./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_eq_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_array_eq_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 c9f60659fbb0886b2c3c86084c4cc81dbedd027936fc1dda43226ecbc4710056 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:49:39,126 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:49:39,135 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:49:39,173 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:49:39,173 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:49:39,175 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:49:39,177 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:49:39,182 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:49:39,184 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:49:39,190 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:49:39,191 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:49:39,193 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:49:39,193 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:49:39,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:49:39,198 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:49:39,201 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:49:39,202 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:49:39,203 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:49:39,205 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:49:39,208 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:49:39,211 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:49:39,213 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:49:39,214 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:49:39,214 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:49:39,216 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:49:39,220 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:49:39,220 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:49:39,221 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:49:39,222 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:49:39,223 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:49:39,224 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:49:39,224 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:49:39,226 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:49:39,226 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:49:39,227 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:49:39,228 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:49:39,228 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:49:39,228 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:49:39,229 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:49:39,229 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:49:39,229 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:49:39,231 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:49:39,233 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-19 21:49:39,270 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:49:39,270 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:49:39,271 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:49:39,271 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:49:39,273 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:49:39,273 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:49:39,273 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:49:39,274 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:49:39,274 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:49:39,275 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:49:39,275 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:49:39,275 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:49:39,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:49:39,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:49:39,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:49:39,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:49:39,276 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:49:39,276 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:49:39,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:49:39,278 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:49:39,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:49:39,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:49:39,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:49:39,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:49:39,279 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:49:39,279 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:49:39,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:49:39,279 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:49:39,279 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:49:39,280 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:49:39,280 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c9f60659fbb0886b2c3c86084c4cc81dbedd027936fc1dda43226ecbc4710056 [2022-07-19 21:49:39,553 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:49:39,576 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:49:39,578 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:49:39,579 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:49:39,580 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:49:39,581 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_eq_harness.i [2022-07-19 21:49:39,638 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4ee3c484/3b97d747c1e24c92826df04196c98422/FLAG89a4df7fe [2022-07-19 21:49:40,417 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:49:40,417 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_eq_harness.i [2022-07-19 21:49:40,466 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4ee3c484/3b97d747c1e24c92826df04196c98422/FLAG89a4df7fe [2022-07-19 21:49:40,978 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d4ee3c484/3b97d747c1e24c92826df04196c98422 [2022-07-19 21:49:40,983 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:49:40,984 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:49:40,985 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:49:40,985 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:49:40,988 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:49:40,988 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:49:40" (1/1) ... [2022-07-19 21:49:40,990 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21cb14fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:49:40, skipping insertion in model container [2022-07-19 21:49:40,990 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:49:40" (1/1) ... [2022-07-19 21:49:40,997 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:49:41,082 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:49:41,382 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_array_eq_harness.i[4486,4499] [2022-07-19 21:49:41,389 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_array_eq_harness.i[4546,4559] [2022-07-19 21:49:42,168 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:49:42,168 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:49:42,169 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:49:42,170 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:49:42,171 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:49:42,181 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:49:42,183 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:49:42,184 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:49:42,185 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:49:42,423 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-19 21:49:42,425 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-19 21:49:42,425 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-19 21:49:42,426 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-19 21:49:42,427 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-19 21:49:42,428 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-19 21:49:42,428 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-19 21:49:42,429 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-19 21:49:42,429 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-19 21:49:42,430 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-19 21:49:42,524 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-19 21:49:42,667 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:49:42,681 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:49:42,728 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:49:42,762 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:49:42,773 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_array_eq_harness.i[4486,4499] [2022-07-19 21:49:42,774 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_array_eq_harness.i[4546,4559] [2022-07-19 21:49:42,797 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:49:42,798 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:49:42,798 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:49:42,798 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:49:42,799 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:49:42,804 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:49:42,804 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:49:42,805 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:49:42,805 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:49:42,836 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-19 21:49:42,837 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-19 21:49:42,838 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-19 21:49:42,838 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-19 21:49:42,841 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-19 21:49:42,842 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-19 21:49:42,842 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-19 21:49:42,843 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-19 21:49:42,844 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-19 21:49:42,844 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-19 21:49:42,863 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-19 21:49:42,951 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:49:42,953 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:49:42,987 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:49:43,179 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:49:43,180 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:49:43 WrapperNode [2022-07-19 21:49:43,180 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:49:43,181 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:49:43,181 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:49:43,181 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:49:43,188 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:49:43" (1/1) ... [2022-07-19 21:49:43,291 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:49:43" (1/1) ... [2022-07-19 21:49:43,391 INFO L137 Inliner]: procedures = 691, calls = 2616, calls flagged for inlining = 59, calls inlined = 5, statements flattened = 790 [2022-07-19 21:49:43,392 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:49:43,393 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:49:43,393 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:49:43,393 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:49:43,400 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:49:43" (1/1) ... [2022-07-19 21:49:43,401 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:49:43" (1/1) ... [2022-07-19 21:49:43,412 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:49:43" (1/1) ... [2022-07-19 21:49:43,413 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:49:43" (1/1) ... [2022-07-19 21:49:43,450 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:49:43" (1/1) ... [2022-07-19 21:49:43,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:49:43" (1/1) ... [2022-07-19 21:49:43,470 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:49:43" (1/1) ... [2022-07-19 21:49:43,488 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:49:43,491 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:49:43,492 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:49:43,492 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:49:43,493 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:49:43" (1/1) ... [2022-07-19 21:49:43,499 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:49:43,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:49:43,529 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 21:49:43,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 21:49:43,564 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2022-07-19 21:49:43,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:49:43,565 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-19 21:49:43,565 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-19 21:49:43,566 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:49:43,566 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-19 21:49:43,566 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-19 21:49:43,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 21:49:43,566 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:49:43,567 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2022-07-19 21:49:43,567 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2022-07-19 21:49:43,568 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:49:43,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:49:43,568 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-19 21:49:43,569 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-19 21:49:43,569 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-19 21:49:43,569 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-19 21:49:43,569 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-07-19 21:49:43,570 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-07-19 21:49:43,570 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-19 21:49:43,570 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-19 21:49:43,570 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:49:43,570 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_eq [2022-07-19 21:49:43,571 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_eq [2022-07-19 21:49:43,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-19 21:49:43,571 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-19 21:49:43,572 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-19 21:49:43,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:49:43,572 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:49:43,830 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:49:43,832 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:49:44,648 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:49:44,657 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:49:44,657 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-19 21:49:44,659 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:49:44 BoogieIcfgContainer [2022-07-19 21:49:44,659 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:49:44,662 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:49:44,662 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:49:44,664 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:49:44,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:49:40" (1/3) ... [2022-07-19 21:49:44,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5483877b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:49:44, skipping insertion in model container [2022-07-19 21:49:44,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:49:43" (2/3) ... [2022-07-19 21:49:44,666 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5483877b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:49:44, skipping insertion in model container [2022-07-19 21:49:44,666 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:49:44" (3/3) ... [2022-07-19 21:49:44,667 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_eq_harness.i [2022-07-19 21:49:44,679 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:49:44,679 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:49:44,739 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:49:44,744 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@458e9a0f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@376df77 [2022-07-19 21:49:44,744 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 21:49:44,750 INFO L276 IsEmpty]: Start isEmpty. Operand has 87 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 55 states have internal predecessors, (66), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) [2022-07-19 21:49:44,759 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 21:49:44,760 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:49:44,760 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-07-19 21:49:44,761 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:49:44,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:49:44,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1074851773, now seen corresponding path program 1 times [2022-07-19 21:49:44,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:49:44,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473391437] [2022-07-19 21:49:44,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:49:44,776 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:49:45,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:45,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:49:45,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:45,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 21:49:45,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:45,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:49:45,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:45,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 21:49:45,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:45,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 21:49:45,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:45,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 21:49:45,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:45,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 21:49:45,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:45,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 21:49:45,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:45,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:49:45,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:45,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:49:45,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:45,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 21:49:45,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:45,510 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-19 21:49:45,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:49:45,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473391437] [2022-07-19 21:49:45,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473391437] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:49:45,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:49:45,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 21:49:45,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803875501] [2022-07-19 21:49:45,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:49:45,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:49:45,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:49:45,546 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:49:45,547 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 21:49:45,549 INFO L87 Difference]: Start difference. First operand has 87 states, 52 states have (on average 1.2692307692307692) internal successors, (66), 55 states have internal predecessors, (66), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (24), 24 states have call predecessors, (24), 24 states have call successors, (24) Second operand has 4 states, 4 states have (on average 6.25) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 21:49:45,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:49:45,809 INFO L93 Difference]: Finished difference Result 176 states and 252 transitions. [2022-07-19 21:49:45,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:49:45,812 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 65 [2022-07-19 21:49:45,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:49:45,820 INFO L225 Difference]: With dead ends: 176 [2022-07-19 21:49:45,820 INFO L226 Difference]: Without dead ends: 87 [2022-07-19 21:49:45,825 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:49:45,833 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 72 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 21:49:45,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 149 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 21:49:45,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-07-19 21:49:45,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 82. [2022-07-19 21:49:45,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 48 states have (on average 1.2291666666666667) internal successors, (59), 50 states have internal predecessors, (59), 24 states have call successors, (24), 9 states have call predecessors, (24), 9 states have return successors, (23), 23 states have call predecessors, (23), 23 states have call successors, (23) [2022-07-19 21:49:45,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 106 transitions. [2022-07-19 21:49:45,876 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 106 transitions. Word has length 65 [2022-07-19 21:49:45,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:49:45,877 INFO L495 AbstractCegarLoop]: Abstraction has 82 states and 106 transitions. [2022-07-19 21:49:45,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.25) internal successors, (25), 2 states have internal predecessors, (25), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 21:49:45,877 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 106 transitions. [2022-07-19 21:49:45,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 21:49:45,880 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:49:45,881 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-07-19 21:49:45,881 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:49:45,881 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:49:45,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:49:45,882 INFO L85 PathProgramCache]: Analyzing trace with hash 401511231, now seen corresponding path program 1 times [2022-07-19 21:49:45,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:49:45,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655005293] [2022-07-19 21:49:45,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:49:45,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:49:45,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:46,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:49:46,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:46,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 21:49:46,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:46,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:49:46,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:46,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 21:49:46,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:46,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 21:49:46,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:46,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 21:49:46,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:46,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 21:49:46,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:46,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 21:49:46,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:46,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:49:46,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:46,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:49:46,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:46,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 21:49:46,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:46,359 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-19 21:49:46,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:49:46,359 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655005293] [2022-07-19 21:49:46,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655005293] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:49:46,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:49:46,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:49:46,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740828024] [2022-07-19 21:49:46,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:49:46,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:49:46,362 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:49:46,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:49:46,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:49:46,363 INFO L87 Difference]: Start difference. First operand 82 states and 106 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-19 21:49:46,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:49:46,685 INFO L93 Difference]: Finished difference Result 124 states and 158 transitions. [2022-07-19 21:49:46,685 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:49:46,686 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) Word has length 65 [2022-07-19 21:49:46,688 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:49:46,693 INFO L225 Difference]: With dead ends: 124 [2022-07-19 21:49:46,693 INFO L226 Difference]: Without dead ends: 90 [2022-07-19 21:49:46,696 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:49:46,700 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 74 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 203 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 261 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 203 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 21:49:46,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 203 Invalid, 261 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 203 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 21:49:46,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2022-07-19 21:49:46,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 85. [2022-07-19 21:49:46,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 50 states have (on average 1.22) internal successors, (61), 52 states have internal predecessors, (61), 24 states have call successors, (24), 9 states have call predecessors, (24), 10 states have return successors, (24), 24 states have call predecessors, (24), 23 states have call successors, (24) [2022-07-19 21:49:46,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 109 transitions. [2022-07-19 21:49:46,730 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 109 transitions. Word has length 65 [2022-07-19 21:49:46,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:49:46,730 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 109 transitions. [2022-07-19 21:49:46,731 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 3 states have internal predecessors, (25), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 1 states have call successors, (11) [2022-07-19 21:49:46,731 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 109 transitions. [2022-07-19 21:49:46,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-19 21:49:46,734 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:49:46,735 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-07-19 21:49:46,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 21:49:46,735 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:49:46,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:49:46,736 INFO L85 PathProgramCache]: Analyzing trace with hash 560902053, now seen corresponding path program 1 times [2022-07-19 21:49:46,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:49:46,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967084152] [2022-07-19 21:49:46,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:49:46,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:49:46,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:47,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:49:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:47,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 21:49:47,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:47,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:49:47,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:47,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 21:49:47,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:47,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 21:49:47,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:47,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 21:49:47,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:47,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 21:49:47,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:47,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 21:49:47,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:47,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:49:47,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:47,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:49:47,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:47,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 21:49:47,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:47,484 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-19 21:49:47,485 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:49:47,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967084152] [2022-07-19 21:49:47,485 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967084152] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:49:47,485 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2017297765] [2022-07-19 21:49:47,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:49:47,486 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:49:47,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:49:47,488 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:49:47,489 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 21:49:47,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:47,947 INFO L263 TraceCheckSpWp]: Trace formula consists of 2451 conjuncts, 12 conjunts are in the unsatisfiable core [2022-07-19 21:49:47,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:49:48,133 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-19 21:49:48,134 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:49:48,134 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2017297765] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:49:48,134 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:49:48,134 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [14] total 18 [2022-07-19 21:49:48,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410177030] [2022-07-19 21:49:48,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:49:48,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:49:48,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:49:48,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:49:48,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2022-07-19 21:49:48,137 INFO L87 Difference]: Start difference. First operand 85 states and 109 transitions. Second operand has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 21:49:48,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:49:48,268 INFO L93 Difference]: Finished difference Result 132 states and 176 transitions. [2022-07-19 21:49:48,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:49:48,270 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 66 [2022-07-19 21:49:48,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:49:48,274 INFO L225 Difference]: With dead ends: 132 [2022-07-19 21:49:48,275 INFO L226 Difference]: Without dead ends: 116 [2022-07-19 21:49:48,275 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2022-07-19 21:49:48,278 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 18 mSDsluCounter, 402 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 21:49:48,278 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 513 Invalid, 100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 21:49:48,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-07-19 21:49:48,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 101. [2022-07-19 21:49:48,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 58 states have (on average 1.206896551724138) internal successors, (70), 61 states have internal predecessors, (70), 30 states have call successors, (30), 10 states have call predecessors, (30), 12 states have return successors, (33), 30 states have call predecessors, (33), 29 states have call successors, (33) [2022-07-19 21:49:48,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 133 transitions. [2022-07-19 21:49:48,291 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 133 transitions. Word has length 66 [2022-07-19 21:49:48,291 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:49:48,292 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 133 transitions. [2022-07-19 21:49:48,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.7142857142857144) internal successors, (26), 5 states have internal predecessors, (26), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 21:49:48,292 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 133 transitions. [2022-07-19 21:49:48,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-19 21:49:48,294 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:49:48,294 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-07-19 21:49:48,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 21:49:48,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:49:48,512 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:49:48,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:49:48,513 INFO L85 PathProgramCache]: Analyzing trace with hash 1220340855, now seen corresponding path program 1 times [2022-07-19 21:49:48,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:49:48,513 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868921801] [2022-07-19 21:49:48,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:49:48,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:49:48,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:48,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:49:48,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:48,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 21:49:48,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:48,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:49:48,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:48,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 21:49:48,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:48,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 21:49:48,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:48,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 21:49:48,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:48,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 21:49:48,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:48,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 21:49:48,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:48,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:49:48,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:48,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:49:48,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:48,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 21:49:48,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:48,856 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-19 21:49:48,856 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:49:48,857 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868921801] [2022-07-19 21:49:48,857 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868921801] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:49:48,857 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:49:48,857 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:49:48,857 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919032649] [2022-07-19 21:49:48,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:49:48,858 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:49:48,858 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:49:48,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:49:48,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:49:48,859 INFO L87 Difference]: Start difference. First operand 101 states and 133 transitions. Second operand has 8 states, 8 states have (on average 3.5) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 21:49:49,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:49:49,361 INFO L93 Difference]: Finished difference Result 168 states and 238 transitions. [2022-07-19 21:49:49,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:49:49,362 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 69 [2022-07-19 21:49:49,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:49:49,364 INFO L225 Difference]: With dead ends: 168 [2022-07-19 21:49:49,364 INFO L226 Difference]: Without dead ends: 136 [2022-07-19 21:49:49,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:49:49,366 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 76 mSDsluCounter, 148 mSDsCounter, 0 mSdLazyCounter, 424 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 505 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 21:49:49,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 249 Invalid, 505 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 424 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 21:49:49,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2022-07-19 21:49:49,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 132. [2022-07-19 21:49:49,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 73 states have (on average 1.2054794520547945) internal successors, (88), 75 states have internal predecessors, (88), 45 states have call successors, (45), 10 states have call predecessors, (45), 13 states have return successors, (55), 47 states have call predecessors, (55), 44 states have call successors, (55) [2022-07-19 21:49:49,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 188 transitions. [2022-07-19 21:49:49,394 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 188 transitions. Word has length 69 [2022-07-19 21:49:49,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:49:49,394 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 188 transitions. [2022-07-19 21:49:49,395 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.5) internal successors, (28), 5 states have internal predecessors, (28), 3 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 21:49:49,395 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 188 transitions. [2022-07-19 21:49:49,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-19 21:49:49,401 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:49:49,401 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 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] [2022-07-19 21:49:49,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:49:49,402 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:49:49,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:49:49,402 INFO L85 PathProgramCache]: Analyzing trace with hash -1527144091, now seen corresponding path program 1 times [2022-07-19 21:49:49,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:49:49,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147650324] [2022-07-19 21:49:49,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:49:49,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:49:49,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:49,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:49:49,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:49,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 21:49:49,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:49,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:49:49,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:49,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 21:49:49,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:49,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-19 21:49:49,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:49,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 21:49:49,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:49,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 21:49:49,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:49,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 21:49:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:49,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:49:49,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:49,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:49:49,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:49,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 21:49:49,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:49,724 INFO L134 CoverageAnalysis]: Checked inductivity of 47 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-19 21:49:49,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:49:49,726 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147650324] [2022-07-19 21:49:49,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147650324] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:49:49,726 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:49:49,726 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:49:49,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2124380740] [2022-07-19 21:49:49,727 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:49:49,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:49:49,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:49:49,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:49:49,728 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:49:49,728 INFO L87 Difference]: Start difference. First operand 132 states and 188 transitions. Second operand has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-19 21:49:50,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:49:50,368 INFO L93 Difference]: Finished difference Result 153 states and 216 transitions. [2022-07-19 21:49:50,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:49:50,369 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 70 [2022-07-19 21:49:50,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:49:50,371 INFO L225 Difference]: With dead ends: 153 [2022-07-19 21:49:50,371 INFO L226 Difference]: Without dead ends: 126 [2022-07-19 21:49:50,371 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=121, Unknown=0, NotChecked=0, Total=156 [2022-07-19 21:49:50,372 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 88 mSDsluCounter, 179 mSDsCounter, 0 mSdLazyCounter, 555 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 555 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 21:49:50,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 288 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 555 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 21:49:50,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-07-19 21:49:50,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 122. [2022-07-19 21:49:50,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 69 states have (on average 1.1884057971014492) internal successors, (82), 71 states have internal predecessors, (82), 39 states have call successors, (39), 10 states have call predecessors, (39), 13 states have return successors, (47), 41 states have call predecessors, (47), 38 states have call successors, (47) [2022-07-19 21:49:50,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 168 transitions. [2022-07-19 21:49:50,385 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 168 transitions. Word has length 70 [2022-07-19 21:49:50,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:49:50,385 INFO L495 AbstractCegarLoop]: Abstraction has 122 states and 168 transitions. [2022-07-19 21:49:50,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.2222222222222223) internal successors, (29), 6 states have internal predecessors, (29), 4 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-19 21:49:50,385 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 168 transitions. [2022-07-19 21:49:50,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-19 21:49:50,387 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:49:50,387 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 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] [2022-07-19 21:49:50,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:49:50,387 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:49:50,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:49:50,388 INFO L85 PathProgramCache]: Analyzing trace with hash -343504052, now seen corresponding path program 1 times [2022-07-19 21:49:50,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:49:50,388 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2949461] [2022-07-19 21:49:50,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:49:50,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:49:50,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:50,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:49:50,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:50,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 21:49:50,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:50,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:49:50,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:50,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 21:49:50,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:50,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 21:49:50,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:50,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 21:49:50,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:50,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:49:50,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:50,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 21:49:50,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:50,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 21:49:50,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:50,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 21:49:50,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:50,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 21:49:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:50,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 21:49:50,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:51,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:49:51,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:51,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 21:49:51,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:51,067 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-19 21:49:51,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:49:51,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2949461] [2022-07-19 21:49:51,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2949461] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:49:51,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1137670800] [2022-07-19 21:49:51,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:49:51,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:49:51,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:49:51,070 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:49:51,080 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 21:49:51,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:51,449 INFO L263 TraceCheckSpWp]: Trace formula consists of 2489 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-19 21:49:51,453 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:49:51,734 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-07-19 21:49:51,734 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:49:51,735 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1137670800] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:49:51,735 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:49:51,735 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [16] total 21 [2022-07-19 21:49:51,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298724515] [2022-07-19 21:49:51,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:49:51,736 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:49:51,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:49:51,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:49:51,737 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=374, Unknown=0, NotChecked=0, Total=420 [2022-07-19 21:49:51,737 INFO L87 Difference]: Start difference. First operand 122 states and 168 transitions. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 21:49:51,922 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:49:51,922 INFO L93 Difference]: Finished difference Result 173 states and 230 transitions. [2022-07-19 21:49:51,923 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:49:51,923 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 82 [2022-07-19 21:49:51,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:49:51,924 INFO L225 Difference]: With dead ends: 173 [2022-07-19 21:49:51,924 INFO L226 Difference]: Without dead ends: 119 [2022-07-19 21:49:51,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 104 SyntacticMatches, 2 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=488, Unknown=0, NotChecked=0, Total=552 [2022-07-19 21:49:51,925 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 16 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 21:49:51,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 713 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 21:49:51,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2022-07-19 21:49:51,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 119. [2022-07-19 21:49:51,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 67 states have (on average 1.1791044776119404) internal successors, (79), 69 states have internal predecessors, (79), 39 states have call successors, (39), 10 states have call predecessors, (39), 12 states have return successors, (44), 40 states have call predecessors, (44), 38 states have call successors, (44) [2022-07-19 21:49:51,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 162 transitions. [2022-07-19 21:49:51,944 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 162 transitions. Word has length 82 [2022-07-19 21:49:51,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:49:51,946 INFO L495 AbstractCegarLoop]: Abstraction has 119 states and 162 transitions. [2022-07-19 21:49:51,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 7 states have internal predecessors, (27), 3 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 21:49:51,946 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 162 transitions. [2022-07-19 21:49:51,949 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-19 21:49:51,950 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:49:51,950 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 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] [2022-07-19 21:49:51,982 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-19 21:49:52,167 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,SelfDestructingSolverStorable5 [2022-07-19 21:49:52,168 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:49:52,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:49:52,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1399306283, now seen corresponding path program 1 times [2022-07-19 21:49:52,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:49:52,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282107675] [2022-07-19 21:49:52,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:49:52,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:49:52,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:52,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:49:52,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:52,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 21:49:52,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:52,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:49:52,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:52,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 21:49:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:52,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 21:49:52,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:52,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 21:49:52,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:52,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:49:52,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:52,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 21:49:52,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:52,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 21:49:52,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:52,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 21:49:52,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:52,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 21:49:52,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:52,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 21:49:52,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:52,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:49:52,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:52,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 21:49:52,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:52,629 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-19 21:49:52,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:49:52,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282107675] [2022-07-19 21:49:52,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282107675] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:49:52,630 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557001280] [2022-07-19 21:49:52,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:49:52,630 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:49:52,630 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:49:52,631 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:49:52,639 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 21:49:53,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:53,038 INFO L263 TraceCheckSpWp]: Trace formula consists of 2490 conjuncts, 34 conjunts are in the unsatisfiable core [2022-07-19 21:49:53,043 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:49:53,385 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 0 proven. 44 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-19 21:49:53,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:49:54,143 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-19 21:49:54,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557001280] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:49:54,144 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:49:54,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 14] total 26 [2022-07-19 21:49:54,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163995126] [2022-07-19 21:49:54,144 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:49:54,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-19 21:49:54,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:49:54,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-19 21:49:54,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=589, Unknown=0, NotChecked=0, Total=650 [2022-07-19 21:49:54,146 INFO L87 Difference]: Start difference. First operand 119 states and 162 transitions. Second operand has 26 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 21 states have internal predecessors, (71), 11 states have call successors, (32), 6 states have call predecessors, (32), 7 states have return successors, (31), 10 states have call predecessors, (31), 10 states have call successors, (31) [2022-07-19 21:49:55,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:49:55,940 INFO L93 Difference]: Finished difference Result 189 states and 261 transitions. [2022-07-19 21:49:55,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-07-19 21:49:55,941 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 21 states have internal predecessors, (71), 11 states have call successors, (32), 6 states have call predecessors, (32), 7 states have return successors, (31), 10 states have call predecessors, (31), 10 states have call successors, (31) Word has length 82 [2022-07-19 21:49:55,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:49:55,942 INFO L225 Difference]: With dead ends: 189 [2022-07-19 21:49:55,943 INFO L226 Difference]: Without dead ends: 144 [2022-07-19 21:49:55,944 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 228 GetRequests, 177 SyntacticMatches, 6 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 248 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=257, Invalid=1905, Unknown=0, NotChecked=0, Total=2162 [2022-07-19 21:49:55,944 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 167 mSDsluCounter, 597 mSDsCounter, 0 mSdLazyCounter, 1727 mSolverCounterSat, 197 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 1924 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 197 IncrementalHoareTripleChecker+Valid, 1727 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 21:49:55,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 681 Invalid, 1924 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [197 Valid, 1727 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-07-19 21:49:55,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-07-19 21:49:55,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 125. [2022-07-19 21:49:55,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 71 states have (on average 1.1690140845070423) internal successors, (83), 75 states have internal predecessors, (83), 39 states have call successors, (39), 11 states have call predecessors, (39), 14 states have return successors, (49), 39 states have call predecessors, (49), 38 states have call successors, (49) [2022-07-19 21:49:55,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 171 transitions. [2022-07-19 21:49:55,957 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 171 transitions. Word has length 82 [2022-07-19 21:49:55,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:49:55,958 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 171 transitions. [2022-07-19 21:49:55,958 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 23 states have (on average 3.0869565217391304) internal successors, (71), 21 states have internal predecessors, (71), 11 states have call successors, (32), 6 states have call predecessors, (32), 7 states have return successors, (31), 10 states have call predecessors, (31), 10 states have call successors, (31) [2022-07-19 21:49:55,958 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 171 transitions. [2022-07-19 21:49:55,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-19 21:49:55,959 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:49:55,959 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:49:55,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 21:49:56,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:49:56,173 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:49:56,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:49:56,174 INFO L85 PathProgramCache]: Analyzing trace with hash 207953017, now seen corresponding path program 1 times [2022-07-19 21:49:56,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:49:56,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [158256706] [2022-07-19 21:49:56,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:49:56,174 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:49:56,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:56,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:49:56,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:56,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 21:49:56,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:56,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:49:56,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:56,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 21:49:56,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:56,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:49:56,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:56,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 21:49:56,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:56,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 21:49:56,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:56,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:49:56,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:56,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 21:49:56,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:56,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 21:49:56,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:56,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 21:49:56,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:56,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 21:49:56,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:56,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:49:56,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:56,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 21:49:56,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:56,687 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-19 21:49:56,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:49:56,688 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [158256706] [2022-07-19 21:49:56,688 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [158256706] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:49:56,688 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:49:56,688 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-19 21:49:56,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529676091] [2022-07-19 21:49:56,689 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:49:56,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-19 21:49:56,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:49:56,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-19 21:49:56,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=182, Unknown=0, NotChecked=0, Total=210 [2022-07-19 21:49:56,691 INFO L87 Difference]: Start difference. First operand 125 states and 171 transitions. Second operand has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 11 states have internal predecessors, (37), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2022-07-19 21:49:57,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:49:57,845 INFO L93 Difference]: Finished difference Result 206 states and 286 transitions. [2022-07-19 21:49:57,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 21:49:57,845 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 11 states have internal predecessors, (37), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) Word has length 87 [2022-07-19 21:49:57,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:49:57,847 INFO L225 Difference]: With dead ends: 206 [2022-07-19 21:49:57,847 INFO L226 Difference]: Without dead ends: 174 [2022-07-19 21:49:57,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=93, Invalid=609, Unknown=0, NotChecked=0, Total=702 [2022-07-19 21:49:57,850 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 138 mSDsluCounter, 317 mSDsCounter, 0 mSdLazyCounter, 1331 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 430 SdHoareTripleChecker+Invalid, 1456 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 1331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 21:49:57,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 430 Invalid, 1456 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 1331 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-19 21:49:57,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2022-07-19 21:49:57,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 131. [2022-07-19 21:49:57,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 73 states have (on average 1.178082191780822) internal successors, (86), 76 states have internal predecessors, (86), 43 states have call successors, (43), 11 states have call predecessors, (43), 14 states have return successors, (54), 44 states have call predecessors, (54), 42 states have call successors, (54) [2022-07-19 21:49:57,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 183 transitions. [2022-07-19 21:49:57,867 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 183 transitions. Word has length 87 [2022-07-19 21:49:57,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:49:57,868 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 183 transitions. [2022-07-19 21:49:57,868 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 14 states have (on average 2.642857142857143) internal successors, (37), 11 states have internal predecessors, (37), 6 states have call successors, (16), 4 states have call predecessors, (16), 4 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2022-07-19 21:49:57,868 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 183 transitions. [2022-07-19 21:49:57,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-19 21:49:57,869 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:49:57,869 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:49:57,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 21:49:57,870 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:49:57,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:49:57,870 INFO L85 PathProgramCache]: Analyzing trace with hash 1448571299, now seen corresponding path program 1 times [2022-07-19 21:49:57,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:49:57,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671968022] [2022-07-19 21:49:57,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:49:57,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:49:57,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:58,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:49:58,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:58,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 21:49:58,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:58,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:49:58,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:58,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 21:49:58,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:58,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:49:58,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:58,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 21:49:58,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:58,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 21:49:58,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:58,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:49:58,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:58,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 21:49:58,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:58,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 21:49:58,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:58,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 21:49:58,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:58,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 21:49:58,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:58,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:49:58,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:58,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 21:49:58,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:58,258 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-19 21:49:58,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:49:58,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671968022] [2022-07-19 21:49:58,258 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671968022] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:49:58,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2069861552] [2022-07-19 21:49:58,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:49:58,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:49:58,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:49:58,260 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:49:58,294 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 21:49:58,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:58,682 INFO L263 TraceCheckSpWp]: Trace formula consists of 2558 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-19 21:49:58,685 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:49:58,781 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 91 trivial. 0 not checked. [2022-07-19 21:49:58,782 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:49:58,782 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2069861552] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:49:58,782 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:49:58,782 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14] total 16 [2022-07-19 21:49:58,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1173968290] [2022-07-19 21:49:58,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:49:58,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:49:58,783 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:49:58,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:49:58,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2022-07-19 21:49:58,784 INFO L87 Difference]: Start difference. First operand 131 states and 183 transitions. Second operand has 10 states, 10 states have (on average 3.6) internal successors, (36), 8 states have internal predecessors, (36), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-19 21:49:58,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:49:58,928 INFO L93 Difference]: Finished difference Result 177 states and 247 transitions. [2022-07-19 21:49:58,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:49:58,928 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 8 states have internal predecessors, (36), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) Word has length 88 [2022-07-19 21:49:58,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:49:58,930 INFO L225 Difference]: With dead ends: 177 [2022-07-19 21:49:58,930 INFO L226 Difference]: Without dead ends: 149 [2022-07-19 21:49:58,930 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=264, Unknown=0, NotChecked=0, Total=306 [2022-07-19 21:49:58,931 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 46 mSDsluCounter, 790 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 918 SdHoareTripleChecker+Invalid, 181 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 21:49:58,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 918 Invalid, 181 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 21:49:58,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-07-19 21:49:58,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 137. [2022-07-19 21:49:58,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 137 states, 79 states have (on average 1.1645569620253164) internal successors, (92), 81 states have internal predecessors, (92), 43 states have call successors, (43), 11 states have call predecessors, (43), 14 states have return successors, (51), 45 states have call predecessors, (51), 42 states have call successors, (51) [2022-07-19 21:49:58,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 186 transitions. [2022-07-19 21:49:58,946 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 186 transitions. Word has length 88 [2022-07-19 21:49:58,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:49:58,946 INFO L495 AbstractCegarLoop]: Abstraction has 137 states and 186 transitions. [2022-07-19 21:49:58,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.6) internal successors, (36), 8 states have internal predecessors, (36), 4 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (14), 5 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-19 21:49:58,946 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 186 transitions. [2022-07-19 21:49:58,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-19 21:49:58,947 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:49:58,948 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 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] [2022-07-19 21:49:58,975 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 21:49:59,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:49:59,168 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:49:59,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:49:59,168 INFO L85 PathProgramCache]: Analyzing trace with hash -1562553972, now seen corresponding path program 1 times [2022-07-19 21:49:59,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:49:59,169 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1850892917] [2022-07-19 21:49:59,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:49:59,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:49:59,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:59,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:49:59,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:59,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 21:49:59,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:59,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:49:59,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:59,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-19 21:49:59,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:59,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-19 21:49:59,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:59,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 21:49:59,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:59,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:49:59,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:59,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 21:49:59,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:59,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 21:49:59,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:59,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 21:49:59,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:59,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 21:49:59,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:59,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 21:49:59,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:59,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:49:59,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:59,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 21:49:59,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:49:59,449 INFO L134 CoverageAnalysis]: Checked inductivity of 79 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-19 21:49:59,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:49:59,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1850892917] [2022-07-19 21:49:59,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1850892917] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:49:59,449 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:49:59,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 21:49:59,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131331294] [2022-07-19 21:49:59,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:49:59,450 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:49:59,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:49:59,451 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:49:59,452 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:49:59,452 INFO L87 Difference]: Start difference. First operand 137 states and 186 transitions. Second operand has 8 states, 8 states have (on average 4.125) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 21:49:59,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:49:59,891 INFO L93 Difference]: Finished difference Result 184 states and 258 transitions. [2022-07-19 21:49:59,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:49:59,892 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 86 [2022-07-19 21:49:59,892 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:49:59,893 INFO L225 Difference]: With dead ends: 184 [2022-07-19 21:49:59,893 INFO L226 Difference]: Without dead ends: 160 [2022-07-19 21:49:59,894 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:49:59,894 INFO L413 NwaCegarLoop]: 129 mSDtfsCounter, 78 mSDsluCounter, 262 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 21:49:59,895 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 391 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 21:49:59,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-07-19 21:49:59,907 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2022-07-19 21:49:59,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 91 states have (on average 1.164835164835165) internal successors, (106), 92 states have internal predecessors, (106), 54 states have call successors, (54), 11 states have call predecessors, (54), 14 states have return successors, (62), 57 states have call predecessors, (62), 52 states have call successors, (62) [2022-07-19 21:49:59,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 222 transitions. [2022-07-19 21:49:59,910 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 222 transitions. Word has length 86 [2022-07-19 21:49:59,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:49:59,910 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 222 transitions. [2022-07-19 21:49:59,910 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.125) internal successors, (33), 5 states have internal predecessors, (33), 3 states have call successors, (15), 4 states have call predecessors, (15), 2 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 21:49:59,910 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 222 transitions. [2022-07-19 21:49:59,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-19 21:49:59,912 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:49:59,912 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 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] [2022-07-19 21:49:59,912 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 21:49:59,912 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:49:59,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:49:59,913 INFO L85 PathProgramCache]: Analyzing trace with hash -1066644358, now seen corresponding path program 1 times [2022-07-19 21:49:59,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:49:59,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1185290936] [2022-07-19 21:49:59,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:49:59,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:50:00,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:00,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:50:00,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:00,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 21:50:00,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:00,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:50:00,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:00,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 21:50:00,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:00,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:50:00,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:00,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 21:50:00,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:00,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 21:50:00,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:00,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:50:00,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:00,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-19 21:50:00,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:00,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:50:00,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:00,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 21:50:00,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:00,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 21:50:00,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:00,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 21:50:00,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:00,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:50:00,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:00,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 21:50:00,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:00,474 INFO L134 CoverageAnalysis]: Checked inductivity of 122 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-07-19 21:50:00,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:50:00,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1185290936] [2022-07-19 21:50:00,475 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1185290936] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:50:00,475 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:50:00,475 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:50:00,475 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796149975] [2022-07-19 21:50:00,475 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:50:00,476 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:50:00,476 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:50:00,477 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:50:00,477 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:50:00,477 INFO L87 Difference]: Start difference. First operand 160 states and 222 transitions. Second operand has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 5 states have internal predecessors, (34), 4 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-19 21:50:00,894 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:50:00,894 INFO L93 Difference]: Finished difference Result 179 states and 243 transitions. [2022-07-19 21:50:00,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 21:50:00,895 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 5 states have internal predecessors, (34), 4 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 94 [2022-07-19 21:50:00,895 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:50:00,896 INFO L225 Difference]: With dead ends: 179 [2022-07-19 21:50:00,896 INFO L226 Difference]: Without dead ends: 162 [2022-07-19 21:50:00,897 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:50:00,897 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 88 mSDsluCounter, 120 mSDsCounter, 0 mSdLazyCounter, 348 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 427 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 348 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 21:50:00,897 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 222 Invalid, 427 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 348 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 21:50:00,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-07-19 21:50:00,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 159. [2022-07-19 21:50:00,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 159 states, 90 states have (on average 1.1666666666666667) internal successors, (105), 92 states have internal predecessors, (105), 54 states have call successors, (54), 11 states have call predecessors, (54), 14 states have return successors, (61), 56 states have call predecessors, (61), 52 states have call successors, (61) [2022-07-19 21:50:00,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 220 transitions. [2022-07-19 21:50:00,911 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 220 transitions. Word has length 94 [2022-07-19 21:50:00,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:50:00,912 INFO L495 AbstractCegarLoop]: Abstraction has 159 states and 220 transitions. [2022-07-19 21:50:00,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.857142857142857) internal successors, (34), 5 states have internal predecessors, (34), 4 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-19 21:50:00,912 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 220 transitions. [2022-07-19 21:50:00,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-19 21:50:00,913 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:50:00,914 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 8, 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] [2022-07-19 21:50:00,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 21:50:00,914 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:50:00,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:50:00,914 INFO L85 PathProgramCache]: Analyzing trace with hash -1470452839, now seen corresponding path program 1 times [2022-07-19 21:50:00,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:50:00,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771702323] [2022-07-19 21:50:00,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:50:00,915 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:50:01,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:50:25,089 WARN L233 SmtUtils]: Spent 10.14s on a formula simplification. DAG size of input: 154 DAG size of output: 40 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-19 21:50:46,867 WARN L233 SmtUtils]: Spent 9.48s on a formula simplification. DAG size of input: 164 DAG size of output: 38 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-19 21:51:31,321 WARN L233 SmtUtils]: Spent 11.24s on a formula simplification. DAG size of input: 141 DAG size of output: 26 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-19 21:51:48,905 WARN L233 SmtUtils]: Spent 6.33s on a formula simplification. DAG size of input: 141 DAG size of output: 26 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-19 21:52:07,678 WARN L233 SmtUtils]: Spent 8.87s on a formula simplification. DAG size of input: 125 DAG size of output: 27 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-19 21:52:07,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 21:52:07,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:52:07,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 21:52:07,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:52:07,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:52:07,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:52:07,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 21:52:07,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:52:07,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:52:07,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:52:07,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 21:52:07,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:52:08,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 21:52:08,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat