./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 791161d1 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_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 877e83a63a602219ce02028b5212cf6c29aa8f33a031ee39d52c3c671213dc91 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-22 22:08:29,839 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-22 22:08:29,841 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-22 22:08:29,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-22 22:08:29,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-22 22:08:29,877 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-22 22:08:29,879 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-22 22:08:29,881 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-22 22:08:29,882 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-22 22:08:29,886 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-22 22:08:29,886 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-22 22:08:29,888 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-22 22:08:29,888 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-22 22:08:29,890 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-22 22:08:29,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-22 22:08:29,893 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-22 22:08:29,893 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-22 22:08:29,895 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-22 22:08:29,896 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-22 22:08:29,900 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-22 22:08:29,901 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-22 22:08:29,902 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-22 22:08:29,903 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-22 22:08:29,904 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-22 22:08:29,905 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-22 22:08:29,909 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-22 22:08:29,910 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-22 22:08:29,910 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-22 22:08:29,911 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-22 22:08:29,911 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-22 22:08:29,912 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-22 22:08:29,912 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-22 22:08:29,914 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-22 22:08:29,914 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-22 22:08:29,915 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-22 22:08:29,915 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-22 22:08:29,916 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-22 22:08:29,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-22 22:08:29,917 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-22 22:08:29,917 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-22 22:08:29,918 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-22 22:08:29,919 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-22 22:08:29,921 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2022-07-22 22:08:29,942 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-22 22:08:29,943 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-22 22:08:29,943 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-22 22:08:29,943 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-22 22:08:29,944 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-22 22:08:29,944 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-22 22:08:29,944 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-22 22:08:29,944 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-22 22:08:29,945 INFO L138 SettingsManager]: * Use SBE=true [2022-07-22 22:08:29,945 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-22 22:08:29,946 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-22 22:08:29,946 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-22 22:08:29,946 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-22 22:08:29,946 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-22 22:08:29,946 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-22 22:08:29,946 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-22 22:08:29,946 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-22 22:08:29,947 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-22 22:08:29,947 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-22 22:08:29,947 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-22 22:08:29,948 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-22 22:08:29,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:08:29,948 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-22 22:08:29,948 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-22 22:08:29,949 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-22 22:08:29,949 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-22 22:08:29,949 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-22 22:08:29,949 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-22 22:08:29,949 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-22 22:08:29,949 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-22 22:08:29,950 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 877e83a63a602219ce02028b5212cf6c29aa8f33a031ee39d52c3c671213dc91 [2022-07-22 22:08:30,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-22 22:08:30,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-22 22:08:30,161 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-22 22:08:30,161 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-22 22:08:30,162 INFO L275 PluginConnector]: CDTParser initialized [2022-07-22 22:08:30,163 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i [2022-07-22 22:08:30,219 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3df4625a/0a64ce4041b447a6b225dd796617f22d/FLAG4851b23b8 [2022-07-22 22:08:30,816 INFO L306 CDTParser]: Found 1 translation units. [2022-07-22 22:08:30,817 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i [2022-07-22 22:08:30,840 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3df4625a/0a64ce4041b447a6b225dd796617f22d/FLAG4851b23b8 [2022-07-22 22:08:31,031 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f3df4625a/0a64ce4041b447a6b225dd796617f22d [2022-07-22 22:08:31,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-22 22:08:31,033 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-22 22:08:31,034 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-22 22:08:31,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-22 22:08:31,036 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-22 22:08:31,037 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:08:31" (1/1) ... [2022-07-22 22:08:31,038 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7ee090c9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:08:31, skipping insertion in model container [2022-07-22 22:08:31,038 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.07 10:08:31" (1/1) ... [2022-07-22 22:08:31,042 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-22 22:08:31,103 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-22 22:08:31,276 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i[4502,4515] [2022-07-22 22:08:31,280 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i[4562,4575] [2022-07-22 22:08:31,700 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-22 22:08:31,738 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:31,739 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:31,739 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:31,740 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:31,740 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:31,752 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:31,752 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:31,753 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:31,755 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:31,756 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:31,757 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:31,757 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:31,757 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:31,928 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-22 22:08:31,929 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-22 22:08:31,930 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-22 22:08:31,930 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-22 22:08:31,931 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-22 22:08:31,932 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-22 22:08:31,933 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-22 22:08:31,933 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-22 22:08:31,934 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-22 22:08:31,934 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-22 22:08:32,005 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:32,009 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:32,092 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:08:32,121 INFO L203 MainTranslator]: Completed pre-run [2022-07-22 22:08:32,138 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i[4502,4515] [2022-07-22 22:08:32,138 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_swap_contents_harness.i[4562,4575] [2022-07-22 22:08:32,174 WARN L611 FunctionHandler]: implicit declaration of function __builtin_va_copy [2022-07-22 22:08:32,192 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:32,196 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:32,199 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:32,199 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:32,200 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:32,205 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:32,206 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:32,207 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:32,207 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:32,207 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:32,208 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:32,208 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:32,208 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:32,243 WARN L611 FunctionHandler]: implicit declaration of function __atomic_load_n [2022-07-22 22:08:32,243 WARN L611 FunctionHandler]: implicit declaration of function __atomic_store_n [2022-07-22 22:08:32,244 WARN L611 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2022-07-22 22:08:32,245 WARN L611 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2022-07-22 22:08:32,245 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2022-07-22 22:08:32,246 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2022-07-22 22:08:32,247 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2022-07-22 22:08:32,247 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2022-07-22 22:08:32,247 WARN L611 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2022-07-22 22:08:32,248 WARN L611 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2022-07-22 22:08:32,276 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:32,285 WARN L1550 CHandler]: Possible shadowing of function index [2022-07-22 22:08:32,303 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-22 22:08:32,459 INFO L208 MainTranslator]: Completed translation [2022-07-22 22:08:32,459 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:08:32 WrapperNode [2022-07-22 22:08:32,459 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-22 22:08:32,460 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-22 22:08:32,460 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-22 22:08:32,460 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-22 22:08:32,466 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:08:32" (1/1) ... [2022-07-22 22:08:32,549 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:08:32" (1/1) ... [2022-07-22 22:08:32,626 INFO L137 Inliner]: procedures = 690, calls = 1715, calls flagged for inlining = 51, calls inlined = 7, statements flattened = 681 [2022-07-22 22:08:32,627 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-22 22:08:32,627 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-22 22:08:32,629 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-22 22:08:32,629 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-22 22:08:32,634 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:08:32" (1/1) ... [2022-07-22 22:08:32,635 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:08:32" (1/1) ... [2022-07-22 22:08:32,645 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:08:32" (1/1) ... [2022-07-22 22:08:32,645 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:08:32" (1/1) ... [2022-07-22 22:08:32,680 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:08:32" (1/1) ... [2022-07-22 22:08:32,691 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:08:32" (1/1) ... [2022-07-22 22:08:32,696 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:08:32" (1/1) ... [2022-07-22 22:08:32,707 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-22 22:08:32,711 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-22 22:08:32,711 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-22 22:08:32,712 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-22 22:08:32,712 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:08:32" (1/1) ... [2022-07-22 22:08:32,717 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-22 22:08:32,724 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:08:32,734 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) [2022-07-22 22:08:32,752 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 [2022-07-22 22:08:32,769 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-22 22:08:32,769 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_bounded [2022-07-22 22:08:32,770 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_bounded [2022-07-22 22:08:32,770 INFO L130 BoogieDeclarations]: Found specification of procedure aws_array_list_is_valid [2022-07-22 22:08:32,770 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_array_list_is_valid [2022-07-22 22:08:32,771 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2022-07-22 22:08:32,771 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2022-07-22 22:08:32,771 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-22 22:08:32,771 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2022-07-22 22:08:32,771 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2022-07-22 22:08:32,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2022-07-22 22:08:32,772 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2022-07-22 22:08:32,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-22 22:08:32,772 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-22 22:08:32,772 INFO L130 BoogieDeclarations]: Found specification of procedure save_byte_from_array [2022-07-22 22:08:32,772 INFO L138 BoogieDeclarations]: Found implementation of procedure save_byte_from_array [2022-07-22 22:08:32,772 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-22 22:08:32,772 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-22 22:08:32,773 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-22 22:08:32,773 INFO L130 BoogieDeclarations]: Found specification of procedure bounded_malloc [2022-07-22 22:08:32,773 INFO L138 BoogieDeclarations]: Found implementation of procedure bounded_malloc [2022-07-22 22:08:32,773 INFO L130 BoogieDeclarations]: Found specification of procedure assert_byte_from_buffer_matches [2022-07-22 22:08:32,774 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_byte_from_buffer_matches [2022-07-22 22:08:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2022-07-22 22:08:32,774 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2022-07-22 22:08:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2022-07-22 22:08:32,774 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2022-07-22 22:08:32,774 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-22 22:08:32,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-22 22:08:32,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-22 22:08:32,775 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2022-07-22 22:08:32,775 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2022-07-22 22:08:32,775 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2022-07-22 22:08:32,775 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2022-07-22 22:08:32,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-22 22:08:32,776 INFO L130 BoogieDeclarations]: Found specification of procedure assert_array_list_equivalence [2022-07-22 22:08:32,776 INFO L138 BoogieDeclarations]: Found implementation of procedure assert_array_list_equivalence [2022-07-22 22:08:32,776 INFO L130 BoogieDeclarations]: Found specification of procedure ensure_array_list_has_allocated_data_member [2022-07-22 22:08:32,776 INFO L138 BoogieDeclarations]: Found implementation of procedure ensure_array_list_has_allocated_data_member [2022-07-22 22:08:32,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-22 22:08:32,993 INFO L234 CfgBuilder]: Building ICFG [2022-07-22 22:08:32,996 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-22 22:08:33,790 INFO L275 CfgBuilder]: Performing block encoding [2022-07-22 22:08:33,795 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-22 22:08:33,796 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-22 22:08:33,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:08:33 BoogieIcfgContainer [2022-07-22 22:08:33,797 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-22 22:08:33,798 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-22 22:08:33,798 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-22 22:08:33,803 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-22 22:08:33,803 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.07 10:08:31" (1/3) ... [2022-07-22 22:08:33,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c12aebc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:08:33, skipping insertion in model container [2022-07-22 22:08:33,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.07 10:08:32" (2/3) ... [2022-07-22 22:08:33,804 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c12aebc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.07 10:08:33, skipping insertion in model container [2022-07-22 22:08:33,804 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.07 10:08:33" (3/3) ... [2022-07-22 22:08:33,806 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_swap_contents_harness.i [2022-07-22 22:08:33,815 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-22 22:08:33,816 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-22 22:08:33,858 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-22 22:08:33,867 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@740a4c2b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@59820797 [2022-07-22 22:08:33,868 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-22 22:08:33,871 INFO L276 IsEmpty]: Start isEmpty. Operand has 160 states, 92 states have (on average 1.1630434782608696) internal successors, (107), 93 states have internal predecessors, (107), 52 states have call successors, (52), 14 states have call predecessors, (52), 14 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) [2022-07-22 22:08:33,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-07-22 22:08:33,886 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:08:33,887 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:08:33,887 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:08:33,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:08:33,891 INFO L85 PathProgramCache]: Analyzing trace with hash -853348587, now seen corresponding path program 1 times [2022-07-22 22:08:33,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:08:33,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464159853] [2022-07-22 22:08:33,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:33,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:08:34,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:34,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:08:34,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:34,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:08:34,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:34,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:08:34,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:34,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:08:34,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:34,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:08:34,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:34,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 22:08:34,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:34,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 22:08:34,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:34,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 22:08:34,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:34,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 22:08:34,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:34,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 22:08:34,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:34,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:08:34,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:34,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:08:34,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:34,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 22:08:34,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:34,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 22:08:34,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:34,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 22:08:34,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:34,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 22:08:34,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:34,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 22:08:34,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:34,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 22:08:34,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:34,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 22:08:34,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:34,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-22 22:08:34,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:34,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 22:08:34,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:34,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 22:08:34,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:34,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-22 22:08:34,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:34,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 22:08:34,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:34,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-22 22:08:34,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:34,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 22:08:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:34,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-22 22:08:34,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:34,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-22 22:08:34,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:34,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-22 22:08:34,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:34,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-22 22:08:34,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:34,621 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 603 trivial. 0 not checked. [2022-07-22 22:08:34,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:08:34,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464159853] [2022-07-22 22:08:34,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464159853] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:08:34,623 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:08:34,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-22 22:08:34,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361276739] [2022-07-22 22:08:34,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:08:34,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-22 22:08:34,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:08:34,660 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-22 22:08:34,661 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:08:34,663 INFO L87 Difference]: Start difference. First operand has 160 states, 92 states have (on average 1.1630434782608696) internal successors, (107), 93 states have internal predecessors, (107), 52 states have call successors, (52), 14 states have call predecessors, (52), 14 states have return successors, (52), 52 states have call predecessors, (52), 52 states have call successors, (52) Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-22 22:08:36,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:08:36,633 INFO L93 Difference]: Finished difference Result 332 states and 486 transitions. [2022-07-22 22:08:36,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-22 22:08:36,635 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 174 [2022-07-22 22:08:36,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:08:36,642 INFO L225 Difference]: With dead ends: 332 [2022-07-22 22:08:36,642 INFO L226 Difference]: Without dead ends: 171 [2022-07-22 22:08:36,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 78 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-22 22:08:36,648 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 66 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 58 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 319 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 58 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-22 22:08:36,648 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 286 Invalid, 319 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [58 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-22 22:08:36,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2022-07-22 22:08:36,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 155. [2022-07-22 22:08:36,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 88 states have (on average 1.1477272727272727) internal successors, (101), 89 states have internal predecessors, (101), 52 states have call successors, (52), 14 states have call predecessors, (52), 14 states have return successors, (51), 51 states have call predecessors, (51), 51 states have call successors, (51) [2022-07-22 22:08:36,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 204 transitions. [2022-07-22 22:08:36,687 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 204 transitions. Word has length 174 [2022-07-22 22:08:36,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:08:36,688 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 204 transitions. [2022-07-22 22:08:36,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 2 states have internal predecessors, (40), 2 states have call successors, (29), 5 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2022-07-22 22:08:36,688 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 204 transitions. [2022-07-22 22:08:36,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-07-22 22:08:36,694 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:08:36,695 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:08:36,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-22 22:08:36,695 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:08:36,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:08:36,696 INFO L85 PathProgramCache]: Analyzing trace with hash 179931383, now seen corresponding path program 1 times [2022-07-22 22:08:36,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:08:36,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644977601] [2022-07-22 22:08:36,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:36,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:08:36,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:36,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-22 22:08:36,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:36,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-22 22:08:36,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:36,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-22 22:08:36,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:36,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:08:36,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:36,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:08:36,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:36,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-22 22:08:36,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:36,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-22 22:08:36,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:36,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-22 22:08:36,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:36,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-22 22:08:36,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:36,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-22 22:08:36,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:36,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2022-07-22 22:08:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:36,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-22 22:08:36,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:36,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-22 22:08:36,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:36,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-22 22:08:36,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:36,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-22 22:08:36,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:36,974 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-22 22:08:36,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:36,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-22 22:08:36,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:36,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-22 22:08:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:36,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-22 22:08:36,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:37,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-22 22:08:37,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:37,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-22 22:08:37,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:37,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-22 22:08:37,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:37,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 126 [2022-07-22 22:08:37,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:37,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-22 22:08:37,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:37,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-22 22:08:37,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:37,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-22 22:08:37,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:37,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 148 [2022-07-22 22:08:37,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:37,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-22 22:08:37,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:37,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2022-07-22 22:08:37,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:37,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 165 [2022-07-22 22:08:37,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:37,087 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 591 trivial. 0 not checked. [2022-07-22 22:08:37,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:08:37,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644977601] [2022-07-22 22:08:37,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644977601] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:08:37,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1267739334] [2022-07-22 22:08:37,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:37,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:08:37,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:08:37,104 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) [2022-07-22 22:08:37,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-22 22:08:37,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:37,517 INFO L263 TraceCheckSpWp]: Trace formula consists of 2619 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 22:08:37,525 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:08:37,596 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 151 proven. 0 refuted. 0 times theorem prover too weak. 452 trivial. 0 not checked. [2022-07-22 22:08:37,596 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:08:37,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1267739334] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:08:37,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:08:37,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8] total 12 [2022-07-22 22:08:37,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393543839] [2022-07-22 22:08:37,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:08:37,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 22:08:37,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:08:37,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 22:08:37,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-22 22:08:37,599 INFO L87 Difference]: Start difference. First operand 155 states and 204 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-07-22 22:08:38,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:08:38,511 INFO L93 Difference]: Finished difference Result 305 states and 406 transitions. [2022-07-22 22:08:38,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:08:38,512 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 174 [2022-07-22 22:08:38,512 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:08:38,513 INFO L225 Difference]: With dead ends: 305 [2022-07-22 22:08:38,513 INFO L226 Difference]: Without dead ends: 157 [2022-07-22 22:08:38,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 240 GetRequests, 227 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2022-07-22 22:08:38,515 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 194 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-07-22 22:08:38,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 559 Invalid, 274 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-07-22 22:08:38,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-07-22 22:08:38,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2022-07-22 22:08:38,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 89 states have (on average 1.146067415730337) internal successors, (102), 91 states have internal predecessors, (102), 52 states have call successors, (52), 14 states have call predecessors, (52), 15 states have return successors, (57), 51 states have call predecessors, (57), 51 states have call successors, (57) [2022-07-22 22:08:38,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 211 transitions. [2022-07-22 22:08:38,528 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 211 transitions. Word has length 174 [2022-07-22 22:08:38,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:08:38,528 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 211 transitions. [2022-07-22 22:08:38,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-07-22 22:08:38,528 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 211 transitions. [2022-07-22 22:08:38,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 190 [2022-07-22 22:08:38,530 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:08:38,531 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:08:38,552 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-22 22:08:38,751 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 [2022-07-22 22:08:38,752 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:08:38,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:08:38,752 INFO L85 PathProgramCache]: Analyzing trace with hash 432837413, now seen corresponding path program 1 times [2022-07-22 22:08:38,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:08:38,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275796600] [2022-07-22 22:08:38,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:38,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:08:38,846 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:08:38,847 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2031331916] [2022-07-22 22:08:38,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:38,847 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:08:38,847 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:08:38,848 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) [2022-07-22 22:08:38,850 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-22 22:08:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:39,256 INFO L263 TraceCheckSpWp]: Trace formula consists of 2760 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-22 22:08:39,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:08:39,328 INFO L134 CoverageAnalysis]: Checked inductivity of 603 backedges. 267 proven. 0 refuted. 0 times theorem prover too weak. 336 trivial. 0 not checked. [2022-07-22 22:08:39,328 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:08:39,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:08:39,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275796600] [2022-07-22 22:08:39,329 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:08:39,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2031331916] [2022-07-22 22:08:39,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2031331916] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:08:39,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:08:39,329 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 22:08:39,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76081253] [2022-07-22 22:08:39,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:08:39,330 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 22:08:39,330 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:08:39,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 22:08:39,331 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 22:08:39,331 INFO L87 Difference]: Start difference. First operand 157 states and 211 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-07-22 22:08:41,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:08:41,251 INFO L93 Difference]: Finished difference Result 270 states and 364 transitions. [2022-07-22 22:08:41,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:08:41,254 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) Word has length 189 [2022-07-22 22:08:41,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:08:41,258 INFO L225 Difference]: With dead ends: 270 [2022-07-22 22:08:41,260 INFO L226 Difference]: Without dead ends: 157 [2022-07-22 22:08:41,260 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 193 GetRequests, 186 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-07-22 22:08:41,261 INFO L413 NwaCegarLoop]: 152 mSDtfsCounter, 192 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 80 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 192 SdHoareTripleChecker+Valid, 559 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 80 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-07-22 22:08:41,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [192 Valid, 559 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [80 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-07-22 22:08:41,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-07-22 22:08:41,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2022-07-22 22:08:41,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 89 states have (on average 1.146067415730337) internal successors, (102), 91 states have internal predecessors, (102), 52 states have call successors, (52), 14 states have call predecessors, (52), 15 states have return successors, (55), 51 states have call predecessors, (55), 51 states have call successors, (55) [2022-07-22 22:08:41,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 209 transitions. [2022-07-22 22:08:41,278 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 209 transitions. Word has length 189 [2022-07-22 22:08:41,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:08:41,279 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 209 transitions. [2022-07-22 22:08:41,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 6 states have internal predecessors, (60), 3 states have call successors, (31), 2 states have call predecessors, (31), 3 states have return successors, (30), 3 states have call predecessors, (30), 3 states have call successors, (30) [2022-07-22 22:08:41,279 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 209 transitions. [2022-07-22 22:08:41,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 205 [2022-07-22 22:08:41,281 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:08:41,282 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-22 22:08:41,312 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-22 22:08:41,502 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 [2022-07-22 22:08:41,502 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:08:41,503 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:08:41,503 INFO L85 PathProgramCache]: Analyzing trace with hash 229772645, now seen corresponding path program 2 times [2022-07-22 22:08:41,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:08:41,503 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029710307] [2022-07-22 22:08:41,503 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:41,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:08:41,552 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:08:41,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [728047585] [2022-07-22 22:08:41,552 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 22:08:41,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:08:41,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:08:41,554 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) [2022-07-22 22:08:41,556 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-22 22:08:42,445 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 22:08:42,446 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:08:42,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 2901 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-22 22:08:42,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:08:42,573 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 606 trivial. 0 not checked. [2022-07-22 22:08:42,573 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:08:42,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:08:42,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029710307] [2022-07-22 22:08:42,574 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:08:42,574 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [728047585] [2022-07-22 22:08:42,574 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [728047585] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:08:42,574 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:08:42,575 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-22 22:08:42,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155093774] [2022-07-22 22:08:42,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:08:42,575 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-22 22:08:42,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:08:42,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-22 22:08:42,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-22 22:08:42,576 INFO L87 Difference]: Start difference. First operand 157 states and 209 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) [2022-07-22 22:08:44,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:08:44,052 INFO L93 Difference]: Finished difference Result 239 states and 315 transitions. [2022-07-22 22:08:44,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-22 22:08:44,053 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) Word has length 204 [2022-07-22 22:08:44,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:08:44,055 INFO L225 Difference]: With dead ends: 239 [2022-07-22 22:08:44,055 INFO L226 Difference]: Without dead ends: 157 [2022-07-22 22:08:44,055 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 208 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-07-22 22:08:44,056 INFO L413 NwaCegarLoop]: 150 mSDtfsCounter, 190 mSDsluCounter, 533 mSDsCounter, 0 mSdLazyCounter, 237 mSolverCounterSat, 77 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 190 SdHoareTripleChecker+Valid, 683 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 77 IncrementalHoareTripleChecker+Valid, 237 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-07-22 22:08:44,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [190 Valid, 683 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [77 Valid, 237 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-07-22 22:08:44,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-07-22 22:08:44,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2022-07-22 22:08:44,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 89 states have (on average 1.146067415730337) internal successors, (102), 91 states have internal predecessors, (102), 52 states have call successors, (52), 14 states have call predecessors, (52), 15 states have return successors, (53), 51 states have call predecessors, (53), 51 states have call successors, (53) [2022-07-22 22:08:44,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 207 transitions. [2022-07-22 22:08:44,069 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 207 transitions. Word has length 204 [2022-07-22 22:08:44,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:08:44,070 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 207 transitions. [2022-07-22 22:08:44,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 4 states have call successors, (31), 2 states have call predecessors, (31), 2 states have return successors, (30), 4 states have call predecessors, (30), 3 states have call successors, (30) [2022-07-22 22:08:44,070 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 207 transitions. [2022-07-22 22:08:44,072 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2022-07-22 22:08:44,072 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:08:44,073 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:08:44,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-22 22:08:44,287 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 [2022-07-22 22:08:44,287 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:08:44,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:08:44,288 INFO L85 PathProgramCache]: Analyzing trace with hash -1913799685, now seen corresponding path program 3 times [2022-07-22 22:08:44,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:08:44,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1200044640] [2022-07-22 22:08:44,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:44,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:08:44,347 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:08:44,347 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [26923564] [2022-07-22 22:08:44,347 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 22:08:44,348 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:08:44,348 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:08:44,352 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) [2022-07-22 22:08:44,354 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-22 22:08:45,832 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2022-07-22 22:08:45,832 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:08:45,844 INFO L263 TraceCheckSpWp]: Trace formula consists of 2208 conjuncts, 21 conjunts are in the unsatisfiable core [2022-07-22 22:08:45,849 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:08:45,897 INFO L134 CoverageAnalysis]: Checked inductivity of 693 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 578 trivial. 0 not checked. [2022-07-22 22:08:45,897 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-22 22:08:45,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:08:45,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1200044640] [2022-07-22 22:08:45,898 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:08:45,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [26923564] [2022-07-22 22:08:45,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [26923564] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-22 22:08:45,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-22 22:08:45,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-22 22:08:45,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976629615] [2022-07-22 22:08:45,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-22 22:08:45,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-22 22:08:45,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:08:45,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-22 22:08:45,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-22 22:08:45,901 INFO L87 Difference]: Start difference. First operand 157 states and 207 transitions. Second operand has 6 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-07-22 22:08:46,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:08:46,467 INFO L93 Difference]: Finished difference Result 232 states and 303 transitions. [2022-07-22 22:08:46,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-22 22:08:46,468 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) Word has length 234 [2022-07-22 22:08:46,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:08:46,469 INFO L225 Difference]: With dead ends: 232 [2022-07-22 22:08:46,469 INFO L226 Difference]: Without dead ends: 157 [2022-07-22 22:08:46,469 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 234 GetRequests, 229 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-22 22:08:46,470 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 2 mSDsluCounter, 692 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-07-22 22:08:46,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 877 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-07-22 22:08:46,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2022-07-22 22:08:46,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 157. [2022-07-22 22:08:46,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 89 states have (on average 1.146067415730337) internal successors, (102), 91 states have internal predecessors, (102), 52 states have call successors, (52), 14 states have call predecessors, (52), 15 states have return successors, (52), 51 states have call predecessors, (52), 51 states have call successors, (52) [2022-07-22 22:08:46,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 206 transitions. [2022-07-22 22:08:46,480 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 206 transitions. Word has length 234 [2022-07-22 22:08:46,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:08:46,480 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 206 transitions. [2022-07-22 22:08:46,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (33), 2 states have call predecessors, (33), 4 states have return successors, (32), 3 states have call predecessors, (32), 3 states have call successors, (32) [2022-07-22 22:08:46,481 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 206 transitions. [2022-07-22 22:08:46,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 250 [2022-07-22 22:08:46,483 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:08:46,483 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:08:46,507 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-07-22 22:08:46,687 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 [2022-07-22 22:08:46,688 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:08:46,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:08:46,688 INFO L85 PathProgramCache]: Analyzing trace with hash 1463432363, now seen corresponding path program 1 times [2022-07-22 22:08:46,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:08:46,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219299675] [2022-07-22 22:08:46,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:46,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:08:46,763 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:08:46,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1862667599] [2022-07-22 22:08:46,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:08:46,764 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:08:46,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:08:46,765 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) [2022-07-22 22:08:46,766 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-22 22:08:47,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:08:47,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 3324 conjuncts, 343 conjunts are in the unsatisfiable core [2022-07-22 22:08:47,982 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:08:48,021 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-22 22:08:48,022 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 9 treesize of output 15 [2022-07-22 22:08:48,323 INFO L356 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-07-22 22:08:48,324 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 37 [2022-07-22 22:08:48,613 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 [2022-07-22 22:08:48,853 INFO L356 Elim1Store]: treesize reduction 57, result has 27.8 percent of original size [2022-07-22 22:08:48,853 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 41 treesize of output 49 [2022-07-22 22:08:49,635 INFO L356 Elim1Store]: treesize reduction 60, result has 24.1 percent of original size [2022-07-22 22:08:49,635 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 29 treesize of output 37 [2022-07-22 22:08:49,703 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 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 10 treesize of output 6 [2022-07-22 22:08:49,884 INFO L356 Elim1Store]: treesize reduction 98, result has 24.6 percent of original size [2022-07-22 22:08:49,884 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 4 select indices, 4 select index equivalence classes, 1 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 9 case distinctions, treesize of input 34 treesize of output 53 [2022-07-22 22:08:49,959 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 6 [2022-07-22 22:08:52,484 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 22:08:52,485 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-07-22 22:08:52,508 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 22:08:52,508 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-07-22 22:08:53,671 WARN L855 $PredicateComparison]: unable to prove that (and (exists ((v_ArrVal_1613 Int) (|v___CPROVER_overflow_mult_~#c~1.base_28| Int)) (and (= (select |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_28|) 0) (= |c_#valid| (store |c_old(#valid)| |v___CPROVER_overflow_mult_~#c~1.base_28| v_ArrVal_1613)))) (exists ((v_ArrVal_1627 (Array Int Int))) (= |c_#memory_int| (store |c_old(#memory_int)| |c_aws_mul_size_checked_#in~r#1.base| v_ArrVal_1627)))) is different from true [2022-07-22 22:08:53,979 INFO L356 Elim1Store]: treesize reduction 191, result has 25.4 percent of original size [2022-07-22 22:08:53,979 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 18 case distinctions, treesize of input 56 treesize of output 101 [2022-07-22 22:08:53,992 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-22 22:08:53,993 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 9 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 32 [2022-07-22 22:08:57,511 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:08:57,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:08:57,514 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-22 22:08:57,515 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:08:57,517 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:08:57,521 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-22 22:08:57,521 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 2 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 129 treesize of output 158 [2022-07-22 22:09:00,329 INFO L356 Elim1Store]: treesize reduction 24, result has 75.3 percent of original size [2022-07-22 22:09:00,330 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 6 select indices, 6 select index equivalence classes, 4 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 12 case distinctions, treesize of input 178 treesize of output 238 [2022-07-22 22:09:02,141 INFO L356 Elim1Store]: treesize reduction 20, result has 4.8 percent of original size [2022-07-22 22:09:02,141 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 10 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 119 treesize of output 96 [2022-07-22 22:09:02,153 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 19 treesize of output 17 [2022-07-22 22:09:02,319 INFO L356 Elim1Store]: treesize reduction 20, result has 47.4 percent of original size [2022-07-22 22:09:02,320 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 9 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 119 treesize of output 108 [2022-07-22 22:09:02,339 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 19 treesize of output 17 [2022-07-22 22:09:02,354 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 31 [2022-07-22 22:09:02,500 INFO L356 Elim1Store]: treesize reduction 44, result has 44.3 percent of original size [2022-07-22 22:09:02,500 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 7 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 7 case distinctions, treesize of input 119 treesize of output 120 [2022-07-22 22:09:02,537 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 15 treesize of output 13 [2022-07-22 22:09:02,563 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 27 [2022-07-22 22:09:02,775 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:02,776 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:02,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:02,778 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 39 [2022-07-22 22:09:42,230 WARN L233 SmtUtils]: Spent 5.81s on a formula simplification. DAG size of input: 126 DAG size of output: 81 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 22:09:42,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:42,272 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:42,273 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:42,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:42,274 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:42,275 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-22 22:09:42,277 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 51 [2022-07-22 22:09:42,296 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 33 treesize of output 33 [2022-07-22 22:09:42,336 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 22:09:42,337 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 7 select indices, 7 select index equivalence classes, 7 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 18 case distinctions, treesize of input 499 treesize of output 387 [2022-07-22 22:09:42,360 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 399 treesize of output 385 [2022-07-22 22:09:42,367 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 385 treesize of output 379 [2022-07-22 22:09:44,461 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 26 [2022-07-22 22:10:28,016 WARN L233 SmtUtils]: Spent 6.21s on a formula simplification that was a NOOP. DAG size: 49 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 22:10:34,343 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 22:10:34,344 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 4 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 212 treesize of output 298 [2022-07-22 22:10:36,953 INFO L134 CoverageAnalysis]: Checked inductivity of 753 backedges. 385 proven. 243 refuted. 2 times theorem prover too weak. 111 trivial. 12 not checked. [2022-07-22 22:10:36,953 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:10:52,657 WARN L833 $PredicateComparison]: unable to prove that (and (forall ((|v_aws_array_list_is_valid_~#required_size~0.base_14| Int)) (let ((.cse1 (+ |c_ULTIMATE.start_aws_array_list_swap_contents_~list_a#1.offset| 24))) (let ((.cse2 (let ((.cse3 (select |c_#memory_int| |c_ULTIMATE.start_aws_array_list_swap_contents_~list_a#1.base|))) (* (select .cse3 (+ 16 |c_ULTIMATE.start_aws_array_list_swap_contents_~list_a#1.offset|)) (select .cse3 .cse1))))) (let ((.cse0 (select (store |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_14| (store (select |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_14|) 0 .cse2)) |c_ULTIMATE.start_aws_array_list_swap_contents_~list_a#1.base|))) (or (not (= (mod (select .cse0 .cse1) 18446744073709551616) 0)) (not (<= (mod .cse2 18446744073709551616) (mod (select .cse0 (+ |c_ULTIMATE.start_aws_array_list_swap_contents_~list_a#1.offset| 8)) 18446744073709551616)))))))) (forall ((|v_aws_array_list_is_valid_~#required_size~0.base_14| Int)) (let ((.cse4 (let ((.cse5 (select |c_#memory_int| |c_ULTIMATE.start_aws_array_list_swap_contents_~list_a#1.base|))) (* (select .cse5 (+ 16 |c_ULTIMATE.start_aws_array_list_swap_contents_~list_a#1.offset|)) (select .cse5 (+ |c_ULTIMATE.start_aws_array_list_swap_contents_~list_a#1.offset| 24)))))) (<= (mod .cse4 18446744073709551616) (mod (select (select (store |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_14| (store (select |c_#memory_int| |v_aws_array_list_is_valid_~#required_size~0.base_14|) 0 .cse4)) |c_ULTIMATE.start_aws_array_list_swap_contents_~list_a#1.base|) (+ |c_ULTIMATE.start_aws_array_list_swap_contents_~list_a#1.offset| 8)) 18446744073709551616))))) is different from false [2022-07-22 22:10:52,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:10:52,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219299675] [2022-07-22 22:10:52,665 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:10:52,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1862667599] [2022-07-22 22:10:52,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1862667599] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-22 22:10:52,666 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2022-07-22 22:10:52,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [65] total 65 [2022-07-22 22:10:52,666 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314378689] [2022-07-22 22:10:52,666 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2022-07-22 22:10:52,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 65 states [2022-07-22 22:10:52,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:10:52,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 65 interpolants. [2022-07-22 22:10:52,668 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=233, Invalid=4126, Unknown=71, NotChecked=262, Total=4692 [2022-07-22 22:10:52,668 INFO L87 Difference]: Start difference. First operand 157 states and 206 transitions. Second operand has 65 states, 54 states have (on average 2.259259259259259) internal successors, (122), 54 states have internal predecessors, (122), 19 states have call successors, (37), 11 states have call predecessors, (37), 21 states have return successors, (37), 20 states have call predecessors, (37), 18 states have call successors, (37) [2022-07-22 22:11:13,914 WARN L233 SmtUtils]: Spent 8.84s on a formula simplification. DAG size of input: 110 DAG size of output: 80 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 22:11:25,560 WARN L233 SmtUtils]: Spent 8.43s on a formula simplification. DAG size of input: 104 DAG size of output: 74 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 22:11:39,325 WARN L233 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 106 DAG size of output: 67 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 22:12:18,443 WARN L233 SmtUtils]: Spent 36.76s on a formula simplification. DAG size of input: 109 DAG size of output: 98 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-07-22 22:12:23,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:12:23,745 INFO L93 Difference]: Finished difference Result 255 states and 342 transitions. [2022-07-22 22:12:23,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2022-07-22 22:12:23,746 INFO L78 Accepts]: Start accepts. Automaton has has 65 states, 54 states have (on average 2.259259259259259) internal successors, (122), 54 states have internal predecessors, (122), 19 states have call successors, (37), 11 states have call predecessors, (37), 21 states have return successors, (37), 20 states have call predecessors, (37), 18 states have call successors, (37) Word has length 249 [2022-07-22 22:12:23,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:12:23,748 INFO L225 Difference]: With dead ends: 255 [2022-07-22 22:12:23,748 INFO L226 Difference]: Without dead ends: 251 [2022-07-22 22:12:23,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 159 SyntacticMatches, 31 SemanticMatches, 88 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 2848 ImplicationChecksByTransitivity, 167.8s TimeCoverageRelationStatistics Valid=439, Invalid=7134, Unknown=91, NotChecked=346, Total=8010 [2022-07-22 22:12:23,750 INFO L413 NwaCegarLoop]: 185 mSDtfsCounter, 133 mSDsluCounter, 2476 mSDsCounter, 0 mSdLazyCounter, 1655 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 145 SdHoareTripleChecker+Valid, 2661 SdHoareTripleChecker+Invalid, 4995 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 1655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3219 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-22 22:12:23,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [145 Valid, 2661 Invalid, 4995 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [121 Valid, 1655 Invalid, 0 Unknown, 3219 Unchecked, 2.9s Time] [2022-07-22 22:12:23,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2022-07-22 22:12:23,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 244. [2022-07-22 22:12:23,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 244 states, 139 states have (on average 1.1223021582733812) internal successors, (156), 144 states have internal predecessors, (156), 77 states have call successors, (77), 23 states have call predecessors, (77), 27 states have return successors, (97), 76 states have call predecessors, (97), 76 states have call successors, (97) [2022-07-22 22:12:23,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 244 states to 244 states and 330 transitions. [2022-07-22 22:12:23,777 INFO L78 Accepts]: Start accepts. Automaton has 244 states and 330 transitions. Word has length 249 [2022-07-22 22:12:23,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:12:23,778 INFO L495 AbstractCegarLoop]: Abstraction has 244 states and 330 transitions. [2022-07-22 22:12:23,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 65 states, 54 states have (on average 2.259259259259259) internal successors, (122), 54 states have internal predecessors, (122), 19 states have call successors, (37), 11 states have call predecessors, (37), 21 states have return successors, (37), 20 states have call predecessors, (37), 18 states have call successors, (37) [2022-07-22 22:12:23,778 INFO L276 IsEmpty]: Start isEmpty. Operand 244 states and 330 transitions. [2022-07-22 22:12:23,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-07-22 22:12:23,781 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:12:23,781 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:12:23,813 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-22 22:12:23,981 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 [2022-07-22 22:12:23,982 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:12:23,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:12:23,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1366939639, now seen corresponding path program 1 times [2022-07-22 22:12:23,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:12:23,982 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059537889] [2022-07-22 22:12:23,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:12:23,982 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:12:24,085 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:12:24,085 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [313592913] [2022-07-22 22:12:24,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:12:24,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:12:24,086 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:12:24,087 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) [2022-07-22 22:12:24,088 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-22 22:12:24,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-22 22:12:24,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 3332 conjuncts, 60 conjunts are in the unsatisfiable core [2022-07-22 22:12:24,604 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:12:24,709 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 22:12:24,709 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-07-22 22:12:24,720 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-22 22:12:24,720 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2022-07-22 22:12:24,924 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 317 proven. 5 refuted. 0 times theorem prover too weak. 437 trivial. 0 not checked. [2022-07-22 22:12:24,924 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:12:25,524 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 65 proven. 26 refuted. 0 times theorem prover too weak. 668 trivial. 0 not checked. [2022-07-22 22:12:25,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:12:25,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059537889] [2022-07-22 22:12:25,525 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:12:25,525 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313592913] [2022-07-22 22:12:25,525 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313592913] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:12:25,525 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 22:12:25,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 15] total 24 [2022-07-22 22:12:25,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [461037532] [2022-07-22 22:12:25,526 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 22:12:25,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-07-22 22:12:25,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:12:25,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-07-22 22:12:25,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=500, Unknown=0, NotChecked=0, Total=552 [2022-07-22 22:12:25,527 INFO L87 Difference]: Start difference. First operand 244 states and 330 transitions. Second operand has 24 states, 20 states have (on average 5.95) internal successors, (119), 17 states have internal predecessors, (119), 8 states have call successors, (61), 3 states have call predecessors, (61), 7 states have return successors, (63), 10 states have call predecessors, (63), 7 states have call successors, (63) [2022-07-22 22:12:29,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:12:29,657 INFO L93 Difference]: Finished difference Result 350 states and 480 transitions. [2022-07-22 22:12:29,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-07-22 22:12:29,658 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 20 states have (on average 5.95) internal successors, (119), 17 states have internal predecessors, (119), 8 states have call successors, (61), 3 states have call predecessors, (61), 7 states have return successors, (63), 10 states have call predecessors, (63), 7 states have call successors, (63) Word has length 261 [2022-07-22 22:12:29,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:12:29,660 INFO L225 Difference]: With dead ends: 350 [2022-07-22 22:12:29,660 INFO L226 Difference]: Without dead ends: 255 [2022-07-22 22:12:29,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 528 GetRequests, 498 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=91, Invalid=839, Unknown=0, NotChecked=0, Total=930 [2022-07-22 22:12:29,661 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 30 mSDsluCounter, 3401 mSDsCounter, 0 mSdLazyCounter, 1169 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 3590 SdHoareTripleChecker+Invalid, 1212 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-22 22:12:29,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 3590 Invalid, 1212 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1169 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-07-22 22:12:29,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2022-07-22 22:12:29,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 253. [2022-07-22 22:12:29,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 147 states have (on average 1.1360544217687074) internal successors, (167), 152 states have internal predecessors, (167), 77 states have call successors, (77), 23 states have call predecessors, (77), 28 states have return successors, (108), 77 states have call predecessors, (108), 76 states have call successors, (108) [2022-07-22 22:12:29,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 352 transitions. [2022-07-22 22:12:29,677 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 352 transitions. Word has length 261 [2022-07-22 22:12:29,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:12:29,677 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 352 transitions. [2022-07-22 22:12:29,677 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 20 states have (on average 5.95) internal successors, (119), 17 states have internal predecessors, (119), 8 states have call successors, (61), 3 states have call predecessors, (61), 7 states have return successors, (63), 10 states have call predecessors, (63), 7 states have call successors, (63) [2022-07-22 22:12:29,678 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 352 transitions. [2022-07-22 22:12:29,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 262 [2022-07-22 22:12:29,680 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:12:29,680 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:12:29,705 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-22 22:12:29,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:12:29,895 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:12:29,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:12:29,896 INFO L85 PathProgramCache]: Analyzing trace with hash -1234718665, now seen corresponding path program 2 times [2022-07-22 22:12:29,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:12:29,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2001893599] [2022-07-22 22:12:29,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:12:29,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:12:29,956 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:12:29,956 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1897420282] [2022-07-22 22:12:29,957 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-07-22 22:12:29,957 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:12:29,957 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:12:29,958 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) [2022-07-22 22:12:29,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-22 22:12:31,392 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-07-22 22:12:31,392 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-07-22 22:12:31,409 INFO L263 TraceCheckSpWp]: Trace formula consists of 3332 conjuncts, 54 conjunts are in the unsatisfiable core [2022-07-22 22:12:31,415 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-22 22:12:31,424 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 10 treesize of output 8 [2022-07-22 22:12:31,634 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 199 proven. 3 refuted. 0 times theorem prover too weak. 557 trivial. 0 not checked. [2022-07-22 22:12:31,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-22 22:12:32,352 INFO L134 CoverageAnalysis]: Checked inductivity of 759 backedges. 78 proven. 13 refuted. 0 times theorem prover too weak. 668 trivial. 0 not checked. [2022-07-22 22:12:32,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-22 22:12:32,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2001893599] [2022-07-22 22:12:32,353 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2022-07-22 22:12:32,353 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897420282] [2022-07-22 22:12:32,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897420282] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-22 22:12:32,353 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-22 22:12:32,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 15] total 22 [2022-07-22 22:12:32,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603936824] [2022-07-22 22:12:32,354 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-22 22:12:32,354 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-22 22:12:32,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-22 22:12:32,355 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-22 22:12:32,355 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2022-07-22 22:12:32,355 INFO L87 Difference]: Start difference. First operand 253 states and 352 transitions. Second operand has 22 states, 19 states have (on average 5.947368421052632) internal successors, (113), 15 states have internal predecessors, (113), 7 states have call successors, (59), 3 states have call predecessors, (59), 7 states have return successors, (61), 10 states have call predecessors, (61), 6 states have call successors, (61) [2022-07-22 22:12:36,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-22 22:12:36,359 INFO L93 Difference]: Finished difference Result 349 states and 479 transitions. [2022-07-22 22:12:36,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-22 22:12:36,359 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 5.947368421052632) internal successors, (113), 15 states have internal predecessors, (113), 7 states have call successors, (59), 3 states have call predecessors, (59), 7 states have return successors, (61), 10 states have call predecessors, (61), 6 states have call successors, (61) Word has length 261 [2022-07-22 22:12:36,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-22 22:12:36,361 INFO L225 Difference]: With dead ends: 349 [2022-07-22 22:12:36,361 INFO L226 Difference]: Without dead ends: 257 [2022-07-22 22:12:36,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 526 GetRequests, 500 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=629, Unknown=0, NotChecked=0, Total=702 [2022-07-22 22:12:36,364 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 33 mSDsluCounter, 2608 mSDsCounter, 0 mSdLazyCounter, 890 mSolverCounterSat, 41 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 2797 SdHoareTripleChecker+Invalid, 931 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 41 IncrementalHoareTripleChecker+Valid, 890 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-22 22:12:36,364 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 2797 Invalid, 931 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [41 Valid, 890 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-22 22:12:36,364 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2022-07-22 22:12:36,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 253. [2022-07-22 22:12:36,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 253 states, 147 states have (on average 1.1360544217687074) internal successors, (167), 152 states have internal predecessors, (167), 77 states have call successors, (77), 23 states have call predecessors, (77), 28 states have return successors, (105), 77 states have call predecessors, (105), 76 states have call successors, (105) [2022-07-22 22:12:36,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 253 states to 253 states and 349 transitions. [2022-07-22 22:12:36,379 INFO L78 Accepts]: Start accepts. Automaton has 253 states and 349 transitions. Word has length 261 [2022-07-22 22:12:36,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-22 22:12:36,380 INFO L495 AbstractCegarLoop]: Abstraction has 253 states and 349 transitions. [2022-07-22 22:12:36,380 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 5.947368421052632) internal successors, (113), 15 states have internal predecessors, (113), 7 states have call successors, (59), 3 states have call predecessors, (59), 7 states have return successors, (61), 10 states have call predecessors, (61), 6 states have call successors, (61) [2022-07-22 22:12:36,380 INFO L276 IsEmpty]: Start isEmpty. Operand 253 states and 349 transitions. [2022-07-22 22:12:36,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 256 [2022-07-22 22:12:36,382 INFO L187 NwaCegarLoop]: Found error trace [2022-07-22 22:12:36,382 INFO L195 NwaCegarLoop]: trace histogram [17, 17, 17, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-22 22:12:36,405 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-22 22:12:36,590 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:12:36,590 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-22 22:12:36,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-22 22:12:36,591 INFO L85 PathProgramCache]: Analyzing trace with hash 488581297, now seen corresponding path program 3 times [2022-07-22 22:12:36,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-22 22:12:36,591 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353430184] [2022-07-22 22:12:36,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-22 22:12:36,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-22 22:12:36,647 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2022-07-22 22:12:36,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [525772487] [2022-07-22 22:12:36,647 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-07-22 22:12:36,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-22 22:12:36,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-22 22:12:36,649 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) [2022-07-22 22:12:36,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process