./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.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_write_from_whole_buffer_harness-1.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 cab1c092802d28f475b8a467f14dab6a3f796dc1a4441d8517361eeec98aa4cb --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:59:55,265 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:59:55,267 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:59:55,305 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:59:55,306 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:59:55,308 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:59:55,309 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:59:55,312 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:59:55,313 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:59:55,314 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:59:55,315 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:59:55,317 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:59:55,318 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:59:55,321 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:59:55,331 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:59:55,333 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:59:55,335 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:59:55,336 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:59:55,338 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:59:55,340 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:59:55,343 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:59:55,345 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:59:55,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:59:55,346 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:59:55,347 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:59:55,349 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:59:55,351 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:59:55,352 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:59:55,352 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:59:55,353 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:59:55,354 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:59:55,354 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:59:55,355 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:59:55,355 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:59:55,356 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:59:55,357 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:59:55,358 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:59:55,358 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:59:55,358 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:59:55,358 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:59:55,359 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:59:55,361 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:59:55,362 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-19 21:59:55,380 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:59:55,385 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:59:55,386 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:59:55,386 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:59:55,386 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:59:55,386 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:59:55,387 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:59:55,387 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:59:55,387 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:59:55,388 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:59:55,388 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:59:55,388 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:59:55,388 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:59:55,388 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:59:55,389 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:59:55,389 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:59:55,389 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:59:55,389 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:59:55,389 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:59:55,389 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:59:55,389 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:59:55,390 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:59:55,390 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:59:55,390 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:59:55,390 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:59:55,390 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:59:55,391 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:59:55,391 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:59:55,391 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:59:55,391 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:59:55,391 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cab1c092802d28f475b8a467f14dab6a3f796dc1a4441d8517361eeec98aa4cb [2022-07-19 21:59:55,616 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:59:55,634 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:59:55,636 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:59:55,637 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:59:55,638 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:59:55,639 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i [2022-07-19 21:59:55,688 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa01e7dcf/b77f8257269b47a2881d04c2176d33dd/FLAG6d54b6e38 [2022-07-19 21:59:56,298 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:59:56,298 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_from_whole_buffer_harness-1.i [2022-07-19 21:59:56,325 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa01e7dcf/b77f8257269b47a2881d04c2176d33dd/FLAG6d54b6e38 [2022-07-19 21:59:56,727 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fa01e7dcf/b77f8257269b47a2881d04c2176d33dd [2022-07-19 21:59:56,729 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:59:56,731 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:59:56,732 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:59:56,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:59:56,735 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:59:56,735 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:59:56" (1/1) ... [2022-07-19 21:59:56,736 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a2431ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:56, skipping insertion in model container [2022-07-19 21:59:56,736 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:59:56" (1/1) ... [2022-07-19 21:59:56,740 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:59:56,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:59:57,006 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_write_from_whole_buffer_harness-1.i[4510,4523] [2022-07-19 21:59:57,013 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_write_from_whole_buffer_harness-1.i[4570,4583] [2022-07-19 21:59:57,565 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:57,566 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:57,567 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:57,568 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:57,569 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:57,580 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:57,583 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:57,584 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:57,584 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:57,763 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-19 21:59:57,764 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-19 21:59:57,765 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-19 21:59:57,767 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-19 21:59:57,767 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-19 21:59:57,768 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-19 21:59:57,768 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-19 21:59:57,769 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-19 21:59:57,769 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-19 21:59:57,769 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-19 21:59:57,850 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-19 21:59:57,950 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:57,952 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:58,014 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:59:58,054 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:59:58,072 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_write_from_whole_buffer_harness-1.i[4510,4523] [2022-07-19 21:59:58,073 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_write_from_whole_buffer_harness-1.i[4570,4583] [2022-07-19 21:59:58,125 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:58,125 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:58,126 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:58,126 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:58,126 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:58,133 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:58,134 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:58,135 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:58,135 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:58,156 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-19 21:59:58,157 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-19 21:59:58,157 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-19 21:59:58,158 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-19 21:59:58,158 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-19 21:59:58,159 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-19 21:59:58,159 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-19 21:59:58,159 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-19 21:59:58,160 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-19 21:59:58,160 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-19 21:59:58,172 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-19 21:59:58,216 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:58,216 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:58,247 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:59:58,400 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:59:58,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:58 WrapperNode [2022-07-19 21:59:58,401 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:59:58,402 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:59:58,402 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:59:58,402 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:59:58,407 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:58" (1/1) ... [2022-07-19 21:59:58,503 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:58" (1/1) ... [2022-07-19 21:59:58,567 INFO L137 Inliner]: procedures = 691, calls = 2668, calls flagged for inlining = 58, calls inlined = 5, statements flattened = 900 [2022-07-19 21:59:58,568 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:59:58,569 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:59:58,569 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:59:58,569 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:59:58,575 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:58" (1/1) ... [2022-07-19 21:59:58,575 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:58" (1/1) ... [2022-07-19 21:59:58,583 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:58" (1/1) ... [2022-07-19 21:59:58,584 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:58" (1/1) ... [2022-07-19 21:59:58,638 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:58" (1/1) ... [2022-07-19 21:59:58,647 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:58" (1/1) ... [2022-07-19 21:59:58,652 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:58" (1/1) ... [2022-07-19 21:59:58,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:59:58,674 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:59:58,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:59:58,675 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:59:58,678 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:58" (1/1) ... [2022-07-19 21:59:58,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:59:58,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:59:58,705 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 21:59:58,712 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 21:59:58,744 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-07-19 21:59:58,744 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-07-19 21:59:58,744 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:59:58,745 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-19 21:59:58,745 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-19 21:59:58,745 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:59:58,745 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-19 21:59:58,745 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-19 21:59:58,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 21:59:58,746 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:59:58,746 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2022-07-19 21:59:58,747 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2022-07-19 21:59:58,747 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 21:59:58,747 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-07-19 21:59:58,747 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-07-19 21:59:58,748 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_byte_buf_has_allocated_buffer_member [2022-07-19 21:59:58,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_byte_buf_has_allocated_buffer_member [2022-07-19 21:59:58,748 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:59:58,748 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:59:58,748 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-19 21:59:58,748 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-19 21:59:58,748 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-19 21:59:58,748 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-19 21:59:58,749 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_size_t [2022-07-19 21:59:58,749 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_size_t [2022-07-19 21:59:58,749 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-19 21:59:58,749 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-19 21:59:58,749 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-07-19 21:59:58,749 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-07-19 21:59:58,750 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:59:58,750 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 21:59:58,750 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2022-07-19 21:59:58,751 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2022-07-19 21:59:58,751 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-19 21:59:58,751 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-19 21:59:58,751 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-19 21:59:58,751 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-19 21:59:58,751 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-19 21:59:58,751 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_bounded [2022-07-19 21:59:58,751 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_bounded [2022-07-19 21:59:58,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:59:58,752 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_buf_equivalence [2022-07-19 21:59:58,752 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_buf_equivalence [2022-07-19 21:59:58,752 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:59:59,006 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:59:59,008 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:59:59,759 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:59:59,767 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:59:59,767 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 21:59:59,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:59:59 BoogieIcfgContainer [2022-07-19 21:59:59,770 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:59:59,771 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:59:59,771 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:59:59,801 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:59:59,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:59:56" (1/3) ... [2022-07-19 21:59:59,802 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a19b79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:59:59, skipping insertion in model container [2022-07-19 21:59:59,802 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:58" (2/3) ... [2022-07-19 21:59:59,803 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@41a19b79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:59:59, skipping insertion in model container [2022-07-19 21:59:59,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:59:59" (3/3) ... [2022-07-19 21:59:59,804 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_from_whole_buffer_harness-1.i [2022-07-19 21:59:59,835 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:59:59,836 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:59:59,894 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:59:59,898 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@2471b2a8, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5854bb62 [2022-07-19 21:59:59,899 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 21:59:59,902 INFO L276 IsEmpty]: Start isEmpty. Operand has 187 states, 111 states have (on average 1.2072072072072073) internal successors, (134), 113 states have internal predecessors, (134), 58 states have call successors, (58), 16 states have call predecessors, (58), 16 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) [2022-07-19 21:59:59,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-19 21:59:59,913 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:59:59,914 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:59:59,915 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:59:59,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:59:59,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1514198340, now seen corresponding path program 1 times [2022-07-19 21:59:59,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:59:59,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763479159] [2022-07-19 21:59:59,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:59,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:00,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:00:00,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:00,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:00:00,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 22:00:00,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:00:00,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 22:00:00,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 22:00:00,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:00,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:00,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:00,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:00:00,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 22:00:00,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 22:00:00,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 22:00:00,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 22:00:00,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:00,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:00,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:00,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 22:00:00,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 22:00:00,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 22:00:00,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 22:00:00,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-19 22:00:00,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-19 22:00:00,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 22:00:00,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-19 22:00:00,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-19 22:00:00,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-19 22:00:00,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-19 22:00:00,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-07-19 22:00:00,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:00,619 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 296 trivial. 0 not checked. [2022-07-19 22:00:00,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:00,620 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763479159] [2022-07-19 22:00:00,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763479159] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:00:00,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:00:00,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-19 22:00:00,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412679567] [2022-07-19 22:00:00,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:00:00,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 22:00:00,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:00,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 22:00:00,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 22:00:00,654 INFO L87 Difference]: Start difference. First operand has 187 states, 111 states have (on average 1.2072072072072073) internal successors, (134), 113 states have internal predecessors, (134), 58 states have call successors, (58), 16 states have call predecessors, (58), 16 states have return successors, (58), 58 states have call predecessors, (58), 58 states have call successors, (58) Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-19 22:00:01,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:00:01,187 INFO L93 Difference]: Finished difference Result 374 states and 536 transitions. [2022-07-19 22:00:01,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 22:00:01,189 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) Word has length 176 [2022-07-19 22:00:01,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:00:01,198 INFO L225 Difference]: With dead ends: 374 [2022-07-19 22:00:01,198 INFO L226 Difference]: Without dead ends: 194 [2022-07-19 22:00:01,202 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-19 22:00:01,205 INFO L413 NwaCegarLoop]: 202 mSDtfsCounter, 179 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 145 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 200 SdHoareTripleChecker+Valid, 259 SdHoareTripleChecker+Invalid, 304 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 145 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 22:00:01,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [200 Valid, 259 Invalid, 304 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [145 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 22:00:01,217 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2022-07-19 22:00:01,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 182. [2022-07-19 22:00:01,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 107 states have (on average 1.1869158878504673) internal successors, (127), 109 states have internal predecessors, (127), 58 states have call successors, (58), 16 states have call predecessors, (58), 16 states have return successors, (57), 57 states have call predecessors, (57), 57 states have call successors, (57) [2022-07-19 22:00:01,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 242 transitions. [2022-07-19 22:00:01,244 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 242 transitions. Word has length 176 [2022-07-19 22:00:01,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:00:01,244 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 242 transitions. [2022-07-19 22:00:01,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 2 states have call successors, (27) [2022-07-19 22:00:01,245 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 242 transitions. [2022-07-19 22:00:01,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-07-19 22:00:01,248 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:00:01,248 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:00:01,248 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 22:00:01,248 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:00:01,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:00:01,249 INFO L85 PathProgramCache]: Analyzing trace with hash 606096116, now seen corresponding path program 1 times [2022-07-19 22:00:01,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:00:01,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887933441] [2022-07-19 22:00:01,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:01,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:01,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:00:01,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:01,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:00:01,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 22:00:01,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:00:01,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 22:00:01,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 22:00:01,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:01,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:01,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:01,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:00:01,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 22:00:01,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 22:00:01,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 22:00:01,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 22:00:01,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:01,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:01,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:01,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 22:00:01,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 22:00:01,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 22:00:01,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 22:00:01,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-19 22:00:01,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-19 22:00:01,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 22:00:01,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-19 22:00:01,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 146 [2022-07-19 22:00:01,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-19 22:00:01,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-19 22:00:01,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-07-19 22:00:01,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,758 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-07-19 22:00:01,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:01,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887933441] [2022-07-19 22:00:01,759 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887933441] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:00:01,759 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1983180173] [2022-07-19 22:00:01,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:01,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:01,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:00:01,761 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 22:00:01,762 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 22:00:02,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:02,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 3020 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 22:00:02,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:00:02,433 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 188 trivial. 0 not checked. [2022-07-19 22:00:02,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:00:02,434 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1983180173] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:00:02,434 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:00:02,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-07-19 22:00:02,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118767839] [2022-07-19 22:00:02,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:00:02,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 22:00:02,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:02,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 22:00:02,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-07-19 22:00:02,437 INFO L87 Difference]: Start difference. First operand 182 states and 242 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-07-19 22:00:02,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:00:02,631 INFO L93 Difference]: Finished difference Result 352 states and 472 transitions. [2022-07-19 22:00:02,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 22:00:02,631 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 176 [2022-07-19 22:00:02,632 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:00:02,633 INFO L225 Difference]: With dead ends: 352 [2022-07-19 22:00:02,633 INFO L226 Difference]: Without dead ends: 185 [2022-07-19 22:00:02,635 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 242 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2022-07-19 22:00:02,635 INFO L413 NwaCegarLoop]: 192 mSDtfsCounter, 256 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 259 SdHoareTripleChecker+Valid, 535 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:00:02,636 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [259 Valid, 535 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:00:02,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-07-19 22:00:02,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2022-07-19 22:00:02,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 109 states have (on average 1.18348623853211) internal successors, (129), 112 states have internal predecessors, (129), 58 states have call successors, (58), 16 states have call predecessors, (58), 17 states have return successors, (64), 57 states have call predecessors, (64), 57 states have call successors, (64) [2022-07-19 22:00:02,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 251 transitions. [2022-07-19 22:00:02,664 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 251 transitions. Word has length 176 [2022-07-19 22:00:02,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:00:02,665 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 251 transitions. [2022-07-19 22:00:02,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (32), 2 states have call predecessors, (32), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-07-19 22:00:02,665 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 251 transitions. [2022-07-19 22:00:02,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-07-19 22:00:02,667 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:00:02,667 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:00:02,691 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-19 22:00:02,883 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 22:00:02,883 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:00:02,884 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:00:02,884 INFO L85 PathProgramCache]: Analyzing trace with hash 1545774441, now seen corresponding path program 1 times [2022-07-19 22:00:02,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:00:02,884 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875778217] [2022-07-19 22:00:02,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:02,884 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:02,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:03,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:00:03,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:03,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:03,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:03,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:00:03,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:03,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 22:00:03,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:03,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:00:03,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:03,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 22:00:03,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:03,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 22:00:03,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:03,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:03,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:03,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:03,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:03,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:03,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:03,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:00:03,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:03,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 22:00:03,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:03,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:00:03,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:03,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 22:00:03,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:03,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 22:00:03,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:03,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:03,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:03,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:03,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:03,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:03,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:03,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 22:00:03,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:03,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 22:00:03,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:03,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 22:00:03,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:03,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-19 22:00:03,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:03,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-19 22:00:03,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:03,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 22:00:03,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:03,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-19 22:00:03,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:03,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-19 22:00:03,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:03,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-19 22:00:03,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:03,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-19 22:00:03,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:03,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 22:00:03,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:03,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-19 22:00:03,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:03,311 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-07-19 22:00:03,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:03,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875778217] [2022-07-19 22:00:03,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875778217] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:00:03,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735335140] [2022-07-19 22:00:03,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:03,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:03,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:00:03,313 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 22:00:03,314 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 22:00:03,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:03,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 3037 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 22:00:03,742 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:00:03,859 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 144 proven. 12 refuted. 0 times theorem prover too weak. 140 trivial. 0 not checked. [2022-07-19 22:00:03,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:00:04,018 INFO L134 CoverageAnalysis]: Checked inductivity of 296 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-07-19 22:00:04,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735335140] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:00:04,019 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 22:00:04,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2022-07-19 22:00:04,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [168373206] [2022-07-19 22:00:04,019 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 22:00:04,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 22:00:04,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:04,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 22:00:04,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-07-19 22:00:04,021 INFO L87 Difference]: Start difference. First operand 185 states and 251 transitions. Second operand has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 11 states have internal predecessors, (94), 7 states have call successors, (69), 6 states have call predecessors, (69), 5 states have return successors, (64), 7 states have call predecessors, (64), 7 states have call successors, (64) [2022-07-19 22:00:04,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:00:04,776 INFO L93 Difference]: Finished difference Result 336 states and 456 transitions. [2022-07-19 22:00:04,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 22:00:04,777 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 11 states have internal predecessors, (94), 7 states have call successors, (69), 6 states have call predecessors, (69), 5 states have return successors, (64), 7 states have call predecessors, (64), 7 states have call successors, (64) Word has length 182 [2022-07-19 22:00:04,777 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:00:04,779 INFO L225 Difference]: With dead ends: 336 [2022-07-19 22:00:04,779 INFO L226 Difference]: Without dead ends: 197 [2022-07-19 22:00:04,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 435 GetRequests, 417 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2022-07-19 22:00:04,780 INFO L413 NwaCegarLoop]: 154 mSDtfsCounter, 466 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 838 mSolverCounterSat, 401 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 466 SdHoareTripleChecker+Valid, 388 SdHoareTripleChecker+Invalid, 1239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 401 IncrementalHoareTripleChecker+Valid, 838 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 22:00:04,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [466 Valid, 388 Invalid, 1239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [401 Valid, 838 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-19 22:00:04,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2022-07-19 22:00:04,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 185. [2022-07-19 22:00:04,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 109 states have (on average 1.18348623853211) internal successors, (129), 112 states have internal predecessors, (129), 58 states have call successors, (58), 16 states have call predecessors, (58), 17 states have return successors, (62), 57 states have call predecessors, (62), 57 states have call successors, (62) [2022-07-19 22:00:04,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 249 transitions. [2022-07-19 22:00:04,794 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 249 transitions. Word has length 182 [2022-07-19 22:00:04,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:00:04,795 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 249 transitions. [2022-07-19 22:00:04,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 11 states have internal predecessors, (94), 7 states have call successors, (69), 6 states have call predecessors, (69), 5 states have return successors, (64), 7 states have call predecessors, (64), 7 states have call successors, (64) [2022-07-19 22:00:04,795 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 249 transitions. [2022-07-19 22:00:04,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2022-07-19 22:00:04,797 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:00:04,797 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:00:04,820 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 22:00:05,011 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 22:00:05,011 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:00:05,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:00:05,012 INFO L85 PathProgramCache]: Analyzing trace with hash 2124831764, now seen corresponding path program 2 times [2022-07-19 22:00:05,012 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:00:05,012 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1528483659] [2022-07-19 22:00:05,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:05,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:05,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:00:05,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:05,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:00:05,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 22:00:05,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:00:05,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 22:00:05,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 22:00:05,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:05,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:05,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:05,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:00:05,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 22:00:05,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:00:05,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 22:00:05,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 22:00:05,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:05,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:05,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:05,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 22:00:05,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 22:00:05,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-19 22:00:05,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-19 22:00:05,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 22:00:05,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-19 22:00:05,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-19 22:00:05,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-19 22:00:05,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-19 22:00:05,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 22:00:05,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-19 22:00:05,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-07-19 22:00:05,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:05,480 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 4 proven. 38 refuted. 0 times theorem prover too weak. 260 trivial. 0 not checked. [2022-07-19 22:00:05,480 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:05,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1528483659] [2022-07-19 22:00:05,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1528483659] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:00:05,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1342612054] [2022-07-19 22:00:05,481 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 22:00:05,481 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:05,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:00:05,482 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 22:00:05,483 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 22:00:05,929 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 22:00:05,929 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:00:05,939 INFO L263 TraceCheckSpWp]: Trace formula consists of 3054 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-19 22:00:05,945 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:00:06,109 INFO L134 CoverageAnalysis]: Checked inductivity of 302 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 282 trivial. 0 not checked. [2022-07-19 22:00:06,109 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:00:06,109 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1342612054] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:00:06,109 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:00:06,109 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 20 [2022-07-19 22:00:06,109 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723934784] [2022-07-19 22:00:06,109 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:00:06,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 22:00:06,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:06,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 22:00:06,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=332, Unknown=0, NotChecked=0, Total=380 [2022-07-19 22:00:06,111 INFO L87 Difference]: Start difference. First operand 185 states and 249 transitions. Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 8 states have internal predecessors, (57), 5 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 5 states have call predecessors, (27), 4 states have call successors, (27) [2022-07-19 22:00:06,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:00:06,460 INFO L93 Difference]: Finished difference Result 306 states and 416 transitions. [2022-07-19 22:00:06,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 22:00:06,461 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 8 states have internal predecessors, (57), 5 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 5 states have call predecessors, (27), 4 states have call successors, (27) Word has length 188 [2022-07-19 22:00:06,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:00:06,463 INFO L225 Difference]: With dead ends: 306 [2022-07-19 22:00:06,463 INFO L226 Difference]: Without dead ends: 185 [2022-07-19 22:00:06,464 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 262 GetRequests, 238 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=81, Invalid=569, Unknown=0, NotChecked=0, Total=650 [2022-07-19 22:00:06,464 INFO L413 NwaCegarLoop]: 182 mSDtfsCounter, 279 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 1138 SdHoareTripleChecker+Invalid, 483 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 22:00:06,464 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 1138 Invalid, 483 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 392 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 22:00:06,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2022-07-19 22:00:06,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 185. [2022-07-19 22:00:06,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 109 states have (on average 1.18348623853211) internal successors, (129), 112 states have internal predecessors, (129), 58 states have call successors, (58), 16 states have call predecessors, (58), 17 states have return successors, (58), 57 states have call predecessors, (58), 57 states have call successors, (58) [2022-07-19 22:00:06,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 245 transitions. [2022-07-19 22:00:06,478 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 245 transitions. Word has length 188 [2022-07-19 22:00:06,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:00:06,478 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 245 transitions. [2022-07-19 22:00:06,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 8 states have internal predecessors, (57), 5 states have call successors, (29), 3 states have call predecessors, (29), 2 states have return successors, (27), 5 states have call predecessors, (27), 4 states have call successors, (27) [2022-07-19 22:00:06,479 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 245 transitions. [2022-07-19 22:00:06,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 207 [2022-07-19 22:00:06,480 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:00:06,481 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:00:06,501 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 22:00:06,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:06,695 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:00:06,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:00:06,696 INFO L85 PathProgramCache]: Analyzing trace with hash -806726443, now seen corresponding path program 3 times [2022-07-19 22:00:06,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:00:06,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1942479675] [2022-07-19 22:00:06,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:06,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:06,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:06,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:00:06,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:06,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:06,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:06,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:00:06,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:06,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 22:00:06,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:06,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:00:06,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:06,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 22:00:06,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:06,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 22:00:06,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:06,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:06,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:06,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:06,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:06,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:06,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:06,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:00:06,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:06,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 22:00:06,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:06,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:00:06,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:06,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 22:00:06,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:06,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 22:00:06,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:06,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:06,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:06,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:06,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:06,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:06,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:06,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 22:00:06,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:06,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 22:00:06,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:06,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-19 22:00:06,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:06,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-19 22:00:06,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:06,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 22:00:06,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:06,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-19 22:00:06,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:06,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-19 22:00:06,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:06,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-19 22:00:06,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:06,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 22:00:06,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:06,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-19 22:00:06,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:06,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-19 22:00:06,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:06,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-19 22:00:06,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:06,999 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2022-07-19 22:00:06,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:06,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1942479675] [2022-07-19 22:00:06,999 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1942479675] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:00:06,999 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [75959411] [2022-07-19 22:00:06,999 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 22:00:06,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:06,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:00:07,000 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 22:00:07,002 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 22:00:07,355 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2022-07-19 22:00:07,355 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:00:07,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 2325 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-19 22:00:07,367 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:00:07,416 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 337 trivial. 0 not checked. [2022-07-19 22:00:07,417 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:00:07,417 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [75959411] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:00:07,417 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:00:07,417 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-07-19 22:00:07,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516590679] [2022-07-19 22:00:07,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:00:07,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 22:00:07,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:07,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 22:00:07,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=153, Unknown=0, NotChecked=0, Total=182 [2022-07-19 22:00:07,418 INFO L87 Difference]: Start difference. First operand 185 states and 245 transitions. Second operand has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2022-07-19 22:00:07,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:00:07,494 INFO L93 Difference]: Finished difference Result 197 states and 265 transitions. [2022-07-19 22:00:07,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 22:00:07,494 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) Word has length 206 [2022-07-19 22:00:07,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:00:07,496 INFO L225 Difference]: With dead ends: 197 [2022-07-19 22:00:07,496 INFO L226 Difference]: Without dead ends: 195 [2022-07-19 22:00:07,496 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 271 GetRequests, 257 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=202, Unknown=0, NotChecked=0, Total=240 [2022-07-19 22:00:07,497 INFO L413 NwaCegarLoop]: 241 mSDtfsCounter, 22 mSDsluCounter, 1389 mSDsCounter, 0 mSdLazyCounter, 70 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1630 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 70 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:00:07,497 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 1630 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 70 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 22:00:07,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2022-07-19 22:00:07,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 194. [2022-07-19 22:00:07,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 115 states have (on average 1.173913043478261) internal successors, (135), 119 states have internal predecessors, (135), 59 states have call successors, (59), 17 states have call predecessors, (59), 19 states have return successors, (68), 58 states have call predecessors, (68), 58 states have call successors, (68) [2022-07-19 22:00:07,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 262 transitions. [2022-07-19 22:00:07,508 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 262 transitions. Word has length 206 [2022-07-19 22:00:07,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:00:07,508 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 262 transitions. [2022-07-19 22:00:07,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 8.142857142857142) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2022-07-19 22:00:07,508 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 262 transitions. [2022-07-19 22:00:07,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 211 [2022-07-19 22:00:07,510 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:00:07,510 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:00:07,545 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 22:00:07,735 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:07,735 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:00:07,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:00:07,736 INFO L85 PathProgramCache]: Analyzing trace with hash 2116281437, now seen corresponding path program 1 times [2022-07-19 22:00:07,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:00:07,736 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1563425585] [2022-07-19 22:00:07,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:07,736 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:07,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:07,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:00:07,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:07,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:07,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:07,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:00:07,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:07,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 22:00:07,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:07,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:00:07,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:07,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 22:00:07,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:07,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 22:00:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:07,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:07,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:07,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:07,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:07,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:07,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:07,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:00:07,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:07,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 22:00:07,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:07,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:00:07,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:07,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 22:00:07,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:07,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 22:00:07,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:07,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:07,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:07,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:07,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:07,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:07,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:07,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 22:00:07,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:08,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 22:00:08,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:08,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-19 22:00:08,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:08,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-19 22:00:08,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:08,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 22:00:08,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:08,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-19 22:00:08,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:08,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-19 22:00:08,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:08,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-19 22:00:08,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:08,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 164 [2022-07-19 22:00:08,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:08,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 176 [2022-07-19 22:00:08,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:08,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-19 22:00:08,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:08,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-19 22:00:08,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:08,081 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2022-07-19 22:00:08,081 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:08,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1563425585] [2022-07-19 22:00:08,081 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1563425585] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:00:08,081 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1962366172] [2022-07-19 22:00:08,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:08,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:08,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:00:08,083 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 22:00:08,084 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 22:00:08,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:08,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 3117 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 22:00:08,531 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:00:08,712 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 164 proven. 56 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-19 22:00:08,712 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:00:08,895 INFO L134 CoverageAnalysis]: Checked inductivity of 356 backedges. 12 proven. 8 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2022-07-19 22:00:08,895 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1962366172] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:00:08,895 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 22:00:08,895 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 6] total 14 [2022-07-19 22:00:08,896 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920234959] [2022-07-19 22:00:08,896 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 22:00:08,897 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 22:00:08,897 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:08,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 22:00:08,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2022-07-19 22:00:08,898 INFO L87 Difference]: Start difference. First operand 194 states and 262 transitions. Second operand has 14 states, 14 states have (on average 10.142857142857142) internal successors, (142), 11 states have internal predecessors, (142), 7 states have call successors, (76), 6 states have call predecessors, (76), 5 states have return successors, (73), 7 states have call predecessors, (73), 7 states have call successors, (73) [2022-07-19 22:00:09,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:00:09,581 INFO L93 Difference]: Finished difference Result 333 states and 446 transitions. [2022-07-19 22:00:09,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 22:00:09,581 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 10.142857142857142) internal successors, (142), 11 states have internal predecessors, (142), 7 states have call successors, (76), 6 states have call predecessors, (76), 5 states have return successors, (73), 7 states have call predecessors, (73), 7 states have call successors, (73) Word has length 210 [2022-07-19 22:00:09,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:00:09,583 INFO L225 Difference]: With dead ends: 333 [2022-07-19 22:00:09,583 INFO L226 Difference]: Without dead ends: 203 [2022-07-19 22:00:09,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 492 GetRequests, 474 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=291, Unknown=0, NotChecked=0, Total=380 [2022-07-19 22:00:09,584 INFO L413 NwaCegarLoop]: 183 mSDtfsCounter, 276 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 741 mSolverCounterSat, 181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 447 SdHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 181 IncrementalHoareTripleChecker+Valid, 741 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 22:00:09,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 447 Invalid, 922 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [181 Valid, 741 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 22:00:09,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2022-07-19 22:00:09,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 191. [2022-07-19 22:00:09,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 191 states, 113 states have (on average 1.168141592920354) internal successors, (132), 116 states have internal predecessors, (132), 59 states have call successors, (59), 17 states have call predecessors, (59), 18 states have return successors, (67), 58 states have call predecessors, (67), 58 states have call successors, (67) [2022-07-19 22:00:09,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 191 states to 191 states and 258 transitions. [2022-07-19 22:00:09,595 INFO L78 Accepts]: Start accepts. Automaton has 191 states and 258 transitions. Word has length 210 [2022-07-19 22:00:09,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:00:09,595 INFO L495 AbstractCegarLoop]: Abstraction has 191 states and 258 transitions. [2022-07-19 22:00:09,595 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 10.142857142857142) internal successors, (142), 11 states have internal predecessors, (142), 7 states have call successors, (76), 6 states have call predecessors, (76), 5 states have return successors, (73), 7 states have call predecessors, (73), 7 states have call successors, (73) [2022-07-19 22:00:09,596 INFO L276 IsEmpty]: Start isEmpty. Operand 191 states and 258 transitions. [2022-07-19 22:00:09,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-07-19 22:00:09,599 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:00:09,599 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:00:09,622 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 22:00:09,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:09,821 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:00:09,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:00:09,821 INFO L85 PathProgramCache]: Analyzing trace with hash -1227624248, now seen corresponding path program 1 times [2022-07-19 22:00:09,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:00:09,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2138624383] [2022-07-19 22:00:09,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:09,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:10,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:10,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:00:10,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:10,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:10,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:10,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:00:10,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:10,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 22:00:10,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:10,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:00:10,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:10,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 22:00:10,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:10,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 22:00:10,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:10,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:10,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:10,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:10,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:10,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:10,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:00:10,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:10,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 22:00:10,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:10,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:00:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:10,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 22:00:10,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:10,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 22:00:10,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:10,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:10,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:10,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:10,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:10,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:10,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:10,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 22:00:10,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:10,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 22:00:10,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:10,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-19 22:00:10,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:10,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-19 22:00:10,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:10,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 22:00:10,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:10,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-19 22:00:10,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:10,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-19 22:00:10,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:10,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-19 22:00:10,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:10,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-19 22:00:10,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:10,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-19 22:00:10,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:10,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-19 22:00:10,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:10,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-19 22:00:10,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:10,358 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 45 proven. 0 refuted. 0 times theorem prover too weak. 341 trivial. 0 not checked. [2022-07-19 22:00:10,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:10,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2138624383] [2022-07-19 22:00:10,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2138624383] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:00:10,359 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:00:10,359 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 22:00:10,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497778428] [2022-07-19 22:00:10,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:00:10,359 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 22:00:10,359 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:10,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 22:00:10,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2022-07-19 22:00:10,360 INFO L87 Difference]: Start difference. First operand 191 states and 258 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2022-07-19 22:00:10,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:00:10,993 INFO L93 Difference]: Finished difference Result 404 states and 564 transitions. [2022-07-19 22:00:10,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 22:00:10,993 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) Word has length 216 [2022-07-19 22:00:10,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:00:10,996 INFO L225 Difference]: With dead ends: 404 [2022-07-19 22:00:10,996 INFO L226 Difference]: Without dead ends: 228 [2022-07-19 22:00:10,997 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2022-07-19 22:00:10,997 INFO L413 NwaCegarLoop]: 195 mSDtfsCounter, 260 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 674 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 284 SdHoareTripleChecker+Valid, 443 SdHoareTripleChecker+Invalid, 823 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 674 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 22:00:10,998 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [284 Valid, 443 Invalid, 823 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 674 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 22:00:10,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 228 states. [2022-07-19 22:00:11,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 228 to 196. [2022-07-19 22:00:11,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 118 states have (on average 1.1779661016949152) internal successors, (139), 121 states have internal predecessors, (139), 59 states have call successors, (59), 17 states have call predecessors, (59), 18 states have return successors, (67), 58 states have call predecessors, (67), 58 states have call successors, (67) [2022-07-19 22:00:11,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 265 transitions. [2022-07-19 22:00:11,019 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 265 transitions. Word has length 216 [2022-07-19 22:00:11,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:00:11,022 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 265 transitions. [2022-07-19 22:00:11,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (27), 2 states have call predecessors, (27), 1 states have call successors, (27) [2022-07-19 22:00:11,022 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 265 transitions. [2022-07-19 22:00:11,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-07-19 22:00:11,023 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:00:11,024 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:00:11,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 22:00:11,024 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:00:11,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:00:11,025 INFO L85 PathProgramCache]: Analyzing trace with hash -969458810, now seen corresponding path program 1 times [2022-07-19 22:00:11,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:00:11,025 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [110924498] [2022-07-19 22:00:11,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:11,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:11,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:11,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:00:11,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:11,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:11,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:11,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:00:11,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:11,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 22:00:11,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:11,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:00:11,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:11,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 22:00:11,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:11,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 22:00:11,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:11,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:11,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:11,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:11,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:11,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:11,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:11,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:00:11,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:11,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 22:00:11,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:11,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:00:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:11,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 22:00:11,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:11,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 22:00:11,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:11,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:11,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:11,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:11,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:11,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:11,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:11,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 22:00:11,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:11,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 22:00:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:11,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-19 22:00:11,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:11,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-19 22:00:11,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:11,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 22:00:11,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:11,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-19 22:00:11,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:11,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-19 22:00:11,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:11,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-19 22:00:11,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:11,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-19 22:00:11,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:11,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-19 22:00:11,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:11,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-19 22:00:11,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:11,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-19 22:00:11,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:11,778 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 60 proven. 20 refuted. 0 times theorem prover too weak. 306 trivial. 0 not checked. [2022-07-19 22:00:11,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:11,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [110924498] [2022-07-19 22:00:11,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [110924498] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:00:11,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1125482916] [2022-07-19 22:00:11,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:11,780 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:11,780 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:00:11,781 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 22:00:11,783 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 22:00:12,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:12,275 INFO L263 TraceCheckSpWp]: Trace formula consists of 3129 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-19 22:00:12,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:00:12,382 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 22:00:12,701 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 138 proven. 0 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2022-07-19 22:00:12,701 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:00:12,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1125482916] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:00:12,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:00:12,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [15] total 26 [2022-07-19 22:00:12,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812029092] [2022-07-19 22:00:12,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:00:12,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-19 22:00:12,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:12,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-19 22:00:12,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=586, Unknown=0, NotChecked=0, Total=650 [2022-07-19 22:00:12,702 INFO L87 Difference]: Start difference. First operand 196 states and 265 transitions. Second operand has 13 states, 12 states have (on average 6.833333333333333) internal successors, (82), 10 states have internal predecessors, (82), 5 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (30), 6 states have call predecessors, (30), 5 states have call successors, (30) [2022-07-19 22:00:12,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:00:12,862 INFO L93 Difference]: Finished difference Result 400 states and 535 transitions. [2022-07-19 22:00:12,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 22:00:12,862 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.833333333333333) internal successors, (82), 10 states have internal predecessors, (82), 5 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (30), 6 states have call predecessors, (30), 5 states have call successors, (30) Word has length 216 [2022-07-19 22:00:12,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:00:12,863 INFO L225 Difference]: With dead ends: 400 [2022-07-19 22:00:12,864 INFO L226 Difference]: Without dead ends: 215 [2022-07-19 22:00:12,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=634, Unknown=0, NotChecked=0, Total=702 [2022-07-19 22:00:12,865 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 25 mSDsluCounter, 2099 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 2332 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 159 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:00:12,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 2332 Invalid, 279 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 119 Invalid, 0 Unknown, 159 Unchecked, 0.1s Time] [2022-07-19 22:00:12,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2022-07-19 22:00:12,873 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 215. [2022-07-19 22:00:12,873 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 215 states, 136 states have (on average 1.1911764705882353) internal successors, (162), 139 states have internal predecessors, (162), 59 states have call successors, (59), 18 states have call predecessors, (59), 19 states have return successors, (67), 58 states have call predecessors, (67), 58 states have call successors, (67) [2022-07-19 22:00:12,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 288 transitions. [2022-07-19 22:00:12,874 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 288 transitions. Word has length 216 [2022-07-19 22:00:12,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:00:12,874 INFO L495 AbstractCegarLoop]: Abstraction has 215 states and 288 transitions. [2022-07-19 22:00:12,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.833333333333333) internal successors, (82), 10 states have internal predecessors, (82), 5 states have call successors, (32), 3 states have call predecessors, (32), 5 states have return successors, (30), 6 states have call predecessors, (30), 5 states have call successors, (30) [2022-07-19 22:00:12,875 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 288 transitions. [2022-07-19 22:00:12,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2022-07-19 22:00:12,876 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:00:12,876 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:00:12,899 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 22:00:13,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:13,084 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:00:13,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:00:13,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1130279620, now seen corresponding path program 1 times [2022-07-19 22:00:13,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:00:13,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [273742184] [2022-07-19 22:00:13,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:13,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:13,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:00:13,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:13,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:00:13,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 22:00:13,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:00:13,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 22:00:13,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 22:00:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:13,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:13,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:13,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:00:13,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 22:00:13,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:00:13,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 22:00:13,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 22:00:13,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:13,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:13,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:13,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 22:00:13,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 22:00:13,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-19 22:00:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-19 22:00:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 22:00:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-19 22:00:13,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2022-07-19 22:00:13,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-19 22:00:13,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-19 22:00:13,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-19 22:00:13,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-19 22:00:13,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-19 22:00:13,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,343 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 356 trivial. 0 not checked. [2022-07-19 22:00:13,344 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:13,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [273742184] [2022-07-19 22:00:13,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [273742184] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:00:13,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592367196] [2022-07-19 22:00:13,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:13,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:13,344 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:00:13,345 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 22:00:13,346 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 22:00:13,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,805 INFO L263 TraceCheckSpWp]: Trace formula consists of 3124 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 22:00:13,809 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:00:13,818 INFO L134 CoverageAnalysis]: Checked inductivity of 386 backedges. 118 proven. 0 refuted. 0 times theorem prover too weak. 268 trivial. 0 not checked. [2022-07-19 22:00:13,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:00:13,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592367196] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:00:13,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:00:13,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2022-07-19 22:00:13,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059502896] [2022-07-19 22:00:13,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:00:13,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 22:00:13,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:13,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 22:00:13,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 22:00:13,821 INFO L87 Difference]: Start difference. First operand 215 states and 288 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-19 22:00:13,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:00:13,844 INFO L93 Difference]: Finished difference Result 409 states and 556 transitions. [2022-07-19 22:00:13,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 22:00:13,845 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 216 [2022-07-19 22:00:13,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:00:13,846 INFO L225 Difference]: With dead ends: 409 [2022-07-19 22:00:13,846 INFO L226 Difference]: Without dead ends: 224 [2022-07-19 22:00:13,847 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 281 GetRequests, 275 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-19 22:00:13,851 INFO L413 NwaCegarLoop]: 252 mSDtfsCounter, 20 mSDsluCounter, 463 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 715 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 22:00:13,851 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 715 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 22:00:13,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-07-19 22:00:13,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 207. [2022-07-19 22:00:13,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 129 states have (on average 1.186046511627907) internal successors, (153), 131 states have internal predecessors, (153), 59 states have call successors, (59), 18 states have call predecessors, (59), 18 states have return successors, (66), 58 states have call predecessors, (66), 58 states have call successors, (66) [2022-07-19 22:00:13,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 278 transitions. [2022-07-19 22:00:13,861 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 278 transitions. Word has length 216 [2022-07-19 22:00:13,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:00:13,861 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 278 transitions. [2022-07-19 22:00:13,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-19 22:00:13,861 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 278 transitions. [2022-07-19 22:00:13,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2022-07-19 22:00:13,862 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:00:13,862 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:00:13,886 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 22:00:14,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:14,076 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:00:14,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:00:14,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1998809472, now seen corresponding path program 2 times [2022-07-19 22:00:14,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:00:14,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1947919723] [2022-07-19 22:00:14,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:14,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:14,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:00:14,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:14,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:00:14,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 22:00:14,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:00:14,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 22:00:14,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 22:00:14,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:14,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:14,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:14,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:00:14,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 22:00:14,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 22:00:14,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 22:00:14,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 22:00:14,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:14,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:14,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:14,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 22:00:14,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-19 22:00:14,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-19 22:00:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-19 22:00:14,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-19 22:00:14,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-19 22:00:14,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-19 22:00:14,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2022-07-19 22:00:14,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-19 22:00:14,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-19 22:00:14,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-07-19 22:00:14,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-07-19 22:00:14,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,447 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 342 trivial. 0 not checked. [2022-07-19 22:00:14,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:14,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1947919723] [2022-07-19 22:00:14,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1947919723] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:00:14,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [665395980] [2022-07-19 22:00:14,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 22:00:14,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:14,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:00:14,449 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 22:00:14,479 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 22:00:15,410 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 22:00:15,410 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:00:15,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 3136 conjuncts, 38 conjunts are in the unsatisfiable core [2022-07-19 22:00:15,428 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:00:15,531 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 22:00:15,729 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2022-07-19 22:00:15,729 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:00:15,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [665395980] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:00:15,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:00:15,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [12] total 23 [2022-07-19 22:00:15,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120747215] [2022-07-19 22:00:15,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:00:15,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-19 22:00:15,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:15,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-19 22:00:15,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=452, Unknown=0, NotChecked=0, Total=506 [2022-07-19 22:00:15,731 INFO L87 Difference]: Start difference. First operand 207 states and 278 transitions. Second operand has 13 states, 12 states have (on average 7.583333333333333) internal successors, (91), 10 states have internal predecessors, (91), 5 states have call successors, (31), 3 states have call predecessors, (31), 5 states have return successors, (29), 6 states have call predecessors, (29), 5 states have call successors, (29) [2022-07-19 22:00:15,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:00:15,840 INFO L93 Difference]: Finished difference Result 387 states and 519 transitions. [2022-07-19 22:00:15,840 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 22:00:15,840 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 7.583333333333333) internal successors, (91), 10 states have internal predecessors, (91), 5 states have call successors, (31), 3 states have call predecessors, (31), 5 states have return successors, (29), 6 states have call predecessors, (29), 5 states have call successors, (29) Word has length 220 [2022-07-19 22:00:15,841 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:00:15,841 INFO L225 Difference]: With dead ends: 387 [2022-07-19 22:00:15,842 INFO L226 Difference]: Without dead ends: 229 [2022-07-19 22:00:15,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 288 GetRequests, 266 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2022-07-19 22:00:15,843 INFO L413 NwaCegarLoop]: 250 mSDtfsCounter, 24 mSDsluCounter, 1542 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 1792 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 116 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:00:15,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [27 Valid, 1792 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 67 Invalid, 0 Unknown, 116 Unchecked, 0.1s Time] [2022-07-19 22:00:15,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-07-19 22:00:15,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 207. [2022-07-19 22:00:15,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 207 states, 129 states have (on average 1.186046511627907) internal successors, (153), 131 states have internal predecessors, (153), 59 states have call successors, (59), 18 states have call predecessors, (59), 18 states have return successors, (65), 58 states have call predecessors, (65), 58 states have call successors, (65) [2022-07-19 22:00:15,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 207 states to 207 states and 277 transitions. [2022-07-19 22:00:15,853 INFO L78 Accepts]: Start accepts. Automaton has 207 states and 277 transitions. Word has length 220 [2022-07-19 22:00:15,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:00:15,854 INFO L495 AbstractCegarLoop]: Abstraction has 207 states and 277 transitions. [2022-07-19 22:00:15,854 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 7.583333333333333) internal successors, (91), 10 states have internal predecessors, (91), 5 states have call successors, (31), 3 states have call predecessors, (31), 5 states have return successors, (29), 6 states have call predecessors, (29), 5 states have call successors, (29) [2022-07-19 22:00:15,854 INFO L276 IsEmpty]: Start isEmpty. Operand 207 states and 277 transitions. [2022-07-19 22:00:15,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2022-07-19 22:00:15,855 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:00:15,855 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:00:15,893 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-19 22:00:16,078 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,SelfDestructingSolverStorable9 [2022-07-19 22:00:16,078 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:00:16,078 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:00:16,078 INFO L85 PathProgramCache]: Analyzing trace with hash 2120990534, now seen corresponding path program 3 times [2022-07-19 22:00:16,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:00:16,079 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801098677] [2022-07-19 22:00:16,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:16,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:16,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:16,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:00:16,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:16,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:16,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:16,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:00:16,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:16,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 22:00:16,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:16,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:00:16,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:16,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 22:00:16,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:16,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 22:00:16,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:16,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:16,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:16,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:16,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:16,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:16,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:00:16,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:16,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 22:00:16,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:16,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 22:00:16,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:16,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 22:00:16,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:16,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 22:00:16,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:16,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:16,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:16,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:16,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:16,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:16,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:16,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 22:00:16,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:16,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 122 [2022-07-19 22:00:16,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:16,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-19 22:00:16,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:16,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-19 22:00:16,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:16,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-19 22:00:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:16,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 152 [2022-07-19 22:00:16,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:16,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 158 [2022-07-19 22:00:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:16,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 170 [2022-07-19 22:00:16,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:16,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-07-19 22:00:16,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:16,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2022-07-19 22:00:16,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:16,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 196 [2022-07-19 22:00:16,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:16,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-19 22:00:16,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:16,521 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 6 proven. 43 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2022-07-19 22:00:16,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:16,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801098677] [2022-07-19 22:00:16,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801098677] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:00:16,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [549748727] [2022-07-19 22:00:16,522 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 22:00:16,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:16,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:00:16,523 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 22:00:16,524 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 22:00:17,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-19 22:00:17,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:00:17,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 2573 conjuncts, 30 conjunts are in the unsatisfiable core [2022-07-19 22:00:17,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:00:18,000 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 163 proven. 4 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-07-19 22:00:18,001 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:00:18,364 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-19 22:00:18,364 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2022-07-19 22:00:18,370 INFO L356 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2022-07-19 22:00:18,370 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 12 [2022-07-19 22:00:18,450 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 88 proven. 10 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-07-19 22:00:18,450 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [549748727] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:00:18,450 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 22:00:18,450 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12, 11] total 28 [2022-07-19 22:00:18,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961107676] [2022-07-19 22:00:18,450 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 22:00:18,451 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-19 22:00:18,451 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:18,452 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-19 22:00:18,453 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=672, Unknown=0, NotChecked=0, Total=756 [2022-07-19 22:00:18,453 INFO L87 Difference]: Start difference. First operand 207 states and 277 transitions. Second operand has 28 states, 27 states have (on average 4.592592592592593) internal successors, (124), 24 states have internal predecessors, (124), 4 states have call successors, (51), 6 states have call predecessors, (51), 7 states have return successors, (47), 4 states have call predecessors, (47), 4 states have call successors, (47) [2022-07-19 22:00:21,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:00:21,777 INFO L93 Difference]: Finished difference Result 505 states and 694 transitions. [2022-07-19 22:00:21,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 49 states. [2022-07-19 22:00:21,778 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 27 states have (on average 4.592592592592593) internal successors, (124), 24 states have internal predecessors, (124), 4 states have call successors, (51), 6 states have call predecessors, (51), 7 states have return successors, (47), 4 states have call predecessors, (47), 4 states have call successors, (47) Word has length 224 [2022-07-19 22:00:21,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:00:21,779 INFO L225 Difference]: With dead ends: 505 [2022-07-19 22:00:21,779 INFO L226 Difference]: Without dead ends: 304 [2022-07-19 22:00:21,781 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 570 GetRequests, 494 SyntacticMatches, 8 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1052 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=781, Invalid=4049, Unknown=0, NotChecked=0, Total=4830 [2022-07-19 22:00:21,781 INFO L413 NwaCegarLoop]: 205 mSDtfsCounter, 615 mSDsluCounter, 975 mSDsCounter, 0 mSdLazyCounter, 3041 mSolverCounterSat, 302 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 640 SdHoareTripleChecker+Valid, 1180 SdHoareTripleChecker+Invalid, 3763 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 302 IncrementalHoareTripleChecker+Valid, 3041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 420 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-19 22:00:21,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [640 Valid, 1180 Invalid, 3763 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [302 Valid, 3041 Invalid, 0 Unknown, 420 Unchecked, 1.7s Time] [2022-07-19 22:00:21,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 304 states. [2022-07-19 22:00:21,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 304 to 251. [2022-07-19 22:00:21,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 251 states, 166 states have (on average 1.1927710843373494) internal successors, (198), 170 states have internal predecessors, (198), 62 states have call successors, (62), 20 states have call predecessors, (62), 22 states have return successors, (84), 61 states have call predecessors, (84), 61 states have call successors, (84) [2022-07-19 22:00:21,792 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 344 transitions. [2022-07-19 22:00:21,792 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 344 transitions. Word has length 224 [2022-07-19 22:00:21,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:00:21,792 INFO L495 AbstractCegarLoop]: Abstraction has 251 states and 344 transitions. [2022-07-19 22:00:21,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 27 states have (on average 4.592592592592593) internal successors, (124), 24 states have internal predecessors, (124), 4 states have call successors, (51), 6 states have call predecessors, (51), 7 states have return successors, (47), 4 states have call predecessors, (47), 4 states have call successors, (47) [2022-07-19 22:00:21,792 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 344 transitions. [2022-07-19 22:00:21,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-19 22:00:21,793 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:00:21,793 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:00:21,818 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 22:00:22,007 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:22,007 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:00:22,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:00:22,008 INFO L85 PathProgramCache]: Analyzing trace with hash 490308611, now seen corresponding path program 1 times [2022-07-19 22:00:22,008 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:00:22,008 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141054111] [2022-07-19 22:00:22,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:22,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:22,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:22,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:00:22,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:22,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:22,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:22,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:00:22,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:22,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 22:00:22,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:22,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:00:22,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:22,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 22:00:22,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:22,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 22:00:22,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:22,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:22,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:22,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:22,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:22,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:22,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:22,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:00:22,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:22,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:00:22,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:22,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:00:22,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:22,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 22:00:22,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:22,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 22:00:22,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:22,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:22,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:22,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:22,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:22,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:22,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:22,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 22:00:22,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:22,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-19 22:00:22,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:22,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-19 22:00:22,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:22,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-19 22:00:22,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:22,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-19 22:00:22,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:22,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-19 22:00:22,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:22,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-19 22:00:22,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:22,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-19 22:00:22,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:22,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-19 22:00:22,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:22,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-07-19 22:00:22,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:22,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-07-19 22:00:22,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:22,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-19 22:00:22,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:22,300 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 372 trivial. 0 not checked. [2022-07-19 22:00:22,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:22,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141054111] [2022-07-19 22:00:22,301 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141054111] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:00:22,301 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [557032072] [2022-07-19 22:00:22,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:22,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:22,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:00:22,302 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 22:00:22,303 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 22:00:22,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:22,817 INFO L263 TraceCheckSpWp]: Trace formula consists of 3143 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 22:00:22,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:00:22,839 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 124 proven. 0 refuted. 0 times theorem prover too weak. 274 trivial. 0 not checked. [2022-07-19 22:00:22,839 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:00:22,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [557032072] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:00:22,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:00:22,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2022-07-19 22:00:22,840 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719374200] [2022-07-19 22:00:22,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:00:22,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 22:00:22,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:22,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 22:00:22,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 22:00:22,841 INFO L87 Difference]: Start difference. First operand 251 states and 344 transitions. Second operand has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-19 22:00:22,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:00:22,860 INFO L93 Difference]: Finished difference Result 500 states and 691 transitions. [2022-07-19 22:00:22,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 22:00:22,860 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 226 [2022-07-19 22:00:22,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:00:22,862 INFO L225 Difference]: With dead ends: 500 [2022-07-19 22:00:22,862 INFO L226 Difference]: Without dead ends: 264 [2022-07-19 22:00:22,863 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-19 22:00:22,864 INFO L413 NwaCegarLoop]: 238 mSDtfsCounter, 9 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 708 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 22:00:22,864 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 708 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 22:00:22,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2022-07-19 22:00:22,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 255. [2022-07-19 22:00:22,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 170 states have (on average 1.188235294117647) internal successors, (202), 174 states have internal predecessors, (202), 62 states have call successors, (62), 20 states have call predecessors, (62), 22 states have return successors, (84), 61 states have call predecessors, (84), 61 states have call successors, (84) [2022-07-19 22:00:22,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 348 transitions. [2022-07-19 22:00:22,879 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 348 transitions. Word has length 226 [2022-07-19 22:00:22,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:00:22,879 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 348 transitions. [2022-07-19 22:00:22,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 21.25) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-19 22:00:22,880 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 348 transitions. [2022-07-19 22:00:22,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-19 22:00:22,881 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:00:22,881 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:00:22,903 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 22:00:23,102 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,SelfDestructingSolverStorable11 [2022-07-19 22:00:23,103 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:00:23,103 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:00:23,103 INFO L85 PathProgramCache]: Analyzing trace with hash 910460735, now seen corresponding path program 1 times [2022-07-19 22:00:23,103 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:00:23,103 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215537018] [2022-07-19 22:00:23,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:23,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:23,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:00:23,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:23,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:00:23,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 22:00:23,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:00:23,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 22:00:23,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 22:00:23,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:23,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:23,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:23,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:00:23,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:00:23,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:00:23,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 22:00:23,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 22:00:23,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:23,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:23,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:23,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 22:00:23,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-19 22:00:23,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-19 22:00:23,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-19 22:00:23,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-19 22:00:23,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-19 22:00:23,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-19 22:00:23,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-19 22:00:23,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-19 22:00:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-07-19 22:00:23,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-07-19 22:00:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-19 22:00:23,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,350 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 350 trivial. 0 not checked. [2022-07-19 22:00:23,350 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:23,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215537018] [2022-07-19 22:00:23,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215537018] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:00:23,350 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [115516286] [2022-07-19 22:00:23,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:23,351 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:23,351 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:00:23,352 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 22:00:23,353 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 22:00:23,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:23,854 INFO L263 TraceCheckSpWp]: Trace formula consists of 3145 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 22:00:23,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:00:23,875 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 108 proven. 0 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2022-07-19 22:00:23,875 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:00:23,875 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [115516286] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:00:23,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:00:23,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 7 [2022-07-19 22:00:23,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [933079024] [2022-07-19 22:00:23,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:00:23,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 22:00:23,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:23,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 22:00:23,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 22:00:23,878 INFO L87 Difference]: Start difference. First operand 255 states and 348 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-19 22:00:23,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:00:23,930 INFO L93 Difference]: Finished difference Result 507 states and 704 transitions. [2022-07-19 22:00:23,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 22:00:23,935 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) Word has length 226 [2022-07-19 22:00:23,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:00:23,936 INFO L225 Difference]: With dead ends: 507 [2022-07-19 22:00:23,940 INFO L226 Difference]: Without dead ends: 267 [2022-07-19 22:00:23,942 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 291 GetRequests, 285 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-19 22:00:23,949 INFO L413 NwaCegarLoop]: 255 mSDtfsCounter, 26 mSDsluCounter, 468 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:00:23,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 723 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 22:00:23,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-07-19 22:00:23,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 247. [2022-07-19 22:00:23,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 163 states have (on average 1.1717791411042944) internal successors, (191), 166 states have internal predecessors, (191), 62 states have call successors, (62), 20 states have call predecessors, (62), 21 states have return successors, (77), 61 states have call predecessors, (77), 61 states have call successors, (77) [2022-07-19 22:00:23,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 330 transitions. [2022-07-19 22:00:23,973 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 330 transitions. Word has length 226 [2022-07-19 22:00:23,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:00:23,973 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 330 transitions. [2022-07-19 22:00:23,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (32), 2 states have call predecessors, (32), 2 states have return successors, (30), 2 states have call predecessors, (30), 2 states have call successors, (30) [2022-07-19 22:00:23,973 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 330 transitions. [2022-07-19 22:00:23,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-19 22:00:23,974 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:00:23,974 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:00:23,995 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 22:00:24,174 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,SelfDestructingSolverStorable12 [2022-07-19 22:00:24,175 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:00:24,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:00:24,175 INFO L85 PathProgramCache]: Analyzing trace with hash 220629245, now seen corresponding path program 2 times [2022-07-19 22:00:24,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:00:24,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60914607] [2022-07-19 22:00:24,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:24,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:24,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:24,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:00:24,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:24,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:24,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:24,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:00:24,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:24,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 22:00:24,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:24,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:00:24,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:24,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 22:00:24,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:24,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 22:00:24,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:24,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:24,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:24,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:24,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:24,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:24,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:24,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:00:24,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:24,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:00:24,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:24,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:00:24,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:24,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 22:00:24,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:24,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 22:00:24,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:24,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:24,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:24,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:24,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:24,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:24,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:24,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 22:00:24,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:24,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-19 22:00:24,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:24,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-19 22:00:24,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:24,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-19 22:00:24,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:24,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-19 22:00:24,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:24,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-19 22:00:24,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:24,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-19 22:00:24,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:24,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-19 22:00:24,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:24,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-19 22:00:24,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:24,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-07-19 22:00:24,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:24,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-07-19 22:00:24,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:24,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-19 22:00:24,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:24,538 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 20 proven. 29 refuted. 0 times theorem prover too weak. 349 trivial. 0 not checked. [2022-07-19 22:00:24,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:24,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60914607] [2022-07-19 22:00:24,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60914607] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:00:24,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1611427868] [2022-07-19 22:00:24,539 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 22:00:24,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:24,539 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:00:24,540 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 22:00:24,541 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 22:00:25,053 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 22:00:25,053 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:00:25,064 INFO L263 TraceCheckSpWp]: Trace formula consists of 3140 conjuncts, 56 conjunts are in the unsatisfiable core [2022-07-19 22:00:25,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:00:25,138 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 22:00:25,343 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:00:25,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:00:25,344 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:00:25,345 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 32 [2022-07-19 22:00:25,347 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 22 treesize of output 14 [2022-07-19 22:00:25,655 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 286 proven. 0 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2022-07-19 22:00:25,656 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:00:25,656 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1611427868] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:00:25,656 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:00:25,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [12] total 26 [2022-07-19 22:00:25,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [470950234] [2022-07-19 22:00:25,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:00:25,657 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-19 22:00:25,657 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:25,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-19 22:00:25,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=584, Unknown=0, NotChecked=0, Total=650 [2022-07-19 22:00:25,658 INFO L87 Difference]: Start difference. First operand 247 states and 330 transitions. Second operand has 16 states, 15 states have (on average 7.466666666666667) internal successors, (112), 15 states have internal predecessors, (112), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) [2022-07-19 22:00:26,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:00:26,550 INFO L93 Difference]: Finished difference Result 512 states and 702 transitions. [2022-07-19 22:00:26,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 22:00:26,551 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 7.466666666666667) internal successors, (112), 15 states have internal predecessors, (112), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) Word has length 226 [2022-07-19 22:00:26,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:00:26,553 INFO L225 Difference]: With dead ends: 512 [2022-07-19 22:00:26,553 INFO L226 Difference]: Without dead ends: 335 [2022-07-19 22:00:26,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 264 SyntacticMatches, 8 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=106, Invalid=1016, Unknown=0, NotChecked=0, Total=1122 [2022-07-19 22:00:26,555 INFO L413 NwaCegarLoop]: 253 mSDtfsCounter, 116 mSDsluCounter, 969 mSDsCounter, 0 mSdLazyCounter, 1284 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 1889 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 1284 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 519 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-19 22:00:26,555 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [154 Valid, 1222 Invalid, 1889 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 1284 Invalid, 0 Unknown, 519 Unchecked, 0.7s Time] [2022-07-19 22:00:26,555 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2022-07-19 22:00:26,564 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 287. [2022-07-19 22:00:26,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 193 states have (on average 1.160621761658031) internal successors, (224), 197 states have internal predecessors, (224), 68 states have call successors, (68), 23 states have call predecessors, (68), 25 states have return successors, (93), 67 states have call predecessors, (93), 67 states have call successors, (93) [2022-07-19 22:00:26,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 385 transitions. [2022-07-19 22:00:26,566 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 385 transitions. Word has length 226 [2022-07-19 22:00:26,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:00:26,567 INFO L495 AbstractCegarLoop]: Abstraction has 287 states and 385 transitions. [2022-07-19 22:00:26,567 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 7.466666666666667) internal successors, (112), 15 states have internal predecessors, (112), 7 states have call successors, (31), 4 states have call predecessors, (31), 7 states have return successors, (29), 7 states have call predecessors, (29), 7 states have call successors, (29) [2022-07-19 22:00:26,567 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 385 transitions. [2022-07-19 22:00:26,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-19 22:00:26,568 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:00:26,569 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:00:26,596 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 22:00:26,788 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,SelfDestructingSolverStorable13 [2022-07-19 22:00:26,788 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:00:26,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:00:26,789 INFO L85 PathProgramCache]: Analyzing trace with hash 1947774207, now seen corresponding path program 3 times [2022-07-19 22:00:26,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:00:26,789 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821554773] [2022-07-19 22:00:26,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:26,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:26,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:27,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:00:27,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:27,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:27,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:27,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:00:27,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:27,076 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 22:00:27,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:27,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:00:27,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:27,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 22:00:27,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:27,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 22:00:27,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:27,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:27,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:27,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:27,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:27,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:27,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:27,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:00:27,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:27,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:00:27,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:27,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:00:27,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:27,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 22:00:27,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:27,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 22:00:27,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:27,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:27,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:27,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:27,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:27,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:27,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:27,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 22:00:27,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:27,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-19 22:00:27,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:27,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-19 22:00:27,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:27,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-19 22:00:27,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:27,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-19 22:00:27,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:27,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-19 22:00:27,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:27,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-19 22:00:27,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:27,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-19 22:00:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:27,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-19 22:00:27,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:27,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-07-19 22:00:27,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:27,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-07-19 22:00:27,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:27,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-19 22:00:27,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:27,487 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 23 proven. 47 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2022-07-19 22:00:27,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:27,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821554773] [2022-07-19 22:00:27,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821554773] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:00:27,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [340350618] [2022-07-19 22:00:27,487 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 22:00:27,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:27,488 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:00:27,489 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 22:00:27,490 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 22:00:28,424 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-19 22:00:28,424 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:00:28,433 INFO L263 TraceCheckSpWp]: Trace formula consists of 2570 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-19 22:00:28,437 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:00:28,982 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 161 proven. 6 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-07-19 22:00:28,982 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:00:29,313 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-19 22:00:29,315 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 19 [2022-07-19 22:00:29,402 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 88 proven. 10 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-07-19 22:00:29,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [340350618] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:00:29,403 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 22:00:29,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 12, 11] total 35 [2022-07-19 22:00:29,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2119448806] [2022-07-19 22:00:29,403 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 22:00:29,404 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-07-19 22:00:29,404 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:29,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-07-19 22:00:29,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1076, Unknown=0, NotChecked=0, Total=1190 [2022-07-19 22:00:29,405 INFO L87 Difference]: Start difference. First operand 287 states and 385 transitions. Second operand has 35 states, 33 states have (on average 4.333333333333333) internal successors, (143), 30 states have internal predecessors, (143), 8 states have call successors, (58), 6 states have call predecessors, (58), 9 states have return successors, (54), 8 states have call predecessors, (54), 8 states have call successors, (54) [2022-07-19 22:00:33,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:00:33,589 INFO L93 Difference]: Finished difference Result 607 states and 895 transitions. [2022-07-19 22:00:33,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-19 22:00:33,589 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 33 states have (on average 4.333333333333333) internal successors, (143), 30 states have internal predecessors, (143), 8 states have call successors, (58), 6 states have call predecessors, (58), 9 states have return successors, (54), 8 states have call predecessors, (54), 8 states have call successors, (54) Word has length 226 [2022-07-19 22:00:33,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:00:33,594 INFO L225 Difference]: With dead ends: 607 [2022-07-19 22:00:33,594 INFO L226 Difference]: Without dead ends: 417 [2022-07-19 22:00:33,596 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 567 GetRequests, 499 SyntacticMatches, 7 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 874 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=431, Invalid=3475, Unknown=0, NotChecked=0, Total=3906 [2022-07-19 22:00:33,596 INFO L413 NwaCegarLoop]: 310 mSDtfsCounter, 412 mSDsluCounter, 2711 mSDsCounter, 0 mSdLazyCounter, 5117 mSolverCounterSat, 374 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 3021 SdHoareTripleChecker+Invalid, 6931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 374 IncrementalHoareTripleChecker+Valid, 5117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1440 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-19 22:00:33,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 3021 Invalid, 6931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [374 Valid, 5117 Invalid, 0 Unknown, 1440 Unchecked, 3.2s Time] [2022-07-19 22:00:33,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-07-19 22:00:33,610 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 304. [2022-07-19 22:00:33,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 304 states, 205 states have (on average 1.146341463414634) internal successors, (235), 211 states have internal predecessors, (235), 71 states have call successors, (71), 23 states have call predecessors, (71), 27 states have return successors, (114), 70 states have call predecessors, (114), 70 states have call successors, (114) [2022-07-19 22:00:33,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 304 states to 304 states and 420 transitions. [2022-07-19 22:00:33,613 INFO L78 Accepts]: Start accepts. Automaton has 304 states and 420 transitions. Word has length 226 [2022-07-19 22:00:33,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:00:33,614 INFO L495 AbstractCegarLoop]: Abstraction has 304 states and 420 transitions. [2022-07-19 22:00:33,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 33 states have (on average 4.333333333333333) internal successors, (143), 30 states have internal predecessors, (143), 8 states have call successors, (58), 6 states have call predecessors, (58), 9 states have return successors, (54), 8 states have call predecessors, (54), 8 states have call successors, (54) [2022-07-19 22:00:33,615 INFO L276 IsEmpty]: Start isEmpty. Operand 304 states and 420 transitions. [2022-07-19 22:00:33,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2022-07-19 22:00:33,616 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:00:33,616 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:00:33,640 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-19 22:00:33,832 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,SelfDestructingSolverStorable14 [2022-07-19 22:00:33,832 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:00:33,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:00:33,832 INFO L85 PathProgramCache]: Analyzing trace with hash -133423481, now seen corresponding path program 1 times [2022-07-19 22:00:33,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:00:33,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [187722369] [2022-07-19 22:00:33,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:33,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:34,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:00:34,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:34,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:00:34,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 22:00:34,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:00:34,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 22:00:34,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 22:00:34,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:34,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:34,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:00:34,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:00:34,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:00:34,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 22:00:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 22:00:34,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:34,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:34,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:34,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 22:00:34,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-19 22:00:34,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-19 22:00:34,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 136 [2022-07-19 22:00:34,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-19 22:00:34,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-19 22:00:34,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 160 [2022-07-19 22:00:34,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 172 [2022-07-19 22:00:34,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-19 22:00:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 192 [2022-07-19 22:00:34,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-07-19 22:00:34,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-19 22:00:34,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,443 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 23 proven. 47 refuted. 0 times theorem prover too weak. 328 trivial. 0 not checked. [2022-07-19 22:00:34,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:34,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [187722369] [2022-07-19 22:00:34,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [187722369] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:00:34,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061675128] [2022-07-19 22:00:34,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:34,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:34,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:00:34,445 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 22:00:34,447 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 22:00:34,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,951 INFO L263 TraceCheckSpWp]: Trace formula consists of 3139 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-19 22:00:34,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:00:35,064 INFO L134 CoverageAnalysis]: Checked inductivity of 398 backedges. 212 proven. 0 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2022-07-19 22:00:35,064 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:00:35,064 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061675128] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:00:35,064 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:00:35,064 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [20] total 27 [2022-07-19 22:00:35,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311910021] [2022-07-19 22:00:35,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:00:35,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 22:00:35,065 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:35,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 22:00:35,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=643, Unknown=0, NotChecked=0, Total=702 [2022-07-19 22:00:35,066 INFO L87 Difference]: Start difference. First operand 304 states and 420 transitions. Second operand has 9 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-07-19 22:00:35,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:00:35,234 INFO L93 Difference]: Finished difference Result 531 states and 724 transitions. [2022-07-19 22:00:35,234 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 22:00:35,235 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 226 [2022-07-19 22:00:35,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:00:35,237 INFO L225 Difference]: With dead ends: 531 [2022-07-19 22:00:35,237 INFO L226 Difference]: Without dead ends: 267 [2022-07-19 22:00:35,239 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 304 GetRequests, 276 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=797, Unknown=0, NotChecked=0, Total=870 [2022-07-19 22:00:35,239 INFO L413 NwaCegarLoop]: 229 mSDtfsCounter, 12 mSDsluCounter, 1540 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1769 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:00:35,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1769 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:00:35,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2022-07-19 22:00:35,251 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 242. [2022-07-19 22:00:35,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 158 states have (on average 1.1582278481012658) internal successors, (183), 161 states have internal predecessors, (183), 62 states have call successors, (62), 20 states have call predecessors, (62), 21 states have return successors, (76), 61 states have call predecessors, (76), 61 states have call successors, (76) [2022-07-19 22:00:35,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 321 transitions. [2022-07-19 22:00:35,255 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 321 transitions. Word has length 226 [2022-07-19 22:00:35,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:00:35,256 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 321 transitions. [2022-07-19 22:00:35,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 10.75) internal successors, (86), 8 states have internal predecessors, (86), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-07-19 22:00:35,256 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 321 transitions. [2022-07-19 22:00:35,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2022-07-19 22:00:35,257 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:00:35,258 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:00:35,282 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-19 22:00:35,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:35,480 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:00:35,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:00:35,480 INFO L85 PathProgramCache]: Analyzing trace with hash -1037491156, now seen corresponding path program 2 times [2022-07-19 22:00:35,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:00:35,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1852596385] [2022-07-19 22:00:35,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:35,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:35,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:35,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:00:35,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:35,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:35,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:35,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:00:35,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:35,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 22:00:35,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:35,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:00:35,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:35,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 22:00:35,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:35,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 22:00:35,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:35,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:35,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:35,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:35,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:35,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:35,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:35,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:00:35,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:35,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:00:35,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:35,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:00:35,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:35,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 22:00:35,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:35,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 22:00:35,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:35,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:35,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:35,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:35,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:35,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:35,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:35,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 22:00:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:35,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-19 22:00:35,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:35,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 22:00:35,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:35,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-19 22:00:35,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:35,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-19 22:00:35,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:35,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-19 22:00:35,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:35,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-19 22:00:35,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:35,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 174 [2022-07-19 22:00:35,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:35,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2022-07-19 22:00:35,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:35,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 194 [2022-07-19 22:00:35,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:36,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-07-19 22:00:36,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:36,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2022-07-19 22:00:36,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:36,012 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 60 proven. 20 refuted. 0 times theorem prover too weak. 320 trivial. 0 not checked. [2022-07-19 22:00:36,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:36,012 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1852596385] [2022-07-19 22:00:36,013 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1852596385] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:00:36,013 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [700511628] [2022-07-19 22:00:36,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 22:00:36,013 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:36,013 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:00:36,014 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 22:00:36,016 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 22:00:36,535 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 22:00:36,535 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:00:36,546 INFO L263 TraceCheckSpWp]: Trace formula consists of 3144 conjuncts, 46 conjunts are in the unsatisfiable core [2022-07-19 22:00:36,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:00:36,807 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:00:36,808 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 22 treesize of output 23 [2022-07-19 22:00:36,810 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 24 treesize of output 16 [2022-07-19 22:00:37,190 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 271 proven. 19 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-07-19 22:00:37,191 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:00:37,624 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-19 22:00:37,624 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 22:00:37,680 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 36 proven. 64 refuted. 0 times theorem prover too weak. 300 trivial. 0 not checked. [2022-07-19 22:00:37,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [700511628] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:00:37,681 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 22:00:37,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 11] total 33 [2022-07-19 22:00:37,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369524636] [2022-07-19 22:00:37,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 22:00:37,682 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2022-07-19 22:00:37,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:37,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2022-07-19 22:00:37,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=102, Invalid=954, Unknown=0, NotChecked=0, Total=1056 [2022-07-19 22:00:37,683 INFO L87 Difference]: Start difference. First operand 242 states and 321 transitions. Second operand has 33 states, 31 states have (on average 5.580645161290323) internal successors, (173), 28 states have internal predecessors, (173), 11 states have call successors, (65), 9 states have call predecessors, (65), 9 states have return successors, (60), 9 states have call predecessors, (60), 10 states have call successors, (60) [2022-07-19 22:00:40,479 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:00:40,479 INFO L93 Difference]: Finished difference Result 535 states and 759 transitions. [2022-07-19 22:00:40,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-19 22:00:40,479 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 31 states have (on average 5.580645161290323) internal successors, (173), 28 states have internal predecessors, (173), 11 states have call successors, (65), 9 states have call predecessors, (65), 9 states have return successors, (60), 9 states have call predecessors, (60), 10 states have call successors, (60) Word has length 228 [2022-07-19 22:00:40,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:00:40,481 INFO L225 Difference]: With dead ends: 535 [2022-07-19 22:00:40,482 INFO L226 Difference]: Without dead ends: 363 [2022-07-19 22:00:40,483 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 561 GetRequests, 497 SyntacticMatches, 7 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 796 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=309, Invalid=3113, Unknown=0, NotChecked=0, Total=3422 [2022-07-19 22:00:40,484 INFO L413 NwaCegarLoop]: 251 mSDtfsCounter, 249 mSDsluCounter, 1451 mSDsCounter, 0 mSdLazyCounter, 3668 mSolverCounterSat, 162 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 1702 SdHoareTripleChecker+Invalid, 4810 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 162 IncrementalHoareTripleChecker+Valid, 3668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 980 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:00:40,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 1702 Invalid, 4810 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [162 Valid, 3668 Invalid, 0 Unknown, 980 Unchecked, 2.1s Time] [2022-07-19 22:00:40,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 363 states. [2022-07-19 22:00:40,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 363 to 305. [2022-07-19 22:00:40,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 197 states have (on average 1.1522842639593909) internal successors, (227), 201 states have internal predecessors, (227), 81 states have call successors, (81), 23 states have call predecessors, (81), 26 states have return successors, (117), 81 states have call predecessors, (117), 80 states have call successors, (117) [2022-07-19 22:00:40,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 425 transitions. [2022-07-19 22:00:40,499 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 425 transitions. Word has length 228 [2022-07-19 22:00:40,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:00:40,500 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 425 transitions. [2022-07-19 22:00:40,500 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 31 states have (on average 5.580645161290323) internal successors, (173), 28 states have internal predecessors, (173), 11 states have call successors, (65), 9 states have call predecessors, (65), 9 states have return successors, (60), 9 states have call predecessors, (60), 10 states have call successors, (60) [2022-07-19 22:00:40,500 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 425 transitions. [2022-07-19 22:00:40,501 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 233 [2022-07-19 22:00:40,501 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:00:40,501 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:00:40,523 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-19 22:00:40,711 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-19 22:00:40,711 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:00:40,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:00:40,712 INFO L85 PathProgramCache]: Analyzing trace with hash -1164886158, now seen corresponding path program 4 times [2022-07-19 22:00:40,712 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:00:40,712 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416031722] [2022-07-19 22:00:40,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:40,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:40,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:40,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:00:40,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:40,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:40,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:40,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:00:40,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:40,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 22:00:40,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:40,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:00:40,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:40,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 22:00:40,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:40,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 22:00:40,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:40,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:40,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:40,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:40,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:40,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:40,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:40,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:00:40,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:40,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:00:40,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:40,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:00:40,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:40,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 22:00:40,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:40,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 22:00:40,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:40,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:40,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:40,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:40,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:40,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:40,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:40,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 22:00:40,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:40,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-19 22:00:40,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:40,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 22:00:40,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:40,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-19 22:00:40,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:40,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-19 22:00:41,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:41,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-19 22:00:41,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:41,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-19 22:00:41,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:41,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 178 [2022-07-19 22:00:41,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:41,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-19 22:00:41,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:41,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 198 [2022-07-19 22:00:41,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:41,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-19 22:00:41,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:41,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-07-19 22:00:41,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:41,074 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 35 proven. 15 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2022-07-19 22:00:41,074 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:41,074 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416031722] [2022-07-19 22:00:41,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416031722] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:00:41,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [741161374] [2022-07-19 22:00:41,075 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2022-07-19 22:00:41,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:41,075 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:00:41,076 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:00:41,077 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-19 22:00:41,629 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2022-07-19 22:00:41,629 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:00:41,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 3151 conjuncts, 24 conjunts are in the unsatisfiable core [2022-07-19 22:00:41,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:00:41,683 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 199 proven. 0 refuted. 0 times theorem prover too weak. 213 trivial. 0 not checked. [2022-07-19 22:00:41,683 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:00:41,683 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [741161374] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:00:41,683 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:00:41,683 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12] total 13 [2022-07-19 22:00:41,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591063905] [2022-07-19 22:00:41,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:00:41,684 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 22:00:41,684 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:41,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 22:00:41,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-19 22:00:41,685 INFO L87 Difference]: Start difference. First operand 305 states and 425 transitions. Second operand has 9 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-07-19 22:00:41,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:00:41,834 INFO L93 Difference]: Finished difference Result 521 states and 725 transitions. [2022-07-19 22:00:41,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 22:00:41,835 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) Word has length 232 [2022-07-19 22:00:41,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:00:41,837 INFO L225 Difference]: With dead ends: 521 [2022-07-19 22:00:41,837 INFO L226 Difference]: Without dead ends: 310 [2022-07-19 22:00:41,838 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 288 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2022-07-19 22:00:41,838 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 12 mSDsluCounter, 1544 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1774 SdHoareTripleChecker+Invalid, 196 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:00:41,838 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1774 Invalid, 196 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 22:00:41,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 310 states. [2022-07-19 22:00:41,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 310 to 305. [2022-07-19 22:00:41,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 305 states, 197 states have (on average 1.1522842639593909) internal successors, (227), 201 states have internal predecessors, (227), 81 states have call successors, (81), 23 states have call predecessors, (81), 26 states have return successors, (114), 81 states have call predecessors, (114), 80 states have call successors, (114) [2022-07-19 22:00:41,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 422 transitions. [2022-07-19 22:00:41,855 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 422 transitions. Word has length 232 [2022-07-19 22:00:41,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:00:41,855 INFO L495 AbstractCegarLoop]: Abstraction has 305 states and 422 transitions. [2022-07-19 22:00:41,855 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 11.25) internal successors, (90), 8 states have internal predecessors, (90), 3 states have call successors, (29), 2 states have call predecessors, (29), 4 states have return successors, (27), 3 states have call predecessors, (27), 3 states have call successors, (27) [2022-07-19 22:00:41,855 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 422 transitions. [2022-07-19 22:00:41,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-07-19 22:00:41,857 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:00:41,857 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:00:41,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-19 22:00:42,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-19 22:00:42,068 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:00:42,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:00:42,068 INFO L85 PathProgramCache]: Analyzing trace with hash -233712675, now seen corresponding path program 3 times [2022-07-19 22:00:42,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:00:42,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800714999] [2022-07-19 22:00:42,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:42,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:42,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:00:42,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:42,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:42,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:42,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:00:42,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:42,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 22:00:42,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:42,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:00:42,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:42,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 22:00:42,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:42,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 22:00:42,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:42,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:42,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:42,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:42,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:42,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:42,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:42,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:00:42,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:42,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:00:42,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:42,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:00:42,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:42,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 22:00:42,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:42,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 22:00:42,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:42,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:42,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:42,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:00:42,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:42,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:42,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:42,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 22:00:42,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:42,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-19 22:00:42,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:42,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 22:00:42,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:42,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-19 22:00:42,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:42,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-19 22:00:42,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:42,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-19 22:00:42,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:42,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-19 22:00:42,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:42,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-19 22:00:42,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:42,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-19 22:00:42,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:42,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2022-07-19 22:00:42,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:42,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-19 22:00:42,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:42,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 214 [2022-07-19 22:00:42,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:42,599 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 92 proven. 8 refuted. 0 times theorem prover too weak. 316 trivial. 0 not checked. [2022-07-19 22:00:42,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:42,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800714999] [2022-07-19 22:00:42,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800714999] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:00:42,600 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1202153255] [2022-07-19 22:00:42,600 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 22:00:42,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:42,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:00:42,617 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:00:42,618 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-19 22:00:43,487 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-19 22:00:43,488 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:00:43,497 INFO L263 TraceCheckSpWp]: Trace formula consists of 2572 conjuncts, 28 conjunts are in the unsatisfiable core [2022-07-19 22:00:43,500 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:00:55,934 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 163 proven. 8 refuted. 0 times theorem prover too weak. 245 trivial. 0 not checked. [2022-07-19 22:00:55,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:00:56,157 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-19 22:00:56,158 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 22:00:56,231 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 92 proven. 10 refuted. 0 times theorem prover too weak. 314 trivial. 0 not checked. [2022-07-19 22:00:56,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1202153255] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:00:56,232 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 22:00:56,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 11, 9] total 25 [2022-07-19 22:00:56,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1315950555] [2022-07-19 22:00:56,232 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 22:00:56,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-19 22:00:56,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:56,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-19 22:00:56,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=514, Unknown=2, NotChecked=0, Total=600 [2022-07-19 22:00:56,235 INFO L87 Difference]: Start difference. First operand 305 states and 422 transitions. Second operand has 25 states, 25 states have (on average 5.28) internal successors, (132), 22 states have internal predecessors, (132), 4 states have call successors, (40), 6 states have call predecessors, (40), 7 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-19 22:01:04,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:01:04,829 INFO L93 Difference]: Finished difference Result 529 states and 735 transitions. [2022-07-19 22:01:04,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2022-07-19 22:01:04,830 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 5.28) internal successors, (132), 22 states have internal predecessors, (132), 4 states have call successors, (40), 6 states have call predecessors, (40), 7 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) Word has length 234 [2022-07-19 22:01:04,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:01:04,832 INFO L225 Difference]: With dead ends: 529 [2022-07-19 22:01:04,832 INFO L226 Difference]: Without dead ends: 400 [2022-07-19 22:01:04,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 568 GetRequests, 513 SyntacticMatches, 7 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 556 ImplicationChecksByTransitivity, 19.3s TimeCoverageRelationStatistics Valid=417, Invalid=2028, Unknown=5, NotChecked=0, Total=2450 [2022-07-19 22:01:04,833 INFO L413 NwaCegarLoop]: 215 mSDtfsCounter, 596 mSDsluCounter, 725 mSDsCounter, 0 mSdLazyCounter, 2415 mSolverCounterSat, 325 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 627 SdHoareTripleChecker+Valid, 940 SdHoareTripleChecker+Invalid, 3326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 325 IncrementalHoareTripleChecker+Valid, 2415 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 586 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-07-19 22:01:04,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [627 Valid, 940 Invalid, 3326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [325 Valid, 2415 Invalid, 0 Unknown, 586 Unchecked, 1.6s Time] [2022-07-19 22:01:04,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 400 states. [2022-07-19 22:01:04,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 400 to 339. [2022-07-19 22:01:04,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 339 states, 220 states have (on average 1.15) internal successors, (253), 223 states have internal predecessors, (253), 90 states have call successors, (90), 26 states have call predecessors, (90), 28 states have return successors, (139), 90 states have call predecessors, (139), 89 states have call successors, (139) [2022-07-19 22:01:04,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 339 states to 339 states and 482 transitions. [2022-07-19 22:01:04,851 INFO L78 Accepts]: Start accepts. Automaton has 339 states and 482 transitions. Word has length 234 [2022-07-19 22:01:04,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:01:04,851 INFO L495 AbstractCegarLoop]: Abstraction has 339 states and 482 transitions. [2022-07-19 22:01:04,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 5.28) internal successors, (132), 22 states have internal predecessors, (132), 4 states have call successors, (40), 6 states have call predecessors, (40), 7 states have return successors, (34), 4 states have call predecessors, (34), 3 states have call successors, (34) [2022-07-19 22:01:04,851 INFO L276 IsEmpty]: Start isEmpty. Operand 339 states and 482 transitions. [2022-07-19 22:01:04,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-07-19 22:01:04,853 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:01:04,853 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:01:04,875 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-19 22:01:05,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:01:05,075 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:01:05,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:01:05,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1271462305, now seen corresponding path program 1 times [2022-07-19 22:01:05,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:01:05,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169525852] [2022-07-19 22:01:05,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:01:05,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:01:05,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:05,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:01:05,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:05,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:01:05,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:05,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:01:05,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:05,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 22:01:05,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:05,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:01:05,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:05,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 22:01:05,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:05,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 22:01:05,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:05,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:01:05,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:05,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:01:05,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:05,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:01:05,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:05,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:01:05,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:05,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:01:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:05,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:01:05,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:05,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 22:01:05,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:05,440 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 22:01:05,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:05,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:01:05,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:05,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:01:05,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:05,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:01:05,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:05,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 22:01:05,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:05,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-19 22:01:05,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:05,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 22:01:05,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:05,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-19 22:01:05,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:05,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:01:05,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:05,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:01:05,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:05,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-19 22:01:05,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:05,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-07-19 22:01:05,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:05,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-19 22:01:05,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:05,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-19 22:01:05,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:05,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-07-19 22:01:05,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:05,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-07-19 22:01:05,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:05,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-07-19 22:01:05,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:05,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-07-19 22:01:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:05,717 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 58 proven. 42 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-07-19 22:01:05,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:01:05,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169525852] [2022-07-19 22:01:05,718 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169525852] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:01:05,718 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [60451167] [2022-07-19 22:01:05,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:01:05,718 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:01:05,718 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:01:05,719 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:01:05,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-19 22:01:06,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:06,269 INFO L263 TraceCheckSpWp]: Trace formula consists of 3202 conjuncts, 27 conjunts are in the unsatisfiable core [2022-07-19 22:01:06,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:01:06,488 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2022-07-19 22:01:06,561 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 252 proven. 8 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-07-19 22:01:06,562 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:01:06,815 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 30 treesize of output 18 [2022-07-19 22:01:06,871 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-19 22:01:06,871 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2022-07-19 22:01:06,940 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 16 proven. 52 refuted. 0 times theorem prover too weak. 396 trivial. 0 not checked. [2022-07-19 22:01:06,940 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [60451167] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:01:06,940 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 22:01:06,940 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 12, 10] total 28 [2022-07-19 22:01:06,940 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615442556] [2022-07-19 22:01:06,940 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 22:01:06,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-07-19 22:01:06,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:01:06,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-07-19 22:01:06,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=681, Unknown=0, NotChecked=0, Total=756 [2022-07-19 22:01:06,941 INFO L87 Difference]: Start difference. First operand 339 states and 482 transitions. Second operand has 28 states, 26 states have (on average 5.846153846153846) internal successors, (152), 24 states have internal predecessors, (152), 9 states have call successors, (66), 9 states have call predecessors, (66), 8 states have return successors, (61), 7 states have call predecessors, (61), 9 states have call successors, (61) [2022-07-19 22:01:10,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:01:10,397 INFO L93 Difference]: Finished difference Result 763 states and 1188 transitions. [2022-07-19 22:01:10,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-19 22:01:10,397 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 26 states have (on average 5.846153846153846) internal successors, (152), 24 states have internal predecessors, (152), 9 states have call successors, (66), 9 states have call predecessors, (66), 8 states have return successors, (61), 7 states have call predecessors, (61), 9 states have call successors, (61) Word has length 243 [2022-07-19 22:01:10,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:01:10,400 INFO L225 Difference]: With dead ends: 763 [2022-07-19 22:01:10,400 INFO L226 Difference]: Without dead ends: 513 [2022-07-19 22:01:10,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 534 SyntacticMatches, 4 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 481 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=279, Invalid=2271, Unknown=0, NotChecked=0, Total=2550 [2022-07-19 22:01:10,402 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 322 mSDsluCounter, 911 mSDsCounter, 0 mSdLazyCounter, 4797 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 387 SdHoareTripleChecker+Valid, 1139 SdHoareTripleChecker+Invalid, 5718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 4797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 702 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-19 22:01:10,402 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [387 Valid, 1139 Invalid, 5718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 4797 Invalid, 0 Unknown, 702 Unchecked, 2.8s Time] [2022-07-19 22:01:10,403 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 513 states. [2022-07-19 22:01:10,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 513 to 434. [2022-07-19 22:01:10,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 434 states, 276 states have (on average 1.1702898550724639) internal successors, (323), 279 states have internal predecessors, (323), 125 states have call successors, (125), 30 states have call predecessors, (125), 32 states have return successors, (211), 125 states have call predecessors, (211), 124 states have call successors, (211) [2022-07-19 22:01:10,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 434 states to 434 states and 659 transitions. [2022-07-19 22:01:10,427 INFO L78 Accepts]: Start accepts. Automaton has 434 states and 659 transitions. Word has length 243 [2022-07-19 22:01:10,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:01:10,427 INFO L495 AbstractCegarLoop]: Abstraction has 434 states and 659 transitions. [2022-07-19 22:01:10,427 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 26 states have (on average 5.846153846153846) internal successors, (152), 24 states have internal predecessors, (152), 9 states have call successors, (66), 9 states have call predecessors, (66), 8 states have return successors, (61), 7 states have call predecessors, (61), 9 states have call successors, (61) [2022-07-19 22:01:10,427 INFO L276 IsEmpty]: Start isEmpty. Operand 434 states and 659 transitions. [2022-07-19 22:01:10,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2022-07-19 22:01:10,430 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:01:10,430 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:01:10,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2022-07-19 22:01:10,634 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:01:10,635 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:01:10,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:01:10,635 INFO L85 PathProgramCache]: Analyzing trace with hash -925659295, now seen corresponding path program 1 times [2022-07-19 22:01:10,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:01:10,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393979220] [2022-07-19 22:01:10,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:01:10,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:01:10,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:10,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:01:10,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:11,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:01:11,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:11,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:01:11,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:11,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 22:01:11,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:11,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:01:11,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:11,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 22:01:11,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:11,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 22:01:11,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:11,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:01:11,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:11,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:01:11,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:11,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:01:11,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:11,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:01:11,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:11,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:01:11,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:11,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:01:11,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:11,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 22:01:11,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:11,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 22:01:11,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:11,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:01:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:11,064 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:01:11,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:11,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:01:11,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:11,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 22:01:11,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:11,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-19 22:01:11,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:11,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 22:01:11,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:11,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-19 22:01:11,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:11,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:01:11,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:11,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:01:11,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:11,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-19 22:01:11,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:11,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-07-19 22:01:11,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:11,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-19 22:01:11,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:11,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 185 [2022-07-19 22:01:11,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:11,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 193 [2022-07-19 22:01:11,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:11,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 209 [2022-07-19 22:01:11,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:11,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-07-19 22:01:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:11,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-07-19 22:01:11,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:11,268 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 58 proven. 42 refuted. 0 times theorem prover too weak. 364 trivial. 0 not checked. [2022-07-19 22:01:11,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:01:11,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393979220] [2022-07-19 22:01:11,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1393979220] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:01:11,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1412621323] [2022-07-19 22:01:11,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:01:11,268 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:01:11,269 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:01:11,270 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:01:11,275 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-19 22:01:11,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:11,826 INFO L263 TraceCheckSpWp]: Trace formula consists of 3209 conjuncts, 100 conjunts are in the unsatisfiable core [2022-07-19 22:01:11,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:01:11,950 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 22:01:11,952 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 22:01:17,202 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 22:01:17,204 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 22:01:17,218 WARN L855 $PredicateComparison]: unable to prove that (exists ((save_byte_from_array_~storage.base Int) (v_ArrVal_4159 Int) (v_ArrVal_4155 Int) (v_ArrVal_4160 (Array Int Int))) (and (= (store |c_old(#memory_int)| save_byte_from_array_~storage.base (store (store (select |c_old(#memory_int)| save_byte_from_array_~storage.base) |c_save_byte_from_array_#in~storage.offset| v_ArrVal_4155) (+ |c_save_byte_from_array_#in~storage.offset| 8) v_ArrVal_4159)) |c_#memory_int|) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| save_byte_from_array_~storage.base v_ArrVal_4160)))) is different from true [2022-07-19 22:01:17,231 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:01:17,232 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:01:17,233 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 30 [2022-07-19 22:01:17,244 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:01:17,245 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-07-19 22:01:17,249 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-07-19 22:01:17,283 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:01:17,284 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:01:17,285 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:01:17,285 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 32 [2022-07-19 22:01:17,289 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:01:17,290 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 22 treesize of output 23 [2022-07-19 22:01:17,292 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 13 treesize of output 9 [2022-07-19 22:01:17,295 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 24 treesize of output 16 [2022-07-19 22:01:23,960 INFO L134 CoverageAnalysis]: Checked inductivity of 464 backedges. 303 proven. 30 refuted. 0 times theorem prover too weak. 129 trivial. 2 not checked. [2022-07-19 22:01:23,960 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:01:24,497 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_save_byte_from_array_~storage.base_54 Int) (v_ArrVal_4178 Int) (v_ArrVal_4179 Int) (v_ArrVal_4180 (Array Int Int))) (or (not (= (select (select (store |c_#memory_$Pointer$.base| v_save_byte_from_array_~storage.base_54 v_ArrVal_4180) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.offset| 8)) 0)) (not (= 0 (mod (select (select (store |c_#memory_int| v_save_byte_from_array_~storage.base_54 (store (store (select |c_#memory_int| v_save_byte_from_array_~storage.base_54) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#old_byte_from_src~0#1.offset| v_ArrVal_4178) (+ |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#old_byte_from_src~0#1.offset| 8) v_ArrVal_4179)) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|) (+ 16 |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.offset|)) 18446744073709551616))))) is different from false [2022-07-19 22:01:24,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1412621323] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:01:24,499 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 22:01:24,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 29] total 42 [2022-07-19 22:01:24,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696640093] [2022-07-19 22:01:24,500 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 22:01:24,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-07-19 22:01:24,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:01:24,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-07-19 22:01:24,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=177, Invalid=2177, Unknown=6, NotChecked=190, Total=2550 [2022-07-19 22:01:24,501 INFO L87 Difference]: Start difference. First operand 434 states and 659 transitions. Second operand has 42 states, 38 states have (on average 4.7368421052631575) internal successors, (180), 34 states have internal predecessors, (180), 13 states have call successors, (59), 10 states have call predecessors, (59), 12 states have return successors, (55), 12 states have call predecessors, (55), 13 states have call successors, (55) [2022-07-19 22:01:35,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:01:35,825 INFO L93 Difference]: Finished difference Result 898 states and 1345 transitions. [2022-07-19 22:01:35,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-07-19 22:01:35,826 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 38 states have (on average 4.7368421052631575) internal successors, (180), 34 states have internal predecessors, (180), 13 states have call successors, (59), 10 states have call predecessors, (59), 12 states have return successors, (55), 12 states have call predecessors, (55), 13 states have call successors, (55) Word has length 243 [2022-07-19 22:01:35,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:01:35,829 INFO L225 Difference]: With dead ends: 898 [2022-07-19 22:01:35,829 INFO L226 Difference]: Without dead ends: 674 [2022-07-19 22:01:35,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 464 GetRequests, 363 SyntacticMatches, 6 SemanticMatches, 95 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2358 ImplicationChecksByTransitivity, 20.9s TimeCoverageRelationStatistics Valid=807, Invalid=8120, Unknown=11, NotChecked=374, Total=9312 [2022-07-19 22:01:35,832 INFO L413 NwaCegarLoop]: 211 mSDtfsCounter, 400 mSDsluCounter, 838 mSDsCounter, 0 mSdLazyCounter, 4356 mSolverCounterSat, 285 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 1049 SdHoareTripleChecker+Invalid, 6596 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 285 IncrementalHoareTripleChecker+Valid, 4356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1955 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-19 22:01:35,832 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 1049 Invalid, 6596 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [285 Valid, 4356 Invalid, 0 Unknown, 1955 Unchecked, 2.5s Time] [2022-07-19 22:01:35,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states. [2022-07-19 22:01:35,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 578. [2022-07-19 22:01:35,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 376 states have (on average 1.1702127659574468) internal successors, (440), 382 states have internal predecessors, (440), 157 states have call successors, (157), 39 states have call predecessors, (157), 44 states have return successors, (271), 157 states have call predecessors, (271), 156 states have call successors, (271) [2022-07-19 22:01:35,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 868 transitions. [2022-07-19 22:01:35,871 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 868 transitions. Word has length 243 [2022-07-19 22:01:35,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:01:35,871 INFO L495 AbstractCegarLoop]: Abstraction has 578 states and 868 transitions. [2022-07-19 22:01:35,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 38 states have (on average 4.7368421052631575) internal successors, (180), 34 states have internal predecessors, (180), 13 states have call successors, (59), 10 states have call predecessors, (59), 12 states have return successors, (55), 12 states have call predecessors, (55), 13 states have call successors, (55) [2022-07-19 22:01:35,872 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 868 transitions. [2022-07-19 22:01:35,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-07-19 22:01:35,875 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:01:35,875 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:01:35,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-19 22:01:36,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:01:36,091 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:01:36,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:01:36,092 INFO L85 PathProgramCache]: Analyzing trace with hash -971289891, now seen corresponding path program 5 times [2022-07-19 22:01:36,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:01:36,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021477906] [2022-07-19 22:01:36,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:01:36,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:01:36,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:36,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:01:36,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:36,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:01:36,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:36,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:01:36,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:36,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 22:01:36,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:36,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:01:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:36,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 22:01:36,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:36,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 22:01:36,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:36,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:01:36,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:36,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:01:36,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:36,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:01:36,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:36,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:01:36,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:36,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:01:36,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:36,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:01:36,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:36,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 22:01:36,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:36,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 22:01:36,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:36,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:01:36,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:36,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:01:36,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:36,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:01:36,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:36,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 22:01:36,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:36,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-19 22:01:36,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:36,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 22:01:36,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:36,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-19 22:01:36,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:36,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-19 22:01:36,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:36,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-19 22:01:36,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:36,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-19 22:01:36,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:36,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-19 22:01:36,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:36,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-19 22:01:36,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:36,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 204 [2022-07-19 22:01:36,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:36,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2022-07-19 22:01:36,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:36,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 218 [2022-07-19 22:01:36,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:36,449 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 43 proven. 8 refuted. 0 times theorem prover too weak. 381 trivial. 0 not checked. [2022-07-19 22:01:36,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:01:36,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021477906] [2022-07-19 22:01:36,449 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021477906] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:01:36,449 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1177667213] [2022-07-19 22:01:36,449 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2022-07-19 22:01:36,449 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:01:36,450 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:01:36,450 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:01:36,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-19 22:01:36,965 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 5 check-sat command(s) [2022-07-19 22:01:36,965 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:01:36,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 780 conjuncts, 43 conjunts are in the unsatisfiable core [2022-07-19 22:01:36,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:01:36,985 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 22:01:37,662 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 289 proven. 14 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2022-07-19 22:01:37,662 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:01:38,005 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-19 22:01:38,007 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2022-07-19 22:01:38,093 INFO L134 CoverageAnalysis]: Checked inductivity of 432 backedges. 62 proven. 44 refuted. 0 times theorem prover too weak. 326 trivial. 0 not checked. [2022-07-19 22:01:38,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1177667213] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:01:38,094 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 22:01:38,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14, 13] total 31 [2022-07-19 22:01:38,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45813345] [2022-07-19 22:01:38,094 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 22:01:38,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2022-07-19 22:01:38,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:01:38,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2022-07-19 22:01:38,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=836, Unknown=0, NotChecked=0, Total=930 [2022-07-19 22:01:38,095 INFO L87 Difference]: Start difference. First operand 578 states and 868 transitions. Second operand has 31 states, 29 states have (on average 5.448275862068965) internal successors, (158), 26 states have internal predecessors, (158), 5 states have call successors, (47), 7 states have call predecessors, (47), 8 states have return successors, (40), 4 states have call predecessors, (40), 5 states have call successors, (40) [2022-07-19 22:01:41,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:01:41,590 INFO L93 Difference]: Finished difference Result 1056 states and 1567 transitions. [2022-07-19 22:01:41,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-07-19 22:01:41,592 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 29 states have (on average 5.448275862068965) internal successors, (158), 26 states have internal predecessors, (158), 5 states have call successors, (47), 7 states have call predecessors, (47), 8 states have return successors, (40), 4 states have call predecessors, (40), 5 states have call successors, (40) Word has length 238 [2022-07-19 22:01:41,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:01:41,595 INFO L225 Difference]: With dead ends: 1056 [2022-07-19 22:01:41,595 INFO L226 Difference]: Without dead ends: 704 [2022-07-19 22:01:41,597 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 587 GetRequests, 512 SyntacticMatches, 7 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 893 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=709, Invalid=4121, Unknown=0, NotChecked=0, Total=4830 [2022-07-19 22:01:41,598 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 263 mSDsluCounter, 1337 mSDsCounter, 0 mSdLazyCounter, 4004 mSolverCounterSat, 122 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 316 SdHoareTripleChecker+Valid, 1563 SdHoareTripleChecker+Invalid, 4805 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 122 IncrementalHoareTripleChecker+Valid, 4004 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 679 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:01:41,598 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [316 Valid, 1563 Invalid, 4805 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [122 Valid, 4004 Invalid, 0 Unknown, 679 Unchecked, 2.0s Time] [2022-07-19 22:01:41,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 704 states. [2022-07-19 22:01:41,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 704 to 597. [2022-07-19 22:01:41,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 597 states, 391 states have (on average 1.1611253196930946) internal successors, (454), 399 states have internal predecessors, (454), 158 states have call successors, (158), 40 states have call predecessors, (158), 47 states have return successors, (253), 158 states have call predecessors, (253), 157 states have call successors, (253) [2022-07-19 22:01:41,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 597 states to 597 states and 865 transitions. [2022-07-19 22:01:41,631 INFO L78 Accepts]: Start accepts. Automaton has 597 states and 865 transitions. Word has length 238 [2022-07-19 22:01:41,632 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:01:41,632 INFO L495 AbstractCegarLoop]: Abstraction has 597 states and 865 transitions. [2022-07-19 22:01:41,633 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 29 states have (on average 5.448275862068965) internal successors, (158), 26 states have internal predecessors, (158), 5 states have call successors, (47), 7 states have call predecessors, (47), 8 states have return successors, (40), 4 states have call predecessors, (40), 5 states have call successors, (40) [2022-07-19 22:01:41,633 INFO L276 IsEmpty]: Start isEmpty. Operand 597 states and 865 transitions. [2022-07-19 22:01:41,636 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2022-07-19 22:01:41,636 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:01:41,636 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:01:41,660 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Ended with exit code 0 [2022-07-19 22:01:41,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2022-07-19 22:01:41,851 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:01:41,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:01:41,852 INFO L85 PathProgramCache]: Analyzing trace with hash -320689605, now seen corresponding path program 1 times [2022-07-19 22:01:41,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:01:41,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438882355] [2022-07-19 22:01:41,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:01:41,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:01:41,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:41,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:01:41,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:41,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:01:41,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:41,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:01:41,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:41,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 22:01:41,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:41,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:01:41,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:41,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 22:01:41,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:41,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 22:01:41,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:41,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:01:41,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:41,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:01:41,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:41,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:01:41,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:42,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:01:42,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:42,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:01:42,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:42,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:01:42,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:42,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 22:01:42,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:42,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 22:01:42,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:42,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:01:42,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:42,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:01:42,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:42,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:01:42,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:42,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 22:01:42,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:42,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-19 22:01:42,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:42,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 22:01:42,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:42,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-19 22:01:42,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:42,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-19 22:01:42,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:42,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-19 22:01:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:42,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-19 22:01:42,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:42,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-19 22:01:42,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:42,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 186 [2022-07-19 22:01:42,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:42,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:01:42,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:42,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:01:42,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:42,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 22:01:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:42,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:01:42,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:42,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 22:01:42,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:42,094 INFO L134 CoverageAnalysis]: Checked inductivity of 406 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 404 trivial. 0 not checked. [2022-07-19 22:01:42,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:01:42,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438882355] [2022-07-19 22:01:42,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438882355] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:01:42,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:01:42,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 22:01:42,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568685706] [2022-07-19 22:01:42,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:01:42,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 22:01:42,095 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:01:42,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 22:01:42,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-19 22:01:42,096 INFO L87 Difference]: Start difference. First operand 597 states and 865 transitions. Second operand has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2022-07-19 22:01:42,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:01:42,709 INFO L93 Difference]: Finished difference Result 724 states and 1035 transitions. [2022-07-19 22:01:42,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 22:01:42,710 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) Word has length 241 [2022-07-19 22:01:42,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:01:42,720 INFO L225 Difference]: With dead ends: 724 [2022-07-19 22:01:42,720 INFO L226 Difference]: Without dead ends: 617 [2022-07-19 22:01:42,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-19 22:01:42,721 INFO L413 NwaCegarLoop]: 198 mSDtfsCounter, 98 mSDsluCounter, 358 mSDsCounter, 0 mSdLazyCounter, 932 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 556 SdHoareTripleChecker+Invalid, 1008 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 932 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-19 22:01:42,721 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 556 Invalid, 1008 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 932 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-19 22:01:42,722 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 617 states. [2022-07-19 22:01:42,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 617 to 600. [2022-07-19 22:01:42,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 394 states have (on average 1.1598984771573604) internal successors, (457), 401 states have internal predecessors, (457), 158 states have call successors, (158), 40 states have call predecessors, (158), 47 states have return successors, (253), 159 states have call predecessors, (253), 157 states have call successors, (253) [2022-07-19 22:01:42,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 868 transitions. [2022-07-19 22:01:42,753 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 868 transitions. Word has length 241 [2022-07-19 22:01:42,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:01:42,753 INFO L495 AbstractCegarLoop]: Abstraction has 600 states and 868 transitions. [2022-07-19 22:01:42,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.666666666666667) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (30), 5 states have call predecessors, (30), 2 states have return successors, (29), 2 states have call predecessors, (29), 1 states have call successors, (29) [2022-07-19 22:01:42,753 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 868 transitions. [2022-07-19 22:01:42,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-07-19 22:01:42,756 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:01:42,756 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:01:42,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 22:01:42,757 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:01:42,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:01:42,757 INFO L85 PathProgramCache]: Analyzing trace with hash -1129747448, now seen corresponding path program 6 times [2022-07-19 22:01:42,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:01:42,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1110890573] [2022-07-19 22:01:42,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:01:42,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:01:42,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:43,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:01:43,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:43,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:01:43,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:43,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:01:43,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:43,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 22:01:43,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:43,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:01:43,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:43,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 22:01:43,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:43,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 22:01:43,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:43,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:01:43,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:43,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:01:43,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:43,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:01:43,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:43,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:01:43,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:43,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:01:43,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:43,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:01:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:43,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 22:01:43,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:43,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 22:01:43,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:43,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:01:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:43,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:01:43,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:43,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:01:43,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:43,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 22:01:43,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:43,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-19 22:01:43,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:43,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 22:01:43,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:43,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-19 22:01:43,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:43,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-19 22:01:43,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:43,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-19 22:01:43,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:43,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-19 22:01:43,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:43,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-19 22:01:43,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:43,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-19 22:01:43,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:43,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-19 22:01:43,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:43,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-07-19 22:01:43,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:43,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-19 22:01:43,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:43,357 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 52 proven. 54 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2022-07-19 22:01:43,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:01:43,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1110890573] [2022-07-19 22:01:43,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1110890573] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:01:43,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679010816] [2022-07-19 22:01:43,358 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2022-07-19 22:01:43,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:01:43,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:01:43,359 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:01:43,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-19 22:01:44,016 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 5 check-sat command(s) [2022-07-19 22:01:44,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:01:44,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 2960 conjuncts, 155 conjunts are in the unsatisfiable core [2022-07-19 22:01:44,033 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:01:44,738 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 59 treesize of output 47 [2022-07-19 22:01:44,743 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 53 treesize of output 41 [2022-07-19 22:01:44,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:01:44,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:01:44,750 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:01:44,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:01:44,751 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:01:44,752 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:01:44,926 INFO L356 Elim1Store]: treesize reduction 308, result has 19.2 percent of original size [2022-07-19 22:01:44,926 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 6 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 126 [2022-07-19 22:01:44,933 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:01:44,934 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:01:44,935 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:01:44,936 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 28 [2022-07-19 22:01:44,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:01:44,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:01:44,943 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:01:44,944 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 28 [2022-07-19 22:01:46,980 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 33 treesize of output 25 [2022-07-19 22:01:46,983 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 21 [2022-07-19 22:01:48,160 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 111 proven. 244 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-07-19 22:01:48,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:01:56,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679010816] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:01:56,547 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 22:01:56,547 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 33] total 47 [2022-07-19 22:01:56,547 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1988561196] [2022-07-19 22:01:56,547 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 22:01:56,547 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-07-19 22:01:56,547 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:01:56,548 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-07-19 22:01:56,548 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=230, Invalid=3552, Unknown=0, NotChecked=0, Total=3782 [2022-07-19 22:01:56,549 INFO L87 Difference]: Start difference. First operand 600 states and 868 transitions. Second operand has 47 states, 42 states have (on average 5.309523809523809) internal successors, (223), 36 states have internal predecessors, (223), 15 states have call successors, (57), 14 states have call predecessors, (57), 12 states have return successors, (54), 12 states have call predecessors, (54), 13 states have call successors, (54) [2022-07-19 22:02:10,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:02:10,702 INFO L93 Difference]: Finished difference Result 1308 states and 1839 transitions. [2022-07-19 22:02:10,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2022-07-19 22:02:10,704 INFO L78 Accepts]: Start accepts. Automaton has has 47 states, 42 states have (on average 5.309523809523809) internal successors, (223), 36 states have internal predecessors, (223), 15 states have call successors, (57), 14 states have call predecessors, (57), 12 states have return successors, (54), 12 states have call predecessors, (54), 13 states have call successors, (54) Word has length 240 [2022-07-19 22:02:10,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:02:10,717 INFO L225 Difference]: With dead ends: 1308 [2022-07-19 22:02:10,717 INFO L226 Difference]: Without dead ends: 1026 [2022-07-19 22:02:10,721 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 484 GetRequests, 348 SyntacticMatches, 17 SemanticMatches, 119 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4618 ImplicationChecksByTransitivity, 19.5s TimeCoverageRelationStatistics Valid=1035, Invalid=13479, Unknown=6, NotChecked=0, Total=14520 [2022-07-19 22:02:10,722 INFO L413 NwaCegarLoop]: 305 mSDtfsCounter, 736 mSDsluCounter, 2165 mSDsCounter, 0 mSdLazyCounter, 6588 mSolverCounterSat, 672 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 2470 SdHoareTripleChecker+Invalid, 9231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 672 IncrementalHoareTripleChecker+Valid, 6588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1971 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-07-19 22:02:10,722 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 2470 Invalid, 9231 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [672 Valid, 6588 Invalid, 0 Unknown, 1971 Unchecked, 4.3s Time] [2022-07-19 22:02:10,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1026 states. [2022-07-19 22:02:10,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1026 to 958. [2022-07-19 22:02:10,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 958 states, 643 states have (on average 1.1477449455676516) internal successors, (738), 650 states have internal predecessors, (738), 241 states have call successors, (241), 66 states have call predecessors, (241), 73 states have return successors, (377), 243 states have call predecessors, (377), 239 states have call successors, (377) [2022-07-19 22:02:10,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 958 states to 958 states and 1356 transitions. [2022-07-19 22:02:10,777 INFO L78 Accepts]: Start accepts. Automaton has 958 states and 1356 transitions. Word has length 240 [2022-07-19 22:02:10,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:02:10,778 INFO L495 AbstractCegarLoop]: Abstraction has 958 states and 1356 transitions. [2022-07-19 22:02:10,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 47 states, 42 states have (on average 5.309523809523809) internal successors, (223), 36 states have internal predecessors, (223), 15 states have call successors, (57), 14 states have call predecessors, (57), 12 states have return successors, (54), 12 states have call predecessors, (54), 13 states have call successors, (54) [2022-07-19 22:02:10,778 INFO L276 IsEmpty]: Start isEmpty. Operand 958 states and 1356 transitions. [2022-07-19 22:02:10,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-07-19 22:02:10,782 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:02:10,782 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:02:10,806 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-07-19 22:02:10,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2022-07-19 22:02:10,995 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:02:10,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:02:10,996 INFO L85 PathProgramCache]: Analyzing trace with hash -910892730, now seen corresponding path program 1 times [2022-07-19 22:02:10,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:02:10,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330116295] [2022-07-19 22:02:10,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:02:10,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:02:11,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:11,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:02:11,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:11,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:02:11,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:11,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:02:11,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:11,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 22:02:11,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:11,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:02:11,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:11,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 22:02:11,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:11,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 22:02:11,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:11,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:11,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:11,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:02:11,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:11,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:11,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:11,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:02:11,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:11,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:02:11,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:11,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:02:11,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:11,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 22:02:11,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:11,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 22:02:11,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:11,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:11,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:11,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:02:11,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:11,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:11,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:11,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 22:02:11,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:11,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-19 22:02:11,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:11,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 22:02:11,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:11,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-19 22:02:11,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:11,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-19 22:02:11,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:11,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-19 22:02:11,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:11,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-19 22:02:11,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:11,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-19 22:02:11,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:11,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-19 22:02:11,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:11,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-19 22:02:11,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:11,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-07-19 22:02:11,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:11,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-19 22:02:11,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:11,539 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 52 proven. 54 refuted. 0 times theorem prover too weak. 332 trivial. 0 not checked. [2022-07-19 22:02:11,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:02:11,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330116295] [2022-07-19 22:02:11,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330116295] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:02:11,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1709088066] [2022-07-19 22:02:11,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:02:11,539 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:02:11,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:02:11,541 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:02:11,542 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-19 22:02:12,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:12,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 3170 conjuncts, 100 conjunts are in the unsatisfiable core [2022-07-19 22:02:12,125 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:02:12,128 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 22:02:12,237 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-19 22:02:12,238 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 22:02:12,353 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 22:02:14,777 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 22:02:16,822 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 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 11 treesize of output 14 [2022-07-19 22:02:16,827 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_arrayElimArr_1 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_ensure_byte_buf_has_allocated_buffer_member_#in~buf.base| v_arrayElimArr_1)) (not (= (select v_arrayElimArr_1 (+ 8 |c_ensure_byte_buf_has_allocated_buffer_member_#in~buf.offset|)) 0)))) is different from true [2022-07-19 22:02:16,835 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-07-19 22:02:29,080 INFO L356 Elim1Store]: treesize reduction 42, result has 31.1 percent of original size [2022-07-19 22:02:29,080 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 36 treesize of output 47 [2022-07-19 22:02:29,084 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 24 [2022-07-19 22:02:29,090 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2022-07-19 22:02:36,724 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 22:02:36,727 INFO L356 Elim1Store]: treesize reduction 64, result has 1.5 percent of original size [2022-07-19 22:02:36,727 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 2 disjoint index pairs (out of 15 index pairs), introduced 5 new quantified variables, introduced 11 case distinctions, treesize of input 53 treesize of output 1 [2022-07-19 22:02:36,729 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 310 proven. 20 refuted. 0 times theorem prover too weak. 106 trivial. 2 not checked. [2022-07-19 22:02:36,729 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:02:36,956 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 22:02:36,956 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 38 [2022-07-19 22:02:36,962 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_arrayElimArr_2 (Array Int Int)) (|v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_21| Int)) (or (not (= (select (select (store |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_~#src#1.base_21| v_arrayElimArr_2) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#buf~3#1.base|) (+ 8 |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#buf~3#1.offset|)) 0)) (not (= (select (select |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.offset| 8)) (select v_arrayElimArr_2 8))))) is different from false [2022-07-19 22:02:36,978 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1709088066] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:02:36,978 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 22:02:36,978 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 25] total 40 [2022-07-19 22:02:36,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188207953] [2022-07-19 22:02:36,978 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 22:02:36,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-07-19 22:02:36,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:02:36,979 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-07-19 22:02:36,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1736, Unknown=13, NotChecked=170, Total=2070 [2022-07-19 22:02:36,980 INFO L87 Difference]: Start difference. First operand 958 states and 1356 transitions. Second operand has 40 states, 35 states have (on average 5.485714285714286) internal successors, (192), 32 states have internal predecessors, (192), 16 states have call successors, (58), 10 states have call predecessors, (58), 11 states have return successors, (55), 13 states have call predecessors, (55), 15 states have call successors, (55) [2022-07-19 22:02:41,353 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_arrayElimArr_1 (Array Int Int))) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |c_ensure_byte_buf_has_allocated_buffer_member_#in~buf.base| v_arrayElimArr_1)) (not (= (select v_arrayElimArr_1 (+ 8 |c_ensure_byte_buf_has_allocated_buffer_member_#in~buf.offset|)) 0)))) (not (= (select (select |c_#memory_$Pointer$.base| |c_ensure_byte_buf_has_allocated_buffer_member_#in~buf.base|) (+ 8 |c_ensure_byte_buf_has_allocated_buffer_member_#in~buf.offset|)) 0))) is different from true [2022-07-19 22:02:54,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:02:54,536 INFO L93 Difference]: Finished difference Result 1732 states and 2447 transitions. [2022-07-19 22:02:54,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 57 states. [2022-07-19 22:02:54,537 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 35 states have (on average 5.485714285714286) internal successors, (192), 32 states have internal predecessors, (192), 16 states have call successors, (58), 10 states have call predecessors, (58), 11 states have return successors, (55), 13 states have call predecessors, (55), 15 states have call successors, (55) Word has length 240 [2022-07-19 22:02:54,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:02:54,542 INFO L225 Difference]: With dead ends: 1732 [2022-07-19 22:02:54,542 INFO L226 Difference]: Without dead ends: 1293 [2022-07-19 22:02:54,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 459 GetRequests, 364 SyntacticMatches, 15 SemanticMatches, 80 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 1729 ImplicationChecksByTransitivity, 38.2s TimeCoverageRelationStatistics Valid=469, Invalid=5674, Unknown=31, NotChecked=468, Total=6642 [2022-07-19 22:02:54,545 INFO L413 NwaCegarLoop]: 279 mSDtfsCounter, 366 mSDsluCounter, 2262 mSDsCounter, 0 mSdLazyCounter, 5588 mSolverCounterSat, 455 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 437 SdHoareTripleChecker+Valid, 2541 SdHoareTripleChecker+Invalid, 8117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 455 IncrementalHoareTripleChecker+Valid, 5588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2074 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-19 22:02:54,545 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [437 Valid, 2541 Invalid, 8117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [455 Valid, 5588 Invalid, 0 Unknown, 2074 Unchecked, 3.6s Time] [2022-07-19 22:02:54,546 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1293 states. [2022-07-19 22:02:54,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1293 to 1052. [2022-07-19 22:02:54,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1052 states, 728 states have (on average 1.1318681318681318) internal successors, (824), 741 states have internal predecessors, (824), 237 states have call successors, (237), 73 states have call predecessors, (237), 86 states have return successors, (385), 239 states have call predecessors, (385), 235 states have call successors, (385) [2022-07-19 22:02:54,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1446 transitions. [2022-07-19 22:02:54,634 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1446 transitions. Word has length 240 [2022-07-19 22:02:54,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:02:54,635 INFO L495 AbstractCegarLoop]: Abstraction has 1052 states and 1446 transitions. [2022-07-19 22:02:54,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 35 states have (on average 5.485714285714286) internal successors, (192), 32 states have internal predecessors, (192), 16 states have call successors, (58), 10 states have call predecessors, (58), 11 states have return successors, (55), 13 states have call predecessors, (55), 15 states have call successors, (55) [2022-07-19 22:02:54,635 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1446 transitions. [2022-07-19 22:02:54,638 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-07-19 22:02:54,638 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:02:54,638 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:02:54,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2022-07-19 22:02:54,851 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:02:54,851 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:02:54,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:02:54,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1857854068, now seen corresponding path program 1 times [2022-07-19 22:02:54,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:02:54,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1420356851] [2022-07-19 22:02:54,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:02:54,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:02:55,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:55,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:02:55,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:55,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:02:55,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:55,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:02:55,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:55,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 22:02:55,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:55,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:02:55,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:55,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 22:02:55,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:55,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 22:02:55,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:55,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:55,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:55,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:02:55,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:55,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:55,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:55,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:02:55,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:55,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:02:55,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:55,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:02:55,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:55,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 22:02:55,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:55,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 22:02:55,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:55,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:55,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:55,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:02:55,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:55,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:55,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:55,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 22:02:55,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:55,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-19 22:02:55,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:55,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 22:02:55,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:55,354 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-19 22:02:55,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:55,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-19 22:02:55,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:55,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-19 22:02:55,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:55,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-19 22:02:55,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:55,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-19 22:02:55,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:55,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-19 22:02:55,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:55,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-19 22:02:55,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:55,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-07-19 22:02:55,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:55,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-19 22:02:55,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:55,430 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 25 proven. 59 refuted. 0 times theorem prover too weak. 354 trivial. 0 not checked. [2022-07-19 22:02:55,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:02:55,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1420356851] [2022-07-19 22:02:55,430 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1420356851] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:02:55,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1657707853] [2022-07-19 22:02:55,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:02:55,431 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:02:55,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:02:55,432 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:02:55,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-19 22:02:55,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:56,003 INFO L263 TraceCheckSpWp]: Trace formula consists of 3175 conjuncts, 68 conjunts are in the unsatisfiable core [2022-07-19 22:02:56,007 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:02:56,233 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 22:02:56,719 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 22:02:56,846 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 262 proven. 4 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-07-19 22:02:56,846 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:02:57,290 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 33 treesize of output 25 [2022-07-19 22:02:57,427 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-19 22:02:57,427 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 19 treesize of output 18 [2022-07-19 22:02:57,585 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 22:02:57,745 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 25 proven. 60 refuted. 0 times theorem prover too weak. 353 trivial. 0 not checked. [2022-07-19 22:02:57,745 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1657707853] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:02:57,746 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 22:02:57,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 16] total 51 [2022-07-19 22:02:57,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560260600] [2022-07-19 22:02:57,746 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 22:02:57,746 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 51 states [2022-07-19 22:02:57,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:02:57,747 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 51 interpolants. [2022-07-19 22:02:57,747 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=2343, Unknown=0, NotChecked=0, Total=2550 [2022-07-19 22:02:57,747 INFO L87 Difference]: Start difference. First operand 1052 states and 1446 transitions. Second operand has 51 states, 45 states have (on average 5.177777777777778) internal successors, (233), 40 states have internal predecessors, (233), 18 states have call successors, (79), 11 states have call predecessors, (79), 19 states have return successors, (76), 18 states have call predecessors, (76), 18 states have call successors, (76) [2022-07-19 22:03:00,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:03:00,918 INFO L93 Difference]: Finished difference Result 1720 states and 2373 transitions. [2022-07-19 22:03:00,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-19 22:03:00,918 INFO L78 Accepts]: Start accepts. Automaton has has 51 states, 45 states have (on average 5.177777777777778) internal successors, (233), 40 states have internal predecessors, (233), 18 states have call successors, (79), 11 states have call predecessors, (79), 19 states have return successors, (76), 18 states have call predecessors, (76), 18 states have call successors, (76) Word has length 240 [2022-07-19 22:03:00,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:03:00,922 INFO L225 Difference]: With dead ends: 1720 [2022-07-19 22:03:00,923 INFO L226 Difference]: Without dead ends: 1105 [2022-07-19 22:03:00,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 588 GetRequests, 516 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1321 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=557, Invalid=4699, Unknown=0, NotChecked=0, Total=5256 [2022-07-19 22:03:00,925 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 629 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 4032 mSolverCounterSat, 524 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 5987 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 524 IncrementalHoareTripleChecker+Valid, 4032 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1431 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-07-19 22:03:00,925 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 833 Invalid, 5987 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [524 Valid, 4032 Invalid, 0 Unknown, 1431 Unchecked, 2.4s Time] [2022-07-19 22:03:00,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1105 states. [2022-07-19 22:03:00,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1105 to 1056. [2022-07-19 22:03:00,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1056 states, 731 states have (on average 1.131326949384405) internal successors, (827), 744 states have internal predecessors, (827), 237 states have call successors, (237), 74 states have call predecessors, (237), 87 states have return successors, (384), 239 states have call predecessors, (384), 235 states have call successors, (384) [2022-07-19 22:03:00,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1056 states to 1056 states and 1448 transitions. [2022-07-19 22:03:00,986 INFO L78 Accepts]: Start accepts. Automaton has 1056 states and 1448 transitions. Word has length 240 [2022-07-19 22:03:00,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:03:00,986 INFO L495 AbstractCegarLoop]: Abstraction has 1056 states and 1448 transitions. [2022-07-19 22:03:00,986 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 51 states, 45 states have (on average 5.177777777777778) internal successors, (233), 40 states have internal predecessors, (233), 18 states have call successors, (79), 11 states have call predecessors, (79), 19 states have return successors, (76), 18 states have call predecessors, (76), 18 states have call successors, (76) [2022-07-19 22:03:00,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1056 states and 1448 transitions. [2022-07-19 22:03:00,989 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 241 [2022-07-19 22:03:00,989 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:03:00,990 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:03:01,014 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-07-19 22:03:01,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:03:01,207 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:03:01,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:03:01,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1740126392, now seen corresponding path program 2 times [2022-07-19 22:03:01,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:03:01,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [164276241] [2022-07-19 22:03:01,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:03:01,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:03:01,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:01,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:03:01,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:01,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:03:01,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:01,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:03:01,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:01,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 22:03:01,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:01,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:03:01,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:01,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 22:03:01,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:01,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 22:03:01,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:01,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:03:01,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:01,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:03:01,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:01,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:03:01,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:01,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:03:01,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:01,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:03:01,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:01,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:03:01,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:01,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 22:03:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:01,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 22:03:01,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:01,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:03:01,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:01,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:03:01,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:01,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:03:01,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:01,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 22:03:01,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:01,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-19 22:03:01,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:01,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 22:03:01,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:01,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-19 22:03:01,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:01,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 144 [2022-07-19 22:03:01,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:02,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 156 [2022-07-19 22:03:02,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:02,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2022-07-19 22:03:02,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:02,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 180 [2022-07-19 22:03:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:02,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 188 [2022-07-19 22:03:02,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:02,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 206 [2022-07-19 22:03:02,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:02,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 212 [2022-07-19 22:03:02,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:02,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 220 [2022-07-19 22:03:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:02,181 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 82 proven. 58 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2022-07-19 22:03:02,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:03:02,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [164276241] [2022-07-19 22:03:02,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [164276241] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:03:02,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525635347] [2022-07-19 22:03:02,181 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 22:03:02,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:03:02,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:03:02,183 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:03:02,183 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-07-19 22:03:02,755 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 22:03:02,755 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:03:02,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 3175 conjuncts, 54 conjunts are in the unsatisfiable core [2022-07-19 22:03:02,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:03:03,118 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:03:03,119 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:03:03,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:03:03,120 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:03:03,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:03:03,122 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:03:03,129 INFO L356 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-07-19 22:03:03,130 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 50 treesize of output 53 [2022-07-19 22:03:03,672 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 308 proven. 16 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-07-19 22:03:03,672 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:03:04,254 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-19 22:03:04,255 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 25 [2022-07-19 22:03:04,316 INFO L134 CoverageAnalysis]: Checked inductivity of 438 backedges. 42 proven. 86 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2022-07-19 22:03:04,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525635347] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:03:04,316 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 22:03:04,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 14, 12] total 42 [2022-07-19 22:03:04,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2086453674] [2022-07-19 22:03:04,317 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 22:03:04,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 42 states [2022-07-19 22:03:04,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:03:04,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 42 interpolants. [2022-07-19 22:03:04,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=1589, Unknown=0, NotChecked=0, Total=1722 [2022-07-19 22:03:04,318 INFO L87 Difference]: Start difference. First operand 1056 states and 1448 transitions. Second operand has 42 states, 38 states have (on average 5.052631578947368) internal successors, (192), 35 states have internal predecessors, (192), 14 states have call successors, (65), 9 states have call predecessors, (65), 10 states have return successors, (60), 12 states have call predecessors, (60), 13 states have call successors, (60) [2022-07-19 22:03:10,693 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:03:10,693 INFO L93 Difference]: Finished difference Result 1646 states and 2310 transitions. [2022-07-19 22:03:10,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2022-07-19 22:03:10,694 INFO L78 Accepts]: Start accepts. Automaton has has 42 states, 38 states have (on average 5.052631578947368) internal successors, (192), 35 states have internal predecessors, (192), 14 states have call successors, (65), 9 states have call predecessors, (65), 10 states have return successors, (60), 12 states have call predecessors, (60), 13 states have call successors, (60) Word has length 240 [2022-07-19 22:03:10,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:03:10,698 INFO L225 Difference]: With dead ends: 1646 [2022-07-19 22:03:10,699 INFO L226 Difference]: Without dead ends: 1155 [2022-07-19 22:03:10,701 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 616 GetRequests, 520 SyntacticMatches, 11 SemanticMatches, 85 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1724 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=706, Invalid=6776, Unknown=0, NotChecked=0, Total=7482 [2022-07-19 22:03:10,701 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 390 mSDsluCounter, 1356 mSDsCounter, 0 mSdLazyCounter, 6996 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 431 SdHoareTripleChecker+Valid, 1574 SdHoareTripleChecker+Invalid, 8232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 6996 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 931 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-07-19 22:03:10,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [431 Valid, 1574 Invalid, 8232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 6996 Invalid, 0 Unknown, 931 Unchecked, 4.3s Time] [2022-07-19 22:03:10,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1155 states. [2022-07-19 22:03:10,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1155 to 1019. [2022-07-19 22:03:10,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1019 states, 695 states have (on average 1.1266187050359713) internal successors, (783), 707 states have internal predecessors, (783), 244 states have call successors, (244), 71 states have call predecessors, (244), 79 states have return successors, (396), 242 states have call predecessors, (396), 242 states have call successors, (396) [2022-07-19 22:03:10,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1019 states to 1019 states and 1423 transitions. [2022-07-19 22:03:10,795 INFO L78 Accepts]: Start accepts. Automaton has 1019 states and 1423 transitions. Word has length 240 [2022-07-19 22:03:10,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:03:10,795 INFO L495 AbstractCegarLoop]: Abstraction has 1019 states and 1423 transitions. [2022-07-19 22:03:10,795 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 42 states, 38 states have (on average 5.052631578947368) internal successors, (192), 35 states have internal predecessors, (192), 14 states have call successors, (65), 9 states have call predecessors, (65), 10 states have return successors, (60), 12 states have call predecessors, (60), 13 states have call successors, (60) [2022-07-19 22:03:10,796 INFO L276 IsEmpty]: Start isEmpty. Operand 1019 states and 1423 transitions. [2022-07-19 22:03:10,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-07-19 22:03:10,799 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:03:10,799 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:03:10,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-07-19 22:03:11,021 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-19 22:03:11,021 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:03:11,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:03:11,021 INFO L85 PathProgramCache]: Analyzing trace with hash 340717258, now seen corresponding path program 1 times [2022-07-19 22:03:11,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:03:11,021 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [435005399] [2022-07-19 22:03:11,021 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:03:11,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:03:11,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:11,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:03:11,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:11,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:03:11,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:11,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:03:11,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:11,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 22:03:11,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:11,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:03:11,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:11,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 22:03:11,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:11,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 22:03:11,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:11,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:03:11,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:11,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:03:11,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:11,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:03:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:11,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:03:11,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:11,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:03:11,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:11,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:03:11,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:11,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 22:03:11,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:11,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 22:03:11,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:11,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:03:11,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:11,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:03:11,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:11,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:03:11,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:11,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 22:03:11,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:11,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-19 22:03:11,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:11,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 22:03:11,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:11,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-19 22:03:11,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:11,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:03:11,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:11,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:03:11,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:11,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-19 22:03:11,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:11,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 171 [2022-07-19 22:03:11,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:11,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2022-07-19 22:03:11,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:11,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2022-07-19 22:03:11,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:11,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 197 [2022-07-19 22:03:11,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:11,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 215 [2022-07-19 22:03:11,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:11,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 221 [2022-07-19 22:03:11,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:11,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 229 [2022-07-19 22:03:11,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:11,666 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 31 proven. 23 refuted. 0 times theorem prover too weak. 430 trivial. 0 not checked. [2022-07-19 22:03:11,666 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:03:11,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [435005399] [2022-07-19 22:03:11,667 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [435005399] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:03:11,667 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [210043809] [2022-07-19 22:03:11,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:03:11,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:03:11,667 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:03:11,668 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:03:11,669 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-07-19 22:03:12,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:12,303 INFO L263 TraceCheckSpWp]: Trace formula consists of 3226 conjuncts, 100 conjunts are in the unsatisfiable core [2022-07-19 22:03:12,308 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:03:12,388 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 22:03:12,390 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 22:03:17,853 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 22:03:17,857 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 22:03:17,868 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_5606 Int) (save_byte_from_array_~storage.base Int) (v_ArrVal_5603 Int) (v_ArrVal_5604 (Array Int Int))) (and (= |c_#memory_int| (store |c_old(#memory_int)| save_byte_from_array_~storage.base (store (store (select |c_old(#memory_int)| save_byte_from_array_~storage.base) |c_save_byte_from_array_#in~storage.offset| v_ArrVal_5603) (+ |c_save_byte_from_array_#in~storage.offset| 8) v_ArrVal_5606))) (= (store |c_old(#memory_$Pointer$.base)| save_byte_from_array_~storage.base v_ArrVal_5604) |c_#memory_$Pointer$.base|))) is different from true [2022-07-19 22:03:17,877 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:03:17,878 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:03:17,879 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 30 [2022-07-19 22:03:17,890 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:03:17,891 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 23 [2022-07-19 22:03:17,895 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2022-07-19 22:03:17,926 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:03:17,927 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:03:17,928 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:03:17,928 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 32 [2022-07-19 22:03:17,931 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:03:17,932 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 22 treesize of output 23 [2022-07-19 22:03:17,934 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 24 treesize of output 16 [2022-07-19 22:03:17,936 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 13 treesize of output 9 [2022-07-19 22:03:24,590 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 319 proven. 34 refuted. 0 times theorem prover too weak. 129 trivial. 2 not checked. [2022-07-19 22:03:24,591 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:03:25,071 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_5625 Int) (v_ArrVal_5624 Int) (v_save_byte_from_array_~storage.base_85 Int) (v_ArrVal_5626 (Array Int Int))) (or (not (= (mod (select (select (store |c_#memory_int| v_save_byte_from_array_~storage.base_85 (store (store (select |c_#memory_int| v_save_byte_from_array_~storage.base_85) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#old_byte_from_src~0#1.offset| v_ArrVal_5625) (+ |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#old_byte_from_src~0#1.offset| 8) v_ArrVal_5624)) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|) (+ 16 |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.offset|)) 18446744073709551616) 0)) (not (= (select (select (store |c_#memory_$Pointer$.base| v_save_byte_from_array_~storage.base_85 v_ArrVal_5626) |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_write_from_whole_buffer_harness_~#src~0#1.offset| 8)) 0)))) is different from false [2022-07-19 22:03:25,072 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [210043809] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:03:25,072 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 22:03:25,072 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 29] total 39 [2022-07-19 22:03:25,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1626585893] [2022-07-19 22:03:25,073 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 22:03:25,073 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2022-07-19 22:03:25,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:03:25,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2022-07-19 22:03:25,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=161, Invalid=1911, Unknown=6, NotChecked=178, Total=2256 [2022-07-19 22:03:25,074 INFO L87 Difference]: Start difference. First operand 1019 states and 1423 transitions. Second operand has 39 states, 35 states have (on average 4.885714285714286) internal successors, (171), 31 states have internal predecessors, (171), 12 states have call successors, (58), 9 states have call predecessors, (58), 12 states have return successors, (55), 12 states have call predecessors, (55), 12 states have call successors, (55) [2022-07-19 22:03:34,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:03:34,247 INFO L93 Difference]: Finished difference Result 1395 states and 1927 transitions. [2022-07-19 22:03:34,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 52 states. [2022-07-19 22:03:34,248 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 35 states have (on average 4.885714285714286) internal successors, (171), 31 states have internal predecessors, (171), 12 states have call successors, (58), 9 states have call predecessors, (58), 12 states have return successors, (55), 12 states have call predecessors, (55), 12 states have call successors, (55) Word has length 249 [2022-07-19 22:03:34,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:03:34,252 INFO L225 Difference]: With dead ends: 1395 [2022-07-19 22:03:34,252 INFO L226 Difference]: Without dead ends: 921 [2022-07-19 22:03:34,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 455 GetRequests, 370 SyntacticMatches, 5 SemanticMatches, 80 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 1542 ImplicationChecksByTransitivity, 20.2s TimeCoverageRelationStatistics Valid=456, Invalid=5861, Unknown=11, NotChecked=314, Total=6642 [2022-07-19 22:03:34,255 INFO L413 NwaCegarLoop]: 207 mSDtfsCounter, 303 mSDsluCounter, 1223 mSDsCounter, 0 mSdLazyCounter, 2399 mSolverCounterSat, 270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 322 SdHoareTripleChecker+Valid, 1430 SdHoareTripleChecker+Invalid, 4275 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 270 IncrementalHoareTripleChecker+Valid, 2399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1606 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-07-19 22:03:34,255 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [322 Valid, 1430 Invalid, 4275 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [270 Valid, 2399 Invalid, 0 Unknown, 1606 Unchecked, 1.2s Time] [2022-07-19 22:03:34,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 921 states. [2022-07-19 22:03:34,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 921 to 900. [2022-07-19 22:03:34,311 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 900 states, 621 states have (on average 1.1127214170692432) internal successors, (691), 631 states have internal predecessors, (691), 205 states have call successors, (205), 66 states have call predecessors, (205), 73 states have return successors, (323), 204 states have call predecessors, (323), 203 states have call successors, (323) [2022-07-19 22:03:34,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 900 states to 900 states and 1219 transitions. [2022-07-19 22:03:34,314 INFO L78 Accepts]: Start accepts. Automaton has 900 states and 1219 transitions. Word has length 249 [2022-07-19 22:03:34,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:03:34,314 INFO L495 AbstractCegarLoop]: Abstraction has 900 states and 1219 transitions. [2022-07-19 22:03:34,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 35 states have (on average 4.885714285714286) internal successors, (171), 31 states have internal predecessors, (171), 12 states have call successors, (58), 9 states have call predecessors, (58), 12 states have return successors, (55), 12 states have call predecessors, (55), 12 states have call successors, (55) [2022-07-19 22:03:34,315 INFO L276 IsEmpty]: Start isEmpty. Operand 900 states and 1219 transitions. [2022-07-19 22:03:34,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2022-07-19 22:03:34,317 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:03:34,317 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 22:03:34,344 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-07-19 22:03:34,527 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-19 22:03:34,527 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:03:34,528 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:03:34,528 INFO L85 PathProgramCache]: Analyzing trace with hash 1674629369, now seen corresponding path program 2 times [2022-07-19 22:03:34,528 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:03:34,528 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98425698] [2022-07-19 22:03:34,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:03:34,528 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:03:35,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:35,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:03:35,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:35,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:03:35,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:35,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 22:03:35,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:35,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-19 22:03:35,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:35,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 22:03:35,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:35,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 22:03:35,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:35,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 22:03:35,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:35,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:03:35,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:35,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:03:35,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:35,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:03:35,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:35,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:03:35,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:35,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:03:35,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:35,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:03:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:35,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 22:03:35,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:35,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-19 22:03:35,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:35,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:03:35,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:35,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:03:35,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:35,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:03:35,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:35,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 22:03:35,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:35,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-19 22:03:35,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:35,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-19 22:03:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:35,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-19 22:03:35,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:35,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 22:03:35,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:35,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 22:03:35,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:35,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 155 [2022-07-19 22:03:35,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:36,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-07-19 22:03:36,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:36,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-19 22:03:36,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:36,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 191 [2022-07-19 22:03:36,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:36,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 199 [2022-07-19 22:03:36,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:36,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 217 [2022-07-19 22:03:36,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:36,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 223 [2022-07-19 22:03:36,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:36,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 231 [2022-07-19 22:03:36,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:03:36,094 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 21 proven. 41 refuted. 0 times theorem prover too weak. 428 trivial. 0 not checked. [2022-07-19 22:03:36,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:03:36,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98425698] [2022-07-19 22:03:36,095 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98425698] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:03:36,095 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [762591259] [2022-07-19 22:03:36,095 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 22:03:36,095 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:03:36,096 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:03:36,097 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 22:03:36,098 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-07-19 22:03:36,854 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 22:03:36,854 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:03:36,867 INFO L263 TraceCheckSpWp]: Trace formula consists of 3228 conjuncts, 38 conjunts are in the unsatisfiable core [2022-07-19 22:03:36,870 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:04:01,584 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 189 proven. 12 refuted. 0 times theorem prover too weak. 289 trivial. 0 not checked. [2022-07-19 22:04:01,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:04:01,949 INFO L134 CoverageAnalysis]: Checked inductivity of 490 backedges. 110 proven. 14 refuted. 0 times theorem prover too weak. 366 trivial. 0 not checked. [2022-07-19 22:04:01,950 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [762591259] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:04:01,950 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 22:04:01,950 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 10, 9] total 43 [2022-07-19 22:04:01,950 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2084791946] [2022-07-19 22:04:01,950 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 22:04:01,950 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2022-07-19 22:04:01,951 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:04:01,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2022-07-19 22:04:01,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1662, Unknown=4, NotChecked=0, Total=1806 [2022-07-19 22:04:01,959 INFO L87 Difference]: Start difference. First operand 900 states and 1219 transitions. Second operand has 43 states, 39 states have (on average 4.3076923076923075) internal successors, (168), 37 states have internal predecessors, (168), 16 states have call successors, (66), 6 states have call predecessors, (66), 12 states have return successors, (63), 14 states have call predecessors, (63), 16 states have call successors, (63)