALL_17| Int)) (not (= (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base_BEFORE_CALL_17|) 8) |v_ULTIMATE.start_aws_byte_buf_clean_up_secure_~buf#1.base_BEFORE_CALL_17|))) is different from true [2022-07-12 10:56:47,483 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_aws_byte_buf_secure_zero_~buf#1.base_BEFORE_CALL_18| Int)) (not (= |v_aws_byte_buf_secure_zero_~buf#1.base_BEFORE_CALL_18| (select (select |c_#memory_$Pointer$.base| |v_aws_byte_buf_secure_zero_~buf#1.base_BEFORE_CALL_18|) 8)))) is different from true