./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 2d2088ac57520281350e2a5a3a1c8295b6f3f6b1edc40c64fce86e2816b5a5aa --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 21:59:38,723 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 21:59:38,725 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 21:59:38,747 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 21:59:38,747 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 21:59:38,748 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 21:59:38,751 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 21:59:38,755 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 21:59:38,757 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 21:59:38,762 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 21:59:38,762 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 21:59:38,764 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 21:59:38,764 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 21:59:38,766 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 21:59:38,767 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 21:59:38,769 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 21:59:38,769 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 21:59:38,771 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 21:59:38,774 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 21:59:38,780 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 21:59:38,782 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 21:59:38,783 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 21:59:38,784 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 21:59:38,784 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 21:59:38,786 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 21:59:38,788 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 21:59:38,788 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 21:59:38,789 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 21:59:38,790 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 21:59:38,790 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 21:59:38,791 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 21:59:38,791 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 21:59:38,792 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 21:59:38,793 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 21:59:38,793 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 21:59:38,794 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 21:59:38,794 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 21:59:38,795 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 21:59:38,795 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 21:59:38,795 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 21:59:38,796 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 21:59:38,797 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 21:59:38,798 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-19 21:59:38,828 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 21:59:38,829 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 21:59:38,829 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 21:59:38,829 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 21:59:38,830 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 21:59:38,830 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 21:59:38,831 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 21:59:38,831 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 21:59:38,831 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 21:59:38,832 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 21:59:38,832 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 21:59:38,832 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 21:59:38,832 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 21:59:38,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 21:59:38,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 21:59:38,833 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 21:59:38,833 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 21:59:38,833 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 21:59:38,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 21:59:38,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 21:59:38,834 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 21:59:38,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:59:38,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 21:59:38,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 21:59:38,834 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 21:59:38,835 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 21:59:38,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 21:59:38,835 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 21:59:38,835 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 21:59:38,835 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 21:59:38,836 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d2088ac57520281350e2a5a3a1c8295b6f3f6b1edc40c64fce86e2816b5a5aa [2022-07-19 21:59:39,049 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 21:59:39,109 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 21:59:39,111 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 21:59:39,112 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 21:59:39,112 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 21:59:39,113 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i [2022-07-19 21:59:39,158 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/196f65849/44a353f4209f42078e17cd66eaffe0e3/FLAG6bee0e301 [2022-07-19 21:59:39,763 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 21:59:39,766 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_write_be32_harness.i [2022-07-19 21:59:39,807 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/196f65849/44a353f4209f42078e17cd66eaffe0e3/FLAG6bee0e301 [2022-07-19 21:59:40,190 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/196f65849/44a353f4209f42078e17cd66eaffe0e3 [2022-07-19 21:59:40,192 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 21:59:40,193 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 21:59:40,194 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 21:59:40,194 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 21:59:40,196 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 21:59:40,197 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:59:40" (1/1) ... [2022-07-19 21:59:40,198 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fa65981 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:40, skipping insertion in model container [2022-07-19 21:59:40,198 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 09:59:40" (1/1) ... [2022-07-19 21:59:40,203 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 21:59:40,289 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 21:59:40,524 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_be32_harness.i[4497,4510] [2022-07-19 21:59:40,530 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_be32_harness.i[4557,4570] [2022-07-19 21:59:41,092 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:41,106 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:41,107 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:41,108 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:41,110 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:41,128 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:41,132 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:41,138 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:41,143 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:41,400 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-19 21:59:41,401 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-19 21:59:41,402 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-19 21:59:41,403 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-19 21:59:41,404 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-19 21:59:41,404 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-19 21:59:41,405 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-19 21:59:41,405 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-19 21:59:41,405 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-19 21:59:41,406 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-19 21:59:41,487 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-19 21:59:41,567 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:41,568 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:41,620 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:59:41,659 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 21:59:41,675 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_be32_harness.i[4497,4510] [2022-07-19 21:59:41,677 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_be32_harness.i[4557,4570] [2022-07-19 21:59:41,713 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:41,714 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:41,715 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:41,715 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:41,715 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:41,722 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:41,723 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:41,723 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:41,724 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:41,771 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-19 21:59:41,772 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-19 21:59:41,772 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-19 21:59:41,772 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-19 21:59:41,773 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-19 21:59:41,773 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-19 21:59:41,773 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-19 21:59:41,774 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-19 21:59:41,774 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-19 21:59:41,774 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-19 21:59:41,784 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-19 21:59:41,820 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:41,820 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-19 21:59:41,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 21:59:42,026 INFO L208 MainTranslator]: Completed translation [2022-07-19 21:59:42,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:42 WrapperNode [2022-07-19 21:59:42,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 21:59:42,028 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 21:59:42,028 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 21:59:42,028 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 21:59:42,033 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:42" (1/1) ... [2022-07-19 21:59:42,154 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:42" (1/1) ... [2022-07-19 21:59:42,227 INFO L137 Inliner]: procedures = 691, calls = 2619, calls flagged for inlining = 62, calls inlined = 9, statements flattened = 861 [2022-07-19 21:59:42,227 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 21:59:42,228 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 21:59:42,228 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 21:59:42,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 21:59:42,234 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:42" (1/1) ... [2022-07-19 21:59:42,234 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:42" (1/1) ... [2022-07-19 21:59:42,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:42" (1/1) ... [2022-07-19 21:59:42,245 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:42" (1/1) ... [2022-07-19 21:59:42,285 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:42" (1/1) ... [2022-07-19 21:59:42,298 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:42" (1/1) ... [2022-07-19 21:59:42,302 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:42" (1/1) ... [2022-07-19 21:59:42,314 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 21:59:42,319 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 21:59:42,320 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 21:59:42,320 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 21:59:42,321 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:42" (1/1) ... [2022-07-19 21:59:42,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 21:59:42,333 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:59:42,344 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 21:59:42,366 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 21:59:42,372 INFO L130 BoogieDeclarations]: Found specification of procedure htonl [2022-07-19 21:59:42,372 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-07-19 21:59:42,372 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-07-19 21:59:42,373 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hton32 [2022-07-19 21:59:42,373 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hton32 [2022-07-19 21:59:42,373 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-19 21:59:42,373 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-19 21:59:42,373 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-19 21:59:42,374 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-19 21:59:42,374 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-19 21:59:42,374 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-19 21:59:42,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-19 21:59:42,375 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 21:59:42,375 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-19 21:59:42,375 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-07-19 21:59:42,375 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-07-19 21:59:42,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 21:59:42,376 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 21:59:42,376 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-19 21:59:42,376 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-19 21:59:42,376 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-19 21:59:42,376 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-19 21:59:42,376 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-19 21:59:42,376 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-19 21:59:42,376 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-07-19 21:59:42,377 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-07-19 21:59:42,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-19 21:59:42,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-19 21:59:42,378 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_write [2022-07-19 21:59:42,378 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_write [2022-07-19 21:59:42,378 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-19 21:59:42,378 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-19 21:59:42,378 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-19 21:59:42,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-19 21:59:42,379 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 21:59:42,581 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 21:59:42,583 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 21:59:43,339 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 21:59:43,346 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 21:59:43,347 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 21:59:43,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:59:43 BoogieIcfgContainer [2022-07-19 21:59:43,349 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 21:59:43,351 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 21:59:43,351 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 21:59:43,354 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 21:59:43,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 09:59:40" (1/3) ... [2022-07-19 21:59:43,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f73ef6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:59:43, skipping insertion in model container [2022-07-19 21:59:43,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 09:59:42" (2/3) ... [2022-07-19 21:59:43,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f73ef6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 09:59:43, skipping insertion in model container [2022-07-19 21:59:43,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 09:59:43" (3/3) ... [2022-07-19 21:59:43,356 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_write_be32_harness.i [2022-07-19 21:59:43,371 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 21:59:43,371 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 21:59:43,420 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 21:59:43,427 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@1c5fa762, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5eb76614 [2022-07-19 21:59:43,427 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 21:59:43,431 INFO L276 IsEmpty]: Start isEmpty. Operand has 136 states, 88 states have (on average 1.2272727272727273) internal successors, (108), 89 states have internal predecessors, (108), 35 states have call successors, (35), 11 states have call predecessors, (35), 11 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) [2022-07-19 21:59:43,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-19 21:59:43,441 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:59:43,442 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:59:43,443 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:59:43,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:59:43,448 INFO L85 PathProgramCache]: Analyzing trace with hash -187599697, now seen corresponding path program 1 times [2022-07-19 21:59:43,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:59:43,454 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [521178008] [2022-07-19 21:59:43,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:43,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:59:43,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:43,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:59:43,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:43,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:59:43,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:43,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:59:43,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:43,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:43,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:43,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:59:43,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:43,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 21:59:43,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:43,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 21:59:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:43,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 21:59:43,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:43,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 21:59:43,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:43,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 21:59:43,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:43,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 21:59:43,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:43,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 21:59:43,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:43,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 21:59:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:43,958 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2022-07-19 21:59:43,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:59:43,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [521178008] [2022-07-19 21:59:43,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [521178008] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:59:43,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:59:43,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 21:59:43,960 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752806520] [2022-07-19 21:59:43,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:59:43,964 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 21:59:43,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:59:43,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 21:59:43,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:59:43,983 INFO L87 Difference]: Start difference. First operand has 136 states, 88 states have (on average 1.2272727272727273) internal successors, (108), 89 states have internal predecessors, (108), 35 states have call successors, (35), 11 states have call predecessors, (35), 11 states have return successors, (35), 35 states have call predecessors, (35), 35 states have call successors, (35) Second operand has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 21:59:44,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:59:44,154 INFO L93 Difference]: Finished difference Result 268 states and 377 transitions. [2022-07-19 21:59:44,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 21:59:44,156 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) Word has length 90 [2022-07-19 21:59:44,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:59:44,162 INFO L225 Difference]: With dead ends: 268 [2022-07-19 21:59:44,162 INFO L226 Difference]: Without dead ends: 131 [2022-07-19 21:59:44,165 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 21:59:44,167 INFO L413 NwaCegarLoop]: 160 mSDtfsCounter, 64 mSDsluCounter, 35 mSDsCounter, 0 mSdLazyCounter, 42 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 42 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 21:59:44,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [78 Valid, 195 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 42 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 21:59:44,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-07-19 21:59:44,195 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2022-07-19 21:59:44,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 84 states have (on average 1.2023809523809523) internal successors, (101), 85 states have internal predecessors, (101), 35 states have call successors, (35), 11 states have call predecessors, (35), 11 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-07-19 21:59:44,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 170 transitions. [2022-07-19 21:59:44,199 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 170 transitions. Word has length 90 [2022-07-19 21:59:44,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:59:44,199 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 170 transitions. [2022-07-19 21:59:44,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.666666666666666) internal successors, (35), 2 states have internal predecessors, (35), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 1 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 21:59:44,199 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 170 transitions. [2022-07-19 21:59:44,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-19 21:59:44,202 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:59:44,202 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:59:44,202 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 21:59:44,203 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:59:44,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:59:44,203 INFO L85 PathProgramCache]: Analyzing trace with hash 1729750963, now seen corresponding path program 1 times [2022-07-19 21:59:44,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:59:44,204 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [98678347] [2022-07-19 21:59:44,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:44,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:59:44,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:44,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:59:44,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:44,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:59:44,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:44,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:59:44,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:44,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:44,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:44,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:59:44,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:44,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 21:59:44,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:44,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 21:59:44,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:44,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 21:59:44,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:44,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 21:59:44,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:44,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 21:59:44,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:44,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 21:59:44,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:44,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 21:59:44,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:44,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 21:59:44,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:44,479 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-19 21:59:44,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:59:44,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [98678347] [2022-07-19 21:59:44,480 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [98678347] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:59:44,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857857250] [2022-07-19 21:59:44,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:44,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:44,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:59:44,482 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:59:44,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 21:59:44,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:44,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 2630 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-19 21:59:44,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:59:44,996 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-19 21:59:44,996 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:59:44,996 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857857250] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:59:44,997 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:59:44,997 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 10 [2022-07-19 21:59:44,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1034486732] [2022-07-19 21:59:44,998 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:59:44,998 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:59:44,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:59:44,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:59:44,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:59:44,999 INFO L87 Difference]: Start difference. First operand 131 states and 170 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-19 21:59:45,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:59:45,133 INFO L93 Difference]: Finished difference Result 240 states and 319 transitions. [2022-07-19 21:59:45,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 21:59:45,134 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 90 [2022-07-19 21:59:45,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:59:45,137 INFO L225 Difference]: With dead ends: 240 [2022-07-19 21:59:45,137 INFO L226 Difference]: Without dead ends: 134 [2022-07-19 21:59:45,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2022-07-19 21:59:45,138 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 198 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 483 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 21:59:45,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 483 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 21:59:45,139 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-07-19 21:59:45,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2022-07-19 21:59:45,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 86 states have (on average 1.197674418604651) internal successors, (103), 88 states have internal predecessors, (103), 35 states have call successors, (35), 11 states have call predecessors, (35), 12 states have return successors, (38), 34 states have call predecessors, (38), 34 states have call successors, (38) [2022-07-19 21:59:45,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 176 transitions. [2022-07-19 21:59:45,150 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 176 transitions. Word has length 90 [2022-07-19 21:59:45,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:59:45,151 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 176 transitions. [2022-07-19 21:59:45,151 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-19 21:59:45,151 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 176 transitions. [2022-07-19 21:59:45,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-19 21:59:45,153 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:59:45,153 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:59:45,194 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 21:59:45,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:45,396 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:59:45,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:59:45,396 INFO L85 PathProgramCache]: Analyzing trace with hash -77726936, now seen corresponding path program 1 times [2022-07-19 21:59:45,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:59:45,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1409866312] [2022-07-19 21:59:45,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:45,397 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:59:45,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:45,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:59:45,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:45,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:59:45,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:45,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:59:45,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:45,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:45,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:45,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:59:45,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:45,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 21:59:45,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:45,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 21:59:45,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:45,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 21:59:45,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:45,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 21:59:45,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:45,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 21:59:45,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:45,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 21:59:45,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:45,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 21:59:45,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:45,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 21:59:45,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:45,678 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 4 proven. 8 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-19 21:59:45,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:59:45,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1409866312] [2022-07-19 21:59:45,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1409866312] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:59:45,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585525668] [2022-07-19 21:59:45,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:45,679 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:45,680 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:59:45,681 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:59:45,682 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 21:59:46,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:46,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 2647 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 21:59:46,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:59:46,230 INFO L134 CoverageAnalysis]: Checked inductivity of 90 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-19 21:59:46,231 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:59:46,231 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585525668] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:59:46,231 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:59:46,231 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-07-19 21:59:46,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801542642] [2022-07-19 21:59:46,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:59:46,232 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 21:59:46,232 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:59:46,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 21:59:46,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2022-07-19 21:59:46,233 INFO L87 Difference]: Start difference. First operand 134 states and 176 transitions. Second operand has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-19 21:59:46,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:59:46,368 INFO L93 Difference]: Finished difference Result 235 states and 310 transitions. [2022-07-19 21:59:46,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:59:46,369 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 96 [2022-07-19 21:59:46,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:59:46,372 INFO L225 Difference]: With dead ends: 235 [2022-07-19 21:59:46,373 INFO L226 Difference]: Without dead ends: 134 [2022-07-19 21:59:46,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2022-07-19 21:59:46,375 INFO L413 NwaCegarLoop]: 136 mSDtfsCounter, 215 mSDsluCounter, 349 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 485 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 21:59:46,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 485 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 21:59:46,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-07-19 21:59:46,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 134. [2022-07-19 21:59:46,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 134 states, 86 states have (on average 1.197674418604651) internal successors, (103), 88 states have internal predecessors, (103), 35 states have call successors, (35), 11 states have call predecessors, (35), 12 states have return successors, (37), 34 states have call predecessors, (37), 34 states have call successors, (37) [2022-07-19 21:59:46,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 175 transitions. [2022-07-19 21:59:46,405 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 175 transitions. Word has length 96 [2022-07-19 21:59:46,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:59:46,406 INFO L495 AbstractCegarLoop]: Abstraction has 134 states and 175 transitions. [2022-07-19 21:59:46,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.666666666666666) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-19 21:59:46,406 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 175 transitions. [2022-07-19 21:59:46,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-19 21:59:46,407 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:59:46,407 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:59:46,430 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-19 21:59:46,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-19 21:59:46,625 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:59:46,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:59:46,626 INFO L85 PathProgramCache]: Analyzing trace with hash -2089043619, now seen corresponding path program 2 times [2022-07-19 21:59:46,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:59:46,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771968002] [2022-07-19 21:59:46,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:46,626 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:59:46,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:46,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:59:46,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:46,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:59:46,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:46,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:59:46,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:46,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:46,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:46,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:59:46,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:46,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 21:59:46,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:46,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 21:59:46,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:46,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 21:59:46,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:46,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 21:59:46,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:46,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 21:59:46,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:46,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 21:59:46,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:46,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 21:59:46,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:46,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-19 21:59:46,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:46,846 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-19 21:59:46,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:59:46,846 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771968002] [2022-07-19 21:59:46,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771968002] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:59:46,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [718643028] [2022-07-19 21:59:46,847 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 21:59:46,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:46,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:59:46,848 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:59:46,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 21:59:47,557 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 21:59:47,558 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 21:59:47,567 INFO L263 TraceCheckSpWp]: Trace formula consists of 2664 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-19 21:59:47,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:59:47,614 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-19 21:59:47,614 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:59:47,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [718643028] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:59:47,615 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:59:47,615 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 9 [2022-07-19 21:59:47,615 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604422136] [2022-07-19 21:59:47,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:59:47,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 21:59:47,616 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:59:47,616 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 21:59:47,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:59:47,616 INFO L87 Difference]: Start difference. First operand 134 states and 175 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 5 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-19 21:59:47,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:59:47,715 INFO L93 Difference]: Finished difference Result 225 states and 296 transitions. [2022-07-19 21:59:47,715 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 21:59:47,715 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 5 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 102 [2022-07-19 21:59:47,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:59:47,716 INFO L225 Difference]: With dead ends: 225 [2022-07-19 21:59:47,716 INFO L226 Difference]: Without dead ends: 131 [2022-07-19 21:59:47,717 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 136 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2022-07-19 21:59:47,717 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 80 mSDsluCounter, 766 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 82 SdHoareTripleChecker+Valid, 921 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 21:59:47,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [82 Valid, 921 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 21:59:47,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2022-07-19 21:59:47,723 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2022-07-19 21:59:47,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 84 states have (on average 1.1904761904761905) internal successors, (100), 85 states have internal predecessors, (100), 35 states have call successors, (35), 11 states have call predecessors, (35), 11 states have return successors, (34), 34 states have call predecessors, (34), 34 states have call successors, (34) [2022-07-19 21:59:47,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 169 transitions. [2022-07-19 21:59:47,724 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 169 transitions. Word has length 102 [2022-07-19 21:59:47,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:59:47,725 INFO L495 AbstractCegarLoop]: Abstraction has 131 states and 169 transitions. [2022-07-19 21:59:47,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 5 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-19 21:59:47,725 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 169 transitions. [2022-07-19 21:59:47,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-19 21:59:47,726 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:59:47,726 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:59:47,762 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 21:59:47,962 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 21:59:47,963 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:59:47,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:59:47,963 INFO L85 PathProgramCache]: Analyzing trace with hash 105172019, now seen corresponding path program 1 times [2022-07-19 21:59:47,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:59:47,963 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1761708103] [2022-07-19 21:59:47,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:47,964 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:59:48,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:48,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:59:48,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:48,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:59:48,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:48,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:59:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:48,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:48,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:48,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:59:48,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:48,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 21:59:48,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:48,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 21:59:48,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:48,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 21:59:48,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:48,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 21:59:48,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:48,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 21:59:48,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:48,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 21:59:48,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:48,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 21:59:48,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:48,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 21:59:48,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:48,271 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-07-19 21:59:48,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:59:48,272 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1761708103] [2022-07-19 21:59:48,272 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1761708103] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:59:48,272 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:59:48,272 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 21:59:48,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [110456394] [2022-07-19 21:59:48,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:59:48,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 21:59:48,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:59:48,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 21:59:48,274 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-07-19 21:59:48,274 INFO L87 Difference]: Start difference. First operand 131 states and 169 transitions. Second operand has 9 states, 8 states have (on average 5.625) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-19 21:59:48,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:59:48,759 INFO L93 Difference]: Finished difference Result 143 states and 186 transitions. [2022-07-19 21:59:48,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 21:59:48,759 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.625) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 114 [2022-07-19 21:59:48,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:59:48,760 INFO L225 Difference]: With dead ends: 143 [2022-07-19 21:59:48,760 INFO L226 Difference]: Without dead ends: 141 [2022-07-19 21:59:48,761 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2022-07-19 21:59:48,761 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 90 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 693 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 534 SdHoareTripleChecker+Invalid, 734 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 693 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 21:59:48,761 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [107 Valid, 534 Invalid, 734 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 693 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 21:59:48,762 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-07-19 21:59:48,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 140. [2022-07-19 21:59:48,769 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140 states, 90 states have (on average 1.1777777777777778) internal successors, (106), 92 states have internal predecessors, (106), 36 states have call successors, (36), 12 states have call predecessors, (36), 13 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2022-07-19 21:59:48,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 183 transitions. [2022-07-19 21:59:48,770 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 183 transitions. Word has length 114 [2022-07-19 21:59:48,771 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:59:48,771 INFO L495 AbstractCegarLoop]: Abstraction has 140 states and 183 transitions. [2022-07-19 21:59:48,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.625) internal successors, (45), 6 states have internal predecessors, (45), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-19 21:59:48,771 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 183 transitions. [2022-07-19 21:59:48,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-19 21:59:48,772 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:59:48,772 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:59:48,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 21:59:48,772 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:59:48,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:59:48,773 INFO L85 PathProgramCache]: Analyzing trace with hash -1045435077, now seen corresponding path program 1 times [2022-07-19 21:59:48,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:59:48,773 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1375200755] [2022-07-19 21:59:48,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:48,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:59:48,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:48,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:59:48,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:48,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:59:48,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:48,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:59:48,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:48,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:48,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:48,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:59:48,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:48,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 21:59:48,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:48,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 21:59:48,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:48,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 21:59:48,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:48,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 21:59:48,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:48,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 21:59:48,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:48,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 21:59:48,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:49,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 21:59:49,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:49,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 21:59:49,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:49,042 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 27 proven. 0 refuted. 0 times theorem prover too weak. 99 trivial. 0 not checked. [2022-07-19 21:59:49,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:59:49,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1375200755] [2022-07-19 21:59:49,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1375200755] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:59:49,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 21:59:49,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 21:59:49,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603182977] [2022-07-19 21:59:49,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:59:49,044 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 21:59:49,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:59:49,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 21:59:49,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:59:49,044 INFO L87 Difference]: Start difference. First operand 140 states and 183 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-19 21:59:49,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:59:49,372 INFO L93 Difference]: Finished difference Result 280 states and 385 transitions. [2022-07-19 21:59:49,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 21:59:49,372 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 118 [2022-07-19 21:59:49,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:59:49,374 INFO L225 Difference]: With dead ends: 280 [2022-07-19 21:59:49,374 INFO L226 Difference]: Without dead ends: 165 [2022-07-19 21:59:49,374 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2022-07-19 21:59:49,375 INFO L413 NwaCegarLoop]: 147 mSDtfsCounter, 144 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 290 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 290 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 21:59:49,375 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 284 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 290 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 21:59:49,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2022-07-19 21:59:49,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 145. [2022-07-19 21:59:49,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 95 states have (on average 1.1894736842105262) internal successors, (113), 97 states have internal predecessors, (113), 36 states have call successors, (36), 12 states have call predecessors, (36), 13 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2022-07-19 21:59:49,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 190 transitions. [2022-07-19 21:59:49,384 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 190 transitions. Word has length 118 [2022-07-19 21:59:49,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:59:49,385 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 190 transitions. [2022-07-19 21:59:49,385 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-19 21:59:49,385 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 190 transitions. [2022-07-19 21:59:49,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-19 21:59:49,386 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:59:49,386 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:59:49,386 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 21:59:49,386 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:59:49,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:59:49,387 INFO L85 PathProgramCache]: Analyzing trace with hash -787269639, now seen corresponding path program 1 times [2022-07-19 21:59:49,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:59:49,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607643749] [2022-07-19 21:59:49,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:49,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:59:49,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:49,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:59:49,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:49,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:59:49,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:49,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:59:49,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:49,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:49,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:49,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:59:49,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:49,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 21:59:49,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:49,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 21:59:49,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:49,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 21:59:49,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:49,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 21:59:49,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:49,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 21:59:49,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:49,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 21:59:49,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:49,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 21:59:49,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:49,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 21:59:49,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:49,854 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 30 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2022-07-19 21:59:49,854 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:59:49,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607643749] [2022-07-19 21:59:49,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607643749] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:59:49,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1224426840] [2022-07-19 21:59:49,854 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:49,855 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:49,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:59:49,856 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:59:49,858 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 21:59:50,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:50,247 INFO L263 TraceCheckSpWp]: Trace formula consists of 2705 conjuncts, 38 conjunts are in the unsatisfiable core [2022-07-19 21:59:50,251 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:59:50,306 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-19 21:59:50,478 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 65 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2022-07-19 21:59:50,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:59:50,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1224426840] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:59:50,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:59:50,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [12] total 17 [2022-07-19 21:59:50,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402847507] [2022-07-19 21:59:50,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:59:50,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 21:59:50,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:59:50,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 21:59:50,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=222, Unknown=0, NotChecked=0, Total=272 [2022-07-19 21:59:50,481 INFO L87 Difference]: Start difference. First operand 145 states and 190 transitions. Second operand has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 10 states have internal predecessors, (59), 5 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-07-19 21:59:50,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:59:50,570 INFO L93 Difference]: Finished difference Result 288 states and 379 transitions. [2022-07-19 21:59:50,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 21:59:50,570 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 10 states have internal predecessors, (59), 5 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) Word has length 118 [2022-07-19 21:59:50,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:59:50,571 INFO L225 Difference]: With dead ends: 288 [2022-07-19 21:59:50,571 INFO L226 Difference]: Without dead ends: 164 [2022-07-19 21:59:50,572 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=250, Unknown=0, NotChecked=0, Total=306 [2022-07-19 21:59:50,573 INFO L413 NwaCegarLoop]: 164 mSDtfsCounter, 23 mSDsluCounter, 1287 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 1451 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 117 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 21:59:50,573 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 1451 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 58 Invalid, 0 Unknown, 117 Unchecked, 0.1s Time] [2022-07-19 21:59:50,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-07-19 21:59:50,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 164. [2022-07-19 21:59:50,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164 states, 113 states have (on average 1.2035398230088497) internal successors, (136), 115 states have internal predecessors, (136), 36 states have call successors, (36), 13 states have call predecessors, (36), 14 states have return successors, (41), 35 states have call predecessors, (41), 35 states have call successors, (41) [2022-07-19 21:59:50,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 213 transitions. [2022-07-19 21:59:50,580 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 213 transitions. Word has length 118 [2022-07-19 21:59:50,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:59:50,581 INFO L495 AbstractCegarLoop]: Abstraction has 164 states and 213 transitions. [2022-07-19 21:59:50,581 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 4.916666666666667) internal successors, (59), 10 states have internal predecessors, (59), 5 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (13), 5 states have call predecessors, (13), 5 states have call successors, (13) [2022-07-19 21:59:50,581 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 213 transitions. [2022-07-19 21:59:50,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-19 21:59:50,582 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:59:50,582 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:59:50,603 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-19 21:59:50,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:50,804 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:59:50,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:59:50,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1549122871, now seen corresponding path program 1 times [2022-07-19 21:59:50,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:59:50,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16469236] [2022-07-19 21:59:50,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:50,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:59:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:50,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:59:50,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:50,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:59:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:50,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:59:50,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:50,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:50,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:50,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:59:50,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:50,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 21:59:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:50,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 21:59:50,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:50,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-19 21:59:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:50,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 21:59:50,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:50,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 21:59:50,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:50,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 21:59:50,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:50,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 21:59:50,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:50,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-19 21:59:50,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:50,971 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 108 trivial. 0 not checked. [2022-07-19 21:59:50,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:59:50,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16469236] [2022-07-19 21:59:50,972 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16469236] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:59:50,972 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736863784] [2022-07-19 21:59:50,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:50,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:50,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:59:50,997 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:59:51,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 21:59:51,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:51,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 2700 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 21:59:51,417 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:59:51,425 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 53 proven. 0 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2022-07-19 21:59:51,425 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:59:51,425 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736863784] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:59:51,425 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:59:51,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-19 21:59:51,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [618774362] [2022-07-19 21:59:51,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:59:51,426 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:59:51,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:59:51,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:59:51,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:59:51,427 INFO L87 Difference]: Start difference. First operand 164 states and 213 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 21:59:51,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:59:51,447 INFO L93 Difference]: Finished difference Result 297 states and 397 transitions. [2022-07-19 21:59:51,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:59:51,448 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 118 [2022-07-19 21:59:51,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:59:51,449 INFO L225 Difference]: With dead ends: 297 [2022-07-19 21:59:51,449 INFO L226 Difference]: Without dead ends: 173 [2022-07-19 21:59:51,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:59:51,470 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 20 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 499 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 21:59:51,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 499 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 21:59:51,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-07-19 21:59:51,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 156. [2022-07-19 21:59:51,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 106 states have (on average 1.1981132075471699) internal successors, (127), 107 states have internal predecessors, (127), 36 states have call successors, (36), 13 states have call predecessors, (36), 13 states have return successors, (40), 35 states have call predecessors, (40), 35 states have call successors, (40) [2022-07-19 21:59:51,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 203 transitions. [2022-07-19 21:59:51,478 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 203 transitions. Word has length 118 [2022-07-19 21:59:51,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:59:51,478 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 203 transitions. [2022-07-19 21:59:51,478 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 21:59:51,478 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 203 transitions. [2022-07-19 21:59:51,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-07-19 21:59:51,479 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:59:51,479 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:59:51,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 21:59:51,700 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:51,700 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:59:51,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:59:51,701 INFO L85 PathProgramCache]: Analyzing trace with hash 351906291, now seen corresponding path program 2 times [2022-07-19 21:59:51,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:59:51,701 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788255743] [2022-07-19 21:59:51,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:51,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:59:51,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:51,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:59:51,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:51,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:59:51,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:51,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:59:51,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:51,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:51,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:51,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:59:51,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:51,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 21:59:51,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:51,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 21:59:51,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:51,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 21:59:51,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:51,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 21:59:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:51,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 21:59:51,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:51,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 21:59:51,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:51,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 21:59:51,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:51,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 21:59:51,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:51,976 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-19 21:59:51,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:59:51,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788255743] [2022-07-19 21:59:51,976 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788255743] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:59:51,976 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848928664] [2022-07-19 21:59:51,977 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 21:59:51,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:51,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:59:51,999 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:59:52,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-19 21:59:52,590 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 21:59:52,591 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 21:59:52,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 40 conjunts are in the unsatisfiable core [2022-07-19 21:59:52,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:59:53,249 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 85 proven. 4 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-19 21:59:53,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:59:53,595 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-19 21:59:53,596 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 21:59:53,601 INFO L356 Elim1Store]: treesize reduction 14, result has 6.7 percent of original size [2022-07-19 21:59:53,601 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 21:59:53,631 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 44 proven. 10 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-19 21:59:53,631 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848928664] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:59:53,631 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:59:53,631 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 12, 11] total 26 [2022-07-19 21:59:53,632 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [222349642] [2022-07-19 21:59:53,632 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:59:53,632 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-19 21:59:53,632 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:59:53,633 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-19 21:59:53,633 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=572, Unknown=0, NotChecked=0, Total=650 [2022-07-19 21:59:53,635 INFO L87 Difference]: Start difference. First operand 156 states and 203 transitions. Second operand has 26 states, 25 states have (on average 4.36) internal successors, (109), 24 states have internal predecessors, (109), 4 states have call successors, (28), 4 states have call predecessors, (28), 7 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-19 21:59:55,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:59:55,529 INFO L93 Difference]: Finished difference Result 354 states and 476 transitions. [2022-07-19 21:59:55,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-19 21:59:55,530 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 4.36) internal successors, (109), 24 states have internal predecessors, (109), 4 states have call successors, (28), 4 states have call predecessors, (28), 7 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) Word has length 122 [2022-07-19 21:59:55,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:59:55,532 INFO L225 Difference]: With dead ends: 354 [2022-07-19 21:59:55,532 INFO L226 Difference]: Without dead ends: 230 [2022-07-19 21:59:55,533 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 316 GetRequests, 257 SyntacticMatches, 6 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 525 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=463, Invalid=2507, Unknown=0, NotChecked=0, Total=2970 [2022-07-19 21:59:55,533 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 271 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 2339 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 297 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 2645 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 2339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 223 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-07-19 21:59:55,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [297 Valid, 1050 Invalid, 2645 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 2339 Invalid, 0 Unknown, 223 Unchecked, 1.1s Time] [2022-07-19 21:59:55,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2022-07-19 21:59:55,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 196. [2022-07-19 21:59:55,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196 states, 140 states have (on average 1.207142857142857) internal successors, (169), 142 states have internal predecessors, (169), 39 states have call successors, (39), 15 states have call predecessors, (39), 16 states have return successors, (49), 38 states have call predecessors, (49), 38 states have call successors, (49) [2022-07-19 21:59:55,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 257 transitions. [2022-07-19 21:59:55,544 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 257 transitions. Word has length 122 [2022-07-19 21:59:55,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:59:55,544 INFO L495 AbstractCegarLoop]: Abstraction has 196 states and 257 transitions. [2022-07-19 21:59:55,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 4.36) internal successors, (109), 24 states have internal predecessors, (109), 4 states have call successors, (28), 4 states have call predecessors, (28), 7 states have return successors, (25), 4 states have call predecessors, (25), 4 states have call successors, (25) [2022-07-19 21:59:55,544 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 257 transitions. [2022-07-19 21:59:55,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 21:59:55,545 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:59:55,546 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:59:55,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-19 21:59:55,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:55,767 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:59:55,767 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:59:55,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1293675952, now seen corresponding path program 1 times [2022-07-19 21:59:55,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:59:55,768 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702401466] [2022-07-19 21:59:55,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:55,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:59:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:55,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:59:55,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:55,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:59:55,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:55,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:59:55,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:55,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:55,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:55,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:59:55,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:55,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:59:55,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:55,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 21:59:55,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:55,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 21:59:55,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:55,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 21:59:55,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:55,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 21:59:55,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:55,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 21:59:55,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:55,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 21:59:55,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:55,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-19 21:59:55,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:55,952 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2022-07-19 21:59:55,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:59:55,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702401466] [2022-07-19 21:59:55,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702401466] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:59:55,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [119329177] [2022-07-19 21:59:55,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:55,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:55,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:59:55,968 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:59:55,969 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-19 21:59:56,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:56,369 INFO L263 TraceCheckSpWp]: Trace formula consists of 2712 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 21:59:56,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:59:56,380 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 56 proven. 0 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2022-07-19 21:59:56,382 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:59:56,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [119329177] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:59:56,382 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:59:56,383 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-19 21:59:56,383 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831053874] [2022-07-19 21:59:56,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:59:56,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:59:56,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:59:56,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:59:56,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:59:56,387 INFO L87 Difference]: Start difference. First operand 196 states and 257 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 21:59:56,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:59:56,406 INFO L93 Difference]: Finished difference Result 373 states and 498 transitions. [2022-07-19 21:59:56,407 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:59:56,407 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2022-07-19 21:59:56,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:59:56,408 INFO L225 Difference]: With dead ends: 373 [2022-07-19 21:59:56,408 INFO L226 Difference]: Without dead ends: 207 [2022-07-19 21:59:56,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:59:56,409 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 9 mSDsluCounter, 326 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 492 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 21:59:56,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 492 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 21:59:56,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 207 states. [2022-07-19 21:59:56,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 207 to 198. [2022-07-19 21:59:56,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 142 states have (on average 1.1901408450704225) internal successors, (169), 144 states have internal predecessors, (169), 39 states have call successors, (39), 15 states have call predecessors, (39), 16 states have return successors, (49), 38 states have call predecessors, (49), 38 states have call successors, (49) [2022-07-19 21:59:56,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 257 transitions. [2022-07-19 21:59:56,427 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 257 transitions. Word has length 124 [2022-07-19 21:59:56,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:59:56,428 INFO L495 AbstractCegarLoop]: Abstraction has 198 states and 257 transitions. [2022-07-19 21:59:56,428 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 21:59:56,428 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 257 transitions. [2022-07-19 21:59:56,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 21:59:56,429 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:59:56,429 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:59:56,453 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-19 21:59:56,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:56,647 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:59:56,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:59:56,648 INFO L85 PathProgramCache]: Analyzing trace with hash 445434604, now seen corresponding path program 1 times [2022-07-19 21:59:56,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:59:56,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327728962] [2022-07-19 21:59:56,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:56,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:59:56,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:56,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:59:56,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:56,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:59:56,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:56,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:59:56,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:56,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:56,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:56,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:59:56,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:56,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:59:56,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:56,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 21:59:56,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:56,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 21:59:56,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:56,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 21:59:56,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:56,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 21:59:56,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:56,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 21:59:56,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:56,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 21:59:56,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:56,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-19 21:59:56,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:56,805 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 0 proven. 28 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-19 21:59:56,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:59:56,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327728962] [2022-07-19 21:59:56,806 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327728962] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:59:56,806 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1516023372] [2022-07-19 21:59:56,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:56,806 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:56,806 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:59:56,828 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:59:56,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-19 21:59:57,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:57,225 INFO L263 TraceCheckSpWp]: Trace formula consists of 2714 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 21:59:57,227 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:59:57,232 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 83 trivial. 0 not checked. [2022-07-19 21:59:57,233 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 21:59:57,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1516023372] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 21:59:57,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 21:59:57,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 5 [2022-07-19 21:59:57,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720053667] [2022-07-19 21:59:57,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 21:59:57,234 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 21:59:57,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:59:57,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 21:59:57,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-19 21:59:57,235 INFO L87 Difference]: Start difference. First operand 198 states and 257 transitions. Second operand has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 21:59:57,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 21:59:57,254 INFO L93 Difference]: Finished difference Result 380 states and 510 transitions. [2022-07-19 21:59:57,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 21:59:57,254 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 124 [2022-07-19 21:59:57,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 21:59:57,255 INFO L225 Difference]: With dead ends: 380 [2022-07-19 21:59:57,256 INFO L226 Difference]: Without dead ends: 212 [2022-07-19 21:59:57,256 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 151 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-19 21:59:57,257 INFO L413 NwaCegarLoop]: 166 mSDtfsCounter, 34 mSDsluCounter, 324 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 490 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 21:59:57,257 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 490 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 21:59:57,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2022-07-19 21:59:57,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 194. [2022-07-19 21:59:57,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 194 states, 138 states have (on average 1.1666666666666667) internal successors, (161), 140 states have internal predecessors, (161), 39 states have call successors, (39), 15 states have call predecessors, (39), 16 states have return successors, (49), 38 states have call predecessors, (49), 38 states have call successors, (49) [2022-07-19 21:59:57,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 194 states to 194 states and 249 transitions. [2022-07-19 21:59:57,269 INFO L78 Accepts]: Start accepts. Automaton has 194 states and 249 transitions. Word has length 124 [2022-07-19 21:59:57,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 21:59:57,269 INFO L495 AbstractCegarLoop]: Abstraction has 194 states and 249 transitions. [2022-07-19 21:59:57,269 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.75) internal successors, (59), 4 states have internal predecessors, (59), 2 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 21:59:57,269 INFO L276 IsEmpty]: Start isEmpty. Operand 194 states and 249 transitions. [2022-07-19 21:59:57,270 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 21:59:57,270 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 21:59:57,270 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 21:59:57,307 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 21:59:57,484 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,SelfDestructingSolverStorable10 [2022-07-19 21:59:57,485 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 21:59:57,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 21:59:57,485 INFO L85 PathProgramCache]: Analyzing trace with hash 416934314, now seen corresponding path program 2 times [2022-07-19 21:59:57,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 21:59:57,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987259679] [2022-07-19 21:59:57,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 21:59:57,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 21:59:57,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:57,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 21:59:57,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:57,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 21:59:57,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:57,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 21:59:57,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:57,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 21:59:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:57,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 21:59:57,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:57,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 21:59:57,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:57,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 21:59:57,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:57,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 21:59:57,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:57,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 21:59:57,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:57,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 21:59:57,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:57,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 21:59:57,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:57,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 21:59:57,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:57,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-19 21:59:57,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 21:59:57,953 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 44 proven. 8 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-19 21:59:57,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 21:59:57,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987259679] [2022-07-19 21:59:57,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987259679] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 21:59:57,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [287373294] [2022-07-19 21:59:57,954 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-19 21:59:57,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 21:59:57,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 21:59:57,955 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 21:59:57,956 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-19 21:59:58,477 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-19 21:59:58,477 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 21:59:58,487 INFO L263 TraceCheckSpWp]: Trace formula consists of 2709 conjuncts, 36 conjunts are in the unsatisfiable core [2022-07-19 21:59:58,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 21:59:58,933 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 83 proven. 6 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-19 21:59:58,934 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 21:59:59,178 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 28 treesize of output 16 [2022-07-19 21:59:59,253 INFO L356 Elim1Store]: treesize reduction 4, result has 63.6 percent of original size [2022-07-19 21:59:59,253 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 21:59:59,282 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 44 proven. 10 refuted. 0 times theorem prover too weak. 76 trivial. 0 not checked. [2022-07-19 21:59:59,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [287373294] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 21:59:59,282 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 21:59:59,282 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12, 11] total 25 [2022-07-19 21:59:59,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [7696560] [2022-07-19 21:59:59,283 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 21:59:59,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-19 21:59:59,283 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 21:59:59,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-19 21:59:59,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=505, Unknown=0, NotChecked=0, Total=600 [2022-07-19 21:59:59,284 INFO L87 Difference]: Start difference. First operand 194 states and 249 transitions. Second operand has 25 states, 25 states have (on average 4.2) internal successors, (105), 24 states have internal predecessors, (105), 3 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 22:00:00,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:00:00,692 INFO L93 Difference]: Finished difference Result 334 states and 430 transitions. [2022-07-19 22:00:00,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-19 22:00:00,693 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 25 states have (on average 4.2) internal successors, (105), 24 states have internal predecessors, (105), 3 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) Word has length 124 [2022-07-19 22:00:00,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:00:00,694 INFO L225 Difference]: With dead ends: 334 [2022-07-19 22:00:00,694 INFO L226 Difference]: Without dead ends: 249 [2022-07-19 22:00:00,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 303 GetRequests, 255 SyntacticMatches, 11 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 344 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=278, Invalid=1204, Unknown=0, NotChecked=0, Total=1482 [2022-07-19 22:00:00,695 INFO L413 NwaCegarLoop]: 162 mSDtfsCounter, 281 mSDsluCounter, 524 mSDsCounter, 0 mSdLazyCounter, 1353 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 301 SdHoareTripleChecker+Valid, 686 SdHoareTripleChecker+Invalid, 1796 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1353 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 364 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-19 22:00:00,695 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [301 Valid, 686 Invalid, 1796 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1353 Invalid, 0 Unknown, 364 Unchecked, 0.9s Time] [2022-07-19 22:00:00,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2022-07-19 22:00:00,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 229. [2022-07-19 22:00:00,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 167 states have (on average 1.1676646706586826) internal successors, (195), 170 states have internal predecessors, (195), 42 states have call successors, (42), 17 states have call predecessors, (42), 19 states have return successors, (59), 41 states have call predecessors, (59), 41 states have call successors, (59) [2022-07-19 22:00:00,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 296 transitions. [2022-07-19 22:00:00,704 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 296 transitions. Word has length 124 [2022-07-19 22:00:00,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:00:00,704 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 296 transitions. [2022-07-19 22:00:00,704 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 4.2) internal successors, (105), 24 states have internal predecessors, (105), 3 states have call successors, (19), 4 states have call predecessors, (19), 5 states have return successors, (16), 3 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-19 22:00:00,705 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 296 transitions. [2022-07-19 22:00:00,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 22:00:00,705 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:00:00,705 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-19 22:00:00,761 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 22:00:00,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:00,906 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:00:00,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:00:00,907 INFO L85 PathProgramCache]: Analyzing trace with hash -1429579026, now seen corresponding path program 1 times [2022-07-19 22:00:00,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:00:00,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065655255] [2022-07-19 22:00:00,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:00,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:01,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:00:01,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:00:01,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:00:01,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:01,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:00:01,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:00:01,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:00:01,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,190 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 22:00:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:00:01,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 22:00:01,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 22:00:01,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 22:00:01,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-19 22:00:01,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,397 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 44 proven. 8 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-19 22:00:01,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:01,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065655255] [2022-07-19 22:00:01,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065655255] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:00:01,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120591064] [2022-07-19 22:00:01,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:01,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:01,398 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:00:01,404 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 22:00:01,433 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 22:00:01,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:01,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 2711 conjuncts, 61 conjunts are in the unsatisfiable core [2022-07-19 22:00:01,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:00:01,892 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 22:00:02,066 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:00:02,068 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 20 treesize of output 19 [2022-07-19 22:00:02,268 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 22:00:02,270 INFO L356 Elim1Store]: treesize reduction 19, result has 5.0 percent of original size [2022-07-19 22:00:02,270 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 1 [2022-07-19 22:00:02,274 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 102 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2022-07-19 22:00:02,274 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:00:02,274 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120591064] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:00:02,274 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:00:02,274 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [12] total 23 [2022-07-19 22:00:02,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675505360] [2022-07-19 22:00:02,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:00:02,275 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-19 22:00:02,275 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:02,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-19 22:00:02,276 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=445, Unknown=0, NotChecked=0, Total=506 [2022-07-19 22:00:02,276 INFO L87 Difference]: Start difference. First operand 229 states and 296 transitions. Second operand has 13 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 6 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-07-19 22:00:02,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:00:02,426 INFO L93 Difference]: Finished difference Result 508 states and 663 transitions. [2022-07-19 22:00:02,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 22:00:02,427 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 6 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 124 [2022-07-19 22:00:02,427 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:00:02,428 INFO L225 Difference]: With dead ends: 508 [2022-07-19 22:00:02,428 INFO L226 Difference]: Without dead ends: 311 [2022-07-19 22:00:02,429 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 135 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=73, Invalid=527, Unknown=0, NotChecked=0, Total=600 [2022-07-19 22:00:02,429 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 44 mSDsluCounter, 1523 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 1716 SdHoareTripleChecker+Invalid, 290 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 147 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 22:00:02,430 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 1716 Invalid, 290 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 139 Invalid, 0 Unknown, 147 Unchecked, 0.1s Time] [2022-07-19 22:00:02,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2022-07-19 22:00:02,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 267. [2022-07-19 22:00:02,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 200 states have (on average 1.17) internal successors, (234), 204 states have internal predecessors, (234), 44 states have call successors, (44), 19 states have call predecessors, (44), 22 states have return successors, (64), 43 states have call predecessors, (64), 43 states have call successors, (64) [2022-07-19 22:00:02,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 342 transitions. [2022-07-19 22:00:02,440 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 342 transitions. Word has length 124 [2022-07-19 22:00:02,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:00:02,441 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 342 transitions. [2022-07-19 22:00:02,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 6 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-07-19 22:00:02,441 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 342 transitions. [2022-07-19 22:00:02,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 22:00:02,442 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:00:02,442 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-19 22:00:02,462 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 22:00:02,655 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,SelfDestructingSolverStorable12 [2022-07-19 22:00:02,655 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:00:02,656 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:00:02,656 INFO L85 PathProgramCache]: Analyzing trace with hash 906813484, now seen corresponding path program 1 times [2022-07-19 22:00:02,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:00:02,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600269750] [2022-07-19 22:00:02,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:02,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:02,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:02,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:00:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:02,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:00:02,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:02,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:00:02,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:02,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:02,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:02,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:00:02,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:03,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:00:03,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:03,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:00:03,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:03,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 22:00:03,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:03,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:00:03,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:03,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 22:00:03,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:03,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 22:00:03,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:03,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 22:00:03,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:03,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-19 22:00:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:03,178 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 2 proven. 50 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-19 22:00:03,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:03,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600269750] [2022-07-19 22:00:03,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600269750] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:00:03,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1420021089] [2022-07-19 22:00:03,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:03,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:03,179 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:00:03,180 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 22:00:03,181 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 22:00:03,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:03,565 INFO L263 TraceCheckSpWp]: Trace formula consists of 2716 conjuncts, 49 conjunts are in the unsatisfiable core [2022-07-19 22:00:03,569 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:00:03,690 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 22:00:03,695 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 22:00:04,093 INFO L356 Elim1Store]: treesize reduction 13, result has 7.1 percent of original size [2022-07-19 22:00:04,094 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 29 treesize of output 11 [2022-07-19 22:00:04,096 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 18 treesize of output 10 [2022-07-19 22:00:04,134 INFO L134 CoverageAnalysis]: Checked inductivity of 130 backedges. 81 proven. 0 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2022-07-19 22:00:04,135 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 22:00:04,135 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1420021089] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:00:04,135 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 22:00:04,135 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [16] total 29 [2022-07-19 22:00:04,135 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [236585920] [2022-07-19 22:00:04,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:00:04,136 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-19 22:00:04,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:04,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-19 22:00:04,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=723, Unknown=0, NotChecked=0, Total=812 [2022-07-19 22:00:04,137 INFO L87 Difference]: Start difference. First operand 267 states and 342 transitions. Second operand has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 11 states have internal predecessors, (70), 6 states have call successors, (15), 4 states have call predecessors, (15), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-07-19 22:00:04,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:00:04,500 INFO L93 Difference]: Finished difference Result 521 states and 679 transitions. [2022-07-19 22:00:04,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 22:00:04,501 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 11 states have internal predecessors, (70), 6 states have call successors, (15), 4 states have call predecessors, (15), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) Word has length 124 [2022-07-19 22:00:04,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:00:04,502 INFO L225 Difference]: With dead ends: 521 [2022-07-19 22:00:04,502 INFO L226 Difference]: Without dead ends: 319 [2022-07-19 22:00:04,503 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 228 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=121, Invalid=935, Unknown=0, NotChecked=0, Total=1056 [2022-07-19 22:00:04,503 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 208 mSDsluCounter, 778 mSDsCounter, 0 mSdLazyCounter, 392 mSolverCounterSat, 69 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 954 SdHoareTripleChecker+Invalid, 1043 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 69 IncrementalHoareTripleChecker+Valid, 392 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 582 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 22:00:04,503 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 954 Invalid, 1043 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [69 Valid, 392 Invalid, 0 Unknown, 582 Unchecked, 0.3s Time] [2022-07-19 22:00:04,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2022-07-19 22:00:04,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 285. [2022-07-19 22:00:04,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 216 states have (on average 1.1574074074074074) internal successors, (250), 221 states have internal predecessors, (250), 44 states have call successors, (44), 20 states have call predecessors, (44), 24 states have return successors, (64), 43 states have call predecessors, (64), 43 states have call successors, (64) [2022-07-19 22:00:04,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 358 transitions. [2022-07-19 22:00:04,515 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 358 transitions. Word has length 124 [2022-07-19 22:00:04,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:00:04,515 INFO L495 AbstractCegarLoop]: Abstraction has 285 states and 358 transitions. [2022-07-19 22:00:04,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 4.666666666666667) internal successors, (70), 11 states have internal predecessors, (70), 6 states have call successors, (15), 4 states have call predecessors, (15), 5 states have return successors, (13), 6 states have call predecessors, (13), 6 states have call successors, (13) [2022-07-19 22:00:04,515 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 358 transitions. [2022-07-19 22:00:04,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-19 22:00:04,517 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:00:04,517 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:00:04,553 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 22:00:04,737 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,SelfDestructingSolverStorable13 [2022-07-19 22:00:04,737 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:00:04,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:00:04,738 INFO L85 PathProgramCache]: Analyzing trace with hash -637961624, now seen corresponding path program 3 times [2022-07-19 22:00:04,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:00:04,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35027227] [2022-07-19 22:00:04,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:04,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:04,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:04,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:00:04,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:04,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:00:04,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:04,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:00:04,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:04,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:04,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:04,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:00:04,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:04,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:00:04,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:04,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:00:04,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:04,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 22:00:04,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:04,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 22:00:04,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:04,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 22:00:04,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:04,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 22:00:04,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:04,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 22:00:04,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:04,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 22:00:04,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:04,983 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 14 proven. 15 refuted. 0 times theorem prover too weak. 109 trivial. 0 not checked. [2022-07-19 22:00:04,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:04,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35027227] [2022-07-19 22:00:04,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35027227] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:00:04,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [159586117] [2022-07-19 22:00:04,983 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-19 22:00:04,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:04,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:00:04,985 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 22:00:04,986 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 22:00:05,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2022-07-19 22:00:05,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-19 22:00:05,731 INFO L263 TraceCheckSpWp]: Trace formula consists of 2425 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-19 22:00:05,734 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:00:06,140 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 85 proven. 8 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-19 22:00:06,140 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:00:06,355 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-19 22:00:06,355 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 22:00:06,381 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 48 proven. 10 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-07-19 22:00:06,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [159586117] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:00:06,381 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 22:00:06,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 9] total 23 [2022-07-19 22:00:06,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [802545510] [2022-07-19 22:00:06,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 22:00:06,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-19 22:00:06,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:06,382 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-19 22:00:06,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=434, Unknown=0, NotChecked=0, Total=506 [2022-07-19 22:00:06,383 INFO L87 Difference]: Start difference. First operand 285 states and 358 transitions. Second operand has 23 states, 22 states have (on average 5.045454545454546) internal successors, (111), 21 states have internal predecessors, (111), 4 states have call successors, (26), 4 states have call predecessors, (26), 7 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-19 22:00:07,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:00:07,900 INFO L93 Difference]: Finished difference Result 483 states and 626 transitions. [2022-07-19 22:00:07,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-19 22:00:07,900 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 5.045454545454546) internal successors, (111), 21 states have internal predecessors, (111), 4 states have call successors, (26), 4 states have call predecessors, (26), 7 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) Word has length 128 [2022-07-19 22:00:07,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:00:07,902 INFO L225 Difference]: With dead ends: 483 [2022-07-19 22:00:07,902 INFO L226 Difference]: Without dead ends: 271 [2022-07-19 22:00:07,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 266 SyntacticMatches, 6 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=299, Invalid=1593, Unknown=0, NotChecked=0, Total=1892 [2022-07-19 22:00:07,903 INFO L413 NwaCegarLoop]: 146 mSDtfsCounter, 206 mSDsluCounter, 755 mSDsCounter, 0 mSdLazyCounter, 1857 mSolverCounterSat, 68 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 901 SdHoareTripleChecker+Invalid, 2091 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 68 IncrementalHoareTripleChecker+Valid, 1857 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 166 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:00:07,903 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 901 Invalid, 2091 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [68 Valid, 1857 Invalid, 0 Unknown, 166 Unchecked, 1.0s Time] [2022-07-19 22:00:07,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2022-07-19 22:00:07,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 264. [2022-07-19 22:00:07,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 193 states have (on average 1.1243523316062176) internal successors, (217), 195 states have internal predecessors, (217), 47 states have call successors, (47), 22 states have call predecessors, (47), 23 states have return successors, (68), 46 states have call predecessors, (68), 46 states have call successors, (68) [2022-07-19 22:00:07,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 332 transitions. [2022-07-19 22:00:07,917 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 332 transitions. Word has length 128 [2022-07-19 22:00:07,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:00:07,918 INFO L495 AbstractCegarLoop]: Abstraction has 264 states and 332 transitions. [2022-07-19 22:00:07,918 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 5.045454545454546) internal successors, (111), 21 states have internal predecessors, (111), 4 states have call successors, (26), 4 states have call predecessors, (26), 7 states have return successors, (23), 4 states have call predecessors, (23), 4 states have call successors, (23) [2022-07-19 22:00:07,918 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 332 transitions. [2022-07-19 22:00:07,921 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-19 22:00:07,922 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:00:07,922 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:00:07,945 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 22:00:08,143 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,SelfDestructingSolverStorable14 [2022-07-19 22:00:08,143 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:00:08,143 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:00:08,143 INFO L85 PathProgramCache]: Analyzing trace with hash 1935170269, now seen corresponding path program 1 times [2022-07-19 22:00:08,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:00:08,143 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145395818] [2022-07-19 22:00:08,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:08,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:08,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:08,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:00:08,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:08,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:00:08,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:08,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:00:08,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:08,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:08,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:08,310 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:00:08,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:08,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:00:08,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:08,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:00:08,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:08,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:00:08,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:08,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:00:08,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:08,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 22:00:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:08,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 22:00:08,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:08,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-19 22:00:08,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:08,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 22:00:08,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:08,394 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 22 proven. 8 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-07-19 22:00:08,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:08,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145395818] [2022-07-19 22:00:08,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145395818] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:00:08,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1730088053] [2022-07-19 22:00:08,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:08,395 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:08,395 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:00:08,396 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 22:00:08,398 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 22:00:08,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:08,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 2730 conjuncts, 64 conjunts are in the unsatisfiable core [2022-07-19 22:00:08,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:00:08,861 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 22:00:09,050 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:00:09,051 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 22 treesize of output 21 [2022-07-19 22:00:09,282 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:00:09,283 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 22 treesize of output 21 [2022-07-19 22:00:09,854 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 64 proven. 43 refuted. 0 times theorem prover too weak. 45 trivial. 0 not checked. [2022-07-19 22:00:09,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:00:11,464 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1730088053] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:00:11,464 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 22:00:11,464 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 17] total 25 [2022-07-19 22:00:11,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900718618] [2022-07-19 22:00:11,465 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 22:00:11,465 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-19 22:00:11,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:11,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-19 22:00:11,466 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=899, Unknown=1, NotChecked=0, Total=992 [2022-07-19 22:00:11,466 INFO L87 Difference]: Start difference. First operand 264 states and 332 transitions. Second operand has 25 states, 23 states have (on average 5.739130434782608) internal successors, (132), 22 states have internal predecessors, (132), 9 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (25), 8 states have call predecessors, (25), 8 states have call successors, (25) [2022-07-19 22:00:13,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:00:13,201 INFO L93 Difference]: Finished difference Result 548 states and 702 transitions. [2022-07-19 22:00:13,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2022-07-19 22:00:13,202 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 23 states have (on average 5.739130434782608) internal successors, (132), 22 states have internal predecessors, (132), 9 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (25), 8 states have call predecessors, (25), 8 states have call successors, (25) Word has length 134 [2022-07-19 22:00:13,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:00:13,203 INFO L225 Difference]: With dead ends: 548 [2022-07-19 22:00:13,203 INFO L226 Difference]: Without dead ends: 348 [2022-07-19 22:00:13,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 260 GetRequests, 181 SyntacticMatches, 14 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1090 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=374, Invalid=4047, Unknown=1, NotChecked=0, Total=4422 [2022-07-19 22:00:13,205 INFO L413 NwaCegarLoop]: 200 mSDtfsCounter, 145 mSDsluCounter, 1336 mSDsCounter, 0 mSdLazyCounter, 2175 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 175 SdHoareTripleChecker+Valid, 1536 SdHoareTripleChecker+Invalid, 3030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 2175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 789 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-19 22:00:13,205 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [175 Valid, 1536 Invalid, 3030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 2175 Invalid, 0 Unknown, 789 Unchecked, 1.0s Time] [2022-07-19 22:00:13,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 348 states. [2022-07-19 22:00:13,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 348 to 290. [2022-07-19 22:00:13,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 212 states have (on average 1.1273584905660377) internal successors, (239), 216 states have internal predecessors, (239), 51 states have call successors, (51), 24 states have call predecessors, (51), 26 states have return successors, (65), 49 states have call predecessors, (65), 50 states have call successors, (65) [2022-07-19 22:00:13,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 355 transitions. [2022-07-19 22:00:13,234 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 355 transitions. Word has length 134 [2022-07-19 22:00:13,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:00:13,234 INFO L495 AbstractCegarLoop]: Abstraction has 290 states and 355 transitions. [2022-07-19 22:00:13,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 23 states have (on average 5.739130434782608) internal successors, (132), 22 states have internal predecessors, (132), 9 states have call successors, (28), 5 states have call predecessors, (28), 6 states have return successors, (25), 8 states have call predecessors, (25), 8 states have call successors, (25) [2022-07-19 22:00:13,235 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 355 transitions. [2022-07-19 22:00:13,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-19 22:00:13,236 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:00:13,236 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-19 22:00:13,258 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 22:00:13,449 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,SelfDestructingSolverStorable15 [2022-07-19 22:00:13,449 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:00:13,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:00:13,449 INFO L85 PathProgramCache]: Analyzing trace with hash 311540546, now seen corresponding path program 1 times [2022-07-19 22:00:13,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:00:13,449 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161335010] [2022-07-19 22:00:13,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:13,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:13,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:00:13,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:00:13,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:00:13,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:13,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:00:13,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:00:13,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:00:13,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:00:13,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:00:13,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 22:00:13,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:13,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:00:13,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 22:00:13,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:00:13,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 22:00:13,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:13,638 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-07-19 22:00:13,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:13,639 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161335010] [2022-07-19 22:00:13,639 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161335010] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:00:13,639 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:00:13,639 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 22:00:13,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1913072203] [2022-07-19 22:00:13,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:00:13,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 22:00:13,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:13,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 22:00:13,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 22:00:13,641 INFO L87 Difference]: Start difference. First operand 290 states and 355 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-19 22:00:13,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:00:13,946 INFO L93 Difference]: Finished difference Result 367 states and 453 transitions. [2022-07-19 22:00:13,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 22:00:13,947 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 137 [2022-07-19 22:00:13,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:00:13,948 INFO L225 Difference]: With dead ends: 367 [2022-07-19 22:00:13,948 INFO L226 Difference]: Without dead ends: 318 [2022-07-19 22:00:13,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-19 22:00:13,949 INFO L413 NwaCegarLoop]: 144 mSDtfsCounter, 140 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 611 mSolverCounterSat, 112 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 148 SdHoareTripleChecker+Valid, 395 SdHoareTripleChecker+Invalid, 723 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 112 IncrementalHoareTripleChecker+Valid, 611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 22:00:13,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [148 Valid, 395 Invalid, 723 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [112 Valid, 611 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 22:00:13,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2022-07-19 22:00:13,960 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 295. [2022-07-19 22:00:13,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 216 states have (on average 1.125) internal successors, (243), 220 states have internal predecessors, (243), 51 states have call successors, (51), 24 states have call predecessors, (51), 27 states have return successors, (67), 50 states have call predecessors, (67), 50 states have call successors, (67) [2022-07-19 22:00:13,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 361 transitions. [2022-07-19 22:00:13,968 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 361 transitions. Word has length 137 [2022-07-19 22:00:13,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:00:13,968 INFO L495 AbstractCegarLoop]: Abstraction has 295 states and 361 transitions. [2022-07-19 22:00:13,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 5 states have internal predecessors, (59), 2 states have call successors, (16), 4 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-19 22:00:13,968 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 361 transitions. [2022-07-19 22:00:13,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-19 22:00:13,969 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:00:13,969 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:00:13,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 22:00:13,970 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:00:13,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:00:13,970 INFO L85 PathProgramCache]: Analyzing trace with hash -2001620082, now seen corresponding path program 1 times [2022-07-19 22:00:13,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:00:13,970 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391138541] [2022-07-19 22:00:13,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:13,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:14,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:00:14,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:00:14,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:00:14,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:14,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:00:14,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:00:14,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:00:14,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:00:14,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:00:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 22:00:14,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 22:00:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 22:00:14,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-19 22:00:14,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,414 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 60 proven. 7 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-07-19 22:00:14,414 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:14,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391138541] [2022-07-19 22:00:14,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391138541] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:00:14,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [522171939] [2022-07-19 22:00:14,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:14,415 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:14,415 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:00:14,428 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 22:00:14,452 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 22:00:14,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:14,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 2729 conjuncts, 80 conjunts are in the unsatisfiable core [2022-07-19 22:00:14,891 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:00:15,074 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:00:15,075 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 26 treesize of output 30 [2022-07-19 22:00:15,140 INFO L356 Elim1Store]: treesize reduction 13, result has 45.8 percent of original size [2022-07-19 22:00:15,141 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 35 treesize of output 34 [2022-07-19 22:00:15,748 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 79 proven. 34 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-19 22:00:15,748 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:00:16,444 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 60 proven. 14 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-19 22:00:16,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [522171939] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:00:16,444 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 22:00:16,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 18, 11] total 34 [2022-07-19 22:00:16,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480315386] [2022-07-19 22:00:16,445 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 22:00:16,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-07-19 22:00:16,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:16,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-07-19 22:00:16,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=122, Invalid=1000, Unknown=0, NotChecked=0, Total=1122 [2022-07-19 22:00:16,446 INFO L87 Difference]: Start difference. First operand 295 states and 361 transitions. Second operand has 34 states, 32 states have (on average 4.40625) internal successors, (141), 32 states have internal predecessors, (141), 10 states have call successors, (32), 5 states have call predecessors, (32), 7 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) [2022-07-19 22:00:19,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:00:19,214 INFO L93 Difference]: Finished difference Result 480 states and 607 transitions. [2022-07-19 22:00:19,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-07-19 22:00:19,215 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 32 states have (on average 4.40625) internal successors, (141), 32 states have internal predecessors, (141), 10 states have call successors, (32), 5 states have call predecessors, (32), 7 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) Word has length 136 [2022-07-19 22:00:19,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:00:19,217 INFO L225 Difference]: With dead ends: 480 [2022-07-19 22:00:19,217 INFO L226 Difference]: Without dead ends: 396 [2022-07-19 22:00:19,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 343 GetRequests, 273 SyntacticMatches, 10 SemanticMatches, 60 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1002 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=436, Invalid=3346, Unknown=0, NotChecked=0, Total=3782 [2022-07-19 22:00:19,218 INFO L413 NwaCegarLoop]: 171 mSDtfsCounter, 254 mSDsluCounter, 675 mSDsCounter, 0 mSdLazyCounter, 2912 mSolverCounterSat, 172 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 846 SdHoareTripleChecker+Invalid, 3635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 172 IncrementalHoareTripleChecker+Valid, 2912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 551 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-19 22:00:19,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 846 Invalid, 3635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [172 Valid, 2912 Invalid, 0 Unknown, 551 Unchecked, 1.9s Time] [2022-07-19 22:00:19,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2022-07-19 22:00:19,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 350. [2022-07-19 22:00:19,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 350 states, 263 states have (on average 1.1254752851711027) internal successors, (296), 268 states have internal predecessors, (296), 54 states have call successors, (54), 28 states have call predecessors, (54), 32 states have return successors, (75), 53 states have call predecessors, (75), 53 states have call successors, (75) [2022-07-19 22:00:19,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 350 states to 350 states and 425 transitions. [2022-07-19 22:00:19,239 INFO L78 Accepts]: Start accepts. Automaton has 350 states and 425 transitions. Word has length 136 [2022-07-19 22:00:19,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:00:19,239 INFO L495 AbstractCegarLoop]: Abstraction has 350 states and 425 transitions. [2022-07-19 22:00:19,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 32 states have (on average 4.40625) internal successors, (141), 32 states have internal predecessors, (141), 10 states have call successors, (32), 5 states have call predecessors, (32), 7 states have return successors, (29), 8 states have call predecessors, (29), 8 states have call successors, (29) [2022-07-19 22:00:19,239 INFO L276 IsEmpty]: Start isEmpty. Operand 350 states and 425 transitions. [2022-07-19 22:00:19,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-19 22:00:19,241 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:00:19,241 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:00:19,266 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2022-07-19 22:00:19,455 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:19,455 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:00:19,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:00:19,455 INFO L85 PathProgramCache]: Analyzing trace with hash 1625304456, now seen corresponding path program 1 times [2022-07-19 22:00:19,455 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:00:19,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [644166164] [2022-07-19 22:00:19,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:19,456 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:19,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:19,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:00:19,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:19,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:00:19,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:19,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:00:19,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:19,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:19,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:19,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:00:19,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:19,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:00:19,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:19,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:00:19,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:19,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:00:19,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:19,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:00:19,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:19,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 22:00:19,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:19,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 22:00:19,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:19,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 22:00:19,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:19,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-19 22:00:19,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:19,962 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 16 proven. 51 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-07-19 22:00:19,962 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:19,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [644166164] [2022-07-19 22:00:19,962 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [644166164] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:00:19,962 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492466171] [2022-07-19 22:00:19,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:19,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:19,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:00:19,964 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 22:00:19,966 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 22:00:20,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:20,414 INFO L263 TraceCheckSpWp]: Trace formula consists of 2742 conjuncts, 65 conjunts are in the unsatisfiable core [2022-07-19 22:00:20,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:00:20,453 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 22:00:22,693 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:00:22,693 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 22:00:22,753 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:00:22,754 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 27 [2022-07-19 22:00:29,291 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 68 proven. 50 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-19 22:00:29,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:00:29,659 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 60 proven. 14 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2022-07-19 22:00:29,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492466171] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:00:29,660 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 22:00:29,660 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19, 9] total 40 [2022-07-19 22:00:29,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277678895] [2022-07-19 22:00:29,660 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 22:00:29,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2022-07-19 22:00:29,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:29,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2022-07-19 22:00:29,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=125, Invalid=1434, Unknown=1, NotChecked=0, Total=1560 [2022-07-19 22:00:29,661 INFO L87 Difference]: Start difference. First operand 350 states and 425 transitions. Second operand has 40 states, 36 states have (on average 4.666666666666667) internal successors, (168), 37 states have internal predecessors, (168), 17 states have call successors, (42), 6 states have call predecessors, (42), 8 states have return successors, (38), 13 states have call predecessors, (38), 15 states have call successors, (38) [2022-07-19 22:00:34,015 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:00:34,016 INFO L93 Difference]: Finished difference Result 674 states and 858 transitions. [2022-07-19 22:00:34,020 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-07-19 22:00:34,020 INFO L78 Accepts]: Start accepts. Automaton has has 40 states, 36 states have (on average 4.666666666666667) internal successors, (168), 37 states have internal predecessors, (168), 17 states have call successors, (42), 6 states have call predecessors, (42), 8 states have return successors, (38), 13 states have call predecessors, (38), 15 states have call successors, (38) Word has length 136 [2022-07-19 22:00:34,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:00:34,022 INFO L225 Difference]: With dead ends: 674 [2022-07-19 22:00:34,023 INFO L226 Difference]: Without dead ends: 436 [2022-07-19 22:00:34,025 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 382 GetRequests, 287 SyntacticMatches, 8 SemanticMatches, 87 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2047 ImplicationChecksByTransitivity, 10.4s TimeCoverageRelationStatistics Valid=753, Invalid=7078, Unknown=1, NotChecked=0, Total=7832 [2022-07-19 22:00:34,025 INFO L413 NwaCegarLoop]: 197 mSDtfsCounter, 581 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 4896 mSolverCounterSat, 432 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 588 SdHoareTripleChecker+Valid, 1114 SdHoareTripleChecker+Invalid, 6743 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 432 IncrementalHoareTripleChecker+Valid, 4896 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1415 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-19 22:00:34,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [588 Valid, 1114 Invalid, 6743 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [432 Valid, 4896 Invalid, 0 Unknown, 1415 Unchecked, 2.8s Time] [2022-07-19 22:00:34,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 436 states. [2022-07-19 22:00:34,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 436 to 368. [2022-07-19 22:00:34,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 277 states have (on average 1.1046931407942238) internal successors, (306), 280 states have internal predecessors, (306), 56 states have call successors, (56), 30 states have call predecessors, (56), 34 states have return successors, (74), 57 states have call predecessors, (74), 55 states have call successors, (74) [2022-07-19 22:00:34,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 436 transitions. [2022-07-19 22:00:34,043 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 436 transitions. Word has length 136 [2022-07-19 22:00:34,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:00:34,044 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 436 transitions. [2022-07-19 22:00:34,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 40 states, 36 states have (on average 4.666666666666667) internal successors, (168), 37 states have internal predecessors, (168), 17 states have call successors, (42), 6 states have call predecessors, (42), 8 states have return successors, (38), 13 states have call predecessors, (38), 15 states have call successors, (38) [2022-07-19 22:00:34,044 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 436 transitions. [2022-07-19 22:00:34,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-19 22:00:34,045 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:00:34,045 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:00:34,068 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 22:00:34,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:34,260 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:00:34,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:00:34,260 INFO L85 PathProgramCache]: Analyzing trace with hash -911833216, now seen corresponding path program 1 times [2022-07-19 22:00:34,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:00:34,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907916869] [2022-07-19 22:00:34,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:34,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:34,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:00:34,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:00:34,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:00:34,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:34,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:00:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:00:34,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:00:34,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 22:00:34,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 22:00:34,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 22:00:34,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 22:00:34,421 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 103 [2022-07-19 22:00:34,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [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 117 [2022-07-19 22:00:34,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:34,459 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 35 proven. 0 refuted. 0 times theorem prover too weak. 129 trivial. 0 not checked. [2022-07-19 22:00:34,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:34,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907916869] [2022-07-19 22:00:34,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907916869] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:00:34,459 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:00:34,459 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 22:00:34,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1112438673] [2022-07-19 22:00:34,460 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:00:34,460 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 22:00:34,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:34,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 22:00:34,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 22:00:34,461 INFO L87 Difference]: Start difference. First operand 368 states and 436 transitions. Second operand has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-19 22:00:34,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:00:34,812 INFO L93 Difference]: Finished difference Result 466 states and 557 transitions. [2022-07-19 22:00:34,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 22:00:34,812 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) Word has length 137 [2022-07-19 22:00:34,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:00:34,814 INFO L225 Difference]: With dead ends: 466 [2022-07-19 22:00:34,814 INFO L226 Difference]: Without dead ends: 364 [2022-07-19 22:00:34,815 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-19 22:00:34,815 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 85 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 403 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 100 SdHoareTripleChecker+Valid, 332 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 403 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 22:00:34,815 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [100 Valid, 332 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 403 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 22:00:34,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2022-07-19 22:00:34,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 359. [2022-07-19 22:00:34,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 269 states have (on average 1.096654275092937) internal successors, (295), 271 states have internal predecessors, (295), 56 states have call successors, (56), 30 states have call predecessors, (56), 33 states have return successors, (73), 57 states have call predecessors, (73), 55 states have call successors, (73) [2022-07-19 22:00:34,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 424 transitions. [2022-07-19 22:00:34,830 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 424 transitions. Word has length 137 [2022-07-19 22:00:34,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:00:34,831 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 424 transitions. [2022-07-19 22:00:34,831 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.0) internal successors, (66), 5 states have internal predecessors, (66), 2 states have call successors, (16), 3 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 1 states have call successors, (14) [2022-07-19 22:00:34,831 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 424 transitions. [2022-07-19 22:00:34,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-19 22:00:34,832 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:00:34,832 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:00:34,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 22:00:34,832 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:00:34,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:00:34,833 INFO L85 PathProgramCache]: Analyzing trace with hash -746351932, now seen corresponding path program 1 times [2022-07-19 22:00:34,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:00:34,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1298002248] [2022-07-19 22:00:34,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:34,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:34,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:35,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:00:35,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:35,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:00:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:35,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:00:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:35,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:35,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:35,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:00:35,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:35,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:00:35,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:35,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:00:35,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:35,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 22:00:35,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:35,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 22:00:35,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:35,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 22:00:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:35,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 22:00:35,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:35,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-19 22:00:35,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:35,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 22:00:35,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:35,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2022-07-19 22:00:35,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:35,358 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 26 proven. 32 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-19 22:00:35,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:35,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1298002248] [2022-07-19 22:00:35,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1298002248] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:00:35,358 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [749289748] [2022-07-19 22:00:35,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:35,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:35,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:00:35,388 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 22:00:35,438 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 22:00:35,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:35,865 INFO L263 TraceCheckSpWp]: Trace formula consists of 2775 conjuncts, 136 conjunts are in the unsatisfiable core [2022-07-19 22:00:35,873 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:00:35,953 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 22:00:35,955 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-19 22:00:41,316 INFO L356 Elim1Store]: treesize reduction 20, result has 57.4 percent of original size [2022-07-19 22:00:41,316 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 32 treesize of output 51 [2022-07-19 22:00:41,330 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 20 treesize of output 12 [2022-07-19 22:00:41,343 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 13 treesize of output 9 [2022-07-19 22:00:41,350 INFO L356 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2022-07-19 22:00:41,350 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 20 treesize of output 8 [2022-07-19 22:00:41,361 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:00:41,362 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 24 treesize of output 23 [2022-07-19 22:00:43,506 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:00:43,506 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 27 [2022-07-19 22:00:43,510 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:00:43,511 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 24 treesize of output 23 [2022-07-19 22:00:43,553 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:00:43,553 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 22:00:43,562 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 22:00:43,805 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 9 treesize of output 3 [2022-07-19 22:00:44,040 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:00:44,040 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 23 treesize of output 22 [2022-07-19 22:00:45,422 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 60 proven. 96 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-07-19 22:00:45,423 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:00:46,163 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 50 proven. 14 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2022-07-19 22:00:46,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [749289748] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:00:46,163 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 22:00:46,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 41, 11] total 65 [2022-07-19 22:00:46,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892742055] [2022-07-19 22:00:46,164 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 22:00:46,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-07-19 22:00:46,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:46,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-07-19 22:00:46,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=263, Invalid=3894, Unknown=3, NotChecked=0, Total=4160 [2022-07-19 22:00:46,166 INFO L87 Difference]: Start difference. First operand 359 states and 424 transitions. Second operand has 65 states, 58 states have (on average 3.7758620689655173) internal successors, (219), 59 states have internal predecessors, (219), 21 states have call successors, (45), 10 states have call predecessors, (45), 15 states have return successors, (41), 14 states have call predecessors, (41), 19 states have call successors, (41) [2022-07-19 22:00:57,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:00:57,419 INFO L93 Difference]: Finished difference Result 606 states and 739 transitions. [2022-07-19 22:00:57,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 56 states. [2022-07-19 22:00:57,420 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 58 states have (on average 3.7758620689655173) internal successors, (219), 59 states have internal predecessors, (219), 21 states have call successors, (45), 10 states have call predecessors, (45), 15 states have return successors, (41), 14 states have call predecessors, (41), 19 states have call successors, (41) Word has length 137 [2022-07-19 22:00:57,421 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:00:57,422 INFO L225 Difference]: With dead ends: 606 [2022-07-19 22:00:57,422 INFO L226 Difference]: Without dead ends: 407 [2022-07-19 22:00:57,425 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 256 SyntacticMatches, 14 SemanticMatches, 110 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4405 ImplicationChecksByTransitivity, 17.8s TimeCoverageRelationStatistics Valid=777, Invalid=11649, Unknown=6, NotChecked=0, Total=12432 [2022-07-19 22:00:57,425 INFO L413 NwaCegarLoop]: 145 mSDtfsCounter, 306 mSDsluCounter, 1580 mSDsCounter, 0 mSdLazyCounter, 5001 mSolverCounterSat, 281 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 1725 SdHoareTripleChecker+Invalid, 7471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 281 IncrementalHoareTripleChecker+Valid, 5001 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2189 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-19 22:00:57,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 1725 Invalid, 7471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [281 Valid, 5001 Invalid, 0 Unknown, 2189 Unchecked, 2.8s Time] [2022-07-19 22:00:57,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-07-19 22:00:57,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 348. [2022-07-19 22:00:57,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 348 states, 258 states have (on average 1.0968992248062015) internal successors, (283), 260 states have internal predecessors, (283), 56 states have call successors, (56), 30 states have call predecessors, (56), 33 states have return successors, (71), 57 states have call predecessors, (71), 55 states have call successors, (71) [2022-07-19 22:00:57,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 348 states to 348 states and 410 transitions. [2022-07-19 22:00:57,443 INFO L78 Accepts]: Start accepts. Automaton has 348 states and 410 transitions. Word has length 137 [2022-07-19 22:00:57,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:00:57,443 INFO L495 AbstractCegarLoop]: Abstraction has 348 states and 410 transitions. [2022-07-19 22:00:57,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 58 states have (on average 3.7758620689655173) internal successors, (219), 59 states have internal predecessors, (219), 21 states have call successors, (45), 10 states have call predecessors, (45), 15 states have return successors, (41), 14 states have call predecessors, (41), 19 states have call successors, (41) [2022-07-19 22:00:57,444 INFO L276 IsEmpty]: Start isEmpty. Operand 348 states and 410 transitions. [2022-07-19 22:00:57,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-19 22:00:57,445 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:00:57,445 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 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] [2022-07-19 22:00:57,481 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 22:00:57,665 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:00:57,666 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:00:57,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:00:57,666 INFO L85 PathProgramCache]: Analyzing trace with hash 331249879, now seen corresponding path program 1 times [2022-07-19 22:00:57,666 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:00:57,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2100672072] [2022-07-19 22:00:57,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:57,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:57,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:57,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:00:57,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:57,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:00:57,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:57,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:00:57,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:57,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:57,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:57,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:00:57,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:57,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:00:57,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:57,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:00:57,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:57,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:00:57,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:57,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:00:57,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:57,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 22:00:57,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:57,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:57,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:57,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:00:57,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:57,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 22:00:57,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:57,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:00:57,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:57,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 22:00:57,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:57,876 INFO L134 CoverageAnalysis]: Checked inductivity of 134 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2022-07-19 22:00:57,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:57,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2100672072] [2022-07-19 22:00:57,876 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2100672072] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:00:57,876 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:00:57,876 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 22:00:57,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2040735768] [2022-07-19 22:00:57,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:00:57,877 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 22:00:57,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:57,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 22:00:57,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 22:00:57,878 INFO L87 Difference]: Start difference. First operand 348 states and 410 transitions. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-19 22:00:58,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:00:58,362 INFO L93 Difference]: Finished difference Result 364 states and 430 transitions. [2022-07-19 22:00:58,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 22:00:58,362 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 138 [2022-07-19 22:00:58,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:00:58,364 INFO L225 Difference]: With dead ends: 364 [2022-07-19 22:00:58,364 INFO L226 Difference]: Without dead ends: 362 [2022-07-19 22:00:58,364 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2022-07-19 22:00:58,365 INFO L413 NwaCegarLoop]: 128 mSDtfsCounter, 188 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 637 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 766 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 637 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 22:00:58,365 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 292 Invalid, 766 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 637 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 22:00:58,365 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2022-07-19 22:00:58,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 352. [2022-07-19 22:00:58,380 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 352 states, 261 states have (on average 1.0957854406130267) internal successors, (286), 263 states have internal predecessors, (286), 56 states have call successors, (56), 31 states have call predecessors, (56), 34 states have return successors, (71), 57 states have call predecessors, (71), 55 states have call successors, (71) [2022-07-19 22:00:58,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 352 states to 352 states and 413 transitions. [2022-07-19 22:00:58,381 INFO L78 Accepts]: Start accepts. Automaton has 352 states and 413 transitions. Word has length 138 [2022-07-19 22:00:58,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:00:58,381 INFO L495 AbstractCegarLoop]: Abstraction has 352 states and 413 transitions. [2022-07-19 22:00:58,381 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 6 states have internal predecessors, (59), 4 states have call successors, (16), 4 states have call predecessors, (16), 1 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-19 22:00:58,382 INFO L276 IsEmpty]: Start isEmpty. Operand 352 states and 413 transitions. [2022-07-19 22:00:58,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-19 22:00:58,382 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:00:58,383 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:00:58,383 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 22:00:58,383 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:00:58,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:00:58,383 INFO L85 PathProgramCache]: Analyzing trace with hash 1515857075, now seen corresponding path program 1 times [2022-07-19 22:00:58,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:00:58,384 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398749108] [2022-07-19 22:00:58,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:58,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:58,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:58,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:00:58,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:58,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:00:58,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:58,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:00:58,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:58,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:58,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:58,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:00:58,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:58,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:00:58,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:58,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:00:58,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:58,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:00:58,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:58,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:00:58,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:58,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 22:00:58,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:58,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 22:00:58,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:58,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-19 22:00:58,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:58,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-19 22:00:58,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:58,588 INFO L134 CoverageAnalysis]: Checked inductivity of 162 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2022-07-19 22:00:58,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:58,588 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398749108] [2022-07-19 22:00:58,588 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398749108] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:00:58,588 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:00:58,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 22:00:58,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1885311598] [2022-07-19 22:00:58,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:00:58,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 22:00:58,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:58,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 22:00:58,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-07-19 22:00:58,590 INFO L87 Difference]: Start difference. First operand 352 states and 413 transitions. Second operand has 11 states, 10 states have (on average 5.3) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-19 22:00:59,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:00:59,100 INFO L93 Difference]: Finished difference Result 360 states and 421 transitions. [2022-07-19 22:00:59,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 22:00:59,101 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.3) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 138 [2022-07-19 22:00:59,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:00:59,102 INFO L225 Difference]: With dead ends: 360 [2022-07-19 22:00:59,103 INFO L226 Difference]: Without dead ends: 358 [2022-07-19 22:00:59,103 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2022-07-19 22:00:59,103 INFO L413 NwaCegarLoop]: 148 mSDtfsCounter, 96 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 652 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 22:00:59,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 652 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 913 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 22:00:59,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 358 states. [2022-07-19 22:00:59,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 358 to 357. [2022-07-19 22:00:59,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 357 states, 264 states have (on average 1.0946969696969697) internal successors, (289), 266 states have internal predecessors, (289), 57 states have call successors, (57), 32 states have call predecessors, (57), 35 states have return successors, (72), 58 states have call predecessors, (72), 56 states have call successors, (72) [2022-07-19 22:00:59,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 418 transitions. [2022-07-19 22:00:59,120 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 418 transitions. Word has length 138 [2022-07-19 22:00:59,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:00:59,121 INFO L495 AbstractCegarLoop]: Abstraction has 357 states and 418 transitions. [2022-07-19 22:00:59,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.3) internal successors, (53), 8 states have internal predecessors, (53), 2 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-19 22:00:59,121 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 418 transitions. [2022-07-19 22:00:59,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-19 22:00:59,122 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:00:59,122 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-07-19 22:00:59,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 22:00:59,123 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:00:59,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:00:59,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1194285255, now seen corresponding path program 1 times [2022-07-19 22:00:59,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:00:59,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1561479435] [2022-07-19 22:00:59,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:00:59,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:00:59,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:59,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:00:59,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:59,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:00:59,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:59,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:00:59,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:59,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:59,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:59,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:00:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:59,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:00:59,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:59,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:00:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:59,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:00:59,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:59,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:00:59,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:59,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 22:00:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:59,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:00:59,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:59,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:00:59,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:59,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 22:00:59,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:59,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:00:59,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:59,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 22:00:59,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:59,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-19 22:00:59,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:00:59,792 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-19 22:00:59,792 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:00:59,792 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1561479435] [2022-07-19 22:00:59,792 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1561479435] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:00:59,792 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:00:59,792 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [20] imperfect sequences [] total 20 [2022-07-19 22:00:59,793 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897021678] [2022-07-19 22:00:59,793 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:00:59,793 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-19 22:00:59,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:00:59,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-19 22:00:59,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=328, Unknown=0, NotChecked=0, Total=380 [2022-07-19 22:00:59,794 INFO L87 Difference]: Start difference. First operand 357 states and 418 transitions. Second operand has 20 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 16 states have internal predecessors, (60), 9 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2022-07-19 22:01:00,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:01:00,768 INFO L93 Difference]: Finished difference Result 392 states and 468 transitions. [2022-07-19 22:01:00,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 22:01:00,769 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 16 states have internal predecessors, (60), 9 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) Word has length 144 [2022-07-19 22:01:00,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:01:00,770 INFO L225 Difference]: With dead ends: 392 [2022-07-19 22:01:00,771 INFO L226 Difference]: Without dead ends: 390 [2022-07-19 22:01:00,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=685, Unknown=0, NotChecked=0, Total=812 [2022-07-19 22:01:00,776 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 206 mSDsluCounter, 256 mSDsCounter, 0 mSdLazyCounter, 1849 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 218 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 2055 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 1849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-19 22:01:00,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [218 Valid, 368 Invalid, 2055 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 1849 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-07-19 22:01:00,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 390 states. [2022-07-19 22:01:00,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 390 to 368. [2022-07-19 22:01:00,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 368 states, 272 states have (on average 1.0955882352941178) internal successors, (298), 274 states have internal predecessors, (298), 59 states have call successors, (59), 33 states have call predecessors, (59), 36 states have return successors, (74), 60 states have call predecessors, (74), 58 states have call successors, (74) [2022-07-19 22:01:00,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 368 states to 368 states and 431 transitions. [2022-07-19 22:01:00,797 INFO L78 Accepts]: Start accepts. Automaton has 368 states and 431 transitions. Word has length 144 [2022-07-19 22:01:00,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:01:00,797 INFO L495 AbstractCegarLoop]: Abstraction has 368 states and 431 transitions. [2022-07-19 22:01:00,797 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 18 states have (on average 3.3333333333333335) internal successors, (60), 16 states have internal predecessors, (60), 9 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 8 states have call predecessors, (16), 8 states have call successors, (16) [2022-07-19 22:01:00,797 INFO L276 IsEmpty]: Start isEmpty. Operand 368 states and 431 transitions. [2022-07-19 22:01:00,798 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 146 [2022-07-19 22:01:00,798 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:01:00,798 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:01:00,799 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-19 22:01:00,799 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:01:00,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:01:00,799 INFO L85 PathProgramCache]: Analyzing trace with hash -719576038, now seen corresponding path program 1 times [2022-07-19 22:01:00,799 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:01:00,799 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1914892504] [2022-07-19 22:01:00,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:01:00,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:01:01,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:01,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:01:01,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:01,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:01:01,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:01,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:01:01,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:01,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:01:01,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:01,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:01:01,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:01,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:01:01,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:01,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:01:01,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:01,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 22:01:01,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:01,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 22:01:01,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:01,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 22:01:01,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:01,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 22:01:01,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:01,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 22:01:01,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:01,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-19 22:01:01,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:01,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 22:01:01,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:01,306 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 25 proven. 41 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2022-07-19 22:01:01,306 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:01:01,306 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1914892504] [2022-07-19 22:01:01,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1914892504] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:01:01,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1677565003] [2022-07-19 22:01:01,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:01:01,307 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:01:01,307 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:01:01,308 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 22:01:01,310 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 22:01:01,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:01,759 INFO L263 TraceCheckSpWp]: Trace formula consists of 2794 conjuncts, 138 conjunts are in the unsatisfiable core [2022-07-19 22:01:01,763 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:01:01,848 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 22:01:02,158 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:01:02,159 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 16 treesize of output 22 [2022-07-19 22:01:02,164 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 7 treesize of output 3 [2022-07-19 22:01:02,176 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:01:02,176 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 22:01:02,183 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 6 [2022-07-19 22:01:02,255 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:01:02,255 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 27 [2022-07-19 22:01:02,267 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:01:02,267 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 20 treesize of output 26 [2022-07-19 22:01:02,282 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 22:01:02,285 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 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 22:01:02,764 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 9 treesize of output 5 [2022-07-19 22:01:02,768 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 22:01:08,139 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-19 22:01:08,139 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 57 treesize of output 53 [2022-07-19 22:01:08,149 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 32 treesize of output 24 [2022-07-19 22:01:08,249 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 69 proven. 92 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-19 22:01:08,249 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:01:09,620 INFO L356 Elim1Store]: treesize reduction 8, result has 46.7 percent of original size [2022-07-19 22:01:09,620 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 22:01:09,852 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 79 proven. 19 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2022-07-19 22:01:09,852 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1677565003] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 22:01:09,852 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 22:01:09,853 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 48, 21] total 80 [2022-07-19 22:01:09,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670833893] [2022-07-19 22:01:09,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 22:01:09,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 80 states [2022-07-19 22:01:09,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:01:09,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 80 interpolants. [2022-07-19 22:01:09,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=267, Invalid=6052, Unknown=1, NotChecked=0, Total=6320 [2022-07-19 22:01:09,855 INFO L87 Difference]: Start difference. First operand 368 states and 431 transitions. Second operand has 80 states, 71 states have (on average 2.9577464788732395) internal successors, (210), 68 states have internal predecessors, (210), 22 states have call successors, (47), 10 states have call predecessors, (47), 17 states have return successors, (41), 19 states have call predecessors, (41), 20 states have call successors, (41) [2022-07-19 22:01:18,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:01:18,151 INFO L93 Difference]: Finished difference Result 618 states and 743 transitions. [2022-07-19 22:01:18,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 91 states. [2022-07-19 22:01:18,152 INFO L78 Accepts]: Start accepts. Automaton has has 80 states, 71 states have (on average 2.9577464788732395) internal successors, (210), 68 states have internal predecessors, (210), 22 states have call successors, (47), 10 states have call predecessors, (47), 17 states have return successors, (41), 19 states have call predecessors, (41), 20 states have call successors, (41) Word has length 145 [2022-07-19 22:01:18,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:01:18,154 INFO L225 Difference]: With dead ends: 618 [2022-07-19 22:01:18,154 INFO L226 Difference]: Without dead ends: 430 [2022-07-19 22:01:18,158 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 428 GetRequests, 265 SyntacticMatches, 5 SemanticMatches, 158 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7800 ImplicationChecksByTransitivity, 11.7s TimeCoverageRelationStatistics Valid=1243, Invalid=24195, Unknown=2, NotChecked=0, Total=25440 [2022-07-19 22:01:18,158 INFO L413 NwaCegarLoop]: 168 mSDtfsCounter, 257 mSDsluCounter, 2542 mSDsCounter, 0 mSdLazyCounter, 7439 mSolverCounterSat, 233 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 2710 SdHoareTripleChecker+Invalid, 9383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 233 IncrementalHoareTripleChecker+Valid, 7439 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1711 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-19 22:01:18,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 2710 Invalid, 9383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [233 Valid, 7439 Invalid, 0 Unknown, 1711 Unchecked, 3.3s Time] [2022-07-19 22:01:18,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2022-07-19 22:01:18,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 400. [2022-07-19 22:01:18,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 297 states have (on average 1.0909090909090908) internal successors, (324), 300 states have internal predecessors, (324), 62 states have call successors, (62), 36 states have call predecessors, (62), 40 states have return successors, (80), 63 states have call predecessors, (80), 61 states have call successors, (80) [2022-07-19 22:01:18,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 466 transitions. [2022-07-19 22:01:18,179 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 466 transitions. Word has length 145 [2022-07-19 22:01:18,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:01:18,179 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 466 transitions. [2022-07-19 22:01:18,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 80 states, 71 states have (on average 2.9577464788732395) internal successors, (210), 68 states have internal predecessors, (210), 22 states have call successors, (47), 10 states have call predecessors, (47), 17 states have return successors, (41), 19 states have call predecessors, (41), 20 states have call successors, (41) [2022-07-19 22:01:18,180 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 466 transitions. [2022-07-19 22:01:18,181 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-19 22:01:18,181 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:01:18,181 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 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] [2022-07-19 22:01:18,220 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 22:01:18,395 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:01:18,395 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:01:18,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:01:18,396 INFO L85 PathProgramCache]: Analyzing trace with hash 1790037273, now seen corresponding path program 1 times [2022-07-19 22:01:18,396 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:01:18,396 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983547478] [2022-07-19 22:01:18,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:01:18,396 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:01:18,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:18,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:01:18,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:18,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:01:18,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:18,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:01:18,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:18,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:01:18,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:18,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:01:18,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:18,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:01:18,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:18,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:01:18,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:18,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:01:18,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:18,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:01:18,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:18,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 22:01:18,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:19,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:01:19,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:19,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:01:19,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:19,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 22:01:19,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:19,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:01:19,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:19,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 22:01:19,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:19,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 134 [2022-07-19 22:01:19,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:19,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 140 [2022-07-19 22:01:19,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:19,150 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 26 proven. 10 refuted. 0 times theorem prover too weak. 114 trivial. 0 not checked. [2022-07-19 22:01:19,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:01:19,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983547478] [2022-07-19 22:01:19,150 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983547478] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:01:19,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1665214031] [2022-07-19 22:01:19,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:01:19,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:01:19,151 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:01:19,155 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 22:01:19,156 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 22:01:19,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:19,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 2790 conjuncts, 80 conjunts are in the unsatisfiable core [2022-07-19 22:01:19,654 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:01:19,751 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 22:01:23,968 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:01:23,969 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 15 treesize of output 21 [2022-07-19 22:01:23,974 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 22:01:28,396 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:01:28,397 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 24 treesize of output 23 [2022-07-19 22:01:28,407 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:01:28,407 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 19 treesize of output 25 [2022-07-19 22:01:28,924 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 37 proven. 77 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-19 22:01:28,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:01:29,676 WARN L833 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_2079 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_byte_buf_write_be32_~#x#1.base| v_ArrVal_2079) |c_ULTIMATE.start_aws_byte_buf_write_be32_~buf#1.base|) (+ 8 |c_ULTIMATE.start_aws_byte_buf_write_be32_~buf#1.offset|)) 0))) (forall ((v_ArrVal_2078 Int)) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_write_be32_~#x#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_write_be32_~#x#1.base|) |c_ULTIMATE.start_aws_byte_buf_write_be32_~#x#1.offset| v_ArrVal_2078)) |c_ULTIMATE.start_aws_byte_buf_write_be32_~buf#1.base|) (+ 16 |c_ULTIMATE.start_aws_byte_buf_write_be32_~buf#1.offset|)) 18446744073709551616) 0)))) is different from false [2022-07-19 22:01:29,685 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1665214031] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:01:29,685 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 22:01:29,685 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 24] total 45 [2022-07-19 22:01:29,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697258508] [2022-07-19 22:01:29,685 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 22:01:29,686 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2022-07-19 22:01:29,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:01:29,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2022-07-19 22:01:29,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=193, Invalid=2670, Unknown=3, NotChecked=104, Total=2970 [2022-07-19 22:01:29,687 INFO L87 Difference]: Start difference. First operand 400 states and 466 transitions. Second operand has 45 states, 40 states have (on average 3.775) internal successors, (151), 40 states have internal predecessors, (151), 20 states have call successors, (35), 8 states have call predecessors, (35), 12 states have return successors, (34), 18 states have call predecessors, (34), 20 states have call successors, (34) [2022-07-19 22:01:37,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:01:37,082 INFO L93 Difference]: Finished difference Result 566 states and 712 transitions. [2022-07-19 22:01:37,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2022-07-19 22:01:37,083 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 40 states have (on average 3.775) internal successors, (151), 40 states have internal predecessors, (151), 20 states have call successors, (35), 8 states have call predecessors, (35), 12 states have return successors, (34), 18 states have call predecessors, (34), 20 states have call successors, (34) Word has length 150 [2022-07-19 22:01:37,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:01:37,085 INFO L225 Difference]: With dead ends: 566 [2022-07-19 22:01:37,085 INFO L226 Difference]: Without dead ends: 476 [2022-07-19 22:01:37,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 216 SyntacticMatches, 8 SemanticMatches, 84 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 2030 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=552, Invalid=6587, Unknown=5, NotChecked=166, Total=7310 [2022-07-19 22:01:37,087 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 355 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 4326 mSolverCounterSat, 393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 1527 SdHoareTripleChecker+Invalid, 5676 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 393 IncrementalHoareTripleChecker+Valid, 4326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 957 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-19 22:01:37,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [401 Valid, 1527 Invalid, 5676 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [393 Valid, 4326 Invalid, 0 Unknown, 957 Unchecked, 2.2s Time] [2022-07-19 22:01:37,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 476 states. [2022-07-19 22:01:37,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 476 to 398. [2022-07-19 22:01:37,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 398 states, 296 states have (on average 1.0912162162162162) internal successors, (323), 299 states have internal predecessors, (323), 62 states have call successors, (62), 34 states have call predecessors, (62), 39 states have return successors, (84), 64 states have call predecessors, (84), 61 states have call successors, (84) [2022-07-19 22:01:37,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 398 states to 398 states and 469 transitions. [2022-07-19 22:01:37,110 INFO L78 Accepts]: Start accepts. Automaton has 398 states and 469 transitions. Word has length 150 [2022-07-19 22:01:37,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:01:37,110 INFO L495 AbstractCegarLoop]: Abstraction has 398 states and 469 transitions. [2022-07-19 22:01:37,111 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 40 states have (on average 3.775) internal successors, (151), 40 states have internal predecessors, (151), 20 states have call successors, (35), 8 states have call predecessors, (35), 12 states have return successors, (34), 18 states have call predecessors, (34), 20 states have call successors, (34) [2022-07-19 22:01:37,111 INFO L276 IsEmpty]: Start isEmpty. Operand 398 states and 469 transitions. [2022-07-19 22:01:37,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2022-07-19 22:01:37,112 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:01:37,112 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 4, 4, 4, 4, 4, 4, 3, 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] [2022-07-19 22:01:37,134 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 22:01:37,331 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:01:37,332 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:01:37,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:01:37,332 INFO L85 PathProgramCache]: Analyzing trace with hash 402200858, now seen corresponding path program 1 times [2022-07-19 22:01:37,332 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:01:37,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144472070] [2022-07-19 22:01:37,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:01:37,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:01:37,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:37,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:01:37,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:37,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:01:37,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:37,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:01:37,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:37,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:01:37,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:37,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:01:37,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:37,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:01:37,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:37,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:01:37,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:37,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 22:01:37,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:37,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 22:01:37,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:37,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 22:01:37,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:37,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 22:01:37,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:37,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:01:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:37,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 22:01:37,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:37,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 22:01:37,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:37,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:01:37,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:38,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 22:01:38,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:38,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-19 22:01:38,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:38,090 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 42 proven. 16 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2022-07-19 22:01:38,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:01:38,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144472070] [2022-07-19 22:01:38,091 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144472070] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:01:38,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1149924989] [2022-07-19 22:01:38,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:01:38,091 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:01:38,091 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:01:38,094 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 22:01:38,097 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 22:01:38,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:38,607 INFO L263 TraceCheckSpWp]: Trace formula consists of 2832 conjuncts, 90 conjunts are in the unsatisfiable core [2022-07-19 22:01:38,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:01:38,723 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 22:01:42,957 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:01:42,957 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 22:01:42,961 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 22:01:43,006 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:01:43,006 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 21 treesize of output 27 [2022-07-19 22:01:43,014 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 22:01:43,019 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 22:01:47,431 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:01:47,432 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 24 treesize of output 23 [2022-07-19 22:01:47,436 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 22:01:48,365 INFO L134 CoverageAnalysis]: Checked inductivity of 164 backedges. 52 proven. 91 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-19 22:01:48,366 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:01:49,099 WARN L833 $PredicateComparison]: unable to prove that (or (forall ((v_ArrVal_2209 Int)) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_write_be32_~#x#1.base| (store (select |c_#memory_int| |c_ULTIMATE.start_aws_byte_buf_write_be32_~#x#1.base|) |c_ULTIMATE.start_aws_byte_buf_write_be32_~#x#1.offset| v_ArrVal_2209)) |c_ULTIMATE.start_aws_byte_buf_write_be32_~buf#1.base|) (+ 16 |c_ULTIMATE.start_aws_byte_buf_write_be32_~buf#1.offset|)) 18446744073709551616) 0))) (forall ((v_ArrVal_2210 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_aws_byte_buf_write_be32_~#x#1.base| v_ArrVal_2210) |c_ULTIMATE.start_aws_byte_buf_write_be32_~buf#1.base|) (+ 8 |c_ULTIMATE.start_aws_byte_buf_write_be32_~buf#1.offset|)) 0)))) is different from false [2022-07-19 22:01:49,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1149924989] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:01:49,105 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 22:01:49,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 27] total 46 [2022-07-19 22:01:49,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233951263] [2022-07-19 22:01:49,106 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 22:01:49,106 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2022-07-19 22:01:49,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:01:49,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2022-07-19 22:01:49,107 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=187, Invalid=2784, Unknown=3, NotChecked=106, Total=3080 [2022-07-19 22:01:49,107 INFO L87 Difference]: Start difference. First operand 398 states and 469 transitions. Second operand has 46 states, 41 states have (on average 4.2682926829268295) internal successors, (175), 42 states have internal predecessors, (175), 23 states have call successors, (35), 8 states have call predecessors, (35), 13 states have return successors, (34), 17 states have call predecessors, (34), 23 states have call successors, (34) [2022-07-19 22:01:58,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:01:58,491 INFO L93 Difference]: Finished difference Result 548 states and 667 transitions. [2022-07-19 22:01:58,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 70 states. [2022-07-19 22:01:58,491 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 41 states have (on average 4.2682926829268295) internal successors, (175), 42 states have internal predecessors, (175), 23 states have call successors, (35), 8 states have call predecessors, (35), 13 states have return successors, (34), 17 states have call predecessors, (34), 23 states have call successors, (34) Word has length 151 [2022-07-19 22:01:58,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:01:58,493 INFO L225 Difference]: With dead ends: 548 [2022-07-19 22:01:58,493 INFO L226 Difference]: Without dead ends: 450 [2022-07-19 22:01:58,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 349 GetRequests, 221 SyntacticMatches, 14 SemanticMatches, 114 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 3749 ImplicationChecksByTransitivity, 16.7s TimeCoverageRelationStatistics Valid=1088, Invalid=12019, Unknown=7, NotChecked=226, Total=13340 [2022-07-19 22:01:58,494 INFO L413 NwaCegarLoop]: 180 mSDtfsCounter, 361 mSDsluCounter, 1377 mSDsCounter, 0 mSdLazyCounter, 4379 mSolverCounterSat, 246 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 375 SdHoareTripleChecker+Valid, 1557 SdHoareTripleChecker+Invalid, 5794 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 246 IncrementalHoareTripleChecker+Valid, 4379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1169 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-19 22:01:58,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [375 Valid, 1557 Invalid, 5794 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [246 Valid, 4379 Invalid, 0 Unknown, 1169 Unchecked, 2.5s Time] [2022-07-19 22:01:58,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 450 states. [2022-07-19 22:01:58,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 450 to 384. [2022-07-19 22:01:58,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 285 states have (on average 1.087719298245614) internal successors, (310), 289 states have internal predecessors, (310), 59 states have call successors, (59), 33 states have call predecessors, (59), 39 states have return successors, (81), 61 states have call predecessors, (81), 58 states have call successors, (81) [2022-07-19 22:01:58,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 450 transitions. [2022-07-19 22:01:58,515 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 450 transitions. Word has length 151 [2022-07-19 22:01:58,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:01:58,517 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 450 transitions. [2022-07-19 22:01:58,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 41 states have (on average 4.2682926829268295) internal successors, (175), 42 states have internal predecessors, (175), 23 states have call successors, (35), 8 states have call predecessors, (35), 13 states have return successors, (34), 17 states have call predecessors, (34), 23 states have call successors, (34) [2022-07-19 22:01:58,517 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 450 transitions. [2022-07-19 22:01:58,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 155 [2022-07-19 22:01:58,518 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:01:58,518 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 9, 4, 4, 4, 4, 4, 4, 4, 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 22:01:58,539 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-07-19 22:01:58,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:01:58,731 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:01:58,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:01:58,732 INFO L85 PathProgramCache]: Analyzing trace with hash -1092836136, now seen corresponding path program 1 times [2022-07-19 22:01:58,732 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:01:58,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [689517142] [2022-07-19 22:01:58,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:01:58,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:01:58,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:58,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:01:58,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:58,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:01:58,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:58,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:01:58,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:58,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:01:58,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:58,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:01:58,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:58,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:01:58,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:58,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:01:58,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:58,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 22:01:58,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:58,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 22:01:58,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:58,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 22:01:58,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:58,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 22:01:58,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:58,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 22:01:58,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:58,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2022-07-19 22:01:58,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:58,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:01:58,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:58,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:01:58,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:58,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:01:58,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:58,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 22:01:58,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:58,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-19 22:01:58,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:58,951 INFO L134 CoverageAnalysis]: Checked inductivity of 216 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 204 trivial. 0 not checked. [2022-07-19 22:01:58,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:01:58,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [689517142] [2022-07-19 22:01:58,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [689517142] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:01:58,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:01:58,952 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 22:01:58,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264148131] [2022-07-19 22:01:58,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:01:58,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 22:01:58,952 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:01:58,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 22:01:58,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-19 22:01:58,953 INFO L87 Difference]: Start difference. First operand 384 states and 450 transitions. Second operand has 10 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-19 22:01:59,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:01:59,506 INFO L93 Difference]: Finished difference Result 406 states and 477 transitions. [2022-07-19 22:01:59,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 22:01:59,507 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) Word has length 154 [2022-07-19 22:01:59,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:01:59,508 INFO L225 Difference]: With dead ends: 406 [2022-07-19 22:01:59,508 INFO L226 Difference]: Without dead ends: 404 [2022-07-19 22:01:59,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=213, Unknown=0, NotChecked=0, Total=272 [2022-07-19 22:01:59,509 INFO L413 NwaCegarLoop]: 143 mSDtfsCounter, 152 mSDsluCounter, 375 mSDsCounter, 0 mSdLazyCounter, 811 mSolverCounterSat, 104 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 518 SdHoareTripleChecker+Invalid, 915 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 104 IncrementalHoareTripleChecker+Valid, 811 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-19 22:01:59,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 518 Invalid, 915 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [104 Valid, 811 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-19 22:01:59,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 404 states. [2022-07-19 22:01:59,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 404 to 391. [2022-07-19 22:01:59,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 288 states have (on average 1.0868055555555556) internal successors, (313), 292 states have internal predecessors, (313), 62 states have call successors, (62), 34 states have call predecessors, (62), 40 states have return successors, (84), 64 states have call predecessors, (84), 61 states have call successors, (84) [2022-07-19 22:01:59,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 459 transitions. [2022-07-19 22:01:59,530 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 459 transitions. Word has length 154 [2022-07-19 22:01:59,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:01:59,531 INFO L495 AbstractCegarLoop]: Abstraction has 391 states and 459 transitions. [2022-07-19 22:01:59,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 1 states have call successors, (18) [2022-07-19 22:01:59,531 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 459 transitions. [2022-07-19 22:01:59,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-07-19 22:01:59,532 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:01:59,532 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:01:59,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-19 22:01:59,533 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:01:59,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:01:59,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1498803250, now seen corresponding path program 1 times [2022-07-19 22:01:59,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:01:59,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148646032] [2022-07-19 22:01:59,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:01:59,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:01:59,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:59,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:01:59,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:59,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:01:59,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:59,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:01:59,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:59,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:01:59,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:59,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:01:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:59,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:01:59,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:59,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:01:59,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:59,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 22:01:59,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:59,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 22:01:59,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:59,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 22:01:59,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:59,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 22:01:59,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:59,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 22:01:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:59,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-19 22:01:59,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:59,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 22:01:59,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:59,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:01:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:59,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:01:59,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:59,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:01:59,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:59,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 22:01:59,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:59,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-19 22:01:59,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:01:59,847 INFO L134 CoverageAnalysis]: Checked inductivity of 276 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-07-19 22:01:59,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:01:59,847 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148646032] [2022-07-19 22:01:59,847 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148646032] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 22:01:59,847 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 22:01:59,847 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 22:01:59,848 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [922608263] [2022-07-19 22:01:59,848 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 22:01:59,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 22:01:59,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:01:59,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 22:01:59,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-19 22:01:59,849 INFO L87 Difference]: Start difference. First operand 391 states and 459 transitions. Second operand has 11 states, 10 states have (on average 6.2) internal successors, (62), 8 states have internal predecessors, (62), 5 states have call successors, (21), 5 states have call predecessors, (21), 3 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2022-07-19 22:02:00,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 22:02:00,549 INFO L93 Difference]: Finished difference Result 509 states and 615 transitions. [2022-07-19 22:02:00,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-19 22:02:00,549 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 6.2) internal successors, (62), 8 states have internal predecessors, (62), 5 states have call successors, (21), 5 states have call predecessors, (21), 3 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) Word has length 171 [2022-07-19 22:02:00,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 22:02:00,551 INFO L225 Difference]: With dead ends: 509 [2022-07-19 22:02:00,551 INFO L226 Difference]: Without dead ends: 393 [2022-07-19 22:02:00,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=103, Invalid=403, Unknown=0, NotChecked=0, Total=506 [2022-07-19 22:02:00,552 INFO L413 NwaCegarLoop]: 137 mSDtfsCounter, 161 mSDsluCounter, 438 mSDsCounter, 0 mSdLazyCounter, 849 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 161 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 962 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 849 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-19 22:02:00,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [161 Valid, 575 Invalid, 962 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 849 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-19 22:02:00,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2022-07-19 22:02:00,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 392. [2022-07-19 22:02:00,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 392 states, 289 states have (on average 1.0865051903114187) internal successors, (314), 293 states have internal predecessors, (314), 62 states have call successors, (62), 34 states have call predecessors, (62), 40 states have return successors, (84), 64 states have call predecessors, (84), 61 states have call successors, (84) [2022-07-19 22:02:00,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 392 states to 392 states and 460 transitions. [2022-07-19 22:02:00,578 INFO L78 Accepts]: Start accepts. Automaton has 392 states and 460 transitions. Word has length 171 [2022-07-19 22:02:00,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 22:02:00,578 INFO L495 AbstractCegarLoop]: Abstraction has 392 states and 460 transitions. [2022-07-19 22:02:00,578 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 6.2) internal successors, (62), 8 states have internal predecessors, (62), 5 states have call successors, (21), 5 states have call predecessors, (21), 3 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2022-07-19 22:02:00,578 INFO L276 IsEmpty]: Start isEmpty. Operand 392 states and 460 transitions. [2022-07-19 22:02:00,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-07-19 22:02:00,580 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 22:02:00,581 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 22:02:00,581 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2022-07-19 22:02:00,581 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 22:02:00,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 22:02:00,581 INFO L85 PathProgramCache]: Analyzing trace with hash -481654668, now seen corresponding path program 1 times [2022-07-19 22:02:00,581 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 22:02:00,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1013782324] [2022-07-19 22:02:00,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:02:00,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 22:02:00,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-19 22:02:00,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 22:02:00,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 22:02:00,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:00,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 22:02:00,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 22:02:00,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 22:02:00,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 22:02:00,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 22:02:00,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 22:02:00,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 22:02:00,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-19 22:02:00,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-19 22:02:00,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 22:02:00,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:00,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 22:02:00,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 22:02:00,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:00,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 22:02:00,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:01,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 153 [2022-07-19 22:02:01,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:01,009 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 276 trivial. 0 not checked. [2022-07-19 22:02:01,009 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 22:02:01,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1013782324] [2022-07-19 22:02:01,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1013782324] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:02:01,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [42199845] [2022-07-19 22:02:01,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 22:02:01,010 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 22:02:01,010 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 22:02:01,017 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 22:02:01,019 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 22:02:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 22:02:01,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 2937 conjuncts, 163 conjunts are in the unsatisfiable core [2022-07-19 22:02:01,570 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 22:02:01,574 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 22:02:01,753 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 5 treesize of output 3 [2022-07-19 22:02:01,805 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:02:01,806 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-07-19 22:02:01,837 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 22:02:01,841 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 22:02:02,417 INFO L356 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2022-07-19 22:02:02,417 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2022-07-19 22:02:02,459 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 29 treesize of output 29 [2022-07-19 22:02:02,466 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 24 treesize of output 23 [2022-07-19 22:02:21,617 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 29 treesize of output 29 [2022-07-19 22:02:21,620 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 23 [2022-07-19 22:02:21,657 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-19 22:02:21,668 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-19 22:02:21,668 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 22:02:23,707 WARN L855 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_aws_byte_buf_write_be32_~buf#1.base_BEFORE_CALL_40| Int)) (< (+ (select (select |c_#memory_$Pointer$.base| |v_ULTIMATE.start_aws_byte_buf_write_be32_~buf#1.base_BEFORE_CALL_40|) 8) 1) |v_ULTIMATE.start_aws_byte_buf_write_be32_~buf#1.base_BEFORE_CALL_40|)) is different from true [2022-07-19 22:02:57,323 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-07-19 22:02:57,327 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:02:57,328 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 24 treesize of output 23 [2022-07-19 22:03:45,452 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2523 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_memcpy_impl_#in~dst.base| v_ArrVal_2523))) is different from true [2022-07-19 22:03:45,461 WARN L855 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_2523 (Array Int Int))) (= (store |c_old(#memory_int)| |c_my_memcpy_#in~dst.base| v_ArrVal_2523) |c_#memory_int|)) is different from true [2022-07-19 22:03:45,469 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-19 22:03:45,470 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 12 [2022-07-19 22:03:45,473 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:03:45,473 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 21 [2022-07-19 22:03:45,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-19 22:03:45,512 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 24 treesize of output 23 [2022-07-19 22:03:51,859 INFO L134 CoverageAnalysis]: Checked inductivity of 277 backedges. 24 proven. 188 refuted. 13 times theorem prover too weak. 48 trivial. 4 not checked. [2022-07-19 22:03:51,859 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 22:03:52,143 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2531 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_aws_byte_buf_write_#t~mem1174.base| v_ArrVal_2531) c_aws_byte_buf_write_~buf.base) (+ c_aws_byte_buf_write_~buf.offset 16)) 18446744073709551616) 0))) is different from false [2022-07-19 22:03:52,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [42199845] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 22:03:52,144 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-19 22:03:52,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 42] total 53 [2022-07-19 22:03:52,144 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469974948] [2022-07-19 22:03:52,144 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-19 22:03:52,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 53 states [2022-07-19 22:03:52,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 22:03:52,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2022-07-19 22:03:52,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=214, Invalid=2644, Unknown=20, NotChecked=428, Total=3306 [2022-07-19 22:03:52,146 INFO L87 Difference]: Start difference. First operand 392 states and 460 transitions. Second operand has 53 states, 47 states have (on average 3.6595744680851063) internal successors, (172), 42 states have internal predecessors, (172), 20 states have call successors, (41), 15 states have call predecessors, (41), 12 states have return successors, (38), 16 states have call predecessors, (38), 19 states have call successors, (38)