./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_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 9248d62da968900adf628e209d21739bec2ffe4f64c1d45016706037787190a6 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 10:56:24,769 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 10:56:24,772 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 10:56:24,820 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 10:56:24,821 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 10:56:24,822 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 10:56:24,824 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 10:56:24,826 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 10:56:24,828 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 10:56:24,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 10:56:24,834 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 10:56:24,836 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 10:56:24,836 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 10:56:24,838 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 10:56:24,839 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 10:56:24,842 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 10:56:24,843 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 10:56:24,845 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 10:56:24,847 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 10:56:24,852 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 10:56:24,854 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 10:56:24,855 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 10:56:24,856 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 10:56:24,857 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 10:56:24,858 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 10:56:24,865 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 10:56:24,866 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 10:56:24,866 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 10:56:24,867 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 10:56:24,868 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 10:56:24,869 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 10:56:24,870 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 10:56:24,871 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 10:56:24,872 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 10:56:24,873 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 10:56:24,873 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 10:56:24,874 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 10:56:24,874 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 10:56:24,874 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 10:56:24,875 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 10:56:24,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 10:56:24,877 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 10:56:24,878 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-12 10:56:24,908 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 10:56:24,909 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 10:56:24,909 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 10:56:24,910 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 10:56:24,910 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 10:56:24,911 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 10:56:24,913 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 10:56:24,913 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 10:56:24,914 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 10:56:24,915 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 10:56:24,915 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 10:56:24,915 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 10:56:24,916 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 10:56:24,916 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 10:56:24,916 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 10:56:24,916 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 10:56:24,916 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 10:56:24,917 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 10:56:24,917 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 10:56:24,917 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 10:56:24,918 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 10:56:24,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:56:24,919 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 10:56:24,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 10:56:24,919 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 10:56:24,919 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 10:56:24,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 10:56:24,920 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 10:56:24,920 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 10:56:24,920 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 10:56:24,921 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9248d62da968900adf628e209d21739bec2ffe4f64c1d45016706037787190a6 [2022-07-12 10:56:25,154 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 10:56:25,174 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 10:56:25,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 10:56:25,179 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 10:56:25,180 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 10:56:25,182 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i [2022-07-12 10:56:25,253 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a77d7ba40/e1ae6390d8014ce5845dbad4f14b4c50/FLAG149bb7bfe [2022-07-12 10:56:25,963 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 10:56:25,965 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_byte_buf_init_copy_harness.i [2022-07-12 10:56:26,005 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a77d7ba40/e1ae6390d8014ce5845dbad4f14b4c50/FLAG149bb7bfe [2022-07-12 10:56:26,050 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a77d7ba40/e1ae6390d8014ce5845dbad4f14b4c50 [2022-07-12 10:56:26,052 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 10:56:26,055 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 10:56:26,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 10:56:26,058 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 10:56:26,061 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 10:56:26,062 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:56:26" (1/1) ... [2022-07-12 10:56:26,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b698bee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:56:26, skipping insertion in model container [2022-07-12 10:56:26,064 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 10:56:26" (1/1) ... [2022-07-12 10:56:26,071 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 10:56:26,170 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 10:56:26,402 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_init_copy_harness.i[4496,4509] [2022-07-12 10:56:26,410 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_init_copy_harness.i[4556,4569] [2022-07-12 10:56:27,197 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:56:27,198 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:56:27,198 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:56:27,199 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:56:27,200 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:56:27,212 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:56:27,213 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:56:27,215 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:56:27,215 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:56:27,474 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 10:56:27,475 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 10:56:27,476 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 10:56:27,477 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 10:56:27,478 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 10:56:27,479 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 10:56:27,480 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 10:56:27,480 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 10:56:27,481 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 10:56:27,481 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 10:56:27,656 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 10:56:27,817 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:56:27,819 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:56:27,870 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:56:27,910 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 10:56:27,935 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_init_copy_harness.i[4496,4509] [2022-07-12 10:56:27,937 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_init_copy_harness.i[4556,4569] [2022-07-12 10:56:27,968 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:56:27,969 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:56:27,970 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:56:27,970 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:56:27,971 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:56:27,980 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:56:27,981 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:56:27,982 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:56:27,982 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:56:28,020 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-12 10:56:28,021 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-12 10:56:28,022 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-12 10:56:28,022 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-12 10:56:28,023 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-12 10:56:28,023 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-12 10:56:28,024 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-12 10:56:28,025 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-12 10:56:28,025 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-12 10:56:28,025 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-12 10:56:28,049 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-12 10:56:28,141 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:56:28,155 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-12 10:56:28,218 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 10:56:28,422 INFO L208 MainTranslator]: Completed translation [2022-07-12 10:56:28,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:56:28 WrapperNode [2022-07-12 10:56:28,423 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 10:56:28,424 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 10:56:28,424 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 10:56:28,424 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 10:56:28,431 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:56:28" (1/1) ... [2022-07-12 10:56:28,535 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:56:28" (1/1) ... [2022-07-12 10:56:28,603 INFO L137 Inliner]: procedures = 691, calls = 2624, calls flagged for inlining = 63, calls inlined = 11, statements flattened = 937 [2022-07-12 10:56:28,604 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 10:56:28,605 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 10:56:28,605 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 10:56:28,605 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 10:56:28,613 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:56:28" (1/1) ... [2022-07-12 10:56:28,613 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:56:28" (1/1) ... [2022-07-12 10:56:28,622 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:56:28" (1/1) ... [2022-07-12 10:56:28,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:56:28" (1/1) ... [2022-07-12 10:56:28,659 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:56:28" (1/1) ... [2022-07-12 10:56:28,664 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:56:28" (1/1) ... [2022-07-12 10:56:28,683 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:56:28" (1/1) ... [2022-07-12 10:56:28,692 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 10:56:28,693 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 10:56:28,693 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 10:56:28,693 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 10:56:28,700 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:56:28" (1/1) ... [2022-07-12 10:56:28,707 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 10:56:28,715 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:56:28,729 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 10:56:28,753 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 10:56:28,774 INFO L130 BoogieDeclarations]: Found specification of procedure aws_byte_buf_is_valid [2022-07-12 10:56:28,774 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_byte_buf_is_valid [2022-07-12 10:56:28,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 10:56:28,774 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-12 10:56:28,775 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-12 10:56:28,775 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2022-07-12 10:56:28,775 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2022-07-12 10:56:28,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-12 10:56:28,776 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-12 10:56:28,776 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-12 10:56:28,777 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-12 10:56:28,777 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-12 10:56:28,777 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-12 10:56:28,778 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 10:56:28,778 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-12 10:56:28,778 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy_impl [2022-07-12 10:56:28,778 INFO L138 BoogieDeclarations]: Found implementation of procedure memcpy_impl [2022-07-12 10:56:28,778 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 10:56:28,778 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 10:56:28,779 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-12 10:56:28,779 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-12 10:56:28,779 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-12 10:56:28,779 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-12 10:56:28,779 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_malloc [2022-07-12 10:56:28,779 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_malloc [2022-07-12 10:56:28,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2022-07-12 10:56:28,780 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2022-07-12 10:56:28,780 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-12 10:56:28,781 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-12 10:56:28,781 INFO L130 BoogieDeclarations]: Found specification of procedure my_memcpy [2022-07-12 10:56:28,781 INFO L138 BoogieDeclarations]: Found implementation of procedure my_memcpy [2022-07-12 10:56:28,781 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mem_acquire [2022-07-12 10:56:28,782 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mem_acquire [2022-07-12 10:56:28,782 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 10:56:28,782 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-12 10:56:28,782 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-12 10:56:28,782 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-12 10:56:28,782 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-12 10:56:28,782 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2022-07-12 10:56:28,782 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2022-07-12 10:56:28,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-12 10:56:28,783 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 10:56:29,093 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 10:56:29,096 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 10:56:30,195 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 10:56:30,204 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 10:56:30,205 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2022-07-12 10:56:30,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:56:30 BoogieIcfgContainer [2022-07-12 10:56:30,208 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 10:56:30,210 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 10:56:30,210 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 10:56:30,213 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 10:56:30,213 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 10:56:26" (1/3) ... [2022-07-12 10:56:30,214 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bd15fb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:56:30, skipping insertion in model container [2022-07-12 10:56:30,214 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 10:56:28" (2/3) ... [2022-07-12 10:56:30,215 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2bd15fb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 10:56:30, skipping insertion in model container [2022-07-12 10:56:30,215 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 10:56:30" (3/3) ... [2022-07-12 10:56:30,216 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_byte_buf_init_copy_harness.i [2022-07-12 10:56:30,229 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 10:56:30,230 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 10:56:30,301 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 10:56:30,310 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@65da477f, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4075f123 [2022-07-12 10:56:30,311 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 10:56:30,316 INFO L276 IsEmpty]: Start isEmpty. Operand has 185 states, 122 states have (on average 1.221311475409836) internal successors, (149), 121 states have internal predecessors, (149), 49 states have call successors, (49), 15 states have call predecessors, (49), 15 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) [2022-07-12 10:56:30,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2022-07-12 10:56:30,327 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:56:30,328 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 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] [2022-07-12 10:56:30,328 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:56:30,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:56:30,333 INFO L85 PathProgramCache]: Analyzing trace with hash -283420546, now seen corresponding path program 1 times [2022-07-12 10:56:30,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:56:30,342 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849039988] [2022-07-12 10:56:30,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:56:30,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:56:30,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:30,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:56:30,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:30,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:56:30,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:30,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:56:30,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:30,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:30,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:31,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:56:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:31,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:56:31,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:31,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:56:31,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:31,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:31,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:31,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 10:56:31,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:31,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 10:56:31,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:31,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 10:56:31,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:31,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 10:56:31,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:31,102 INFO L134 CoverageAnalysis]: Checked inductivity of 70 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-12 10:56:31,103 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:56:31,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849039988] [2022-07-12 10:56:31,104 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849039988] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:56:31,104 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:56:31,104 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-12 10:56:31,106 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [919759435] [2022-07-12 10:56:31,107 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:56:31,112 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 10:56:31,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:56:31,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 10:56:31,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:56:31,143 INFO L87 Difference]: Start difference. First operand has 185 states, 122 states have (on average 1.221311475409836) internal successors, (149), 121 states have internal predecessors, (149), 49 states have call successors, (49), 15 states have call predecessors, (49), 15 states have return successors, (49), 49 states have call predecessors, (49), 49 states have call successors, (49) 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, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-12 10:56:31,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:56:31,496 INFO L93 Difference]: Finished difference Result 376 states and 532 transitions. [2022-07-12 10:56:31,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 10:56:31,499 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, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) Word has length 82 [2022-07-12 10:56:31,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:56:31,509 INFO L225 Difference]: With dead ends: 376 [2022-07-12 10:56:31,509 INFO L226 Difference]: Without dead ends: 189 [2022-07-12 10:56:31,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 10:56:31,517 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 76 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 88 SdHoareTripleChecker+Valid, 294 SdHoareTripleChecker+Invalid, 106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 10:56:31,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [88 Valid, 294 Invalid, 106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [51 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 10:56:31,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2022-07-12 10:56:31,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 179. [2022-07-12 10:56:31,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179 states, 114 states have (on average 1.1666666666666667) internal successors, (133), 115 states have internal predecessors, (133), 49 states have call successors, (49), 15 states have call predecessors, (49), 15 states have return successors, (48), 48 states have call predecessors, (48), 48 states have call successors, (48) [2022-07-12 10:56:31,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 230 transitions. [2022-07-12 10:56:31,567 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 230 transitions. Word has length 82 [2022-07-12 10:56:31,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:56:31,567 INFO L495 AbstractCegarLoop]: Abstraction has 179 states and 230 transitions. [2022-07-12 10:56:31,567 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, (12), 3 states have call predecessors, (12), 2 states have return successors, (11), 1 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-12 10:56:31,568 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 230 transitions. [2022-07-12 10:56:31,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-12 10:56:31,571 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:56:31,572 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:56:31,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 10:56:31,572 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:56:31,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:56:31,573 INFO L85 PathProgramCache]: Analyzing trace with hash 426190495, now seen corresponding path program 1 times [2022-07-12 10:56:31,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:56:31,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462851888] [2022-07-12 10:56:31,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:56:31,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:56:31,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:31,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:56:31,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:31,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:56:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:31,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:56:31,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:31,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:31,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:31,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:56:31,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:31,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:56:31,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:31,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:56:31,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:31,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:31,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:31,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 10:56:31,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:31,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 10:56:31,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:31,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 10:56:31,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:31,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 10:56:31,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:32,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 10:56:32,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:32,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 10:56:32,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:32,018 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-12 10:56:32,018 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:56:32,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462851888] [2022-07-12 10:56:32,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462851888] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:56:32,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [999380751] [2022-07-12 10:56:32,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:56:32,019 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:56:32,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:56:32,021 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:56:32,022 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 10:56:32,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:32,521 INFO L263 TraceCheckSpWp]: Trace formula consists of 2598 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-12 10:56:32,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:56:32,601 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-12 10:56:32,602 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:56:32,602 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [999380751] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:56:32,602 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:56:32,602 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-07-12 10:56:32,603 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62253041] [2022-07-12 10:56:32,603 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:56:32,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:56:32,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:56:32,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:56:32,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:56:32,605 INFO L87 Difference]: Start difference. First operand 179 states and 230 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 10:56:32,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:56:32,647 INFO L93 Difference]: Finished difference Result 248 states and 316 transitions. [2022-07-12 10:56:32,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:56:32,647 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 92 [2022-07-12 10:56:32,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:56:32,650 INFO L225 Difference]: With dead ends: 248 [2022-07-12 10:56:32,650 INFO L226 Difference]: Without dead ends: 173 [2022-07-12 10:56:32,651 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-12 10:56:32,652 INFO L413 NwaCegarLoop]: 228 mSDtfsCounter, 1 mSDsluCounter, 900 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 1128 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 10:56:32,652 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 1128 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 10:56:32,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2022-07-12 10:56:32,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2022-07-12 10:56:32,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 110 states have (on average 1.1545454545454545) internal successors, (127), 111 states have internal predecessors, (127), 47 states have call successors, (47), 15 states have call predecessors, (47), 15 states have return successors, (46), 46 states have call predecessors, (46), 46 states have call successors, (46) [2022-07-12 10:56:32,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 220 transitions. [2022-07-12 10:56:32,666 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 220 transitions. Word has length 92 [2022-07-12 10:56:32,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:56:32,667 INFO L495 AbstractCegarLoop]: Abstraction has 173 states and 220 transitions. [2022-07-12 10:56:32,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 10:56:32,667 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 220 transitions. [2022-07-12 10:56:32,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-07-12 10:56:32,669 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:56:32,669 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:56:32,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 10:56:32,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:56:32,896 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:56:32,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:56:32,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1901749225, now seen corresponding path program 1 times [2022-07-12 10:56:32,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:56:32,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338451097] [2022-07-12 10:56:32,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:56:32,897 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:56:32,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:33,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:56:33,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:33,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:56:33,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:33,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:56:33,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:33,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:33,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:33,095 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:56:33,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:33,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:56:33,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:33,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:56:33,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:33,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:33,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:33,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 10:56:33,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:33,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 10:56:33,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:33,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 10:56:33,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:33,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 10:56:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:33,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 10:56:33,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:33,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 10:56:33,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:33,210 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-12 10:56:33,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:56:33,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338451097] [2022-07-12 10:56:33,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338451097] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:56:33,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453018875] [2022-07-12 10:56:33,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:56:33,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:56:33,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:56:33,213 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:56:33,241 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 10:56:33,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:33,705 INFO L263 TraceCheckSpWp]: Trace formula consists of 2622 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-12 10:56:33,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:56:33,813 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2022-07-12 10:56:33,814 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:56:33,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453018875] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:56:33,814 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:56:33,814 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 11 [2022-07-12 10:56:33,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301770836] [2022-07-12 10:56:33,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:56:33,815 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:56:33,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:56:33,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:56:33,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:56:33,816 INFO L87 Difference]: Start difference. First operand 173 states and 220 transitions. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-12 10:56:33,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:56:33,990 INFO L93 Difference]: Finished difference Result 249 states and 320 transitions. [2022-07-12 10:56:33,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 10:56:33,990 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), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) Word has length 95 [2022-07-12 10:56:33,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:56:33,993 INFO L225 Difference]: With dead ends: 249 [2022-07-12 10:56:33,993 INFO L226 Difference]: Without dead ends: 176 [2022-07-12 10:56:33,994 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 127 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2022-07-12 10:56:33,994 INFO L413 NwaCegarLoop]: 204 mSDtfsCounter, 78 mSDsluCounter, 890 mSDsCounter, 0 mSdLazyCounter, 106 mSolverCounterSat, 47 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 1094 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 47 IncrementalHoareTripleChecker+Valid, 106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:56:33,995 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 1094 Invalid, 153 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [47 Valid, 106 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 10:56:33,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-07-12 10:56:34,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2022-07-12 10:56:34,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 112 states have (on average 1.1517857142857142) internal successors, (129), 114 states have internal predecessors, (129), 47 states have call successors, (47), 15 states have call predecessors, (47), 16 states have return successors, (49), 46 states have call predecessors, (49), 46 states have call successors, (49) [2022-07-12 10:56:34,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 225 transitions. [2022-07-12 10:56:34,009 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 225 transitions. Word has length 95 [2022-07-12 10:56:34,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:56:34,010 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 225 transitions. [2022-07-12 10:56:34,010 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), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-12 10:56:34,010 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 225 transitions. [2022-07-12 10:56:34,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-12 10:56:34,012 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:56:34,012 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:56:34,041 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 10:56:34,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2022-07-12 10:56:34,228 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:56:34,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:56:34,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1019605314, now seen corresponding path program 1 times [2022-07-12 10:56:34,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:56:34,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241191172] [2022-07-12 10:56:34,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:56:34,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:56:34,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:34,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:56:34,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:34,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:56:34,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:34,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:56:34,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:34,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:34,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:34,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:56:34,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:34,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:56:34,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:34,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:56:34,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:34,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:34,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:34,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 10:56:34,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:34,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 10:56:34,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:34,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 10:56:34,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:34,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 10:56:34,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:34,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 10:56:34,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:34,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 10:56:34,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:34,569 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2022-07-12 10:56:34,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:56:34,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241191172] [2022-07-12 10:56:34,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241191172] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:56:34,570 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128403884] [2022-07-12 10:56:34,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:56:34,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:56:34,571 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:56:34,572 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:56:34,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 10:56:35,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:35,042 INFO L263 TraceCheckSpWp]: Trace formula consists of 2639 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-12 10:56:35,046 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:56:35,166 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-12 10:56:35,167 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:56:35,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128403884] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:56:35,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:56:35,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7] total 11 [2022-07-12 10:56:35,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134591566] [2022-07-12 10:56:35,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:56:35,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:56:35,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:56:35,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:56:35,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:56:35,169 INFO L87 Difference]: Start difference. First operand 176 states and 225 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-12 10:56:35,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:56:35,356 INFO L93 Difference]: Finished difference Result 338 states and 429 transitions. [2022-07-12 10:56:35,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 10:56:35,357 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 101 [2022-07-12 10:56:35,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:56:35,361 INFO L225 Difference]: With dead ends: 338 [2022-07-12 10:56:35,361 INFO L226 Difference]: Without dead ends: 176 [2022-07-12 10:56:35,362 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 123 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:56:35,363 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 249 mSDsluCounter, 303 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 65 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 479 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 65 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:56:35,363 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 479 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [65 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 10:56:35,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2022-07-12 10:56:35,375 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 176. [2022-07-12 10:56:35,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 112 states have (on average 1.1517857142857142) internal successors, (129), 114 states have internal predecessors, (129), 47 states have call successors, (47), 15 states have call predecessors, (47), 16 states have return successors, (47), 46 states have call predecessors, (47), 46 states have call successors, (47) [2022-07-12 10:56:35,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 223 transitions. [2022-07-12 10:56:35,377 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 223 transitions. Word has length 101 [2022-07-12 10:56:35,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:56:35,378 INFO L495 AbstractCegarLoop]: Abstraction has 176 states and 223 transitions. [2022-07-12 10:56:35,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-12 10:56:35,378 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 223 transitions. [2022-07-12 10:56:35,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-12 10:56:35,380 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:56:35,380 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 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] [2022-07-12 10:56:35,411 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-12 10:56:35,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:56:35,608 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:56:35,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:56:35,608 INFO L85 PathProgramCache]: Analyzing trace with hash -2090058387, now seen corresponding path program 2 times [2022-07-12 10:56:35,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:56:35,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492373643] [2022-07-12 10:56:35,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:56:35,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:56:35,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:35,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:56:35,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:35,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:56:35,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:35,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:56:35,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:35,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:35,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:35,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:56:35,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:35,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:56:35,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:35,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:56:35,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:35,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:35,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:35,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 10:56:35,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:35,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:56:35,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:35,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 10:56:35,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:35,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 10:56:35,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:35,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 10:56:35,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:35,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 10:56:35,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:35,943 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-12 10:56:35,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:56:35,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492373643] [2022-07-12 10:56:35,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492373643] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:56:35,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [312891797] [2022-07-12 10:56:35,944 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:56:35,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:56:35,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:56:35,946 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:56:35,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 10:56:36,380 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-07-12 10:56:36,380 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:56:36,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 2303 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-12 10:56:36,394 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:56:36,465 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2022-07-12 10:56:36,465 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:56:36,466 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [312891797] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:56:36,466 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:56:36,466 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2022-07-12 10:56:36,466 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [867791088] [2022-07-12 10:56:36,466 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:56:36,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 10:56:36,468 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:56:36,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 10:56:36,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2022-07-12 10:56:36,469 INFO L87 Difference]: Start difference. First operand 176 states and 223 transitions. Second operand has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-12 10:56:36,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:56:36,550 INFO L93 Difference]: Finished difference Result 188 states and 240 transitions. [2022-07-12 10:56:36,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 10:56:36,551 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 107 [2022-07-12 10:56:36,553 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:56:36,555 INFO L225 Difference]: With dead ends: 188 [2022-07-12 10:56:36,555 INFO L226 Difference]: Without dead ends: 186 [2022-07-12 10:56:36,556 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-07-12 10:56:36,557 INFO L413 NwaCegarLoop]: 219 mSDtfsCounter, 22 mSDsluCounter, 1263 mSDsCounter, 0 mSdLazyCounter, 64 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 1482 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 64 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 10:56:36,558 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 1482 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 64 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 10:56:36,559 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 186 states. [2022-07-12 10:56:36,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 186 to 185. [2022-07-12 10:56:36,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 185 states, 118 states have (on average 1.1440677966101696) internal successors, (135), 121 states have internal predecessors, (135), 48 states have call successors, (48), 16 states have call predecessors, (48), 18 states have return successors, (54), 47 states have call predecessors, (54), 47 states have call successors, (54) [2022-07-12 10:56:36,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 237 transitions. [2022-07-12 10:56:36,587 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 237 transitions. Word has length 107 [2022-07-12 10:56:36,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:56:36,588 INFO L495 AbstractCegarLoop]: Abstraction has 185 states and 237 transitions. [2022-07-12 10:56:36,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.285714285714286) internal successors, (51), 6 states have internal predecessors, (51), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-12 10:56:36,588 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 237 transitions. [2022-07-12 10:56:36,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-12 10:56:36,594 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:56:36,594 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 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] [2022-07-12 10:56:36,626 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-12 10:56:36,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:56:36,807 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:56:36,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:56:36,808 INFO L85 PathProgramCache]: Analyzing trace with hash -1813963275, now seen corresponding path program 1 times [2022-07-12 10:56:36,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:56:36,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [62999229] [2022-07-12 10:56:36,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:56:36,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:56:36,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:37,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:56:37,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:37,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:56:37,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:37,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:56:37,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:37,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:37,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:37,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:56:37,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:37,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:56:37,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:37,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:56:37,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:37,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:37,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:37,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 10:56:37,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:37,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:56:37,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:37,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 10:56:37,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:37,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 10:56:37,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:37,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 10:56:37,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:37,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 10:56:37,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:37,180 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 78 trivial. 0 not checked. [2022-07-12 10:56:37,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:56:37,180 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [62999229] [2022-07-12 10:56:37,180 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [62999229] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:56:37,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [561026866] [2022-07-12 10:56:37,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:56:37,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:56:37,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:56:37,182 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:56:37,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-12 10:56:37,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:37,648 INFO L263 TraceCheckSpWp]: Trace formula consists of 2668 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 10:56:37,652 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:56:37,764 INFO L134 CoverageAnalysis]: Checked inductivity of 86 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2022-07-12 10:56:37,764 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:56:37,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [561026866] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:56:37,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:56:37,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-07-12 10:56:37,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330174883] [2022-07-12 10:56:37,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:56:37,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:56:37,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:56:37,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:56:37,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-07-12 10:56:37,766 INFO L87 Difference]: Start difference. First operand 185 states and 237 transitions. Second operand has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-12 10:56:38,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:56:38,043 INFO L93 Difference]: Finished difference Result 342 states and 429 transitions. [2022-07-12 10:56:38,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:56:38,044 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) Word has length 111 [2022-07-12 10:56:38,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:56:38,046 INFO L225 Difference]: With dead ends: 342 [2022-07-12 10:56:38,046 INFO L226 Difference]: Without dead ends: 182 [2022-07-12 10:56:38,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 134 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2022-07-12 10:56:38,048 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 275 mSDsluCounter, 596 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 769 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 10:56:38,048 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 769 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 10:56:38,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2022-07-12 10:56:38,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 182. [2022-07-12 10:56:38,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 182 states, 116 states have (on average 1.1379310344827587) internal successors, (132), 118 states have internal predecessors, (132), 48 states have call successors, (48), 16 states have call predecessors, (48), 17 states have return successors, (53), 47 states have call predecessors, (53), 47 states have call successors, (53) [2022-07-12 10:56:38,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 233 transitions. [2022-07-12 10:56:38,060 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 233 transitions. Word has length 111 [2022-07-12 10:56:38,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:56:38,061 INFO L495 AbstractCegarLoop]: Abstraction has 182 states and 233 transitions. [2022-07-12 10:56:38,061 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 10.666666666666666) internal successors, (64), 7 states have internal predecessors, (64), 4 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-12 10:56:38,061 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 233 transitions. [2022-07-12 10:56:38,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-12 10:56:38,062 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:56:38,063 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:56:38,087 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-12 10:56:38,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:56:38,276 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:56:38,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:56:38,276 INFO L85 PathProgramCache]: Analyzing trace with hash 693216864, now seen corresponding path program 1 times [2022-07-12 10:56:38,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:56:38,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [269409878] [2022-07-12 10:56:38,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:56:38,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:56:38,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:38,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:56:38,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:38,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:56:38,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:38,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:56:38,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:38,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:38,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:38,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:56:38,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:38,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:56:38,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:38,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:56:38,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:38,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:38,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:38,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 10:56:38,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:38,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:56:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:38,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 10:56:38,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:38,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 10:56:38,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:38,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 10:56:38,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:38,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-12 10:56:38,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:38,623 INFO L134 CoverageAnalysis]: Checked inductivity of 98 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-07-12 10:56:38,623 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:56:38,624 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [269409878] [2022-07-12 10:56:38,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [269409878] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:56:38,624 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:56:38,636 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 10:56:38,637 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339932342] [2022-07-12 10:56:38,637 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:56:38,637 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 10:56:38,638 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:56:38,638 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 10:56:38,638 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:56:38,638 INFO L87 Difference]: Start difference. First operand 182 states and 233 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 10:56:39,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:56:39,178 INFO L93 Difference]: Finished difference Result 286 states and 361 transitions. [2022-07-12 10:56:39,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:56:39,179 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 117 [2022-07-12 10:56:39,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:56:39,180 INFO L225 Difference]: With dead ends: 286 [2022-07-12 10:56:39,180 INFO L226 Difference]: Without dead ends: 200 [2022-07-12 10:56:39,181 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:56:39,181 INFO L413 NwaCegarLoop]: 193 mSDtfsCounter, 166 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 417 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 167 SdHoareTripleChecker+Valid, 427 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 417 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 10:56:39,182 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [167 Valid, 427 Invalid, 542 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [125 Valid, 417 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-12 10:56:39,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-07-12 10:56:39,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 183. [2022-07-12 10:56:39,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 183 states, 117 states have (on average 1.1367521367521367) internal successors, (133), 119 states have internal predecessors, (133), 48 states have call successors, (48), 16 states have call predecessors, (48), 17 states have return successors, (53), 47 states have call predecessors, (53), 47 states have call successors, (53) [2022-07-12 10:56:39,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 234 transitions. [2022-07-12 10:56:39,194 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 234 transitions. Word has length 117 [2022-07-12 10:56:39,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:56:39,195 INFO L495 AbstractCegarLoop]: Abstraction has 183 states and 234 transitions. [2022-07-12 10:56:39,195 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 10:56:39,195 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 234 transitions. [2022-07-12 10:56:39,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-12 10:56:39,196 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:56:39,196 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:56:39,197 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 10:56:39,197 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:56:39,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:56:39,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1457718631, now seen corresponding path program 1 times [2022-07-12 10:56:39,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:56:39,198 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572593570] [2022-07-12 10:56:39,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:56:39,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:56:39,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:39,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:56:39,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:39,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:56:39,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:39,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:56:39,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:39,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:39,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:39,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:56:39,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:39,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:56:39,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:39,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:56:39,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:39,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:39,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:39,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 10:56:39,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:39,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:56:39,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:39,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 10:56:39,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:39,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 10:56:39,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:39,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 10:56:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:39,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 10:56:39,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:39,521 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-07-12 10:56:39,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:56:39,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572593570] [2022-07-12 10:56:39,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572593570] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:56:39,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1947689521] [2022-07-12 10:56:39,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:56:39,522 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:56:39,523 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:56:39,524 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:56:39,546 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-12 10:56:40,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:40,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 2704 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 10:56:40,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:56:40,137 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-12 10:56:40,138 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:56:40,138 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1947689521] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:56:40,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:56:40,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-07-12 10:56:40,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125719861] [2022-07-12 10:56:40,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:56:40,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 10:56:40,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:56:40,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 10:56:40,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:56:40,139 INFO L87 Difference]: Start difference. First operand 183 states and 234 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-12 10:56:40,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:56:40,332 INFO L93 Difference]: Finished difference Result 370 states and 486 transitions. [2022-07-12 10:56:40,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:56:40,333 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) Word has length 118 [2022-07-12 10:56:40,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:56:40,334 INFO L225 Difference]: With dead ends: 370 [2022-07-12 10:56:40,335 INFO L226 Difference]: Without dead ends: 201 [2022-07-12 10:56:40,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:56:40,336 INFO L413 NwaCegarLoop]: 223 mSDtfsCounter, 40 mSDsluCounter, 559 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 40 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 10:56:40,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [40 Valid, 782 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 40 Unchecked, 0.2s Time] [2022-07-12 10:56:40,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2022-07-12 10:56:40,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 188. [2022-07-12 10:56:40,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 188 states, 122 states have (on average 1.1475409836065573) internal successors, (140), 124 states have internal predecessors, (140), 48 states have call successors, (48), 16 states have call predecessors, (48), 17 states have return successors, (53), 47 states have call predecessors, (53), 47 states have call successors, (53) [2022-07-12 10:56:40,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 241 transitions. [2022-07-12 10:56:40,349 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 241 transitions. Word has length 118 [2022-07-12 10:56:40,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:56:40,350 INFO L495 AbstractCegarLoop]: Abstraction has 188 states and 241 transitions. [2022-07-12 10:56:40,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 1 states have call successors, (13) [2022-07-12 10:56:40,350 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 241 transitions. [2022-07-12 10:56:40,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-12 10:56:40,351 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:56:40,352 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:56:40,383 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-12 10:56:40,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:56:40,572 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:56:40,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:56:40,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1199553193, now seen corresponding path program 1 times [2022-07-12 10:56:40,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:56:40,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [564426861] [2022-07-12 10:56:40,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:56:40,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:56:40,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:40,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:56:40,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:40,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:56:40,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:40,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:56:40,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:40,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:40,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:40,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:56:40,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:40,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:56:40,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:40,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:56:40,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:40,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:40,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:40,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 10:56:40,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:40,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:56:40,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:40,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 10:56:40,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:40,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 10:56:40,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:40,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 10:56:40,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:40,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-12 10:56:40,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:40,929 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 98 trivial. 0 not checked. [2022-07-12 10:56:40,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:56:40,929 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [564426861] [2022-07-12 10:56:40,930 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [564426861] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:56:40,930 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [53962573] [2022-07-12 10:56:40,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:56:40,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:56:40,930 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:56:40,932 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:56:40,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-12 10:56:41,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:41,436 INFO L263 TraceCheckSpWp]: Trace formula consists of 2699 conjuncts, 44 conjunts are in the unsatisfiable core [2022-07-12 10:56:41,442 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:56:41,560 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-12 10:56:42,200 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 67 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 10:56:42,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:56:42,460 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2022-07-12 10:56:42,547 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 10 proven. 12 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-07-12 10:56:42,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [53962573] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:56:42,547 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:56:42,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 13, 11] total 26 [2022-07-12 10:56:42,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509497374] [2022-07-12 10:56:42,548 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:56:42,549 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-07-12 10:56:42,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:56:42,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-07-12 10:56:42,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=573, Unknown=0, NotChecked=0, Total=650 [2022-07-12 10:56:42,550 INFO L87 Difference]: Start difference. First operand 188 states and 241 transitions. Second operand has 26 states, 24 states have (on average 5.875) internal successors, (141), 22 states have internal predecessors, (141), 10 states have call successors, (37), 5 states have call predecessors, (37), 7 states have return successors, (36), 12 states have call predecessors, (36), 10 states have call successors, (36) [2022-07-12 10:56:44,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:56:44,620 INFO L93 Difference]: Finished difference Result 471 states and 618 transitions. [2022-07-12 10:56:44,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-12 10:56:44,621 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 5.875) internal successors, (141), 22 states have internal predecessors, (141), 10 states have call successors, (37), 5 states have call predecessors, (37), 7 states have return successors, (36), 12 states have call predecessors, (36), 10 states have call successors, (36) Word has length 118 [2022-07-12 10:56:44,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:56:44,623 INFO L225 Difference]: With dead ends: 471 [2022-07-12 10:56:44,623 INFO L226 Difference]: Without dead ends: 309 [2022-07-12 10:56:44,624 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 279 GetRequests, 232 SyntacticMatches, 12 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 272 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=143, Invalid=1189, Unknown=0, NotChecked=0, Total=1332 [2022-07-12 10:56:44,625 INFO L413 NwaCegarLoop]: 224 mSDtfsCounter, 253 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 2190 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 293 SdHoareTripleChecker+Valid, 1223 SdHoareTripleChecker+Invalid, 2715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 2190 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 340 IncrementalHoareTripleChecker+Unchecked, 1.7s IncrementalHoareTripleChecker+Time [2022-07-12 10:56:44,625 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [293 Valid, 1223 Invalid, 2715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [185 Valid, 2190 Invalid, 0 Unknown, 340 Unchecked, 1.7s Time] [2022-07-12 10:56:44,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2022-07-12 10:56:44,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 228. [2022-07-12 10:56:44,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 228 states, 153 states have (on average 1.1633986928104576) internal successors, (178), 157 states have internal predecessors, (178), 52 states have call successors, (52), 20 states have call predecessors, (52), 22 states have return successors, (59), 50 states have call predecessors, (59), 51 states have call successors, (59) [2022-07-12 10:56:44,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 228 states to 228 states and 289 transitions. [2022-07-12 10:56:44,643 INFO L78 Accepts]: Start accepts. Automaton has 228 states and 289 transitions. Word has length 118 [2022-07-12 10:56:44,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:56:44,643 INFO L495 AbstractCegarLoop]: Abstraction has 228 states and 289 transitions. [2022-07-12 10:56:44,644 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 5.875) internal successors, (141), 22 states have internal predecessors, (141), 10 states have call successors, (37), 5 states have call predecessors, (37), 7 states have return successors, (36), 12 states have call predecessors, (36), 10 states have call successors, (36) [2022-07-12 10:56:44,644 INFO L276 IsEmpty]: Start isEmpty. Operand 228 states and 289 transitions. [2022-07-12 10:56:44,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2022-07-12 10:56:44,645 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:56:44,645 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:56:44,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-12 10:56:44,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:56:44,864 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:56:44,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:56:44,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1264569920, now seen corresponding path program 1 times [2022-07-12 10:56:44,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:56:44,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184737058] [2022-07-12 10:56:44,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:56:44,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:56:44,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:44,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:56:44,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:44,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:56:44,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:45,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:56:45,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:45,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:45,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:45,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:56:45,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:45,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:56:45,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:45,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:56:45,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:45,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:45,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:45,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 10:56:45,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:45,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:56:45,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:45,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 10:56:45,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:45,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 10:56:45,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:45,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-12 10:56:45,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:45,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-12 10:56:45,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:45,100 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-07-12 10:56:45,101 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:56:45,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184737058] [2022-07-12 10:56:45,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184737058] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:56:45,101 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1679582760] [2022-07-12 10:56:45,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:56:45,102 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:56:45,102 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:56:45,103 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:56:45,133 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-12 10:56:45,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:45,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 2713 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 10:56:45,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:56:45,611 INFO L134 CoverageAnalysis]: Checked inductivity of 101 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2022-07-12 10:56:45,611 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:56:45,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1679582760] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:56:45,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:56:45,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2022-07-12 10:56:45,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219272475] [2022-07-12 10:56:45,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:56:45,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:56:45,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:56:45,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:56:45,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:56:45,613 INFO L87 Difference]: Start difference. First operand 228 states and 289 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 10:56:45,643 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:56:45,643 INFO L93 Difference]: Finished difference Result 451 states and 576 transitions. [2022-07-12 10:56:45,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:56:45,644 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 119 [2022-07-12 10:56:45,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:56:45,647 INFO L225 Difference]: With dead ends: 451 [2022-07-12 10:56:45,647 INFO L226 Difference]: Without dead ends: 237 [2022-07-12 10:56:45,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:56:45,649 INFO L413 NwaCegarLoop]: 230 mSDtfsCounter, 20 mSDsluCounter, 419 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 649 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 10:56:45,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 649 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 10:56:45,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2022-07-12 10:56:45,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 224. [2022-07-12 10:56:45,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 224 states, 150 states have (on average 1.1533333333333333) internal successors, (173), 153 states have internal predecessors, (173), 52 states have call successors, (52), 20 states have call predecessors, (52), 21 states have return successors, (57), 50 states have call predecessors, (57), 51 states have call successors, (57) [2022-07-12 10:56:45,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 224 states to 224 states and 282 transitions. [2022-07-12 10:56:45,666 INFO L78 Accepts]: Start accepts. Automaton has 224 states and 282 transitions. Word has length 119 [2022-07-12 10:56:45,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:56:45,667 INFO L495 AbstractCegarLoop]: Abstraction has 224 states and 282 transitions. [2022-07-12 10:56:45,667 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 10:56:45,667 INFO L276 IsEmpty]: Start isEmpty. Operand 224 states and 282 transitions. [2022-07-12 10:56:45,669 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-12 10:56:45,669 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:56:45,669 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 10:56:45,701 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-12 10:56:45,887 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-12 10:56:45,887 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:56:45,888 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:56:45,888 INFO L85 PathProgramCache]: Analyzing trace with hash 1982077188, now seen corresponding path program 2 times [2022-07-12 10:56:45,888 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:56:45,888 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [142251318] [2022-07-12 10:56:45,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:56:45,888 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:56:45,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:46,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:56:46,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:46,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:56:46,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:46,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:56:46,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:46,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:46,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:46,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:56:46,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:46,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:56:46,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:46,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:56:46,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:46,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:46,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:46,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 10:56:46,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:46,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:56:46,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:46,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 10:56:46,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:46,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 10:56:46,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:46,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 10:56:46,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:46,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 10:56:46,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:46,243 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-12 10:56:46,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:56:46,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [142251318] [2022-07-12 10:56:46,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [142251318] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:56:46,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1444153581] [2022-07-12 10:56:46,244 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-12 10:56:46,245 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:56:46,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:56:46,246 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:56:46,247 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-12 10:56:47,203 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-12 10:56:47,203 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-12 10:56:47,216 INFO L263 TraceCheckSpWp]: Trace formula consists of 2725 conjuncts, 22 conjunts are in the unsatisfiable core [2022-07-12 10:56:47,219 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:56:47,267 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 75 trivial. 0 not checked. [2022-07-12 10:56:47,268 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:56:47,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1444153581] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:56:47,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:56:47,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 13 [2022-07-12 10:56:47,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [329374250] [2022-07-12 10:56:47,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:56:47,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 10:56:47,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:56:47,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 10:56:47,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2022-07-12 10:56:47,270 INFO L87 Difference]: Start difference. First operand 224 states and 282 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 10:56:47,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:56:47,340 INFO L93 Difference]: Finished difference Result 394 states and 495 transitions. [2022-07-12 10:56:47,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 10:56:47,340 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) Word has length 123 [2022-07-12 10:56:47,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:56:47,342 INFO L225 Difference]: With dead ends: 394 [2022-07-12 10:56:47,343 INFO L226 Difference]: Without dead ends: 229 [2022-07-12 10:56:47,343 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 157 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2022-07-12 10:56:47,344 INFO L413 NwaCegarLoop]: 225 mSDtfsCounter, 10 mSDsluCounter, 1092 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 1317 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 10:56:47,344 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 1317 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 10:56:47,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2022-07-12 10:56:47,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 229. [2022-07-12 10:56:47,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 154 states have (on average 1.1493506493506493) internal successors, (177), 158 states have internal predecessors, (177), 52 states have call successors, (52), 20 states have call predecessors, (52), 22 states have return successors, (62), 50 states have call predecessors, (62), 51 states have call successors, (62) [2022-07-12 10:56:47,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 291 transitions. [2022-07-12 10:56:47,362 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 291 transitions. Word has length 123 [2022-07-12 10:56:47,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:56:47,362 INFO L495 AbstractCegarLoop]: Abstraction has 229 states and 291 transitions. [2022-07-12 10:56:47,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 6 states have internal predecessors, (69), 2 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (13), 3 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 10:56:47,363 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 291 transitions. [2022-07-12 10:56:47,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-12 10:56:47,379 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:56:47,379 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:56:47,418 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-12 10:56:47,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:56:47,600 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:56:47,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:56:47,600 INFO L85 PathProgramCache]: Analyzing trace with hash -1351230667, now seen corresponding path program 1 times [2022-07-12 10:56:47,601 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:56:47,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1977148992] [2022-07-12 10:56:47,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:56:47,601 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:56:47,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:47,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:56:47,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:47,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:56:47,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:47,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:56:47,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:47,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:47,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:47,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:56:47,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:47,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:56:47,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:47,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:56:47,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:47,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:47,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:47,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 10:56:47,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:47,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:56:47,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:47,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 10:56:47,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:47,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 10:56:47,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:47,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 10:56:47,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:47,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 10:56:47,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:47,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 106 [2022-07-12 10:56:47,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:47,993 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-07-12 10:56:47,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:56:47,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1977148992] [2022-07-12 10:56:47,994 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1977148992] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:56:47,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1567121338] [2022-07-12 10:56:47,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:56:47,994 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:56:47,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:56:47,996 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:56:47,997 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-12 10:56:48,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:48,494 INFO L263 TraceCheckSpWp]: Trace formula consists of 2763 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-12 10:56:48,498 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:56:48,869 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 17 treesize of output 9 [2022-07-12 10:56:48,888 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 91 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-12 10:56:48,889 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:56:48,889 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1567121338] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:56:48,889 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:56:48,889 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8] total 16 [2022-07-12 10:56:48,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008137742] [2022-07-12 10:56:48,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:56:48,890 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:56:48,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:56:48,890 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:56:48,890 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=208, Unknown=0, NotChecked=0, Total=240 [2022-07-12 10:56:48,890 INFO L87 Difference]: Start difference. First operand 229 states and 291 transitions. Second operand has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-07-12 10:56:49,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:56:49,578 INFO L93 Difference]: Finished difference Result 524 states and 702 transitions. [2022-07-12 10:56:49,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 10:56:49,579 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) Word has length 126 [2022-07-12 10:56:49,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:56:49,581 INFO L225 Difference]: With dead ends: 524 [2022-07-12 10:56:49,581 INFO L226 Difference]: Without dead ends: 347 [2022-07-12 10:56:49,582 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 142 SyntacticMatches, 5 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=64, Invalid=398, Unknown=0, NotChecked=0, Total=462 [2022-07-12 10:56:49,583 INFO L413 NwaCegarLoop]: 285 mSDtfsCounter, 192 mSDsluCounter, 1577 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 1862 SdHoareTripleChecker+Invalid, 594 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 98 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-12 10:56:49,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 1862 Invalid, 594 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 426 Invalid, 0 Unknown, 98 Unchecked, 0.5s Time] [2022-07-12 10:56:49,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2022-07-12 10:56:49,600 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 267. [2022-07-12 10:56:49,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 267 states, 182 states have (on average 1.1373626373626373) internal successors, (207), 188 states have internal predecessors, (207), 56 states have call successors, (56), 23 states have call predecessors, (56), 28 states have return successors, (79), 55 states have call predecessors, (79), 55 states have call successors, (79) [2022-07-12 10:56:49,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 267 states to 267 states and 342 transitions. [2022-07-12 10:56:49,602 INFO L78 Accepts]: Start accepts. Automaton has 267 states and 342 transitions. Word has length 126 [2022-07-12 10:56:49,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:56:49,603 INFO L495 AbstractCegarLoop]: Abstraction has 267 states and 342 transitions. [2022-07-12 10:56:49,603 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.3) internal successors, (73), 10 states have internal predecessors, (73), 5 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 5 states have call successors, (15) [2022-07-12 10:56:49,603 INFO L276 IsEmpty]: Start isEmpty. Operand 267 states and 342 transitions. [2022-07-12 10:56:49,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-12 10:56:49,604 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:56:49,604 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 10:56:49,627 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-12 10:56:49,811 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-12 10:56:49,811 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:56:49,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:56:49,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1989755287, now seen corresponding path program 1 times [2022-07-12 10:56:49,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:56:49,812 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670333184] [2022-07-12 10:56:49,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:56:49,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:56:49,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:49,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:56:49,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:49,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:56:49,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:49,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:56:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:49,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:49,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:49,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:56:49,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:49,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:56:49,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:49,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:56:49,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:49,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:49,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:49,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 10:56:49,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:49,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:56:49,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:50,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 10:56:50,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:50,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 10:56:50,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:50,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 10:56:50,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:50,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 10:56:50,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:50,061 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2022-07-12 10:56:50,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:56:50,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670333184] [2022-07-12 10:56:50,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670333184] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:56:50,062 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [726008151] [2022-07-12 10:56:50,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:56:50,062 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:56:50,062 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:56:50,063 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:56:50,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-12 10:56:50,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:50,553 INFO L263 TraceCheckSpWp]: Trace formula consists of 2730 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 10:56:50,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:56:50,562 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2022-07-12 10:56:50,563 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:56:50,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [726008151] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:56:50,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:56:50,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2022-07-12 10:56:50,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738109508] [2022-07-12 10:56:50,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:56:50,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:56:50,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:56:50,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:56:50,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:56:50,565 INFO L87 Difference]: Start difference. First operand 267 states and 342 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 10:56:50,595 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:56:50,595 INFO L93 Difference]: Finished difference Result 518 states and 665 transitions. [2022-07-12 10:56:50,596 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:56:50,596 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2022-07-12 10:56:50,596 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:56:50,598 INFO L225 Difference]: With dead ends: 518 [2022-07-12 10:56:50,598 INFO L226 Difference]: Without dead ends: 265 [2022-07-12 10:56:50,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:56:50,600 INFO L413 NwaCegarLoop]: 218 mSDtfsCounter, 9 mSDsluCounter, 427 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 10:56:50,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 645 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 10:56:50,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 265 states. [2022-07-12 10:56:50,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 265 to 262. [2022-07-12 10:56:50,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 262 states, 178 states have (on average 1.1292134831460674) internal successors, (201), 183 states have internal predecessors, (201), 56 states have call successors, (56), 23 states have call predecessors, (56), 27 states have return successors, (72), 55 states have call predecessors, (72), 55 states have call successors, (72) [2022-07-12 10:56:50,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 262 states to 262 states and 329 transitions. [2022-07-12 10:56:50,614 INFO L78 Accepts]: Start accepts. Automaton has 262 states and 329 transitions. Word has length 125 [2022-07-12 10:56:50,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:56:50,614 INFO L495 AbstractCegarLoop]: Abstraction has 262 states and 329 transitions. [2022-07-12 10:56:50,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 10:56:50,615 INFO L276 IsEmpty]: Start isEmpty. Operand 262 states and 329 transitions. [2022-07-12 10:56:50,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-12 10:56:50,616 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:56:50,616 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 10:56:50,646 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-12 10:56:50,838 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-12 10:56:50,839 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:56:50,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:56:50,845 INFO L85 PathProgramCache]: Analyzing trace with hash 44113837, now seen corresponding path program 1 times [2022-07-12 10:56:50,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:56:50,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [835228030] [2022-07-12 10:56:50,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:56:50,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:56:50,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:50,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:56:50,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:50,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:56:50,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:50,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:56:50,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:51,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:51,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:51,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:56:51,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:51,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:56:51,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:51,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:56:51,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:51,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:51,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:51,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 10:56:51,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:51,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:56:51,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:51,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 10:56:51,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:51,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 10:56:51,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:51,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 10:56:51,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:51,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 10:56:51,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:51,087 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-12 10:56:51,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:56:51,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [835228030] [2022-07-12 10:56:51,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [835228030] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:56:51,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1506579723] [2022-07-12 10:56:51,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:56:51,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:56:51,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:56:51,090 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:56:51,126 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-12 10:56:51,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:51,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 2732 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-12 10:56:51,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:56:51,584 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2022-07-12 10:56:51,584 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:56:51,584 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1506579723] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:56:51,584 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:56:51,585 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [6] total 6 [2022-07-12 10:56:51,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190608518] [2022-07-12 10:56:51,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:56:51,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-12 10:56:51,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:56:51,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-12 10:56:51,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-12 10:56:51,586 INFO L87 Difference]: Start difference. First operand 262 states and 329 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 10:56:51,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:56:51,617 INFO L93 Difference]: Finished difference Result 488 states and 627 transitions. [2022-07-12 10:56:51,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-12 10:56:51,618 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 125 [2022-07-12 10:56:51,618 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:56:51,619 INFO L225 Difference]: With dead ends: 488 [2022-07-12 10:56:51,620 INFO L226 Difference]: Without dead ends: 259 [2022-07-12 10:56:51,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 154 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 10:56:51,621 INFO L413 NwaCegarLoop]: 233 mSDtfsCounter, 26 mSDsluCounter, 424 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 657 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 10:56:51,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 657 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 10:56:51,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 259 states. [2022-07-12 10:56:51,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 259 to 252. [2022-07-12 10:56:51,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 169 states have (on average 1.1124260355029585) internal successors, (188), 173 states have internal predecessors, (188), 56 states have call successors, (56), 23 states have call predecessors, (56), 26 states have return successors, (71), 55 states have call predecessors, (71), 55 states have call successors, (71) [2022-07-12 10:56:51,635 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 315 transitions. [2022-07-12 10:56:51,635 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 315 transitions. Word has length 125 [2022-07-12 10:56:51,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:56:51,636 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 315 transitions. [2022-07-12 10:56:51,636 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-12 10:56:51,636 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 315 transitions. [2022-07-12 10:56:51,637 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-12 10:56:51,637 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:56:51,637 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 10:56:51,667 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-07-12 10:56:51,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-12 10:56:51,863 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:56:51,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:56:51,864 INFO L85 PathProgramCache]: Analyzing trace with hash -308974545, now seen corresponding path program 1 times [2022-07-12 10:56:51,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:56:51,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [626728127] [2022-07-12 10:56:51,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:56:51,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:56:51,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:52,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:56:52,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:52,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:56:52,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:52,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:56:52,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:52,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:52,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:52,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:56:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:52,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:56:52,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:52,055 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:56:52,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:52,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:52,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:52,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 10:56:52,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:52,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:56:52,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:52,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 10:56:52,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:52,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 10:56:52,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:52,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 10:56:52,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:52,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-12 10:56:52,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:52,181 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 102 trivial. 0 not checked. [2022-07-12 10:56:52,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:56:52,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [626728127] [2022-07-12 10:56:52,181 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [626728127] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:56:52,181 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [173632495] [2022-07-12 10:56:52,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:56:52,181 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:56:52,182 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:56:52,183 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:56:52,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-12 10:56:52,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:52,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 2727 conjuncts, 39 conjunts are in the unsatisfiable core [2022-07-12 10:56:52,705 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:56:52,787 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-12 10:56:53,268 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 16 treesize of output 8 [2022-07-12 10:56:53,284 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 61 proven. 2 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-12 10:56:53,284 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:56:53,376 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 34 [2022-07-12 10:56:53,460 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 103 trivial. 0 not checked. [2022-07-12 10:56:53,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [173632495] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-12 10:56:53,460 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-12 10:56:53,460 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 8] total 20 [2022-07-12 10:56:53,460 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17858461] [2022-07-12 10:56:53,460 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-12 10:56:53,461 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2022-07-12 10:56:53,461 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:56:53,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2022-07-12 10:56:53,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=330, Unknown=0, NotChecked=0, Total=380 [2022-07-12 10:56:53,462 INFO L87 Difference]: Start difference. First operand 252 states and 315 transitions. Second operand has 20 states, 20 states have (on average 7.0) internal successors, (140), 16 states have internal predecessors, (140), 10 states have call successors, (37), 5 states have call predecessors, (37), 5 states have return successors, (36), 12 states have call predecessors, (36), 10 states have call successors, (36) [2022-07-12 10:56:55,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:56:55,126 INFO L93 Difference]: Finished difference Result 461 states and 586 transitions. [2022-07-12 10:56:55,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-07-12 10:56:55,127 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 7.0) internal successors, (140), 16 states have internal predecessors, (140), 10 states have call successors, (37), 5 states have call predecessors, (37), 5 states have return successors, (36), 12 states have call predecessors, (36), 10 states have call successors, (36) Word has length 125 [2022-07-12 10:56:55,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:56:55,129 INFO L225 Difference]: With dead ends: 461 [2022-07-12 10:56:55,129 INFO L226 Difference]: Without dead ends: 346 [2022-07-12 10:56:55,130 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 252 SyntacticMatches, 13 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 192 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=112, Invalid=818, Unknown=0, NotChecked=0, Total=930 [2022-07-12 10:56:55,130 INFO L413 NwaCegarLoop]: 231 mSDtfsCounter, 219 mSDsluCounter, 1105 mSDsCounter, 0 mSdLazyCounter, 2044 mSolverCounterSat, 177 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 249 SdHoareTripleChecker+Valid, 1336 SdHoareTripleChecker+Invalid, 2547 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 177 IncrementalHoareTripleChecker+Valid, 2044 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 326 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-12 10:56:55,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [249 Valid, 1336 Invalid, 2547 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [177 Valid, 2044 Invalid, 0 Unknown, 326 Unchecked, 1.4s Time] [2022-07-12 10:56:55,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 346 states. [2022-07-12 10:56:55,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 346 to 277. [2022-07-12 10:56:55,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 193 states have (on average 1.1139896373056994) internal successors, (215), 197 states have internal predecessors, (215), 56 states have call successors, (56), 23 states have call predecessors, (56), 27 states have return successors, (68), 56 states have call predecessors, (68), 55 states have call successors, (68) [2022-07-12 10:56:55,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 339 transitions. [2022-07-12 10:56:55,146 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 339 transitions. Word has length 125 [2022-07-12 10:56:55,146 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:56:55,146 INFO L495 AbstractCegarLoop]: Abstraction has 277 states and 339 transitions. [2022-07-12 10:56:55,147 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.0) internal successors, (140), 16 states have internal predecessors, (140), 10 states have call successors, (37), 5 states have call predecessors, (37), 5 states have return successors, (36), 12 states have call predecessors, (36), 10 states have call successors, (36) [2022-07-12 10:56:55,147 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 339 transitions. [2022-07-12 10:56:55,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-12 10:56:55,148 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:56:55,148 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 10:56:55,179 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-12 10:56:55,363 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-12 10:56:55,363 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:56:55,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:56:55,364 INFO L85 PathProgramCache]: Analyzing trace with hash -564182680, now seen corresponding path program 1 times [2022-07-12 10:56:55,364 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:56:55,364 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1725083152] [2022-07-12 10:56:55,364 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:56:55,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:56:55,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:55,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:56:55,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:55,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:56:55,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:55,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:56:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:55,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:55,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:55,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:56:55,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:55,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 10:56:55,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:55,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-12 10:56:55,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:55,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:55,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:55,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 10:56:55,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:55,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 10:56:55,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:55,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 10:56:55,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:55,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 10:56:55,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:55,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 10:56:55,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:55,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 10:56:55,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:55,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-12 10:56:55,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:55,731 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-07-12 10:56:55,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:56:55,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1725083152] [2022-07-12 10:56:55,732 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1725083152] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:56:55,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1120659958] [2022-07-12 10:56:55,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:56:55,732 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:56:55,732 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:56:55,736 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:56:55,737 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-12 10:56:56,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:56,233 INFO L263 TraceCheckSpWp]: Trace formula consists of 2784 conjuncts, 26 conjunts are in the unsatisfiable core [2022-07-12 10:56:56,237 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:56:56,329 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2022-07-12 10:56:56,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:56:56,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1120659958] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:56:56,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:56:56,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9] total 16 [2022-07-12 10:56:56,330 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96637312] [2022-07-12 10:56:56,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:56:56,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:56:56,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:56:56,331 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:56:56,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-07-12 10:56:56,331 INFO L87 Difference]: Start difference. First operand 277 states and 339 transitions. Second operand has 9 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-12 10:56:56,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:56:56,484 INFO L93 Difference]: Finished difference Result 544 states and 659 transitions. [2022-07-12 10:56:56,484 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 10:56:56,485 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 131 [2022-07-12 10:56:56,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:56:56,486 INFO L225 Difference]: With dead ends: 544 [2022-07-12 10:56:56,486 INFO L226 Difference]: Without dead ends: 263 [2022-07-12 10:56:56,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 152 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2022-07-12 10:56:56,488 INFO L413 NwaCegarLoop]: 212 mSDtfsCounter, 12 mSDsluCounter, 1416 mSDsCounter, 0 mSdLazyCounter, 175 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 1628 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 175 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-12 10:56:56,488 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 1628 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 175 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-12 10:56:56,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 263 states. [2022-07-12 10:56:56,500 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 263 to 263. [2022-07-12 10:56:56,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 263 states, 180 states have (on average 1.1) internal successors, (198), 183 states have internal predecessors, (198), 56 states have call successors, (56), 23 states have call predecessors, (56), 26 states have return successors, (67), 56 states have call predecessors, (67), 55 states have call successors, (67) [2022-07-12 10:56:56,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 321 transitions. [2022-07-12 10:56:56,502 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 321 transitions. Word has length 131 [2022-07-12 10:56:56,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:56:56,502 INFO L495 AbstractCegarLoop]: Abstraction has 263 states and 321 transitions. [2022-07-12 10:56:56,502 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 9.625) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-12 10:56:56,503 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 321 transitions. [2022-07-12 10:56:56,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-12 10:56:56,504 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:56:56,504 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 10:56:56,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-12 10:56:56,717 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:56:56,717 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:56:56,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:56:56,718 INFO L85 PathProgramCache]: Analyzing trace with hash 418439313, now seen corresponding path program 1 times [2022-07-12 10:56:56,718 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:56:56,718 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1222937710] [2022-07-12 10:56:56,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:56:56,718 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:56:56,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:56,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:56:56,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:56,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:56:56,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:56,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:56:56,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:56,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:56,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:56,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:56:56,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:56,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:56:56,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:56,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:56:56,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:56,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:56,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:56,906 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 10:56:56,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:56,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:56:56,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:56,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 10:56:56,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:56,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 10:56:56,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:56,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 10:56:56,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:56,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 10:56:56,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:57,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 10:56:57,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:57,059 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-07-12 10:56:57,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:56:57,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1222937710] [2022-07-12 10:56:57,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1222937710] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:56:57,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [441086702] [2022-07-12 10:56:57,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:56:57,059 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:56:57,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:56:57,061 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:56:57,062 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-12 10:56:57,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:57,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 2791 conjuncts, 28 conjunts are in the unsatisfiable core [2022-07-12 10:56:57,540 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:56:57,581 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 [2022-07-12 10:56:57,885 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 17 treesize of output 9 [2022-07-12 10:56:57,901 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 95 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2022-07-12 10:56:57,901 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 10:56:57,902 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [441086702] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:56:57,902 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 10:56:57,902 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [9] total 17 [2022-07-12 10:56:57,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [101941196] [2022-07-12 10:56:57,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:56:57,902 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:56:57,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:56:57,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:56:57,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2022-07-12 10:56:57,903 INFO L87 Difference]: Start difference. First operand 263 states and 321 transitions. Second operand has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 6 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2022-07-12 10:56:58,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:56:58,406 INFO L93 Difference]: Finished difference Result 512 states and 650 transitions. [2022-07-12 10:56:58,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 10:56:58,406 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 6 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) Word has length 133 [2022-07-12 10:56:58,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:56:58,408 INFO L225 Difference]: With dead ends: 512 [2022-07-12 10:56:58,408 INFO L226 Difference]: Without dead ends: 334 [2022-07-12 10:56:58,409 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 148 SyntacticMatches, 5 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=438, Unknown=0, NotChecked=0, Total=506 [2022-07-12 10:56:58,410 INFO L413 NwaCegarLoop]: 269 mSDtfsCounter, 168 mSDsluCounter, 1357 mSDsCounter, 0 mSdLazyCounter, 329 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 197 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 466 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 329 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 63 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 10:56:58,410 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [197 Valid, 1626 Invalid, 466 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [74 Valid, 329 Invalid, 0 Unknown, 63 Unchecked, 0.4s Time] [2022-07-12 10:56:58,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2022-07-12 10:56:58,429 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 269. [2022-07-12 10:56:58,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 269 states, 185 states have (on average 1.0972972972972972) internal successors, (203), 189 states have internal predecessors, (203), 56 states have call successors, (56), 23 states have call predecessors, (56), 27 states have return successors, (72), 56 states have call predecessors, (72), 55 states have call successors, (72) [2022-07-12 10:56:58,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 331 transitions. [2022-07-12 10:56:58,431 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 331 transitions. Word has length 133 [2022-07-12 10:56:58,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:56:58,432 INFO L495 AbstractCegarLoop]: Abstraction has 269 states and 331 transitions. [2022-07-12 10:56:58,432 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.9) internal successors, (79), 10 states have internal predecessors, (79), 6 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 6 states have call predecessors, (15), 6 states have call successors, (15) [2022-07-12 10:56:58,432 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 331 transitions. [2022-07-12 10:56:58,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-12 10:56:58,434 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:56:58,434 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 10:56:58,465 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-12 10:56:58,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-12 10:56:58,649 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:56:58,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:56:58,649 INFO L85 PathProgramCache]: Analyzing trace with hash 1769824531, now seen corresponding path program 1 times [2022-07-12 10:56:58,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:56:58,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944605256] [2022-07-12 10:56:58,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:56:58,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:56:58,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:58,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:56:58,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:58,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:56:58,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:58,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:56:58,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:58,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:58,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:58,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:56:58,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:58,824 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:56:58,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:58,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:56:58,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:58,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:56:58,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:58,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 10:56:58,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:58,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:56:58,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:58,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 10:56:58,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:58,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 10:56:58,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:58,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 10:56:58,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:58,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 10:56:58,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:59,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 10:56:59,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:59,015 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2022-07-12 10:56:59,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:56:59,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944605256] [2022-07-12 10:56:59,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944605256] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:56:59,016 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371478854] [2022-07-12 10:56:59,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:56:59,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:56:59,016 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:56:59,020 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:56:59,042 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-12 10:56:59,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:56:59,480 INFO L263 TraceCheckSpWp]: Trace formula consists of 2796 conjuncts, 65 conjunts are in the unsatisfiable core [2022-07-12 10:56:59,485 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:56:59,495 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 10:56:59,674 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-12 10:56:59,675 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-12 10:56:59,707 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-12 10:56:59,949 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 [2022-07-12 10:57:09,559 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-12 10:57:09,559 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-07-12 10:57:09,677 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-12 10:57:09,678 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-12 10:57:09,715 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 27 treesize of output 27 [2022-07-12 10:57:15,314 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 27 treesize of output 27 [2022-07-12 10:57:31,293 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 53 proven. 49 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-12 10:57:31,293 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:57:31,510 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_1836 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_save_byte_from_array_~storage#1.base| v_ArrVal_1836) |c_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.offset| 8)) 0))) is different from false [2022-07-12 10:57:31,516 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371478854] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:31,516 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:57:31,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 20] total 27 [2022-07-12 10:57:31,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1070041177] [2022-07-12 10:57:31,516 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 10:57:31,517 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2022-07-12 10:57:31,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:57:31,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2022-07-12 10:57:31,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=949, Unknown=2, NotChecked=62, Total=1122 [2022-07-12 10:57:31,518 INFO L87 Difference]: Start difference. First operand 269 states and 331 transitions. Second operand has 27 states, 26 states have (on average 5.5) internal successors, (143), 24 states have internal predecessors, (143), 9 states have call successors, (30), 9 states have call predecessors, (30), 9 states have return successors, (29), 10 states have call predecessors, (29), 9 states have call successors, (29) [2022-07-12 10:57:47,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:57:47,368 INFO L93 Difference]: Finished difference Result 571 states and 679 transitions. [2022-07-12 10:57:47,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-12 10:57:47,368 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 5.5) internal successors, (143), 24 states have internal predecessors, (143), 9 states have call successors, (30), 9 states have call predecessors, (30), 9 states have return successors, (29), 10 states have call predecessors, (29), 9 states have call successors, (29) Word has length 133 [2022-07-12 10:57:47,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:57:47,370 INFO L225 Difference]: With dead ends: 571 [2022-07-12 10:57:47,370 INFO L226 Difference]: Without dead ends: 374 [2022-07-12 10:57:47,372 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 188 SyntacticMatches, 17 SemanticMatches, 48 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 637 ImplicationChecksByTransitivity, 46.4s TimeCoverageRelationStatistics Valid=239, Invalid=2112, Unknown=5, NotChecked=94, Total=2450 [2022-07-12 10:57:47,372 INFO L413 NwaCegarLoop]: 208 mSDtfsCounter, 297 mSDsluCounter, 1128 mSDsCounter, 0 mSdLazyCounter, 949 mSolverCounterSat, 212 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 300 SdHoareTripleChecker+Valid, 1336 SdHoareTripleChecker+Invalid, 2635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 212 IncrementalHoareTripleChecker+Valid, 949 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1474 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 10:57:47,372 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [300 Valid, 1336 Invalid, 2635 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [212 Valid, 949 Invalid, 0 Unknown, 1474 Unchecked, 0.8s Time] [2022-07-12 10:57:47,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 374 states. [2022-07-12 10:57:47,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 374 to 345. [2022-07-12 10:57:47,390 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 345 states, 243 states have (on average 1.0823045267489713) internal successors, (263), 246 states have internal predecessors, (263), 63 states have call successors, (63), 35 states have call predecessors, (63), 38 states have return successors, (79), 63 states have call predecessors, (79), 62 states have call successors, (79) [2022-07-12 10:57:47,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 345 states to 345 states and 405 transitions. [2022-07-12 10:57:47,392 INFO L78 Accepts]: Start accepts. Automaton has 345 states and 405 transitions. Word has length 133 [2022-07-12 10:57:47,392 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:57:47,392 INFO L495 AbstractCegarLoop]: Abstraction has 345 states and 405 transitions. [2022-07-12 10:57:47,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 5.5) internal successors, (143), 24 states have internal predecessors, (143), 9 states have call successors, (30), 9 states have call predecessors, (30), 9 states have return successors, (29), 10 states have call predecessors, (29), 9 states have call successors, (29) [2022-07-12 10:57:47,392 INFO L276 IsEmpty]: Start isEmpty. Operand 345 states and 405 transitions. [2022-07-12 10:57:47,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-12 10:57:47,393 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:57:47,394 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 10:57:47,425 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-12 10:57:47,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-12 10:57:47,608 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:57:47,608 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:57:47,608 INFO L85 PathProgramCache]: Analyzing trace with hash 1405584563, now seen corresponding path program 1 times [2022-07-12 10:57:47,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:57:47,608 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1074437548] [2022-07-12 10:57:47,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:47,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:57:47,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:47,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:57:47,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:47,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:57:47,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:47,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:57:47,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:47,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:47,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:47,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:57:47,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:47,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:57:47,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:47,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:57:47,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:47,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:57:47,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:47,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 10:57:47,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:47,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:57:47,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:47,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 10:57:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:47,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 10:57:47,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:47,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 10:57:47,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:47,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 10:57:47,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:47,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 10:57:47,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:48,003 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-12 10:57:48,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:57:48,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1074437548] [2022-07-12 10:57:48,004 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1074437548] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:57:48,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351627402] [2022-07-12 10:57:48,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:57:48,004 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:57:48,004 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:57:48,005 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 10:57:48,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-12 10:57:48,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:57:48,507 INFO L263 TraceCheckSpWp]: Trace formula consists of 2824 conjuncts, 70 conjunts are in the unsatisfiable core [2022-07-12 10:57:48,511 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:57:48,524 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 10:57:48,700 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-12 10:57:48,700 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-07-12 10:57:48,727 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 [2022-07-12 10:57:49,081 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 [2022-07-12 10:57:55,305 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-12 10:57:55,305 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 12 treesize of output 14 [2022-07-12 10:57:55,478 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-12 10:57:55,478 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-12 10:57:55,514 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-07-12 10:57:57,607 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 19 [2022-07-12 10:58:04,112 INFO L134 CoverageAnalysis]: Checked inductivity of 146 backedges. 59 proven. 53 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-12 10:58:04,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:58:04,367 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2038 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_save_byte_from_array_~storage#1.base| v_ArrVal_2038) |c_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base|) |c_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.offset|) 18446744073709551616) 0))) is different from false [2022-07-12 10:58:04,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351627402] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:58:04,376 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:58:04,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 21] total 29 [2022-07-12 10:58:04,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530271902] [2022-07-12 10:58:04,377 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 10:58:04,377 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-07-12 10:58:04,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:58:04,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-07-12 10:58:04,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=110, Invalid=1013, Unknown=3, NotChecked=64, Total=1190 [2022-07-12 10:58:04,378 INFO L87 Difference]: Start difference. First operand 345 states and 405 transitions. Second operand has 29 states, 28 states have (on average 5.357142857142857) internal successors, (150), 27 states have internal predecessors, (150), 9 states have call successors, (30), 9 states have call predecessors, (30), 10 states have return successors, (29), 9 states have call predecessors, (29), 9 states have call successors, (29) [2022-07-12 10:58:24,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:58:24,149 INFO L93 Difference]: Finished difference Result 657 states and 781 transitions. [2022-07-12 10:58:24,150 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-07-12 10:58:24,150 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 28 states have (on average 5.357142857142857) internal successors, (150), 27 states have internal predecessors, (150), 9 states have call successors, (30), 9 states have call predecessors, (30), 10 states have return successors, (29), 9 states have call predecessors, (29), 9 states have call successors, (29) Word has length 140 [2022-07-12 10:58:24,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:58:24,152 INFO L225 Difference]: With dead ends: 657 [2022-07-12 10:58:24,152 INFO L226 Difference]: Without dead ends: 454 [2022-07-12 10:58:24,154 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 272 GetRequests, 203 SyntacticMatches, 19 SemanticMatches, 50 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 720 ImplicationChecksByTransitivity, 34.0s TimeCoverageRelationStatistics Valid=255, Invalid=2290, Unknown=9, NotChecked=98, Total=2652 [2022-07-12 10:58:24,154 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 231 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 1325 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 1508 SdHoareTripleChecker+Invalid, 2977 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 1325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1501 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-07-12 10:58:24,154 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 1508 Invalid, 2977 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 1325 Invalid, 0 Unknown, 1501 Unchecked, 1.0s Time] [2022-07-12 10:58:24,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 454 states. [2022-07-12 10:58:24,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 454 to 420. [2022-07-12 10:58:24,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 420 states, 299 states have (on average 1.080267558528428) internal successors, (323), 302 states have internal predecessors, (323), 76 states have call successors, (76), 43 states have call predecessors, (76), 44 states have return successors, (94), 74 states have call predecessors, (94), 75 states have call successors, (94) [2022-07-12 10:58:24,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 420 states to 420 states and 493 transitions. [2022-07-12 10:58:24,181 INFO L78 Accepts]: Start accepts. Automaton has 420 states and 493 transitions. Word has length 140 [2022-07-12 10:58:24,181 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:58:24,181 INFO L495 AbstractCegarLoop]: Abstraction has 420 states and 493 transitions. [2022-07-12 10:58:24,181 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 28 states have (on average 5.357142857142857) internal successors, (150), 27 states have internal predecessors, (150), 9 states have call successors, (30), 9 states have call predecessors, (30), 10 states have return successors, (29), 9 states have call predecessors, (29), 9 states have call successors, (29) [2022-07-12 10:58:24,182 INFO L276 IsEmpty]: Start isEmpty. Operand 420 states and 493 transitions. [2022-07-12 10:58:24,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-12 10:58:24,183 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:58:24,183 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 7, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2022-07-12 10:58:24,213 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2022-07-12 10:58:24,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:58:24,399 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:58:24,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:58:24,400 INFO L85 PathProgramCache]: Analyzing trace with hash -2053572832, now seen corresponding path program 1 times [2022-07-12 10:58:24,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:58:24,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047712563] [2022-07-12 10:58:24,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:24,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:58:24,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:24,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:58:24,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:24,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:58:24,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:24,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:58:24,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:24,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:24,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:24,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:58:24,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:24,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:58:24,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:24,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:58:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:24,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:58:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:24,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 10:58:24,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:24,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:58:24,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:24,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 10:58:24,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:24,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 10:58:24,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:24,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 10:58:24,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:24,649 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-12 10:58:24,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:24,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-12 10:58:24,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:24,833 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-07-12 10:58:24,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:58:24,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047712563] [2022-07-12 10:58:24,834 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047712563] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:58:24,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1427558670] [2022-07-12 10:58:24,834 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:58:24,834 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:58:24,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:58:24,836 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) [2022-07-12 10:58:24,837 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-12 10:58:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:58:25,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 2848 conjuncts, 60 conjunts are in the unsatisfiable core [2022-07-12 10:58:25,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:58:25,439 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-12 10:58:25,645 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 [2022-07-12 10:58:25,724 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-12 10:58:25,724 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-12 10:58:25,763 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-12 10:58:26,138 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 [2022-07-12 10:58:34,383 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:58:34,384 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 [2022-07-12 10:58:34,547 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-12 10:58:34,548 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2022-07-12 10:58:34,593 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 27 treesize of output 27 [2022-07-12 10:58:40,727 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 27 treesize of output 27 [2022-07-12 10:59:04,443 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 24 treesize of output 12 [2022-07-12 10:59:04,466 INFO L134 CoverageAnalysis]: Checked inductivity of 151 backedges. 57 proven. 67 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-12 10:59:04,466 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:59:04,552 WARN L833 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_2265 (Array Int Int))) (not (= (select (select (store |c_#memory_$Pointer$.base| |c_ULTIMATE.start_save_byte_from_array_~storage#1.base| v_ArrVal_2265) |c_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.base|) (+ |c_ULTIMATE.start_aws_byte_buf_init_copy_harness_~#src~0#1.offset| 8)) 0))) is different from false [2022-07-12 10:59:04,557 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1427558670] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:59:04,557 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:59:04,557 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 20] total 29 [2022-07-12 10:59:04,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217186174] [2022-07-12 10:59:04,557 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 10:59:04,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-07-12 10:59:04,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:59:04,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-07-12 10:59:04,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=824, Unknown=6, NotChecked=58, Total=992 [2022-07-12 10:59:04,558 INFO L87 Difference]: Start difference. First operand 420 states and 493 transitions. Second operand has 29 states, 29 states have (on average 5.275862068965517) internal successors, (153), 26 states have internal predecessors, (153), 10 states have call successors, (30), 11 states have call predecessors, (30), 10 states have return successors, (29), 11 states have call predecessors, (29), 10 states have call successors, (29) [2022-07-12 10:59:13,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:59:13,303 INFO L93 Difference]: Finished difference Result 585 states and 678 transitions. [2022-07-12 10:59:13,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2022-07-12 10:59:13,304 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 5.275862068965517) internal successors, (153), 26 states have internal predecessors, (153), 10 states have call successors, (30), 11 states have call predecessors, (30), 10 states have return successors, (29), 11 states have call predecessors, (29), 10 states have call successors, (29) Word has length 141 [2022-07-12 10:59:13,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:59:13,306 INFO L225 Difference]: With dead ends: 585 [2022-07-12 10:59:13,306 INFO L226 Difference]: Without dead ends: 462 [2022-07-12 10:59:13,307 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 210 SyntacticMatches, 15 SemanticMatches, 41 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 433 ImplicationChecksByTransitivity, 46.4s TimeCoverageRelationStatistics Valid=197, Invalid=1521, Unknown=8, NotChecked=80, Total=1806 [2022-07-12 10:59:13,307 INFO L413 NwaCegarLoop]: 179 mSDtfsCounter, 273 mSDsluCounter, 966 mSDsCounter, 0 mSdLazyCounter, 1018 mSolverCounterSat, 200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 1145 SdHoareTripleChecker+Invalid, 2009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 200 IncrementalHoareTripleChecker+Valid, 1018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 791 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-07-12 10:59:13,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 1145 Invalid, 2009 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [200 Valid, 1018 Invalid, 0 Unknown, 791 Unchecked, 0.8s Time] [2022-07-12 10:59:13,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462 states. [2022-07-12 10:59:13,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462 to 406. [2022-07-12 10:59:13,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 406 states, 291 states have (on average 1.0721649484536082) internal successors, (312), 297 states have internal predecessors, (312), 70 states have call successors, (70), 41 states have call predecessors, (70), 44 states have return successors, (78), 67 states have call predecessors, (78), 69 states have call successors, (78) [2022-07-12 10:59:13,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 406 states to 406 states and 460 transitions. [2022-07-12 10:59:13,331 INFO L78 Accepts]: Start accepts. Automaton has 406 states and 460 transitions. Word has length 141 [2022-07-12 10:59:13,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:59:13,331 INFO L495 AbstractCegarLoop]: Abstraction has 406 states and 460 transitions. [2022-07-12 10:59:13,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.275862068965517) internal successors, (153), 26 states have internal predecessors, (153), 10 states have call successors, (30), 11 states have call predecessors, (30), 10 states have return successors, (29), 11 states have call predecessors, (29), 10 states have call successors, (29) [2022-07-12 10:59:13,332 INFO L276 IsEmpty]: Start isEmpty. Operand 406 states and 460 transitions. [2022-07-12 10:59:13,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 184 [2022-07-12 10:59:13,333 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:59:13,334 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:59:13,355 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-07-12 10:59:13,539 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:59:13,539 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:59:13,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:59:13,540 INFO L85 PathProgramCache]: Analyzing trace with hash 1088816893, now seen corresponding path program 1 times [2022-07-12 10:59:13,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:59:13,540 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444281365] [2022-07-12 10:59:13,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:59:13,540 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:59:13,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:13,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:59:13,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:13,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:59:13,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:13,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 10:59:13,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:13,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 10:59:13,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:13,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:13,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:13,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 10:59:13,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:13,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 10:59:13,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:13,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 10:59:13,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:13,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:13,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:13,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 10:59:13,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:13,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 10:59:13,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:13,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 10:59:13,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:13,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 10:59:13,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:13,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 10:59:13,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:13,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:13,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:13,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:13,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:13,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 10:59:13,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:13,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 10:59:13,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:13,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 10:59:13,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:13,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:13,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:13,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2022-07-12 10:59:13,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:13,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:13,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:13,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:13,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:13,993 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:59:13,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:13,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 10:59:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:14,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 167 [2022-07-12 10:59:14,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:14,010 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2022-07-12 10:59:14,010 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:59:14,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444281365] [2022-07-12 10:59:14,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444281365] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:59:14,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:59:14,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 10:59:14,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088540450] [2022-07-12 10:59:14,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:59:14,012 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 10:59:14,012 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:59:14,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 10:59:14,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 10:59:14,013 INFO L87 Difference]: Start difference. First operand 406 states and 460 transitions. Second operand has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (26), 5 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-12 10:59:14,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:59:14,857 INFO L93 Difference]: Finished difference Result 535 states and 616 transitions. [2022-07-12 10:59:14,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 10:59:14,857 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (26), 5 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) Word has length 183 [2022-07-12 10:59:14,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:59:14,859 INFO L225 Difference]: With dead ends: 535 [2022-07-12 10:59:14,859 INFO L226 Difference]: Without dead ends: 426 [2022-07-12 10:59:14,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2022-07-12 10:59:14,861 INFO L413 NwaCegarLoop]: 176 mSDtfsCounter, 156 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 706 mSolverCounterSat, 128 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 572 SdHoareTripleChecker+Invalid, 834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 128 IncrementalHoareTripleChecker+Valid, 706 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 10:59:14,861 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 572 Invalid, 834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [128 Valid, 706 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 10:59:14,861 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 426 states. [2022-07-12 10:59:14,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 426 to 411. [2022-07-12 10:59:14,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 411 states, 295 states have (on average 1.071186440677966) internal successors, (316), 301 states have internal predecessors, (316), 70 states have call successors, (70), 41 states have call predecessors, (70), 45 states have return successors, (79), 68 states have call predecessors, (79), 69 states have call successors, (79) [2022-07-12 10:59:14,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 411 states to 411 states and 465 transitions. [2022-07-12 10:59:14,889 INFO L78 Accepts]: Start accepts. Automaton has 411 states and 465 transitions. Word has length 183 [2022-07-12 10:59:14,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:59:14,891 INFO L495 AbstractCegarLoop]: Abstraction has 411 states and 465 transitions. [2022-07-12 10:59:14,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.222222222222221) internal successors, (74), 5 states have internal predecessors, (74), 2 states have call successors, (26), 5 states have call predecessors, (26), 3 states have return successors, (25), 3 states have call predecessors, (25), 2 states have call successors, (25) [2022-07-12 10:59:14,891 INFO L276 IsEmpty]: Start isEmpty. Operand 411 states and 465 transitions. [2022-07-12 10:59:14,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-12 10:59:14,896 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:59:14,897 INFO L195 NwaCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:59:14,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 10:59:14,897 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:59:14,897 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:59:14,898 INFO L85 PathProgramCache]: Analyzing trace with hash -508799490, now seen corresponding path program 1 times [2022-07-12 10:59:14,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:59:14,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842756352] [2022-07-12 10:59:14,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:59:14,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:59:14,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:15,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:59:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:15,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:59:15,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:15,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-12 10:59:15,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:15,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-12 10:59:15,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:15,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:15,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:15,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-12 10:59:15,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:15,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 10:59:15,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:15,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 10:59:15,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:15,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:15,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:15,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 10:59:15,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:15,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 10:59:15,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:15,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 10:59:15,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:15,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 10:59:15,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:15,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-12 10:59:15,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:15,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:15,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:15,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:15,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:15,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 10:59:15,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:15,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 10:59:15,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:15,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 10:59:15,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:15,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:15,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:15,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-12 10:59:15,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:15,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-12 10:59:15,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:15,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:15,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:15,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:15,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:15,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:59:15,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:15,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 10:59:15,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:15,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-12 10:59:15,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:15,297 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 270 trivial. 0 not checked. [2022-07-12 10:59:15,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:59:15,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842756352] [2022-07-12 10:59:15,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [842756352] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:59:15,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:59:15,298 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 10:59:15,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1305538055] [2022-07-12 10:59:15,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:59:15,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 10:59:15,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:59:15,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 10:59:15,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 10:59:15,299 INFO L87 Difference]: Start difference. First operand 411 states and 465 transitions. Second operand has 10 states, 10 states have (on average 7.8) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) [2022-07-12 10:59:16,078 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:59:16,079 INFO L93 Difference]: Finished difference Result 532 states and 612 transitions. [2022-07-12 10:59:16,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 10:59:16,080 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) Word has length 189 [2022-07-12 10:59:16,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:59:16,082 INFO L225 Difference]: With dead ends: 532 [2022-07-12 10:59:16,082 INFO L226 Difference]: Without dead ends: 407 [2022-07-12 10:59:16,083 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2022-07-12 10:59:16,083 INFO L413 NwaCegarLoop]: 181 mSDtfsCounter, 237 mSDsluCounter, 389 mSDsCounter, 0 mSdLazyCounter, 719 mSolverCounterSat, 180 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 237 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 899 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 180 IncrementalHoareTripleChecker+Valid, 719 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-07-12 10:59:16,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [237 Valid, 570 Invalid, 899 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [180 Valid, 719 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-07-12 10:59:16,084 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 407 states. [2022-07-12 10:59:16,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 407 to 400. [2022-07-12 10:59:16,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 400 states, 287 states have (on average 1.0662020905923344) internal successors, (306), 293 states have internal predecessors, (306), 69 states have call successors, (69), 40 states have call predecessors, (69), 43 states have return successors, (77), 66 states have call predecessors, (77), 68 states have call successors, (77) [2022-07-12 10:59:16,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 400 states to 400 states and 452 transitions. [2022-07-12 10:59:16,105 INFO L78 Accepts]: Start accepts. Automaton has 400 states and 452 transitions. Word has length 189 [2022-07-12 10:59:16,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:59:16,105 INFO L495 AbstractCegarLoop]: Abstraction has 400 states and 452 transitions. [2022-07-12 10:59:16,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.8) internal successors, (78), 5 states have internal predecessors, (78), 3 states have call successors, (27), 6 states have call predecessors, (27), 2 states have return successors, (26), 4 states have call predecessors, (26), 3 states have call successors, (26) [2022-07-12 10:59:16,106 INFO L276 IsEmpty]: Start isEmpty. Operand 400 states and 452 transitions. [2022-07-12 10:59:16,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-12 10:59:16,107 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:59:16,107 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:59:16,107 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-12 10:59:16,107 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:59:16,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:59:16,108 INFO L85 PathProgramCache]: Analyzing trace with hash -1874827005, now seen corresponding path program 1 times [2022-07-12 10:59:16,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:59:16,108 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1040693031] [2022-07-12 10:59:16,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:59:16,108 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:59:16,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:16,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:59:16,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:16,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:59:16,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:16,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:59:16,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:16,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:16,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:16,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:59:16,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:16,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:59:16,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:16,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:59:16,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:16,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:16,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:16,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 10:59:16,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:16,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:59:16,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:16,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 10:59:16,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:16,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 10:59:16,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:16,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 10:59:16,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:16,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:16,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:16,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:16,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:16,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 10:59:16,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:16,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 10:59:16,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:16,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 10:59:16,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:16,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:16,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:16,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:59:16,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:16,419 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:16,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:16,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-12 10:59:16,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:16,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:16,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:16,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:16,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:16,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:59:16,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:16,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 10:59:16,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:16,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-12 10:59:16,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:16,509 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 0 not checked. [2022-07-12 10:59:16,509 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:59:16,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1040693031] [2022-07-12 10:59:16,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1040693031] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 10:59:16,509 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 10:59:16,510 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-12 10:59:16,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677571754] [2022-07-12 10:59:16,510 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 10:59:16,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-12 10:59:16,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:59:16,511 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-12 10:59:16,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 10:59:16,511 INFO L87 Difference]: Start difference. First operand 400 states and 452 transitions. Second operand has 11 states, 10 states have (on average 7.8) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (26), 5 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 1 states have call successors, (25) [2022-07-12 10:59:17,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:59:17,338 INFO L93 Difference]: Finished difference Result 419 states and 474 transitions. [2022-07-12 10:59:17,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 10:59:17,339 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 7.8) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (26), 5 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 1 states have call successors, (25) Word has length 189 [2022-07-12 10:59:17,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:59:17,341 INFO L225 Difference]: With dead ends: 419 [2022-07-12 10:59:17,341 INFO L226 Difference]: Without dead ends: 417 [2022-07-12 10:59:17,365 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=208, Unknown=0, NotChecked=0, Total=272 [2022-07-12 10:59:17,366 INFO L413 NwaCegarLoop]: 169 mSDtfsCounter, 159 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 912 mSolverCounterSat, 119 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 160 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 1031 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 119 IncrementalHoareTripleChecker+Valid, 912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-07-12 10:59:17,366 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [160 Valid, 696 Invalid, 1031 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [119 Valid, 912 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-07-12 10:59:17,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 417 states. [2022-07-12 10:59:17,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 417 to 409. [2022-07-12 10:59:17,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 409 states, 293 states have (on average 1.0648464163822526) internal successors, (312), 300 states have internal predecessors, (312), 70 states have call successors, (70), 41 states have call predecessors, (70), 45 states have return successors, (81), 67 states have call predecessors, (81), 69 states have call successors, (81) [2022-07-12 10:59:17,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 409 states to 409 states and 463 transitions. [2022-07-12 10:59:17,390 INFO L78 Accepts]: Start accepts. Automaton has 409 states and 463 transitions. Word has length 189 [2022-07-12 10:59:17,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:59:17,390 INFO L495 AbstractCegarLoop]: Abstraction has 409 states and 463 transitions. [2022-07-12 10:59:17,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 7.8) internal successors, (78), 6 states have internal predecessors, (78), 2 states have call successors, (26), 5 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 1 states have call successors, (25) [2022-07-12 10:59:17,390 INFO L276 IsEmpty]: Start isEmpty. Operand 409 states and 463 transitions. [2022-07-12 10:59:17,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2022-07-12 10:59:17,392 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:59:17,392 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:59:17,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-12 10:59:17,392 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:59:17,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:59:17,393 INFO L85 PathProgramCache]: Analyzing trace with hash -1285146295, now seen corresponding path program 1 times [2022-07-12 10:59:17,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:59:17,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048463438] [2022-07-12 10:59:17,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:59:17,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:59:17,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:17,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:59:17,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:17,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:59:17,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:17,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:59:17,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:17,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:17,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:17,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:59:17,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:17,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 10:59:17,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:17,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:59:17,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:17,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:17,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:17,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 10:59:17,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:17,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 10:59:17,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:17,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 10:59:17,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:17,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 10:59:17,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:17,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-12 10:59:17,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:17,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:17,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:17,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:17,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:17,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 10:59:17,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:17,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 10:59:17,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:17,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 10:59:17,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:17,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:17,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:17,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:59:17,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:17,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:17,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:17,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 145 [2022-07-12 10:59:17,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:17,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:17,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:17,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:17,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:18,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:59:18,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:18,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 10:59:18,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:18,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2022-07-12 10:59:18,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:18,019 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 298 trivial. 0 not checked. [2022-07-12 10:59:18,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:59:18,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048463438] [2022-07-12 10:59:18,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048463438] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:59:18,019 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1926261270] [2022-07-12 10:59:18,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:59:18,020 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:59:18,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:59:18,021 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) [2022-07-12 10:59:18,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-12 10:59:18,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:18,628 INFO L263 TraceCheckSpWp]: Trace formula consists of 2988 conjuncts, 60 conjunts are in the unsatisfiable core [2022-07-12 10:59:18,641 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:59:18,755 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:59:18,756 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 25 [2022-07-12 10:59:18,764 INFO L356 Elim1Store]: treesize reduction 27, result has 35.7 percent of original size [2022-07-12 10:59:18,765 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 1 case distinctions, treesize of input 21 treesize of output 25 [2022-07-12 10:59:19,847 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_aws_byte_buf_init_copy_~src#1.offset| Int) (|v_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base_BEFORE_CALL_9| Int) (|ULTIMATE.start_aws_byte_buf_init_copy_~src#1.base| Int) (|v_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.offset_BEFORE_CALL_1| Int)) (and (< (+ |v_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base_BEFORE_CALL_9| 1) |ULTIMATE.start_aws_byte_buf_init_copy_~src#1.base|) (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base_BEFORE_CALL_9|) (+ |v_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.offset_BEFORE_CALL_1| 16)) (select (select |c_#memory_int| |ULTIMATE.start_aws_byte_buf_init_copy_~src#1.base|) (+ 16 |ULTIMATE.start_aws_byte_buf_init_copy_~src#1.offset|))))) is different from true [2022-07-12 10:59:26,489 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 10:59:26,496 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-12 10:59:26,497 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 37 [2022-07-12 10:59:28,685 WARN L855 $PredicateComparison]: unable to prove that (exists ((|ULTIMATE.start_aws_byte_buf_init_copy_~src#1.offset| Int) (|v_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.offset_BEFORE_CALL_3| Int) (|v_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base_BEFORE_CALL_11| Int) (|ULTIMATE.start_aws_byte_buf_init_copy_~src#1.base| Int)) (let ((.cse0 (select (select |c_#memory_int| |ULTIMATE.start_aws_byte_buf_init_copy_~src#1.base|) (+ 16 |ULTIMATE.start_aws_byte_buf_init_copy_~src#1.offset|)))) (and (not (= (mod .cse0 18446744073709551616) 0)) (< (+ |v_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base_BEFORE_CALL_11| 1) |ULTIMATE.start_aws_byte_buf_init_copy_~src#1.base|) (= (select (select |c_#memory_int| |v_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.base_BEFORE_CALL_11|) (+ |v_ULTIMATE.start_aws_byte_buf_init_copy_~dest#1.offset_BEFORE_CALL_3| 16)) .cse0)))) is different from true [2022-07-12 10:59:30,784 INFO L134 CoverageAnalysis]: Checked inductivity of 322 backedges. 114 proven. 9 refuted. 27 times theorem prover too weak. 164 trivial. 8 not checked. [2022-07-12 10:59:30,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 10:59:31,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1926261270] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:59:31,659 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 10:59:31,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 23] total 35 [2022-07-12 10:59:31,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223975084] [2022-07-12 10:59:31,660 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 10:59:31,660 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2022-07-12 10:59:31,660 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 10:59:31,661 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2022-07-12 10:59:31,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=151, Invalid=1831, Unknown=6, NotChecked=174, Total=2162 [2022-07-12 10:59:31,662 INFO L87 Difference]: Start difference. First operand 409 states and 463 transitions. Second operand has 35 states, 34 states have (on average 4.676470588235294) internal successors, (159), 29 states have internal predecessors, (159), 14 states have call successors, (51), 8 states have call predecessors, (51), 9 states have return successors, (50), 14 states have call predecessors, (50), 14 states have call successors, (50) [2022-07-12 10:59:50,336 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 10:59:50,336 INFO L93 Difference]: Finished difference Result 622 states and 717 transitions. [2022-07-12 10:59:50,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2022-07-12 10:59:50,337 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 4.676470588235294) internal successors, (159), 29 states have internal predecessors, (159), 14 states have call successors, (51), 8 states have call predecessors, (51), 9 states have return successors, (50), 14 states have call predecessors, (50), 14 states have call successors, (50) Word has length 193 [2022-07-12 10:59:50,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 10:59:50,339 INFO L225 Difference]: With dead ends: 622 [2022-07-12 10:59:50,339 INFO L226 Difference]: Without dead ends: 408 [2022-07-12 10:59:50,341 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 241 SyntacticMatches, 1 SemanticMatches, 66 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 701 ImplicationChecksByTransitivity, 29.8s TimeCoverageRelationStatistics Valid=328, Invalid=3955, Unknown=15, NotChecked=258, Total=4556 [2022-07-12 10:59:50,342 INFO L413 NwaCegarLoop]: 172 mSDtfsCounter, 233 mSDsluCounter, 1516 mSDsCounter, 0 mSdLazyCounter, 1379 mSolverCounterSat, 159 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 1688 SdHoareTripleChecker+Invalid, 3669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 159 IncrementalHoareTripleChecker+Valid, 1379 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2131 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-12 10:59:50,342 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 1688 Invalid, 3669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [159 Valid, 1379 Invalid, 0 Unknown, 2131 Unchecked, 0.9s Time] [2022-07-12 10:59:50,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 408 states. [2022-07-12 10:59:50,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 408 to 384. [2022-07-12 10:59:50,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 384 states, 275 states have (on average 1.0654545454545454) internal successors, (293), 280 states have internal predecessors, (293), 65 states have call successors, (65), 40 states have call predecessors, (65), 43 states have return successors, (73), 63 states have call predecessors, (73), 64 states have call successors, (73) [2022-07-12 10:59:50,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 384 states to 384 states and 431 transitions. [2022-07-12 10:59:50,366 INFO L78 Accepts]: Start accepts. Automaton has 384 states and 431 transitions. Word has length 193 [2022-07-12 10:59:50,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 10:59:50,366 INFO L495 AbstractCegarLoop]: Abstraction has 384 states and 431 transitions. [2022-07-12 10:59:50,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 4.676470588235294) internal successors, (159), 29 states have internal predecessors, (159), 14 states have call successors, (51), 8 states have call predecessors, (51), 9 states have return successors, (50), 14 states have call predecessors, (50), 14 states have call successors, (50) [2022-07-12 10:59:50,367 INFO L276 IsEmpty]: Start isEmpty. Operand 384 states and 431 transitions. [2022-07-12 10:59:50,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2022-07-12 10:59:50,369 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 10:59:50,369 INFO L195 NwaCegarLoop]: trace histogram [12, 12, 12, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 10:59:50,395 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Ended with exit code 0 [2022-07-12 10:59:50,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:59:50,583 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 10:59:50,584 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 10:59:50,584 INFO L85 PathProgramCache]: Analyzing trace with hash -982458048, now seen corresponding path program 1 times [2022-07-12 10:59:50,584 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 10:59:50,584 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492831667] [2022-07-12 10:59:50,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:59:50,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 10:59:50,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:50,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-12 10:59:50,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:50,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-12 10:59:50,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:50,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 10:59:50,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:50,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:50,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:50,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-12 10:59:50,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:51,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 10:59:51,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:51,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 10:59:51,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:51,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:51,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:51,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 10:59:51,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:51,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 10:59:51,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:51,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 10:59:51,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:51,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 10:59:51,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:51,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 10:59:51,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:51,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:51,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:51,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:51,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:51,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-12 10:59:51,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:51,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-12 10:59:51,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:51,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2022-07-12 10:59:51,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:51,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:51,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:59:51,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:51,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:51,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:51,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 151 [2022-07-12 10:59:51,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:51,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:51,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:51,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 10:59:51,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:51,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-12 10:59:51,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:51,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-12 10:59:51,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:51,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 179 [2022-07-12 10:59:51,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:51,413 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 14 proven. 23 refuted. 0 times theorem prover too weak. 295 trivial. 0 not checked. [2022-07-12 10:59:51,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 10:59:51,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492831667] [2022-07-12 10:59:51,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492831667] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 10:59:51,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [580402077] [2022-07-12 10:59:51,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 10:59:51,414 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 10:59:51,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 10:59:51,416 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) [2022-07-12 10:59:51,446 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-12 10:59:52,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 10:59:52,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 2994 conjuncts, 84 conjunts are in the unsatisfiable core [2022-07-12 10:59:52,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 10:59:52,267 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 [2022-07-12 10:59:52,270 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2022-07-12 10:59:52,702 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2022-07-12 10:59:53,184 INFO L356 Elim1Store]: treesize reduction 288, result has 17.5 percent of original size [2022-07-12 10:59:53,185 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 4 case distinctions, treesize of input 40 treesize of output 75 [2022-07-12 10:59:54,114 INFO L356 Elim1Store]: treesize reduction 50, result has 33.3 percent of original size [2022-07-12 10:59:54,114 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 50 treesize of output 58 [2022-07-12 11:00:00,512 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification that was a NOOP. DAG size: 51 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-12 11:00:11,386 INFO L134 CoverageAnalysis]: Checked inductivity of 332 backedges. 19 proven. 277 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-12 11:00:11,387 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-12 11:00:12,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [580402077] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 11:00:12,447 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-12 11:00:12,447 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 22] total 37 [2022-07-12 11:00:12,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339674093] [2022-07-12 11:00:12,447 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-12 11:00:12,447 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2022-07-12 11:00:12,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 11:00:12,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2022-07-12 11:00:12,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=168, Invalid=1812, Unknown=0, NotChecked=0, Total=1980 [2022-07-12 11:00:12,448 INFO L87 Difference]: Start difference. First operand 384 states and 431 transitions. Second operand has 37 states, 37 states have (on average 5.54054054054054) internal successors, (205), 33 states have internal predecessors, (205), 14 states have call successors, (50), 10 states have call predecessors, (50), 10 states have return successors, (48), 15 states have call predecessors, (48), 13 states have call successors, (48) [2022-07-12 11:00:25,323 WARN L233 SmtUtils]: Spent 6.04s on a formula simplification that was a NOOP. DAG size: 57 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)