./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_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 9db28b965fea5f2f8d3364c7a869d0042b63b50d32f7a417c3baadcb401d0709 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:59:25,120 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:59:25,128 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:59:25,170 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:59:25,171 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:59:25,172 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:59:25,174 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:59:25,179 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:59:25,181 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:59:25,186 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:59:25,187 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:59:25,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:59:25,188 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:59:25,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:59:25,191 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:59:25,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:59:25,196 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:59:25,197 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:59:25,199 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:59:25,200 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:59:25,204 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:59:25,208 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:59:25,209 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:59:25,210 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:59:25,211 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:59:25,214 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:59:25,215 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:59:25,216 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:59:25,216 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:59:25,217 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:59:25,218 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:59:25,218 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:59:25,220 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:59:25,221 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:59:25,221 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:59:25,222 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:59:25,222 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:59:25,223 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:59:25,223 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:59:25,223 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:59:25,224 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:59:25,226 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:59:25,227 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-19 21:59:25,246 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:59:25,246 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:59:25,247 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:59:25,247 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:59:25,247 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:59:25,247 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:59:25,248 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:59:25,248 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:59:25,248 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:59:25,249 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:59:25,249 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:59:25,250 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:59:25,250 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:59:25,250 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:59:25,250 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:59:25,250 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:59:25,251 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:59:25,251 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:59:25,251 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:59:25,252 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:59:25,252 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:59:25,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:59:25,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:59:25,253 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:59:25,253 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:59:25,253 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:59:25,254 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:59:25,254 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:59:25,254 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:59:25,254 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:59:25,254 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9db28b965fea5f2f8d3364c7a869d0042b63b50d32f7a417c3baadcb401d0709 [2022-07-19 21:59:25,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:59:25,519 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:59:25,522 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:59:25,523 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:59:25,524 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:59:25,525 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness.i [2022-07-19 21:59:25,586 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9ad403c4/42b2d121947b41cf964ce689d4d48cae/FLAG0b51f2f08 [2022-07-19 21:59:26,253 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:59:26,256 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness.i [2022-07-19 21:59:26,298 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9ad403c4/42b2d121947b41cf964ce689d4d48cae/FLAG0b51f2f08 [2022-07-19 21:59:26,550 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a9ad403c4/42b2d121947b41cf964ce689d4d48cae [2022-07-19 21:59:26,556 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:59:26,558 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:59:26,559 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:59:26,559 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:59:26,562 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:59:26,562 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:59:26" (1/1) ... [2022-07-19 21:59:26,563 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45c52a95 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:26, skipping insertion in model container [2022-07-19 21:59:26,564 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:59:26" (1/1) ... [2022-07-19 21:59:26,570 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:59:26,666 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:59:26,889 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness.i[4498,4511] [2022-07-19 21:59:26,896 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness.i[4558,4571] [2022-07-19 21:59:27,544 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:27,545 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:27,546 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:27,546 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:27,547 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:27,558 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:27,564 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:27,567 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:27,567 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:27,800 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-19 21:59:27,801 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-19 21:59:27,802 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-19 21:59:27,803 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-19 21:59:27,804 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-19 21:59:27,805 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-19 21:59:27,805 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-19 21:59:27,805 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-19 21:59:27,806 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-19 21:59:27,806 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-19 21:59:27,904 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-19 21:59:27,991 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:27,992 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:28,049 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:59:28,100 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:59:28,124 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness.i[4498,4511] [2022-07-19 21:59:28,125 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_secure_zero_harness.i[4558,4571] [2022-07-19 21:59:28,170 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:28,170 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:28,171 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:28,172 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:28,175 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:28,183 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:28,186 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:28,189 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:28,189 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:28,225 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-19 21:59:28,226 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-19 21:59:28,227 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-19 21:59:28,227 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-19 21:59:28,228 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-19 21:59:28,228 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-19 21:59:28,228 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-19 21:59:28,229 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-19 21:59:28,229 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-19 21:59:28,229 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-19 21:59:28,260 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-19 21:59:28,350 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:28,351 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:28,377 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:59:28,575 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:59:28,576 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:28 WrapperNode [2022-07-19 21:59:28,576 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:59:28,577 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:59:28,577 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:59:28,578 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:59:28,584 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:28" (1/1) ... [2022-07-19 21:59:28,698 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:28" (1/1) ... [2022-07-19 21:59:28,783 INFO L137 Inliner]: procedures = 691, calls = 2614, calls flagged for inlining = 60, calls inlined = 8, statements flattened = 796 [2022-07-19 21:59:28,784 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:59:28,784 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:59:28,784 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:59:28,785 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:59:28,792 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:28" (1/1) ... [2022-07-19 21:59:28,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:28" (1/1) ... [2022-07-19 21:59:28,803 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:28" (1/1) ... [2022-07-19 21:59:28,803 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:28" (1/1) ... [2022-07-19 21:59:28,842 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:28" (1/1) ... [2022-07-19 21:59:28,846 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:28" (1/1) ... [2022-07-19 21:59:28,851 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:28" (1/1) ... [2022-07-19 21:59:28,859 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:59:28,860 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:59:28,860 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:59:28,860 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:59:28,861 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:28" (1/1) ... [2022-07-19 21:59:28,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:59:28,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:59:28,908 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 21:59:28,926 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 21:59:28,941 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-07-19 21:59:28,941 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-07-19 21:59:28,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:59:28,942 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-19 21:59:28,942 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-19 21:59:28,942 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:59:28,943 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-19 21:59:28,943 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-19 21:59:28,943 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_secure_zero [2022-07-19 21:59:28,944 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_secure_zero [2022-07-19 21:59:28,944 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 21:59:28,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:59:28,945 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 21:59:28,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:59:28,945 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:59:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-19 21:59:28,946 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-19 21:59:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-19 21:59:28,946 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-19 21:59:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:59:28,946 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 21:59:28,947 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-19 21:59:28,947 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-19 21:59:28,947 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-19 21:59:28,947 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-19 21:59:28,947 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-19 21:59:28,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:59:28,948 INFO L130 BoogieDeclarations]: Found specification of procedure memset_impl [2022-07-19 21:59:28,948 INFO L138 BoogieDeclarations]: Found implementation of procedure memset_impl [2022-07-19 21:59:28,949 INFO L130 BoogieDeclarations]: Found specification of procedure my_memset [2022-07-19 21:59:28,949 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memset [2022-07-19 21:59:28,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:59:29,188 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:59:29,189 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:59:30,143 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:59:30,154 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:59:30,154 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 21:59:30,160 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:59:30 BoogieIcfgContainer [2022-07-19 21:59:30,161 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:59:30,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:59:30,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:59:30,166 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:59:30,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:59:26" (1/3) ... [2022-07-19 21:59:30,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a88d4fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:59:30, skipping insertion in model container [2022-07-19 21:59:30,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:28" (2/3) ... [2022-07-19 21:59:30,167 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a88d4fc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:59:30, skipping insertion in model container [2022-07-19 21:59:30,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:59:30" (3/3) ... [2022-07-19 21:59:30,168 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_secure_zero_harness.i [2022-07-19 21:59:30,180 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:59:30,181 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:59:30,242 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:59:30,248 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@68fe8c45, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1e2a84f4 [2022-07-19 21:59:30,248 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 21:59:30,251 INFO L276 IsEmpty]: Start isEmpty. Operand has 103 states, 70 states have (on average 1.2285714285714286) internal successors, (86), 71 states have internal predecessors, (86), 21 states have call successors, (21), 10 states have call predecessors, (21), 10 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) [2022-07-19 21:59:30,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 21:59:30,260 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:59:30,260 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:59:30,261 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:59:30,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:59:30,265 INFO L85 PathProgramCache]: Analyzing trace with hash -70528239, now seen corresponding path program 1 times [2022-07-19 21:59:30,272 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:59:30,273 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338156249] [2022-07-19 21:59:30,273 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:30,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:59:30,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:30,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:59:30,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:30,786 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:59:30,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:30,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:59:30,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:30,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:30,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:30,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:59:30,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:30,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 21:59:30,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:30,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 21:59:30,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:30,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 21:59:30,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:30,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-19 21:59:30,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:30,926 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-19 21:59:30,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:59:30,927 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338156249] [2022-07-19 21:59:30,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338156249] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:59:30,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:59:30,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:59:30,930 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491529948] [2022-07-19 21:59:30,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:59:30,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:59:30,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:59:30,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:59:30,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:59:30,965 INFO L87 Difference]: Start difference. First operand has 103 states, 70 states have (on average 1.2285714285714286) internal successors, (86), 71 states have internal predecessors, (86), 21 states have call successors, (21), 10 states have call predecessors, (21), 10 states have return successors, (21), 21 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-19 21:59:31,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:59:31,169 INFO L93 Difference]: Finished difference Result 202 states and 265 transitions. [2022-07-19 21:59:31,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:59:31,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) Word has length 65 [2022-07-19 21:59:31,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:59:31,184 INFO L225 Difference]: With dead ends: 202 [2022-07-19 21:59:31,184 INFO L226 Difference]: Without dead ends: 98 [2022-07-19 21:59:31,189 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:59:31,195 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 58 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 21 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 66 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 21 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 21:59:31,195 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [66 Valid, 138 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [21 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 21:59:31,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-07-19 21:59:31,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-07-19 21:59:31,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 66 states have (on average 1.196969696969697) internal successors, (79), 67 states have internal predecessors, (79), 21 states have call successors, (21), 10 states have call predecessors, (21), 10 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-07-19 21:59:31,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 120 transitions. [2022-07-19 21:59:31,247 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 120 transitions. Word has length 65 [2022-07-19 21:59:31,248 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:59:31,248 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 120 transitions. [2022-07-19 21:59:31,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 2 states have internal predecessors, (28), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 1 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-19 21:59:31,248 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 120 transitions. [2022-07-19 21:59:31,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 21:59:31,253 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:59:31,253 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:59:31,253 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:59:31,254 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:59:31,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:59:31,254 INFO L85 PathProgramCache]: Analyzing trace with hash 1061132297, now seen corresponding path program 1 times [2022-07-19 21:59:31,254 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:59:31,255 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [213512538] [2022-07-19 21:59:31,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:31,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:59:31,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:31,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:59:31,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:31,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:59:31,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:31,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:59:31,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:31,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:31,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:31,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:59:31,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:31,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 21:59:31,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:31,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 21:59:31,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:31,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 21:59:31,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:31,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-19 21:59:31,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:31,597 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-19 21:59:31,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:59:31,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [213512538] [2022-07-19 21:59:31,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [213512538] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:59:31,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029485635] [2022-07-19 21:59:31,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:31,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:31,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:59:31,602 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 21:59:31,603 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 21:59:32,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:32,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 2469 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 21:59:32,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:59:32,235 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-19 21:59:32,235 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:59:32,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029485635] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:59:32,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:59:32,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-07-19 21:59:32,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [93197833] [2022-07-19 21:59:32,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:59:32,238 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:59:32,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:59:32,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:59:32,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:59:32,239 INFO L87 Difference]: Start difference. First operand 98 states and 120 transitions. Second operand has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-19 21:59:32,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:59:32,337 INFO L93 Difference]: Finished difference Result 174 states and 217 transitions. [2022-07-19 21:59:32,338 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:59:32,338 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 65 [2022-07-19 21:59:32,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:59:32,341 INFO L225 Difference]: With dead ends: 174 [2022-07-19 21:59:32,341 INFO L226 Difference]: Without dead ends: 101 [2022-07-19 21:59:32,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-19 21:59:32,343 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 140 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 21:59:32,343 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 272 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 21:59:32,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-07-19 21:59:32,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 101. [2022-07-19 21:59:32,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 68 states have (on average 1.1911764705882353) internal successors, (81), 70 states have internal predecessors, (81), 21 states have call successors, (21), 10 states have call predecessors, (21), 11 states have return successors, (22), 20 states have call predecessors, (22), 20 states have call successors, (22) [2022-07-19 21:59:32,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 124 transitions. [2022-07-19 21:59:32,355 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 124 transitions. Word has length 65 [2022-07-19 21:59:32,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:59:32,356 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 124 transitions. [2022-07-19 21:59:32,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.833333333333333) internal successors, (35), 6 states have internal predecessors, (35), 3 states have call successors, (11), 2 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-19 21:59:32,356 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 124 transitions. [2022-07-19 21:59:32,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-19 21:59:32,357 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:59:32,358 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:59:32,392 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 21:59:32,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:32,567 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:59:32,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:59:32,568 INFO L85 PathProgramCache]: Analyzing trace with hash -883820620, now seen corresponding path program 1 times [2022-07-19 21:59:32,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:59:32,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1357158824] [2022-07-19 21:59:32,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:32,568 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:59:32,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:32,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:59:32,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:32,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:59:32,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:32,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:59:32,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:32,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:32,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:32,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:59:32,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:32,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 21:59:32,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:33,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 21:59:33,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:33,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 21:59:33,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:33,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 21:59:33,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:33,058 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-19 21:59:33,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:59:33,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1357158824] [2022-07-19 21:59:33,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1357158824] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:59:33,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097251552] [2022-07-19 21:59:33,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:33,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:33,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:59:33,061 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 21:59:33,062 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 21:59:33,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:33,500 INFO L263 TraceCheckSpWp]: Trace formula consists of 2486 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 21:59:33,505 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:59:33,645 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-19 21:59:33,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:59:33,645 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097251552] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:59:33,645 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:59:33,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [12] total 18 [2022-07-19 21:59:33,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [310538343] [2022-07-19 21:59:33,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:59:33,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:59:33,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:59:33,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:59:33,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=263, Unknown=0, NotChecked=0, Total=306 [2022-07-19 21:59:33,648 INFO L87 Difference]: Start difference. First operand 101 states and 124 transitions. Second operand has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 4 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-07-19 21:59:33,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:59:33,831 INFO L93 Difference]: Finished difference Result 172 states and 211 transitions. [2022-07-19 21:59:33,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 21:59:33,832 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 4 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) Word has length 71 [2022-07-19 21:59:33,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:59:33,833 INFO L225 Difference]: With dead ends: 172 [2022-07-19 21:59:33,833 INFO L226 Difference]: Without dead ends: 98 [2022-07-19 21:59:33,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=435, Unknown=0, NotChecked=0, Total=506 [2022-07-19 21:59:33,835 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 150 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 413 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 21:59:33,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 413 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 21:59:33,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-07-19 21:59:33,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-07-19 21:59:33,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 66 states have (on average 1.1818181818181819) internal successors, (78), 67 states have internal predecessors, (78), 21 states have call successors, (21), 10 states have call predecessors, (21), 10 states have return successors, (20), 20 states have call predecessors, (20), 20 states have call successors, (20) [2022-07-19 21:59:33,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 119 transitions. [2022-07-19 21:59:33,850 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 119 transitions. Word has length 71 [2022-07-19 21:59:33,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:59:33,851 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 119 transitions. [2022-07-19 21:59:33,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 4 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 3 states have call predecessors, (9), 4 states have call successors, (9) [2022-07-19 21:59:33,853 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 119 transitions. [2022-07-19 21:59:33,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-19 21:59:33,858 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:59:33,858 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:59:33,888 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 21:59:34,074 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-19 21:59:34,074 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:59:34,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:59:34,075 INFO L85 PathProgramCache]: Analyzing trace with hash 81192906, now seen corresponding path program 1 times [2022-07-19 21:59:34,075 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:59:34,075 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1931326587] [2022-07-19 21:59:34,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:34,075 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:59:34,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:34,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:59:34,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:34,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:59:34,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:34,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:59:34,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:34,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:34,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:34,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:59:34,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:34,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 21:59:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:34,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 21:59:34,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:34,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 21:59:34,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:34,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 21:59:34,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:34,417 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-19 21:59:34,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:59:34,417 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1931326587] [2022-07-19 21:59:34,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1931326587] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:59:34,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:59:34,418 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:59:34,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330120490] [2022-07-19 21:59:34,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:59:34,419 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:59:34,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:59:34,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:59:34,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:59:34,420 INFO L87 Difference]: Start difference. First operand 98 states and 119 transitions. Second operand has 9 states, 8 states have (on average 4.75) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-19 21:59:34,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:59:34,840 INFO L93 Difference]: Finished difference Result 110 states and 134 transitions. [2022-07-19 21:59:34,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:59:34,841 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.75) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 83 [2022-07-19 21:59:34,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:59:34,842 INFO L225 Difference]: With dead ends: 110 [2022-07-19 21:59:34,843 INFO L226 Difference]: Without dead ends: 108 [2022-07-19 21:59:34,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-07-19 21:59:34,844 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 84 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 515 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 515 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 21:59:34,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 338 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 515 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 21:59:34,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-07-19 21:59:34,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 107. [2022-07-19 21:59:34,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 72 states have (on average 1.1666666666666667) internal successors, (84), 74 states have internal predecessors, (84), 22 states have call successors, (22), 11 states have call predecessors, (22), 12 states have return successors, (25), 21 states have call predecessors, (25), 21 states have call successors, (25) [2022-07-19 21:59:34,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 131 transitions. [2022-07-19 21:59:34,854 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 131 transitions. Word has length 83 [2022-07-19 21:59:34,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:59:34,854 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 131 transitions. [2022-07-19 21:59:34,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.75) internal successors, (38), 6 states have internal predecessors, (38), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-07-19 21:59:34,854 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 131 transitions. [2022-07-19 21:59:34,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-19 21:59:34,856 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:59:34,856 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:59:34,856 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 21:59:34,856 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:59:34,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:59:34,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1920648402, now seen corresponding path program 1 times [2022-07-19 21:59:34,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:59:34,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1373656370] [2022-07-19 21:59:34,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:34,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:59:34,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:35,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:59:35,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:35,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:59:35,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:35,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:59:35,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:35,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:35,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:35,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:59:35,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:35,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 21:59:35,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:35,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 21:59:35,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:35,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 21:59:35,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:35,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 21:59:35,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:35,153 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2022-07-19 21:59:35,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:59:35,154 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1373656370] [2022-07-19 21:59:35,154 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1373656370] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:59:35,154 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:59:35,154 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 21:59:35,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516111637] [2022-07-19 21:59:35,154 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:59:35,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:59:35,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:59:35,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:59:35,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 21:59:35,156 INFO L87 Difference]: Start difference. First operand 107 states and 131 transitions. Second operand has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-19 21:59:35,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:59:35,554 INFO L93 Difference]: Finished difference Result 214 states and 275 transitions. [2022-07-19 21:59:35,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 21:59:35,555 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 87 [2022-07-19 21:59:35,555 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:59:35,557 INFO L225 Difference]: With dead ends: 214 [2022-07-19 21:59:35,557 INFO L226 Difference]: Without dead ends: 132 [2022-07-19 21:59:35,557 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2022-07-19 21:59:35,558 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 126 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 372 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 245 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 372 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 21:59:35,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 245 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 372 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 21:59:35,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-07-19 21:59:35,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 112. [2022-07-19 21:59:35,566 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 77 states have (on average 1.1818181818181819) internal successors, (91), 79 states have internal predecessors, (91), 22 states have call successors, (22), 11 states have call predecessors, (22), 12 states have return successors, (25), 21 states have call predecessors, (25), 21 states have call successors, (25) [2022-07-19 21:59:35,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 138 transitions. [2022-07-19 21:59:35,567 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 138 transitions. Word has length 87 [2022-07-19 21:59:35,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:59:35,568 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 138 transitions. [2022-07-19 21:59:35,568 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-19 21:59:35,568 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 138 transitions. [2022-07-19 21:59:35,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-19 21:59:35,569 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:59:35,569 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:59:35,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:59:35,569 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:59:35,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:59:35,570 INFO L85 PathProgramCache]: Analyzing trace with hash -2116153456, now seen corresponding path program 1 times [2022-07-19 21:59:35,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:59:35,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310847120] [2022-07-19 21:59:35,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:35,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:59:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:35,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:59:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:35,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:59:35,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:35,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:59:35,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:35,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:35,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:35,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:59:35,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:36,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 21:59:36,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:36,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 21:59:36,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:36,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 21:59:36,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:36,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 21:59:36,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:36,156 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-19 21:59:36,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:59:36,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1310847120] [2022-07-19 21:59:36,157 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1310847120] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:59:36,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1663835343] [2022-07-19 21:59:36,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:36,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:36,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:59:36,159 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 21:59:36,160 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 21:59:36,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:36,566 INFO L263 TraceCheckSpWp]: Trace formula consists of 2527 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-19 21:59:36,572 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:59:36,637 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 21:59:36,918 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 21:59:36,921 INFO L356 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-07-19 21:59:36,922 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 1 [2022-07-19 21:59:36,925 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-19 21:59:36,925 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:59:36,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1663835343] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:59:36,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:59:36,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 17 [2022-07-19 21:59:36,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1642130790] [2022-07-19 21:59:36,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:59:36,926 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 21:59:36,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:59:36,927 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 21:59:36,927 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-07-19 21:59:36,927 INFO L87 Difference]: Start difference. First operand 112 states and 138 transitions. Second operand has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 10 states have internal predecessors, (52), 5 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2022-07-19 21:59:36,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:59:36,983 INFO L93 Difference]: Finished difference Result 222 states and 275 transitions. [2022-07-19 21:59:36,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 21:59:36,983 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 10 states have internal predecessors, (52), 5 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) Word has length 87 [2022-07-19 21:59:36,985 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:59:36,987 INFO L225 Difference]: With dead ends: 222 [2022-07-19 21:59:36,987 INFO L226 Difference]: Without dead ends: 131 [2022-07-19 21:59:36,988 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 98 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-07-19 21:59:36,989 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 25 mSDsluCounter, 705 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 819 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 99 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 21:59:36,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 819 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 27 Invalid, 0 Unknown, 99 Unchecked, 0.0s Time] [2022-07-19 21:59:36,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-07-19 21:59:37,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2022-07-19 21:59:37,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 95 states have (on average 1.2) internal successors, (114), 97 states have internal predecessors, (114), 22 states have call successors, (22), 12 states have call predecessors, (22), 13 states have return successors, (25), 21 states have call predecessors, (25), 21 states have call successors, (25) [2022-07-19 21:59:37,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 161 transitions. [2022-07-19 21:59:37,007 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 161 transitions. Word has length 87 [2022-07-19 21:59:37,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:59:37,007 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 161 transitions. [2022-07-19 21:59:37,007 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.333333333333333) internal successors, (52), 10 states have internal predecessors, (52), 5 states have call successors, (11), 3 states have call predecessors, (11), 4 states have return successors, (9), 5 states have call predecessors, (9), 5 states have call successors, (9) [2022-07-19 21:59:37,008 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 161 transitions. [2022-07-19 21:59:37,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-19 21:59:37,009 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:59:37,009 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:59:37,035 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 21:59:37,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:37,226 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:59:37,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:59:37,227 INFO L85 PathProgramCache]: Analyzing trace with hash -729368046, now seen corresponding path program 1 times [2022-07-19 21:59:37,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:59:37,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1424356362] [2022-07-19 21:59:37,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:37,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:59:37,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:37,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:59:37,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:37,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:59:37,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:37,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:59:37,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:37,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:37,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:37,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:59:37,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:37,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 21:59:37,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:37,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 21:59:37,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:37,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 21:59:37,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:37,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 21:59:37,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:37,426 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-19 21:59:37,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:59:37,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1424356362] [2022-07-19 21:59:37,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1424356362] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:59:37,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1522578433] [2022-07-19 21:59:37,427 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:37,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:37,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:59:37,429 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 21:59:37,457 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 21:59:37,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:37,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 2522 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 21:59:37,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:59:37,861 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-19 21:59:37,862 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:59:37,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1522578433] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:59:37,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:59:37,862 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-19 21:59:37,862 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454103741] [2022-07-19 21:59:37,862 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:59:37,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:59:37,863 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:59:37,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:59:37,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:59:37,864 INFO L87 Difference]: Start difference. First operand 131 states and 161 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-19 21:59:37,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:59:37,889 INFO L93 Difference]: Finished difference Result 231 states and 291 transitions. [2022-07-19 21:59:37,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:59:37,889 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 87 [2022-07-19 21:59:37,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:59:37,890 INFO L225 Difference]: With dead ends: 231 [2022-07-19 21:59:37,890 INFO L226 Difference]: Without dead ends: 140 [2022-07-19 21:59:37,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:59:37,891 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 20 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 21:59:37,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 349 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 21:59:37,892 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2022-07-19 21:59:37,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 123. [2022-07-19 21:59:37,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 88 states have (on average 1.1931818181818181) internal successors, (105), 89 states have internal predecessors, (105), 22 states have call successors, (22), 12 states have call predecessors, (22), 12 states have return successors, (24), 21 states have call predecessors, (24), 21 states have call successors, (24) [2022-07-19 21:59:37,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 151 transitions. [2022-07-19 21:59:37,899 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 151 transitions. Word has length 87 [2022-07-19 21:59:37,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:59:37,899 INFO L495 AbstractCegarLoop]: Abstraction has 123 states and 151 transitions. [2022-07-19 21:59:37,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-19 21:59:37,900 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 151 transitions. [2022-07-19 21:59:37,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-19 21:59:37,901 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:59:37,901 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-19 21:59:37,930 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 21:59:38,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:38,123 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:59:38,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:59:38,124 INFO L85 PathProgramCache]: Analyzing trace with hash -2043691690, now seen corresponding path program 2 times [2022-07-19 21:59:38,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:59:38,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693940340] [2022-07-19 21:59:38,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:38,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:59:38,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:38,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:59:38,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:38,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:59:38,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:38,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:59:38,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:38,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:38,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:38,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:59:38,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:38,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 21:59:38,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:38,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 21:59:38,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:38,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 21:59:38,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:38,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 21:59:38,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:38,382 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-19 21:59:38,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:59:38,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693940340] [2022-07-19 21:59:38,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693940340] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:59:38,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2010405113] [2022-07-19 21:59:38,383 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 21:59:38,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:38,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:59:38,384 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:59:38,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 21:59:38,765 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-19 21:59:38,765 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 21:59:38,775 INFO L263 TraceCheckSpWp]: Trace formula consists of 2334 conjuncts, 27 conjunts are in the unsatisfiable core [2022-07-19 21:59:38,779 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:59:38,825 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-19 21:59:38,825 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 20 [2022-07-19 21:59:38,829 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 21:59:38,830 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-19 21:59:39,175 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-19 21:59:39,175 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:59:39,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2010405113] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:59:39,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:59:39,176 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [10] total 17 [2022-07-19 21:59:39,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608200548] [2022-07-19 21:59:39,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:59:39,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:59:39,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:59:39,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:59:39,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2022-07-19 21:59:39,177 INFO L87 Difference]: Start difference. First operand 123 states and 151 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-19 21:59:39,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:59:39,420 INFO L93 Difference]: Finished difference Result 226 states and 276 transitions. [2022-07-19 21:59:39,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 21:59:39,421 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 91 [2022-07-19 21:59:39,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:59:39,422 INFO L225 Difference]: With dead ends: 226 [2022-07-19 21:59:39,422 INFO L226 Difference]: Without dead ends: 160 [2022-07-19 21:59:39,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=389, Unknown=0, NotChecked=0, Total=462 [2022-07-19 21:59:39,423 INFO L413 NwaCegarLoop]: 131 mSDtfsCounter, 64 mSDsluCounter, 373 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 504 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 101 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 21:59:39,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 504 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 101 Unchecked, 0.1s Time] [2022-07-19 21:59:39,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2022-07-19 21:59:39,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 160. [2022-07-19 21:59:39,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 160 states, 122 states have (on average 1.2131147540983607) internal successors, (148), 125 states have internal predecessors, (148), 23 states have call successors, (23), 13 states have call predecessors, (23), 14 states have return successors, (26), 21 states have call predecessors, (26), 22 states have call successors, (26) [2022-07-19 21:59:39,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 197 transitions. [2022-07-19 21:59:39,432 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 197 transitions. Word has length 91 [2022-07-19 21:59:39,432 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:59:39,433 INFO L495 AbstractCegarLoop]: Abstraction has 160 states and 197 transitions. [2022-07-19 21:59:39,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-19 21:59:39,433 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 197 transitions. [2022-07-19 21:59:39,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-19 21:59:39,434 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:59:39,434 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:59:39,467 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 21:59:39,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:39,649 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:59:39,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:59:39,649 INFO L85 PathProgramCache]: Analyzing trace with hash 971411928, now seen corresponding path program 2 times [2022-07-19 21:59:39,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:59:39,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015970040] [2022-07-19 21:59:39,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:39,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:59:39,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:39,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:59:39,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:39,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:59:39,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:39,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:59:39,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:39,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:39,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:39,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:59:39,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:39,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 21:59:39,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:39,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 21:59:39,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:39,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 21:59:39,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:39,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 21:59:39,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:39,927 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-19 21:59:39,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:59:39,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015970040] [2022-07-19 21:59:39,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015970040] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:59:39,928 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:59:39,928 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:59:39,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1593979884] [2022-07-19 21:59:39,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:59:39,929 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:59:39,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:59:39,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:59:39,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:59:39,930 INFO L87 Difference]: Start difference. First operand 160 states and 197 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-19 21:59:40,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:59:40,357 INFO L93 Difference]: Finished difference Result 259 states and 316 transitions. [2022-07-19 21:59:40,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 21:59:40,358 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 91 [2022-07-19 21:59:40,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:59:40,360 INFO L225 Difference]: With dead ends: 259 [2022-07-19 21:59:40,360 INFO L226 Difference]: Without dead ends: 187 [2022-07-19 21:59:40,360 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2022-07-19 21:59:40,362 INFO L413 NwaCegarLoop]: 109 mSDtfsCounter, 136 mSDsluCounter, 163 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 272 SdHoareTripleChecker+Invalid, 521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 21:59:40,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 272 Invalid, 521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 21:59:40,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-07-19 21:59:40,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 169. [2022-07-19 21:59:40,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 169 states, 130 states have (on average 1.2076923076923076) internal successors, (157), 134 states have internal predecessors, (157), 23 states have call successors, (23), 13 states have call predecessors, (23), 15 states have return successors, (29), 21 states have call predecessors, (29), 22 states have call successors, (29) [2022-07-19 21:59:40,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 169 states to 169 states and 209 transitions. [2022-07-19 21:59:40,374 INFO L78 Accepts]: Start accepts. Automaton has 169 states and 209 transitions. Word has length 91 [2022-07-19 21:59:40,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:59:40,375 INFO L495 AbstractCegarLoop]: Abstraction has 169 states and 209 transitions. [2022-07-19 21:59:40,375 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 3 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-19 21:59:40,375 INFO L276 IsEmpty]: Start isEmpty. Operand 169 states and 209 transitions. [2022-07-19 21:59:40,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-19 21:59:40,378 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:59:40,378 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:59:40,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 21:59:40,379 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:59:40,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:59:40,379 INFO L85 PathProgramCache]: Analyzing trace with hash -875101412, now seen corresponding path program 1 times [2022-07-19 21:59:40,379 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:59:40,379 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1578933370] [2022-07-19 21:59:40,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:40,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:59:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:40,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:59:40,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:40,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:59:40,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:40,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:59:40,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:40,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:40,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:40,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:59:40,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:40,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 21:59:40,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:40,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 21:59:40,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:40,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 21:59:40,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:40,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 21:59:40,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:40,649 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 6 proven. 12 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-19 21:59:40,649 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:59:40,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1578933370] [2022-07-19 21:59:40,649 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1578933370] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:59:40,649 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357048151] [2022-07-19 21:59:40,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:40,650 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:40,650 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:59:40,651 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:59:40,679 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 21:59:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:41,080 INFO L263 TraceCheckSpWp]: Trace formula consists of 2531 conjuncts, 42 conjunts are in the unsatisfiable core [2022-07-19 21:59:41,084 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:59:41,284 INFO L356 Elim1Store]: treesize reduction 23, result has 28.1 percent of original size [2022-07-19 21:59:41,284 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-07-19 21:59:41,614 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 40 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-19 21:59:41,615 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:59:41,939 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-19 21:59:41,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357048151] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:59:41,940 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:59:41,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 9] total 24 [2022-07-19 21:59:41,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828958418] [2022-07-19 21:59:41,941 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:59:41,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-19 21:59:41,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:59:41,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-19 21:59:41,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=473, Unknown=0, NotChecked=0, Total=552 [2022-07-19 21:59:41,942 INFO L87 Difference]: Start difference. First operand 169 states and 209 transitions. Second operand has 24 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 22 states have internal predecessors, (100), 4 states have call successors, (19), 4 states have call predecessors, (19), 7 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-19 21:59:43,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:59:43,362 INFO L93 Difference]: Finished difference Result 368 states and 465 transitions. [2022-07-19 21:59:43,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-19 21:59:43,362 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 22 states have internal predecessors, (100), 4 states have call successors, (19), 4 states have call predecessors, (19), 7 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 91 [2022-07-19 21:59:43,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:59:43,365 INFO L225 Difference]: With dead ends: 368 [2022-07-19 21:59:43,365 INFO L226 Difference]: Without dead ends: 233 [2022-07-19 21:59:43,367 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 186 SyntacticMatches, 4 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 310 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=321, Invalid=1659, Unknown=0, NotChecked=0, Total=1980 [2022-07-19 21:59:43,368 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 284 mSDsluCounter, 442 mSDsCounter, 0 mSdLazyCounter, 1389 mSolverCounterSat, 62 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 544 SdHoareTripleChecker+Invalid, 1777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 62 IncrementalHoareTripleChecker+Valid, 1389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 326 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 21:59:43,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 544 Invalid, 1777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [62 Valid, 1389 Invalid, 0 Unknown, 326 Unchecked, 0.9s Time] [2022-07-19 21:59:43,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2022-07-19 21:59:43,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 222. [2022-07-19 21:59:43,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 222 states, 173 states have (on average 1.1734104046242775) internal successors, (203), 183 states have internal predecessors, (203), 25 states have call successors, (25), 15 states have call predecessors, (25), 23 states have return successors, (49), 23 states have call predecessors, (49), 24 states have call successors, (49) [2022-07-19 21:59:43,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 222 states to 222 states and 277 transitions. [2022-07-19 21:59:43,380 INFO L78 Accepts]: Start accepts. Automaton has 222 states and 277 transitions. Word has length 91 [2022-07-19 21:59:43,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:59:43,381 INFO L495 AbstractCegarLoop]: Abstraction has 222 states and 277 transitions. [2022-07-19 21:59:43,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 23 states have (on average 4.3478260869565215) internal successors, (100), 22 states have internal predecessors, (100), 4 states have call successors, (19), 4 states have call predecessors, (19), 7 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-19 21:59:43,381 INFO L276 IsEmpty]: Start isEmpty. Operand 222 states and 277 transitions. [2022-07-19 21:59:43,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-19 21:59:43,383 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:59:43,383 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:59:43,410 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-19 21:59:43,595 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:43,596 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:59:43,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:59:43,596 INFO L85 PathProgramCache]: Analyzing trace with hash -1597930877, now seen corresponding path program 1 times [2022-07-19 21:59:43,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:59:43,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793382424] [2022-07-19 21:59:43,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:43,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:59:43,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:43,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:59:43,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:43,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:59:43,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:43,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:59:43,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:43,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:43,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:59:43,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:43,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:59:43,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:43,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 21:59:43,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:43,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 21:59:43,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:43,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 21:59:43,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:43,793 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-07-19 21:59:43,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:59:43,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793382424] [2022-07-19 21:59:43,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793382424] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:59:43,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [172518466] [2022-07-19 21:59:43,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:43,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:43,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:59:43,795 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:59:43,826 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 21:59:44,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:44,222 INFO L263 TraceCheckSpWp]: Trace formula consists of 2533 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 21:59:44,225 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:59:44,233 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-19 21:59:44,235 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:59:44,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [172518466] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:59:44,236 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:59:44,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-19 21:59:44,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133382519] [2022-07-19 21:59:44,236 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:59:44,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:59:44,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:59:44,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:59:44,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:59:44,238 INFO L87 Difference]: Start difference. First operand 222 states and 277 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-19 21:59:44,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:59:44,261 INFO L93 Difference]: Finished difference Result 404 states and 514 transitions. [2022-07-19 21:59:44,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:59:44,261 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 93 [2022-07-19 21:59:44,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:59:44,263 INFO L225 Difference]: With dead ends: 404 [2022-07-19 21:59:44,263 INFO L226 Difference]: Without dead ends: 207 [2022-07-19 21:59:44,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:59:44,264 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 9 mSDsluCounter, 226 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 342 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 21:59:44,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 342 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 21:59:44,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-07-19 21:59:44,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 198. [2022-07-19 21:59:44,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 152 states have (on average 1.144736842105263) internal successors, (174), 159 states have internal predecessors, (174), 25 states have call successors, (25), 15 states have call predecessors, (25), 20 states have return successors, (40), 23 states have call predecessors, (40), 24 states have call successors, (40) [2022-07-19 21:59:44,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 239 transitions. [2022-07-19 21:59:44,283 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 239 transitions. Word has length 93 [2022-07-19 21:59:44,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:59:44,284 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 239 transitions. [2022-07-19 21:59:44,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-19 21:59:44,284 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 239 transitions. [2022-07-19 21:59:44,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-19 21:59:44,285 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:59:44,285 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:59:44,315 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-19 21:59:44,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:44,496 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:59:44,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:59:44,496 INFO L85 PathProgramCache]: Analyzing trace with hash 1845910727, now seen corresponding path program 1 times [2022-07-19 21:59:44,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:59:44,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720676953] [2022-07-19 21:59:44,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:44,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:59:44,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:44,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:59:44,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:44,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:59:44,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:44,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:59:44,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:44,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:44,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:44,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:59:44,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:44,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:59:44,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:44,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 21:59:44,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:44,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 21:59:44,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:44,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 21:59:44,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:44,660 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-19 21:59:44,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:59:44,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720676953] [2022-07-19 21:59:44,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720676953] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:59:44,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [993372196] [2022-07-19 21:59:44,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:44,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:44,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:59:44,663 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:59:44,664 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-19 21:59:45,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:45,101 INFO L263 TraceCheckSpWp]: Trace formula consists of 2535 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 21:59:45,104 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:59:45,115 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-19 21:59:45,115 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:59:45,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [993372196] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:59:45,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:59:45,116 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-19 21:59:45,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670494370] [2022-07-19 21:59:45,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:59:45,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:59:45,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:59:45,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:59:45,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:59:45,117 INFO L87 Difference]: Start difference. First operand 198 states and 239 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-19 21:59:45,139 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:59:45,139 INFO L93 Difference]: Finished difference Result 350 states and 436 transitions. [2022-07-19 21:59:45,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:59:45,140 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 93 [2022-07-19 21:59:45,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:59:45,141 INFO L225 Difference]: With dead ends: 350 [2022-07-19 21:59:45,141 INFO L226 Difference]: Without dead ends: 182 [2022-07-19 21:59:45,142 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:59:45,142 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 34 mSDsluCounter, 224 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 340 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 21:59:45,143 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 340 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 21:59:45,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-07-19 21:59:45,150 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 180. [2022-07-19 21:59:45,150 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 180 states, 136 states have (on average 1.125) internal successors, (153), 141 states have internal predecessors, (153), 25 states have call successors, (25), 15 states have call predecessors, (25), 18 states have return successors, (36), 23 states have call predecessors, (36), 24 states have call successors, (36) [2022-07-19 21:59:45,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 180 states to 180 states and 214 transitions. [2022-07-19 21:59:45,151 INFO L78 Accepts]: Start accepts. Automaton has 180 states and 214 transitions. Word has length 93 [2022-07-19 21:59:45,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:59:45,152 INFO L495 AbstractCegarLoop]: Abstraction has 180 states and 214 transitions. [2022-07-19 21:59:45,152 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-19 21:59:45,152 INFO L276 IsEmpty]: Start isEmpty. Operand 180 states and 214 transitions. [2022-07-19 21:59:45,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-19 21:59:45,153 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:59:45,153 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:59:45,181 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2022-07-19 21:59:45,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-19 21:59:45,380 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:59:45,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:59:45,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1337532371, now seen corresponding path program 1 times [2022-07-19 21:59:45,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:59:45,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399410655] [2022-07-19 21:59:45,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:45,381 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:59:45,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:45,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:59:45,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:45,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:59:45,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:45,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:59:45,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:45,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:45,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:45,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:59:45,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:45,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:59:45,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:45,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 21:59:45,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:45,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 21:59:45,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:45,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 21:59:45,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:45,628 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-07-19 21:59:45,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:59:45,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399410655] [2022-07-19 21:59:45,628 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399410655] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:59:45,628 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1102193349] [2022-07-19 21:59:45,629 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:45,629 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:45,629 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:59:45,630 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:59:45,631 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-19 21:59:45,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:45,999 INFO L263 TraceCheckSpWp]: Trace formula consists of 2537 conjuncts, 35 conjunts are in the unsatisfiable core [2022-07-19 21:59:46,004 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:59:46,098 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 21:59:46,431 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 21:59:46,433 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 21:59:46,433 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 11 [2022-07-19 21:59:46,452 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-19 21:59:46,453 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:59:46,453 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1102193349] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:59:46,453 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:59:46,453 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2022-07-19 21:59:46,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1040584514] [2022-07-19 21:59:46,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:59:46,454 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:59:46,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:59:46,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:59:46,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2022-07-19 21:59:46,454 INFO L87 Difference]: Start difference. First operand 180 states and 214 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 9 states have internal predecessors, (58), 6 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2022-07-19 21:59:46,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:59:46,618 INFO L93 Difference]: Finished difference Result 367 states and 438 transitions. [2022-07-19 21:59:46,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:59:46,619 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 9 states have internal predecessors, (58), 6 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) Word has length 97 [2022-07-19 21:59:46,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:59:46,620 INFO L225 Difference]: With dead ends: 367 [2022-07-19 21:59:46,621 INFO L226 Difference]: Without dead ends: 248 [2022-07-19 21:59:46,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 99 SyntacticMatches, 7 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2022-07-19 21:59:46,622 INFO L413 NwaCegarLoop]: 132 mSDtfsCounter, 22 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 887 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 21:59:46,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 887 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 101 Invalid, 0 Unknown, 25 Unchecked, 0.1s Time] [2022-07-19 21:59:46,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2022-07-19 21:59:46,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 233. [2022-07-19 21:59:46,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 179 states have (on average 1.1229050279329609) internal successors, (201), 185 states have internal predecessors, (201), 30 states have call successors, (30), 19 states have call predecessors, (30), 23 states have return successors, (47), 28 states have call predecessors, (47), 29 states have call successors, (47) [2022-07-19 21:59:46,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 278 transitions. [2022-07-19 21:59:46,634 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 278 transitions. Word has length 97 [2022-07-19 21:59:46,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:59:46,634 INFO L495 AbstractCegarLoop]: Abstraction has 233 states and 278 transitions. [2022-07-19 21:59:46,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 9 states have internal predecessors, (58), 6 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2022-07-19 21:59:46,635 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 278 transitions. [2022-07-19 21:59:46,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-19 21:59:46,636 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:59:46,636 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:59:46,662 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-19 21:59:46,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-19 21:59:46,855 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:59:46,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:59:46,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1898232149, now seen corresponding path program 1 times [2022-07-19 21:59:46,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:59:46,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [488102808] [2022-07-19 21:59:46,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:46,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:59:46,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:47,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:59:47,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:47,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:59:47,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:47,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:59:47,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:47,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:47,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:47,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:59:47,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:47,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:59:47,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:47,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 21:59:47,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:47,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 21:59:47,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:47,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 21:59:47,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:47,120 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2022-07-19 21:59:47,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:59:47,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [488102808] [2022-07-19 21:59:47,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [488102808] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:59:47,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1922426894] [2022-07-19 21:59:47,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:47,121 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:47,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:59:47,123 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:59:47,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-19 21:59:47,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:47,491 INFO L263 TraceCheckSpWp]: Trace formula consists of 2542 conjuncts, 39 conjunts are in the unsatisfiable core [2022-07-19 21:59:47,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:59:47,593 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 21:59:47,930 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 21:59:47,932 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 21:59:47,932 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 18 treesize of output 11 [2022-07-19 21:59:47,952 INFO L134 CoverageAnalysis]: Checked inductivity of 69 backedges. 46 proven. 0 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-19 21:59:47,952 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:59:47,952 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1922426894] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:59:47,952 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:59:47,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [10] total 19 [2022-07-19 21:59:47,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741191037] [2022-07-19 21:59:47,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:59:47,953 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 21:59:47,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:59:47,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 21:59:47,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2022-07-19 21:59:47,954 INFO L87 Difference]: Start difference. First operand 233 states and 278 transitions. Second operand has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 9 states have internal predecessors, (58), 6 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2022-07-19 21:59:48,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:59:48,086 INFO L93 Difference]: Finished difference Result 385 states and 441 transitions. [2022-07-19 21:59:48,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 21:59:48,087 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 9 states have internal predecessors, (58), 6 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) Word has length 97 [2022-07-19 21:59:48,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:59:48,088 INFO L225 Difference]: With dead ends: 385 [2022-07-19 21:59:48,088 INFO L226 Difference]: Without dead ends: 266 [2022-07-19 21:59:48,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 99 SyntacticMatches, 7 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 53 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=404, Unknown=0, NotChecked=0, Total=462 [2022-07-19 21:59:48,089 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 25 mSDsluCounter, 537 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 650 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 21:59:48,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 650 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 80 Invalid, 0 Unknown, 25 Unchecked, 0.1s Time] [2022-07-19 21:59:48,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 266 states. [2022-07-19 21:59:48,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 266 to 245. [2022-07-19 21:59:48,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 190 states have (on average 1.1157894736842104) internal successors, (212), 197 states have internal predecessors, (212), 29 states have call successors, (29), 20 states have call predecessors, (29), 25 states have return successors, (43), 27 states have call predecessors, (43), 28 states have call successors, (43) [2022-07-19 21:59:48,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 284 transitions. [2022-07-19 21:59:48,100 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 284 transitions. Word has length 97 [2022-07-19 21:59:48,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:59:48,101 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 284 transitions. [2022-07-19 21:59:48,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 9 states have internal predecessors, (58), 6 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (9), 7 states have call predecessors, (9), 6 states have call successors, (9) [2022-07-19 21:59:48,101 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 284 transitions. [2022-07-19 21:59:48,102 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-19 21:59:48,102 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:59:48,103 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:59:48,135 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-19 21:59:48,321 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-19 21:59:48,321 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:59:48,321 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:59:48,321 INFO L85 PathProgramCache]: Analyzing trace with hash 2013780926, now seen corresponding path program 1 times [2022-07-19 21:59:48,322 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:59:48,322 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [422891241] [2022-07-19 21:59:48,322 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:48,322 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:59:48,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:48,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:59:48,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:48,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:59:48,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:48,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:59:48,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:48,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:48,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:48,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:59:48,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:48,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:59:48,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:48,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 21:59:48,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:48,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:48,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:48,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 21:59:48,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:48,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 21:59:48,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:48,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 21:59:48,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:48,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-19 21:59:48,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:48,610 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-19 21:59:48,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:59:48,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [422891241] [2022-07-19 21:59:48,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [422891241] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:59:48,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:59:48,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 21:59:48,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946462133] [2022-07-19 21:59:48,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:59:48,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:59:48,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:59:48,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:59:48,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:59:48,613 INFO L87 Difference]: Start difference. First operand 245 states and 284 transitions. Second operand has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-19 21:59:49,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:59:49,106 INFO L93 Difference]: Finished difference Result 263 states and 303 transitions. [2022-07-19 21:59:49,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 21:59:49,107 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 109 [2022-07-19 21:59:49,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:59:49,108 INFO L225 Difference]: With dead ends: 263 [2022-07-19 21:59:49,108 INFO L226 Difference]: Without dead ends: 261 [2022-07-19 21:59:49,109 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2022-07-19 21:59:49,109 INFO L413 NwaCegarLoop]: 104 mSDtfsCounter, 139 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 632 mSolverCounterSat, 61 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 325 SdHoareTripleChecker+Invalid, 693 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 61 IncrementalHoareTripleChecker+Valid, 632 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 21:59:49,110 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 325 Invalid, 693 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [61 Valid, 632 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 21:59:49,114 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2022-07-19 21:59:49,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 250. [2022-07-19 21:59:49,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 193 states have (on average 1.1139896373056994) internal successors, (215), 200 states have internal predecessors, (215), 30 states have call successors, (30), 21 states have call predecessors, (30), 26 states have return successors, (44), 28 states have call predecessors, (44), 29 states have call successors, (44) [2022-07-19 21:59:49,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 289 transitions. [2022-07-19 21:59:49,124 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 289 transitions. Word has length 109 [2022-07-19 21:59:49,125 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:59:49,125 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 289 transitions. [2022-07-19 21:59:49,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 5.777777777777778) internal successors, (52), 6 states have internal predecessors, (52), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-19 21:59:49,125 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 289 transitions. [2022-07-19 21:59:49,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-19 21:59:49,127 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:59:49,127 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:59:49,127 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 21:59:49,127 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:59:49,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:59:49,128 INFO L85 PathProgramCache]: Analyzing trace with hash 920679761, now seen corresponding path program 1 times [2022-07-19 21:59:49,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:59:49,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42405082] [2022-07-19 21:59:49,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:49,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:59:49,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:49,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:59:49,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:49,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:59:49,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:49,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:59:49,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:49,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:49,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:49,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:59:49,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:49,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:59:49,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:49,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 21:59:49,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:49,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 21:59:49,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:49,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 21:59:49,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:49,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:49,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:49,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:49,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:49,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 21:59:49,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:49,647 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-19 21:59:49,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:59:49,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42405082] [2022-07-19 21:59:49,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [42405082] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:59:49,647 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791314519] [2022-07-19 21:59:49,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:49,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:49,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:59:49,649 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:59:49,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-19 21:59:50,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:50,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 2629 conjuncts, 38 conjunts are in the unsatisfiable core [2022-07-19 21:59:50,099 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:59:50,122 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 21:59:50,125 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 21:59:50,369 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-19 21:59:50,371 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2022-07-19 21:59:50,393 INFO L134 CoverageAnalysis]: Checked inductivity of 77 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-19 21:59:50,393 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:59:50,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791314519] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:59:50,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:59:50,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [15] total 23 [2022-07-19 21:59:50,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658837114] [2022-07-19 21:59:50,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:59:50,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:59:50,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:59:50,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:59:50,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2022-07-19 21:59:50,394 INFO L87 Difference]: Start difference. First operand 250 states and 289 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 9 states have internal predecessors, (79), 4 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-19 21:59:50,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:59:50,660 INFO L93 Difference]: Finished difference Result 367 states and 423 transitions. [2022-07-19 21:59:50,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 21:59:50,661 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 9 states have internal predecessors, (79), 4 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 111 [2022-07-19 21:59:50,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:59:50,662 INFO L225 Difference]: With dead ends: 367 [2022-07-19 21:59:50,662 INFO L226 Difference]: Without dead ends: 257 [2022-07-19 21:59:50,663 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 127 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=654, Unknown=0, NotChecked=0, Total=756 [2022-07-19 21:59:50,664 INFO L413 NwaCegarLoop]: 110 mSDtfsCounter, 51 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 157 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 674 SdHoareTripleChecker+Invalid, 187 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 157 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 30 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 21:59:50,664 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 674 Invalid, 187 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 157 Invalid, 0 Unknown, 30 Unchecked, 0.1s Time] [2022-07-19 21:59:50,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-07-19 21:59:50,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 257. [2022-07-19 21:59:50,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 198 states have (on average 1.1111111111111112) internal successors, (220), 204 states have internal predecessors, (220), 31 states have call successors, (31), 22 states have call predecessors, (31), 27 states have return successors, (44), 30 states have call predecessors, (44), 30 states have call successors, (44) [2022-07-19 21:59:50,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 295 transitions. [2022-07-19 21:59:50,674 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 295 transitions. Word has length 111 [2022-07-19 21:59:50,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:59:50,675 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 295 transitions. [2022-07-19 21:59:50,675 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 9 states have internal predecessors, (79), 4 states have call successors, (14), 3 states have call predecessors, (14), 4 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-19 21:59:50,675 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 295 transitions. [2022-07-19 21:59:50,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-19 21:59:50,676 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:59:50,677 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:59:50,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-19 21:59:50,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-19 21:59:50,895 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:59:50,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:59:50,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1859335804, now seen corresponding path program 1 times [2022-07-19 21:59:50,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:59:50,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [500083493] [2022-07-19 21:59:50,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:50,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:59:51,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:51,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:59:51,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:51,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:59:51,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:51,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:59:51,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:51,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:51,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:51,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:59:51,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:51,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:59:51,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:51,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 21:59:51,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:51,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:51,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:51,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 21:59:51,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:51,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-19 21:59:51,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:51,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 21:59:51,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:51,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-19 21:59:51,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:51,468 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 4 proven. 50 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-19 21:59:51,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:59:51,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [500083493] [2022-07-19 21:59:51,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [500083493] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:59:51,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712683776] [2022-07-19 21:59:51,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:51,470 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:51,471 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:59:51,472 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:59:51,480 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-19 21:59:51,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:51,918 INFO L263 TraceCheckSpWp]: Trace formula consists of 2587 conjuncts, 35 conjunts are in the unsatisfiable core [2022-07-19 21:59:51,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:59:52,021 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 21:59:52,302 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 47 proven. 26 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-19 21:59:52,302 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:59:52,492 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2022-07-19 21:59:52,580 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-07-19 21:59:52,580 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712683776] provided 1 perfect and 1 imperfect interpolant sequences [2022-07-19 21:59:52,580 INFO L184 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2022-07-19 21:59:52,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [14, 12] total 30 [2022-07-19 21:59:52,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1745459305] [2022-07-19 21:59:52,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:59:52,581 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 21:59:52,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:59:52,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 21:59:52,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=81, Invalid=789, Unknown=0, NotChecked=0, Total=870 [2022-07-19 21:59:52,582 INFO L87 Difference]: Start difference. First operand 257 states and 295 transitions. Second operand has 10 states, 10 states have (on average 5.0) internal successors, (50), 8 states have internal predecessors, (50), 6 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2022-07-19 21:59:53,019 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:59:53,020 INFO L93 Difference]: Finished difference Result 341 states and 389 transitions. [2022-07-19 21:59:53,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 21:59:53,020 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 8 states have internal predecessors, (50), 6 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) Word has length 113 [2022-07-19 21:59:53,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:59:53,022 INFO L225 Difference]: With dead ends: 341 [2022-07-19 21:59:53,022 INFO L226 Difference]: Without dead ends: 241 [2022-07-19 21:59:53,023 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 265 GetRequests, 230 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 202 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=102, Invalid=1020, Unknown=0, NotChecked=0, Total=1122 [2022-07-19 21:59:53,023 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 70 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 443 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 315 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 443 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 21:59:53,023 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 315 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 443 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 21:59:53,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2022-07-19 21:59:53,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 184. [2022-07-19 21:59:53,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 184 states, 139 states have (on average 1.1151079136690647) internal successors, (155), 144 states have internal predecessors, (155), 24 states have call successors, (24), 16 states have call predecessors, (24), 20 states have return successors, (31), 23 states have call predecessors, (31), 23 states have call successors, (31) [2022-07-19 21:59:53,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 210 transitions. [2022-07-19 21:59:53,035 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 210 transitions. Word has length 113 [2022-07-19 21:59:53,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:59:53,035 INFO L495 AbstractCegarLoop]: Abstraction has 184 states and 210 transitions. [2022-07-19 21:59:53,035 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.0) internal successors, (50), 8 states have internal predecessors, (50), 6 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 7 states have call predecessors, (12), 6 states have call successors, (12) [2022-07-19 21:59:53,036 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 210 transitions. [2022-07-19 21:59:53,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-07-19 21:59:53,037 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:59:53,037 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:59:53,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-19 21:59:53,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-19 21:59:53,264 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:59:53,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:59:53,264 INFO L85 PathProgramCache]: Analyzing trace with hash 1216300311, now seen corresponding path program 1 times [2022-07-19 21:59:53,264 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:59:53,264 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [379116844] [2022-07-19 21:59:53,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:53,265 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:59:53,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:53,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:59:53,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:53,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:59:53,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:53,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:59:53,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:53,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:53,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:53,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:59:53,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:53,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:59:53,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:53,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 21:59:53,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:53,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 21:59:53,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:53,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 21:59:53,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:53,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:53,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:53,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:53,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:53,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-19 21:59:53,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:53,564 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 14 proven. 8 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2022-07-19 21:59:53,571 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:59:53,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [379116844] [2022-07-19 21:59:53,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [379116844] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:59:53,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1590436376] [2022-07-19 21:59:53,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:53,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:53,572 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:59:53,584 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:59:53,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-19 21:59:54,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:54,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 2636 conjuncts, 49 conjunts are in the unsatisfiable core [2022-07-19 21:59:54,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:59:54,530 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 21:59:54,532 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 21:59:54,532 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 20 treesize of output 13 [2022-07-19 21:59:54,664 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 47 proven. 22 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-07-19 21:59:54,664 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:59:55,050 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2022-07-19 21:59:55,136 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-19 21:59:55,137 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 19 [2022-07-19 21:59:55,153 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-07-19 21:59:55,153 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1590436376] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:59:55,153 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:59:55,153 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 16, 13] total 32 [2022-07-19 21:59:55,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122848441] [2022-07-19 21:59:55,154 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:59:55,154 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2022-07-19 21:59:55,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:59:55,155 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2022-07-19 21:59:55,155 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=913, Unknown=0, NotChecked=0, Total=992 [2022-07-19 21:59:55,155 INFO L87 Difference]: Start difference. First operand 184 states and 210 transitions. Second operand has 32 states, 27 states have (on average 5.185185185185185) internal successors, (140), 27 states have internal predecessors, (140), 14 states have call successors, (34), 7 states have call predecessors, (34), 8 states have return successors, (30), 11 states have call predecessors, (30), 14 states have call successors, (30) [2022-07-19 21:59:57,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:59:57,643 INFO L93 Difference]: Finished difference Result 348 states and 401 transitions. [2022-07-19 21:59:57,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2022-07-19 21:59:57,643 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 27 states have (on average 5.185185185185185) internal successors, (140), 27 states have internal predecessors, (140), 14 states have call successors, (34), 7 states have call predecessors, (34), 8 states have return successors, (30), 11 states have call predecessors, (30), 14 states have call successors, (30) Word has length 115 [2022-07-19 21:59:57,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:59:57,644 INFO L225 Difference]: With dead ends: 348 [2022-07-19 21:59:57,645 INFO L226 Difference]: Without dead ends: 198 [2022-07-19 21:59:57,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 226 SyntacticMatches, 8 SemanticMatches, 70 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1034 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=434, Invalid=4674, Unknown=4, NotChecked=0, Total=5112 [2022-07-19 21:59:57,647 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 278 mSDsluCounter, 941 mSDsCounter, 0 mSdLazyCounter, 2222 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 289 SdHoareTripleChecker+Valid, 1048 SdHoareTripleChecker+Invalid, 2607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 2222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 262 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 21:59:57,647 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [289 Valid, 1048 Invalid, 2607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 2222 Invalid, 0 Unknown, 262 Unchecked, 1.2s Time] [2022-07-19 21:59:57,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 198 states. [2022-07-19 21:59:57,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 198 to 154. [2022-07-19 21:59:57,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 113 states have (on average 1.0973451327433628) internal successors, (124), 116 states have internal predecessors, (124), 23 states have call successors, (23), 15 states have call predecessors, (23), 17 states have return successors, (25), 22 states have call predecessors, (25), 22 states have call successors, (25) [2022-07-19 21:59:57,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 172 transitions. [2022-07-19 21:59:57,657 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 172 transitions. Word has length 115 [2022-07-19 21:59:57,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:59:57,657 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 172 transitions. [2022-07-19 21:59:57,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 27 states have (on average 5.185185185185185) internal successors, (140), 27 states have internal predecessors, (140), 14 states have call successors, (34), 7 states have call predecessors, (34), 8 states have return successors, (30), 11 states have call predecessors, (30), 14 states have call successors, (30) [2022-07-19 21:59:57,658 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 172 transitions. [2022-07-19 21:59:57,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-19 21:59:57,658 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:59:57,659 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:59:57,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2022-07-19 21:59:57,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-19 21:59:57,875 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:59:57,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:59:57,876 INFO L85 PathProgramCache]: Analyzing trace with hash -140184041, now seen corresponding path program 1 times [2022-07-19 21:59:57,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:59:57,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3344912] [2022-07-19 21:59:57,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:57,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:59:57,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:57,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:59:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:58,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:59:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:58,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:59:58,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:58,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:58,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:58,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:59:58,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:58,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:59:58,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:58,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 21:59:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:58,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 21:59:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:58,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 21:59:58,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:58,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:58,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:58,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:58,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:58,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 21:59:58,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:58,093 INFO L134 CoverageAnalysis]: Checked inductivity of 87 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2022-07-19 21:59:58,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:59:58,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3344912] [2022-07-19 21:59:58,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3344912] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:59:58,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:59:58,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 21:59:58,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821665139] [2022-07-19 21:59:58,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:59:58,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 21:59:58,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:59:58,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 21:59:58,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:59:58,096 INFO L87 Difference]: Start difference. First operand 154 states and 172 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 21:59:58,342 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:59:58,342 INFO L93 Difference]: Finished difference Result 244 states and 274 transitions. [2022-07-19 21:59:58,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:59:58,343 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 118 [2022-07-19 21:59:58,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:59:58,344 INFO L225 Difference]: With dead ends: 244 [2022-07-19 21:59:58,344 INFO L226 Difference]: Without dead ends: 156 [2022-07-19 21:59:58,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 21:59:58,345 INFO L413 NwaCegarLoop]: 97 mSDtfsCounter, 99 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 53 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 101 SdHoareTripleChecker+Valid, 158 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 53 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 21:59:58,345 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [101 Valid, 158 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [53 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 21:59:58,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-07-19 21:59:58,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 155. [2022-07-19 21:59:58,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 114 states have (on average 1.0964912280701755) internal successors, (125), 117 states have internal predecessors, (125), 23 states have call successors, (23), 15 states have call predecessors, (23), 17 states have return successors, (25), 22 states have call predecessors, (25), 22 states have call successors, (25) [2022-07-19 21:59:58,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 173 transitions. [2022-07-19 21:59:58,356 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 173 transitions. Word has length 118 [2022-07-19 21:59:58,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:59:58,356 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 173 transitions. [2022-07-19 21:59:58,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 3 states have internal predecessors, (54), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 21:59:58,356 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 173 transitions. [2022-07-19 21:59:58,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-19 21:59:58,358 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:59:58,358 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:59:58,358 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 21:59:58,358 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:59:58,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:59:58,363 INFO L85 PathProgramCache]: Analyzing trace with hash 693312025, now seen corresponding path program 1 times [2022-07-19 21:59:58,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:59:58,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387737103] [2022-07-19 21:59:58,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:58,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:59:59,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:59,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:59:59,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:59,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:59:59,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:59,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:59:59,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:59,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:59,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:59,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:59:59,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:59,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:59:59,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:59,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 21:59:59,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:59,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 21:59:59,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:59,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 21:59:59,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:59,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:59,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:59,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:59,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:59,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 21:59:59,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,060 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 28 proven. 1 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2022-07-19 22:00:00,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:00,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387737103] [2022-07-19 22:00:00,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387737103] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:00:00,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092392982] [2022-07-19 22:00:00,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:00,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:00,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:00:00,064 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:00:00,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-19 22:00:00,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,499 INFO L263 TraceCheckSpWp]: Trace formula consists of 2664 conjuncts, 89 conjunts are in the unsatisfiable core [2022-07-19 22:00:00,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:00:00,664 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 22:00:02,706 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_secure_zero_harness_~#buf~3#1.base_BEFORE_CALL_46| Int)) (< (+ (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_secure_zero_harness_~#buf~3#1.base_BEFORE_CALL_46|) 8) 1) |v_ULTIMATE.start_aws_byte_buf_secure_zero_harness_~#buf~3#1.base_BEFORE_CALL_46|)) is different from true [2022-07-19 22:00:04,798 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_secure_zero_harness_~#buf~3#1.base_BEFORE_CALL_47| Int)) (< (+ (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_secure_zero_harness_~#buf~3#1.base_BEFORE_CALL_47|) 8) 1) |v_ULTIMATE.start_aws_byte_buf_secure_zero_harness_~#buf~3#1.base_BEFORE_CALL_47|)) is different from true [2022-07-19 22:00:06,922 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_aws_byte_buf_secure_zero_~buf#1.base_BEFORE_CALL_21| Int)) (< (+ (select (select |c_#memory_$Pointer$.base| |v_aws_byte_buf_secure_zero_~buf#1.base_BEFORE_CALL_21|) 8) 1) |v_aws_byte_buf_secure_zero_~buf#1.base_BEFORE_CALL_21|)) is different from true [2022-07-19 22:00:25,990 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 22:00:25,992 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 9 [2022-07-19 22:00:30,571 WARN L855 $PredicateComparison]: unable to prove that (exists ((memset_impl_~sp~0.base Int)) (and (<= memset_impl_~sp~0.base |c_memset_impl_#in~s.base|) (exists ((v_ArrVal_1059 (Array Int Int))) (= (store |c_old(#memory_int)| memset_impl_~sp~0.base v_ArrVal_1059) |c_#memory_int|)))) is different from true [2022-07-19 22:00:30,599 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1059 (Array Int Int)) (memset_impl_~sp~0.base Int)) (and (<= memset_impl_~sp~0.base |c_my_memset_#in~s.base|) (= (store |c_old(#memory_int)| memset_impl_~sp~0.base v_ArrVal_1059) |c_#memory_int|))) is different from true [2022-07-19 22:00:30,619 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:00:30,620 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-07-19 22:00:30,643 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2022-07-19 22:00:42,724 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 16 proven. 16 refuted. 6 times theorem prover too weak. 12 trivial. 38 not checked. [2022-07-19 22:00:42,724 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:00:45,086 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_memset_impl_~sp~0.base_8 Int) (v_ArrVal_1067 (Array Int Int))) (or (< |c_aws_byte_buf_secure_zero_aws_secure_zero_~pBuf#1.base| v_memset_impl_~sp~0.base_8) (not (= (mod (select (select (store |c_#memory_int| v_memset_impl_~sp~0.base_8 v_ArrVal_1067) |c_aws_byte_buf_secure_zero_~buf#1.base|) (+ 16 |c_aws_byte_buf_secure_zero_~buf#1.offset|)) 18446744073709551616) 0)))) is different from false [2022-07-19 22:00:45,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092392982] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:00:45,088 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 22:00:45,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 29] total 50 [2022-07-19 22:00:45,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2044499569] [2022-07-19 22:00:45,088 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 22:00:45,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2022-07-19 22:00:45,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:45,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2022-07-19 22:00:45,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=162, Invalid=2193, Unknown=21, NotChecked=594, Total=2970 [2022-07-19 22:00:45,091 INFO L87 Difference]: Start difference. First operand 155 states and 173 transitions. Second operand has 50 states, 45 states have (on average 3.1555555555555554) internal successors, (142), 41 states have internal predecessors, (142), 18 states have call successors, (26), 12 states have call predecessors, (26), 13 states have return successors, (23), 17 states have call predecessors, (23), 17 states have call successors, (23) [2022-07-19 22:02:00,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:02:00,112 INFO L93 Difference]: Finished difference Result 297 states and 335 transitions. [2022-07-19 22:02:00,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2022-07-19 22:02:00,112 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 45 states have (on average 3.1555555555555554) internal successors, (142), 41 states have internal predecessors, (142), 18 states have call successors, (26), 12 states have call predecessors, (26), 13 states have return successors, (23), 17 states have call predecessors, (23), 17 states have call successors, (23) Word has length 120 [2022-07-19 22:02:00,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:02:00,113 INFO L225 Difference]: With dead ends: 297 [2022-07-19 22:02:00,114 INFO L226 Difference]: Without dead ends: 193 [2022-07-19 22:02:00,115 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 141 SyntacticMatches, 6 SemanticMatches, 80 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 1317 ImplicationChecksByTransitivity, 117.9s TimeCoverageRelationStatistics Valid=372, Invalid=5290, Unknown=62, NotChecked=918, Total=6642 [2022-07-19 22:02:00,116 INFO L413 NwaCegarLoop]: 130 mSDtfsCounter, 163 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 2554 mSolverCounterSat, 81 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 174 SdHoareTripleChecker+Valid, 1034 SdHoareTripleChecker+Invalid, 4627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 81 IncrementalHoareTripleChecker+Valid, 2554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1992 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-07-19 22:02:00,116 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [174 Valid, 1034 Invalid, 4627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [81 Valid, 2554 Invalid, 0 Unknown, 1992 Unchecked, 1.5s Time] [2022-07-19 22:02:00,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-07-19 22:02:00,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 177. [2022-07-19 22:02:00,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 132 states have (on average 1.0909090909090908) internal successors, (144), 136 states have internal predecessors, (144), 24 states have call successors, (24), 16 states have call predecessors, (24), 20 states have return successors, (30), 24 states have call predecessors, (30), 23 states have call successors, (30) [2022-07-19 22:02:00,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 198 transitions. [2022-07-19 22:02:00,127 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 198 transitions. Word has length 120 [2022-07-19 22:02:00,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:02:00,128 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 198 transitions. [2022-07-19 22:02:00,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 45 states have (on average 3.1555555555555554) internal successors, (142), 41 states have internal predecessors, (142), 18 states have call successors, (26), 12 states have call predecessors, (26), 13 states have return successors, (23), 17 states have call predecessors, (23), 17 states have call successors, (23) [2022-07-19 22:02:00,128 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 198 transitions. [2022-07-19 22:02:00,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-19 22:02:00,129 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:02:00,130 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:02:00,157 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-07-19 22:02:00,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:02:00,343 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:02:00,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:02:00,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1861902303, now seen corresponding path program 1 times [2022-07-19 22:02:00,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:02:00,344 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [314770258] [2022-07-19 22:02:00,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:02:00,344 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:02:00,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:02:00,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:02:00,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:02:00,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:00,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:02:00,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:02:00,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:02:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:02:00,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 22:02:00,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:00,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:00,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 22:02:00,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,616 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 28 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-19 22:02:00,617 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:02:00,617 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [314770258] [2022-07-19 22:02:00,617 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [314770258] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:02:00,617 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:02:00,617 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 22:02:00,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284959409] [2022-07-19 22:02:00,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:02:00,618 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 22:02:00,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:02:00,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 22:02:00,619 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-19 22:02:00,619 INFO L87 Difference]: Start difference. First operand 177 states and 198 transitions. Second operand has 9 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 22:02:01,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:02:01,118 INFO L93 Difference]: Finished difference Result 265 states and 297 transitions. [2022-07-19 22:02:01,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 22:02:01,119 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 120 [2022-07-19 22:02:01,119 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:02:01,120 INFO L225 Difference]: With dead ends: 265 [2022-07-19 22:02:01,120 INFO L226 Difference]: Without dead ends: 185 [2022-07-19 22:02:01,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=61, Invalid=149, Unknown=0, NotChecked=0, Total=210 [2022-07-19 22:02:01,121 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 149 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 512 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 251 SdHoareTripleChecker+Invalid, 567 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 22:02:01,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 251 Invalid, 567 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 512 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 22:02:01,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-07-19 22:02:01,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 177. [2022-07-19 22:02:01,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 177 states, 132 states have (on average 1.0909090909090908) internal successors, (144), 136 states have internal predecessors, (144), 24 states have call successors, (24), 16 states have call predecessors, (24), 20 states have return successors, (30), 24 states have call predecessors, (30), 23 states have call successors, (30) [2022-07-19 22:02:01,132 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 198 transitions. [2022-07-19 22:02:01,132 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 198 transitions. Word has length 120 [2022-07-19 22:02:01,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:02:01,132 INFO L495 AbstractCegarLoop]: Abstraction has 177 states and 198 transitions. [2022-07-19 22:02:01,132 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.25) internal successors, (66), 7 states have internal predecessors, (66), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 22:02:01,133 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 198 transitions. [2022-07-19 22:02:01,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-19 22:02:01,134 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:02:01,134 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:02:01,134 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 22:02:01,134 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:02:01,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:02:01,135 INFO L85 PathProgramCache]: Analyzing trace with hash 2120067741, now seen corresponding path program 1 times [2022-07-19 22:02:01,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:02:01,135 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338801532] [2022-07-19 22:02:01,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:02:01,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:02:01,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:01,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:02:01,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:01,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:02:01,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:01,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:02:01,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:01,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:01,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:01,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:02:01,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:01,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:02:01,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:01,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:02:01,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:01,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:02:01,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:01,319 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 22:02:01,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:01,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:01,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:01,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:01,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:01,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 22:02:01,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:01,379 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 26 proven. 0 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2022-07-19 22:02:01,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:02:01,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338801532] [2022-07-19 22:02:01,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338801532] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:02:01,380 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:02:01,380 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 22:02:01,380 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080696400] [2022-07-19 22:02:01,380 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:02:01,381 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 22:02:01,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:02:01,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 22:02:01,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-07-19 22:02:01,382 INFO L87 Difference]: Start difference. First operand 177 states and 198 transitions. Second operand has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-19 22:02:01,741 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:02:01,741 INFO L93 Difference]: Finished difference Result 260 states and 293 transitions. [2022-07-19 22:02:01,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 22:02:01,744 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 120 [2022-07-19 22:02:01,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:02:01,745 INFO L225 Difference]: With dead ends: 260 [2022-07-19 22:02:01,745 INFO L226 Difference]: Without dead ends: 180 [2022-07-19 22:02:01,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2022-07-19 22:02:01,746 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 141 mSDsluCounter, 86 mSDsCounter, 0 mSdLazyCounter, 250 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 143 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 250 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 22:02:01,746 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [143 Valid, 184 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 250 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 22:02:01,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-07-19 22:02:01,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 175. [2022-07-19 22:02:01,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 130 states have (on average 1.0846153846153845) internal successors, (141), 134 states have internal predecessors, (141), 24 states have call successors, (24), 16 states have call predecessors, (24), 20 states have return successors, (30), 24 states have call predecessors, (30), 23 states have call successors, (30) [2022-07-19 22:02:01,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 195 transitions. [2022-07-19 22:02:01,756 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 195 transitions. Word has length 120 [2022-07-19 22:02:01,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:02:01,757 INFO L495 AbstractCegarLoop]: Abstraction has 175 states and 195 transitions. [2022-07-19 22:02:01,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.285714285714286) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-19 22:02:01,757 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 195 transitions. [2022-07-19 22:02:01,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-19 22:02:01,758 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:02:01,758 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:02:01,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 22:02:01,759 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:02:01,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:02:01,759 INFO L85 PathProgramCache]: Analyzing trace with hash 1789241476, now seen corresponding path program 1 times [2022-07-19 22:02:01,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:02:01,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618708703] [2022-07-19 22:02:01,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:02:01,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:02:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:01,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:02:01,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:01,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:02:01,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:01,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:02:01,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:01,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:01,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:01,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:02:01,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:01,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:02:01,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:01,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:02:01,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:01,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:02:01,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:01,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 22:02:01,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:01,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:01,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:01,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:01,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:01,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 22:02:01,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:02,014 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-07-19 22:02:02,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:02:02,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618708703] [2022-07-19 22:02:02,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618708703] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:02:02,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:02:02,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-19 22:02:02,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213071194] [2022-07-19 22:02:02,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:02:02,019 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 22:02:02,019 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:02:02,019 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 22:02:02,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-07-19 22:02:02,020 INFO L87 Difference]: Start difference. First operand 175 states and 195 transitions. Second operand has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-19 22:02:02,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:02:02,591 INFO L93 Difference]: Finished difference Result 195 states and 218 transitions. [2022-07-19 22:02:02,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 22:02:02,591 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) Word has length 122 [2022-07-19 22:02:02,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:02:02,592 INFO L225 Difference]: With dead ends: 195 [2022-07-19 22:02:02,593 INFO L226 Difference]: Without dead ends: 193 [2022-07-19 22:02:02,593 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2022-07-19 22:02:02,593 INFO L413 NwaCegarLoop]: 92 mSDtfsCounter, 137 mSDsluCounter, 282 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 140 SdHoareTripleChecker+Valid, 374 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 22:02:02,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [140 Valid, 374 Invalid, 819 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 22:02:02,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 193 states. [2022-07-19 22:02:02,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 193 to 181. [2022-07-19 22:02:02,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 181 states, 135 states have (on average 1.0814814814814815) internal successors, (146), 140 states have internal predecessors, (146), 24 states have call successors, (24), 16 states have call predecessors, (24), 21 states have return successors, (33), 24 states have call predecessors, (33), 23 states have call successors, (33) [2022-07-19 22:02:02,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 181 states to 181 states and 203 transitions. [2022-07-19 22:02:02,604 INFO L78 Accepts]: Start accepts. Automaton has 181 states and 203 transitions. Word has length 122 [2022-07-19 22:02:02,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:02:02,605 INFO L495 AbstractCegarLoop]: Abstraction has 181 states and 203 transitions. [2022-07-19 22:02:02,605 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 8 states have internal predecessors, (58), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 1 states have call successors, (12) [2022-07-19 22:02:02,605 INFO L276 IsEmpty]: Start isEmpty. Operand 181 states and 203 transitions. [2022-07-19 22:02:02,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-19 22:02:02,606 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:02:02,606 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:02:02,606 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 22:02:02,607 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:02:02,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:02:02,607 INFO L85 PathProgramCache]: Analyzing trace with hash -1804661242, now seen corresponding path program 1 times [2022-07-19 22:02:02,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:02:02,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804979421] [2022-07-19 22:02:02,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:02:02,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:02:02,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:02,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:02:02,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:02,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:02:02,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:02,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:02:02,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:02,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:02,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:02,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:02:02,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:02,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:02:02,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:02,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:02:02,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:02,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:02:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:02,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 22:02:02,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:02,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:02,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:02,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:02,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:02,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 22:02:02,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:02,862 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 60 trivial. 0 not checked. [2022-07-19 22:02:02,862 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:02:02,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804979421] [2022-07-19 22:02:02,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804979421] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:02:02,863 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:02:02,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 22:02:02,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [340781008] [2022-07-19 22:02:02,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:02:02,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 22:02:02,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:02:02,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 22:02:02,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-19 22:02:02,865 INFO L87 Difference]: Start difference. First operand 181 states and 203 transitions. Second operand has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 22:02:03,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:02:03,288 INFO L93 Difference]: Finished difference Result 271 states and 302 transitions. [2022-07-19 22:02:03,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 22:02:03,288 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 122 [2022-07-19 22:02:03,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:02:03,290 INFO L225 Difference]: With dead ends: 271 [2022-07-19 22:02:03,290 INFO L226 Difference]: Without dead ends: 187 [2022-07-19 22:02:03,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-07-19 22:02:03,291 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 122 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 433 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 122 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 433 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 22:02:03,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [122 Valid, 229 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 433 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 22:02:03,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2022-07-19 22:02:03,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 176. [2022-07-19 22:02:03,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 131 states have (on average 1.083969465648855) internal successors, (142), 135 states have internal predecessors, (142), 24 states have call successors, (24), 16 states have call predecessors, (24), 20 states have return successors, (30), 24 states have call predecessors, (30), 23 states have call successors, (30) [2022-07-19 22:02:03,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 196 transitions. [2022-07-19 22:02:03,302 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 196 transitions. Word has length 122 [2022-07-19 22:02:03,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:02:03,302 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 196 transitions. [2022-07-19 22:02:03,306 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 9.714285714285714) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 22:02:03,307 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 196 transitions. [2022-07-19 22:02:03,308 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-19 22:02:03,308 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:02:03,308 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:02:03,309 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-19 22:02:03,309 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:02:03,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:02:03,309 INFO L85 PathProgramCache]: Analyzing trace with hash -1475852901, now seen corresponding path program 2 times [2022-07-19 22:02:03,310 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:02:03,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1043140488] [2022-07-19 22:02:03,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:02:03,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:02:03,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:04,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:02:04,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:04,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:02:04,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:04,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:02:04,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:04,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:04,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:04,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:02:04,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:04,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:02:04,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:04,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:02:04,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:04,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:02:04,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:04,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 22:02:04,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:04,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:04,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:04,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:04,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:05,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 22:02:05,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:05,288 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 28 proven. 16 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-19 22:02:05,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:02:05,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1043140488] [2022-07-19 22:02:05,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1043140488] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:02:05,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2127221444] [2022-07-19 22:02:05,289 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 22:02:05,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:02:05,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:02:05,292 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:02:05,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-19 22:02:06,377 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 22:02:06,377 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:02:06,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 2683 conjuncts, 101 conjunts are in the unsatisfiable core [2022-07-19 22:02:06,391 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:02:06,394 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-19 22:02:06,699 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-19 22:02:06,699 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-19 22:02:06,713 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 22:02:08,726 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_secure_zero_harness_~#buf~3#1.base_BEFORE_CALL_52| Int)) (not (= |v_ULTIMATE.start_aws_byte_buf_secure_zero_harness_~#buf~3#1.base_BEFORE_CALL_52| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_secure_zero_harness_~#buf~3#1.base_BEFORE_CALL_52|) ~aws_common_error~0~AWS_ERROR_INVALID_BASE64_STR)))) is different from true [2022-07-19 22:02:10,771 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_secure_zero_harness_~#buf~3#1.base_BEFORE_CALL_53| Int)) (not (= |v_ULTIMATE.start_aws_byte_buf_secure_zero_harness_~#buf~3#1.base_BEFORE_CALL_53| (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_secure_zero_harness_~#buf~3#1.base_BEFORE_CALL_53|) ~aws_common_error~0~AWS_ERROR_INVALID_BASE64_STR)))) is different from true [2022-07-19 22:02:12,812 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_aws_byte_buf_secure_zero_~buf#1.base_BEFORE_CALL_26| Int)) (not (= |v_aws_byte_buf_secure_zero_~buf#1.base_BEFORE_CALL_26| (select (select |c_#memory_$Pointer$.base| |v_aws_byte_buf_secure_zero_~buf#1.base_BEFORE_CALL_26|) 8)))) is different from true [2022-07-19 22:02:47,358 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-07-19 22:02:53,218 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1410 (Array Int Int))) (= (store |c_old(#memory_int)| |c_memset_impl_#in~s.base| v_ArrVal_1410) |c_#memory_int|)) is different from true [2022-07-19 22:02:53,228 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1410 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_my_memset_#in~s.base| v_ArrVal_1410))) is different from true [2022-07-19 22:02:53,239 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-07-19 22:02:53,260 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 31 treesize of output 26 [2022-07-19 22:03:09,746 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 8 proven. 29 refuted. 6 times theorem prover too weak. 4 trivial. 44 not checked. [2022-07-19 22:03:09,746 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:03:12,138 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1419 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_aws_byte_buf_secure_zero_aws_secure_zero_~pBuf#1.base| v_ArrVal_1419) |c_aws_byte_buf_secure_zero_~buf#1.base|) (+ 16 |c_aws_byte_buf_secure_zero_~buf#1.offset|)) 18446744073709551616) 0))) is different from false [2022-07-19 22:03:12,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2127221444] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:03:12,139 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 22:03:12,139 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 32] total 53 [2022-07-19 22:03:12,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359727774] [2022-07-19 22:03:12,139 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 22:03:12,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-07-19 22:03:12,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:03:12,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-07-19 22:03:12,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=176, Invalid=2465, Unknown=35, NotChecked=630, Total=3306 [2022-07-19 22:03:12,141 INFO L87 Difference]: Start difference. First operand 176 states and 196 transitions. Second operand has 53 states, 49 states have (on average 3.020408163265306) internal successors, (148), 45 states have internal predecessors, (148), 15 states have call successors, (25), 13 states have call predecessors, (25), 14 states have return successors, (23), 15 states have call predecessors, (23), 14 states have call successors, (23)