./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_array_list_get_at_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c36dfa3b 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_get_at_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 4074842a6d6900f214884b5b0ef94aa1b36f37c81b70cefd0198f88d1e717beb --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-c36dfa3 [2021-11-03 21:54:56,879 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 21:54:56,881 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 21:54:56,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 21:54:56,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 21:54:56,934 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 21:54:56,935 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 21:54:56,936 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 21:54:56,937 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 21:54:56,937 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 21:54:56,938 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 21:54:56,939 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 21:54:56,939 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 21:54:56,940 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 21:54:56,941 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 21:54:56,941 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 21:54:56,942 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 21:54:56,942 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 21:54:56,943 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 21:54:56,944 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 21:54:56,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 21:54:56,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 21:54:56,947 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 21:54:56,947 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 21:54:56,949 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 21:54:56,949 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 21:54:56,950 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 21:54:56,950 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 21:54:56,950 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 21:54:56,951 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 21:54:56,951 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 21:54:56,952 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 21:54:56,952 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 21:54:56,953 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 21:54:56,953 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 21:54:56,954 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 21:54:56,954 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 21:54:56,954 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 21:54:56,954 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 21:54:56,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 21:54:56,955 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 21:54:56,956 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-03 21:54:56,985 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 21:54:56,986 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 21:54:56,986 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-03 21:54:56,986 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-03 21:54:56,988 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-03 21:54:56,988 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-03 21:54:56,988 INFO L138 SettingsManager]: * Use SBE=true [2021-11-03 21:54:56,988 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 21:54:56,988 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 21:54:56,988 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 21:54:56,989 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 21:54:56,989 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 21:54:56,989 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 21:54:56,989 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 21:54:56,990 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 21:54:56,990 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 21:54:56,990 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 21:54:56,990 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 21:54:56,990 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 21:54:56,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 21:54:56,990 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 21:54:56,991 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 21:54:56,991 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 21:54:56,991 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-03 21:54:56,991 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 21:54:56,991 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-03 21:54:56,991 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-03 21:54:56,992 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 21:54:56,992 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 21:54:56,993 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4074842a6d6900f214884b5b0ef94aa1b36f37c81b70cefd0198f88d1e717beb [2021-11-03 21:54:57,191 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 21:54:57,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 21:54:57,233 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 21:54:57,235 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 21:54:57,236 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 21:54:57,237 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_array_list_get_at_harness.i [2021-11-03 21:54:57,303 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90fb864cc/8ba9e8b92e9a4168bb94f13330329875/FLAGaefc5e1b0 [2021-11-03 21:54:57,908 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 21:54:57,909 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_array_list_get_at_harness.i [2021-11-03 21:54:57,949 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90fb864cc/8ba9e8b92e9a4168bb94f13330329875/FLAGaefc5e1b0 [2021-11-03 21:54:58,308 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/90fb864cc/8ba9e8b92e9a4168bb94f13330329875 [2021-11-03 21:54:58,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 21:54:58,313 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 21:54:58,314 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 21:54:58,314 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 21:54:58,316 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 21:54:58,317 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 09:54:58" (1/1) ... [2021-11-03 21:54:58,317 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50aeee4a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 09:54:58, skipping insertion in model container [2021-11-03 21:54:58,318 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 09:54:58" (1/1) ... [2021-11-03 21:54:58,322 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 21:54:58,383 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 21:54:58,566 WARN L228 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_get_at_harness.i[4495,4508] [2021-11-03 21:54:58,571 WARN L228 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_get_at_harness.i[4555,4568] [2021-11-03 21:54:58,584 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 21:54:58,591 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 21:54:59,093 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 21:54:59,142 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 21:54:59,155 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 21:54:59,156 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 21:54:59,157 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 21:54:59,164 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 21:54:59,172 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 21:54:59,174 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 21:54:59,175 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 21:54:59,176 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 21:54:59,177 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 21:54:59,177 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 21:54:59,178 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 21:54:59,179 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 21:54:59,351 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 21:54:59,352 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 21:54:59,353 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 21:54:59,353 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 21:54:59,354 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 21:54:59,355 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 21:54:59,355 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 21:54:59,355 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 21:54:59,356 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 21:54:59,356 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 21:54:59,488 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 21:54:59,499 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 21:54:59,544 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 21:54:59,545 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 21:54:59,548 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 21:54:59,576 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 21:54:59,596 WARN L228 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_get_at_harness.i[4495,4508] [2021-11-03 21:54:59,597 WARN L228 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_get_at_harness.i[4555,4568] [2021-11-03 21:54:59,602 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-03 21:54:59,603 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-03 21:54:59,645 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-03 21:54:59,653 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 21:54:59,657 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 21:54:59,657 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 21:54:59,657 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 21:54:59,658 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 21:54:59,663 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 21:54:59,664 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 21:54:59,664 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 21:54:59,664 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 21:54:59,665 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 21:54:59,665 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 21:54:59,666 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 21:54:59,666 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 21:54:59,729 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-03 21:54:59,730 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-03 21:54:59,730 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-03 21:54:59,731 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-03 21:54:59,732 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-03 21:54:59,734 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-03 21:54:59,735 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-03 21:54:59,735 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-03 21:54:59,736 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-03 21:54:59,736 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-03 21:54:59,761 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 21:54:59,765 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 21:54:59,776 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 21:54:59,779 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-03 21:54:59,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 21:54:59,967 INFO L208 MainTranslator]: Completed translation [2021-11-03 21:54:59,968 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 09:54:59 WrapperNode [2021-11-03 21:54:59,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 21:54:59,969 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 21:54:59,970 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 21:54:59,970 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 21:54:59,976 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 09:54:59" (1/1) ... [2021-11-03 21:55:00,048 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 09:54:59" (1/1) ... [2021-11-03 21:55:00,138 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 21:55:00,139 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 21:55:00,140 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 21:55:00,140 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 21:55:00,146 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 09:54:59" (1/1) ... [2021-11-03 21:55:00,146 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 09:54:59" (1/1) ... [2021-11-03 21:55:00,165 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 09:54:59" (1/1) ... [2021-11-03 21:55:00,166 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 09:54:59" (1/1) ... [2021-11-03 21:55:00,200 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 09:54:59" (1/1) ... [2021-11-03 21:55:00,205 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 09:54:59" (1/1) ... [2021-11-03 21:55:00,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 09:54:59" (1/1) ... [2021-11-03 21:55:00,236 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 21:55:00,245 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 21:55:00,245 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 21:55:00,246 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 21:55:00,246 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 09:54:59" (1/1) ... [2021-11-03 21:55:00,252 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 21:55:00,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 21:55:00,285 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) [2021-11-03 21:55:00,317 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 [2021-11-03 21:55:00,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 21:55:00,332 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-03 21:55:00,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 21:55:00,332 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 21:55:00,332 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 21:55:00,332 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 21:55:00,332 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 21:55:00,332 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-03 21:55:00,333 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 21:55:00,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-03 21:55:00,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-03 21:55:00,333 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-03 21:55:04,242 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 21:55:04,242 INFO L299 CfgBuilder]: Removed 197 assume(true) statements. [2021-11-03 21:55:04,244 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 09:55:04 BoogieIcfgContainer [2021-11-03 21:55:04,244 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 21:55:04,245 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 21:55:04,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 21:55:04,247 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 21:55:04,247 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 09:54:58" (1/3) ... [2021-11-03 21:55:04,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4065ede3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 09:55:04, skipping insertion in model container [2021-11-03 21:55:04,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 09:54:59" (2/3) ... [2021-11-03 21:55:04,248 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4065ede3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 09:55:04, skipping insertion in model container [2021-11-03 21:55:04,248 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 09:55:04" (3/3) ... [2021-11-03 21:55:04,249 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_array_list_get_at_harness.i [2021-11-03 21:55:04,252 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 21:55:04,252 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2021-11-03 21:55:04,280 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 21:55:04,284 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-03 21:55:04,285 INFO L340 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2021-11-03 21:55:04,297 INFO L276 IsEmpty]: Start isEmpty. Operand has 239 states, 226 states have (on average 1.420353982300885) internal successors, (321), 238 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 21:55:04,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-03 21:55:04,302 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 21:55:04,302 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 21:55:04,303 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 21:55:04,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 21:55:04,306 INFO L85 PathProgramCache]: Analyzing trace with hash 949117531, now seen corresponding path program 1 times [2021-11-03 21:55:04,312 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 21:55:04,312 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103128648] [2021-11-03 21:55:04,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 21:55:04,313 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 21:55:04,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 21:55:04,710 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 21:55:04,711 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 21:55:04,711 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103128648] [2021-11-03 21:55:04,712 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103128648] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 21:55:04,712 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 21:55:04,712 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-03 21:55:04,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449615644] [2021-11-03 21:55:04,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 21:55:04,718 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 21:55:04,718 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 21:55:04,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 21:55:04,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 21:55:04,744 INFO L87 Difference]: Start difference. First operand has 239 states, 226 states have (on average 1.420353982300885) internal successors, (321), 238 states have internal predecessors, (321), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 21:55:06,823 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.07s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 21:55:08,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 21:55:08,223 INFO L93 Difference]: Finished difference Result 474 states and 637 transitions. [2021-11-03 21:55:08,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 21:55:08,226 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-03 21:55:08,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 21:55:08,232 INFO L225 Difference]: With dead ends: 474 [2021-11-03 21:55:08,241 INFO L226 Difference]: Without dead ends: 232 [2021-11-03 21:55:08,244 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.03ms TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 21:55:08,250 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 291 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2977.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 292 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.92ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 291 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3404.92ms IncrementalHoareTripleChecker+Time [2021-11-03 21:55:08,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 292 Unknown, 0 Unchecked, 3.92ms Time], IncrementalHoareTripleChecker [0 Valid, 291 Invalid, 1 Unknown, 0 Unchecked, 3404.92ms Time] [2021-11-03 21:55:08,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 232 states. [2021-11-03 21:55:08,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 232 to 232. [2021-11-03 21:55:08,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 232 states, 220 states have (on average 1.2818181818181817) internal successors, (282), 231 states have internal predecessors, (282), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 21:55:08,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 282 transitions. [2021-11-03 21:55:08,286 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 282 transitions. Word has length 51 [2021-11-03 21:55:08,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 21:55:08,286 INFO L470 AbstractCegarLoop]: Abstraction has 232 states and 282 transitions. [2021-11-03 21:55:08,286 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 25.5) internal successors, (51), 2 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 21:55:08,287 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 282 transitions. [2021-11-03 21:55:08,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-03 21:55:08,288 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 21:55:08,288 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 21:55:08,288 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-03 21:55:08,289 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 21:55:08,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 21:55:08,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1385000845, now seen corresponding path program 1 times [2021-11-03 21:55:08,289 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 21:55:08,290 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380509638] [2021-11-03 21:55:08,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 21:55:08,290 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 21:55:08,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 21:55:08,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 21:55:08,445 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 21:55:08,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [380509638] [2021-11-03 21:55:08,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [380509638] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 21:55:08,445 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 21:55:08,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-03 21:55:08,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275251949] [2021-11-03 21:55:08,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 21:55:08,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 21:55:08,447 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 21:55:08,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 21:55:08,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 21:55:08,447 INFO L87 Difference]: Start difference. First operand 232 states and 282 transitions. Second operand has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 21:55:10,502 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 21:55:12,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 21:55:12,536 INFO L93 Difference]: Finished difference Result 451 states and 549 transitions. [2021-11-03 21:55:12,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 21:55:12,537 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-03 21:55:12,537 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 21:55:12,538 INFO L225 Difference]: With dead ends: 451 [2021-11-03 21:55:12,538 INFO L226 Difference]: Without dead ends: 233 [2021-11-03 21:55:12,539 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 10.26ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 21:55:12,540 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3590.81ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.41ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4024.87ms IncrementalHoareTripleChecker+Time [2021-11-03 21:55:12,540 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 562 Unknown, 0 Unchecked, 12.41ms Time], IncrementalHoareTripleChecker [0 Valid, 561 Invalid, 1 Unknown, 0 Unchecked, 4024.87ms Time] [2021-11-03 21:55:12,541 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-11-03 21:55:12,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2021-11-03 21:55:12,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 221 states have (on average 1.2805429864253393) internal successors, (283), 232 states have internal predecessors, (283), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 21:55:12,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 283 transitions. [2021-11-03 21:55:12,549 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 283 transitions. Word has length 51 [2021-11-03 21:55:12,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 21:55:12,549 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 283 transitions. [2021-11-03 21:55:12,549 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 17.0) internal successors, (51), 3 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 21:55:12,549 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 283 transitions. [2021-11-03 21:55:12,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2021-11-03 21:55:12,550 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 21:55:12,550 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 21:55:12,550 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-03 21:55:12,551 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 21:55:12,551 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 21:55:12,552 INFO L85 PathProgramCache]: Analyzing trace with hash -543271857, now seen corresponding path program 1 times [2021-11-03 21:55:12,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 21:55:12,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627047180] [2021-11-03 21:55:12,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 21:55:12,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 21:55:12,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 21:55:12,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 21:55:12,789 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 21:55:12,789 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627047180] [2021-11-03 21:55:12,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627047180] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 21:55:12,789 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 21:55:12,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 21:55:12,789 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1066646205] [2021-11-03 21:55:12,789 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 21:55:12,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 21:55:12,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 21:55:12,790 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 21:55:12,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 21:55:12,790 INFO L87 Difference]: Start difference. First operand 233 states and 283 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 21:55:14,830 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 21:55:16,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 21:55:16,495 INFO L93 Difference]: Finished difference Result 434 states and 526 transitions. [2021-11-03 21:55:16,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 21:55:16,495 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 51 [2021-11-03 21:55:16,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 21:55:16,496 INFO L225 Difference]: With dead ends: 434 [2021-11-03 21:55:16,496 INFO L226 Difference]: Without dead ends: 233 [2021-11-03 21:55:16,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 41.29ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 21:55:16,498 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 401 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 415 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3166.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 401 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.02ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 415 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3627.61ms IncrementalHoareTripleChecker+Time [2021-11-03 21:55:16,498 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [401 Valid, 0 Invalid, 424 Unknown, 0 Unchecked, 10.02ms Time], IncrementalHoareTripleChecker [8 Valid, 415 Invalid, 1 Unknown, 0 Unchecked, 3627.61ms Time] [2021-11-03 21:55:16,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-11-03 21:55:16,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2021-11-03 21:55:16,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 221 states have (on average 1.262443438914027) internal successors, (279), 232 states have internal predecessors, (279), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 21:55:16,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 279 transitions. [2021-11-03 21:55:16,506 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 279 transitions. Word has length 51 [2021-11-03 21:55:16,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 21:55:16,506 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 279 transitions. [2021-11-03 21:55:16,506 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 21:55:16,506 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 279 transitions. [2021-11-03 21:55:16,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-03 21:55:16,509 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 21:55:16,509 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 21:55:16,509 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-03 21:55:16,509 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 21:55:16,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 21:55:16,510 INFO L85 PathProgramCache]: Analyzing trace with hash 1050760955, now seen corresponding path program 1 times [2021-11-03 21:55:16,510 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 21:55:16,510 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734058836] [2021-11-03 21:55:16,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 21:55:16,510 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 21:55:16,566 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 21:55:16,567 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1639927179] [2021-11-03 21:55:16,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 21:55:16,567 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 21:55:16,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 21:55:16,568 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) [2021-11-03 21:55:16,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-03 21:55:17,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 21:55:17,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 2701 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-03 21:55:17,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 21:55:17,776 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 21:55:17,777 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 21:55:17,777 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 21:55:17,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734058836] [2021-11-03 21:55:17,777 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 21:55:17,777 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639927179] [2021-11-03 21:55:17,777 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639927179] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 21:55:17,777 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 21:55:17,777 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 21:55:17,778 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187777639] [2021-11-03 21:55:17,778 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 21:55:17,778 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-03 21:55:17,778 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 21:55:17,778 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-03 21:55:17,778 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-03 21:55:17,779 INFO L87 Difference]: Start difference. First operand 233 states and 279 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 21:55:19,818 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 21:55:21,690 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 21:55:21,690 INFO L93 Difference]: Finished difference Result 360 states and 427 transitions. [2021-11-03 21:55:21,690 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 21:55:21,690 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 75 [2021-11-03 21:55:21,691 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 21:55:21,692 INFO L225 Difference]: With dead ends: 360 [2021-11-03 21:55:21,692 INFO L226 Difference]: Without dead ends: 233 [2021-11-03 21:55:21,692 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 234.91ms TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2021-11-03 21:55:21,693 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1065 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 33 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3327.52ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1065 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.41ms SdHoareTripleChecker+Time, 33 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3727.16ms IncrementalHoareTripleChecker+Time [2021-11-03 21:55:21,693 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1065 Valid, 0 Invalid, 511 Unknown, 0 Unchecked, 8.41ms Time], IncrementalHoareTripleChecker [33 Valid, 477 Invalid, 1 Unknown, 0 Unchecked, 3727.16ms Time] [2021-11-03 21:55:21,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-11-03 21:55:21,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2021-11-03 21:55:21,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 221 states have (on average 1.244343891402715) internal successors, (275), 232 states have internal predecessors, (275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 21:55:21,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 275 transitions. [2021-11-03 21:55:21,702 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 275 transitions. Word has length 75 [2021-11-03 21:55:21,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 21:55:21,702 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 275 transitions. [2021-11-03 21:55:21,702 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 21:55:21,702 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 275 transitions. [2021-11-03 21:55:21,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-03 21:55:21,703 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 21:55:21,703 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 21:55:21,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-03 21:55:21,925 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 21:55:21,925 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 21:55:21,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 21:55:21,926 INFO L85 PathProgramCache]: Analyzing trace with hash -1119345469, now seen corresponding path program 1 times [2021-11-03 21:55:21,926 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 21:55:21,927 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055232339] [2021-11-03 21:55:21,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 21:55:21,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 21:55:22,019 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 21:55:22,035 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [279910518] [2021-11-03 21:55:22,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 21:55:22,036 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 21:55:22,036 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 21:55:22,037 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) [2021-11-03 21:55:22,068 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-03 21:55:22,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 21:55:22,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 2891 conjuncts, 14 conjunts are in the unsatisfiable core [2021-11-03 21:55:22,709 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 21:55:23,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 21:55:23,228 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 21:55:23,228 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 21:55:23,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1055232339] [2021-11-03 21:55:23,228 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 21:55:23,228 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279910518] [2021-11-03 21:55:23,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279910518] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 21:55:23,228 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 21:55:23,229 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 21:55:23,229 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658291067] [2021-11-03 21:55:23,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 21:55:23,229 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 21:55:23,229 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 21:55:23,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 21:55:23,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 21:55:23,230 INFO L87 Difference]: Start difference. First operand 233 states and 275 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 21:55:25,275 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 21:55:29,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 21:55:29,413 INFO L93 Difference]: Finished difference Result 594 states and 698 transitions. [2021-11-03 21:55:29,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 21:55:29,413 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-03 21:55:29,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 21:55:29,415 INFO L225 Difference]: With dead ends: 594 [2021-11-03 21:55:29,415 INFO L226 Difference]: Without dead ends: 427 [2021-11-03 21:55:29,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 167.98ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-11-03 21:55:29,416 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 435 mSDsluCounter, 1069 mSDsCounter, 0 mSdLazyCounter, 1369 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5468.28ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 435 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 16.10ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1369 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6012.10ms IncrementalHoareTripleChecker+Time [2021-11-03 21:55:29,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [435 Valid, 0 Invalid, 1373 Unknown, 0 Unchecked, 16.10ms Time], IncrementalHoareTripleChecker [3 Valid, 1369 Invalid, 1 Unknown, 0 Unchecked, 6012.10ms Time] [2021-11-03 21:55:29,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2021-11-03 21:55:29,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 257. [2021-11-03 21:55:29,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 245 states have (on average 1.2408163265306122) internal successors, (304), 256 states have internal predecessors, (304), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 21:55:29,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 304 transitions. [2021-11-03 21:55:29,424 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 304 transitions. Word has length 91 [2021-11-03 21:55:29,424 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 21:55:29,424 INFO L470 AbstractCegarLoop]: Abstraction has 257 states and 304 transitions. [2021-11-03 21:55:29,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 21:55:29,424 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 304 transitions. [2021-11-03 21:55:29,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-03 21:55:29,425 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 21:55:29,425 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 21:55:29,449 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-03 21:55:29,647 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 21:55:29,648 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 21:55:29,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 21:55:29,648 INFO L85 PathProgramCache]: Analyzing trace with hash 819816577, now seen corresponding path program 1 times [2021-11-03 21:55:29,648 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 21:55:29,648 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631745277] [2021-11-03 21:55:29,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 21:55:29,649 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 21:55:29,777 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 21:55:29,778 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1515688327] [2021-11-03 21:55:29,778 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 21:55:29,778 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 21:55:29,778 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 21:55:29,784 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) [2021-11-03 21:55:29,785 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-03 21:55:30,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 21:55:30,450 INFO L263 TraceCheckSpWp]: Trace formula consists of 2888 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-03 21:55:30,454 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 21:55:31,143 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 21:55:31,144 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 21:55:31,144 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 21:55:31,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631745277] [2021-11-03 21:55:31,144 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 21:55:31,144 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1515688327] [2021-11-03 21:55:31,144 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1515688327] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 21:55:31,144 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 21:55:31,145 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-03 21:55:31,145 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677364468] [2021-11-03 21:55:31,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 21:55:31,145 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 21:55:31,145 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 21:55:31,146 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 21:55:31,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-03 21:55:31,146 INFO L87 Difference]: Start difference. First operand 257 states and 304 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 21:55:33,197 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 21:55:37,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 21:55:37,652 INFO L93 Difference]: Finished difference Result 574 states and 672 transitions. [2021-11-03 21:55:37,652 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-03 21:55:37,653 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-03 21:55:37,653 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 21:55:37,665 INFO L225 Difference]: With dead ends: 574 [2021-11-03 21:55:37,670 INFO L226 Difference]: Without dead ends: 427 [2021-11-03 21:55:37,671 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 86 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 336.11ms TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2021-11-03 21:55:37,674 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 381 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 1364 mSolverCounterSat, 3 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5652.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 1368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.36ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1364 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6266.37ms IncrementalHoareTripleChecker+Time [2021-11-03 21:55:37,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [381 Valid, 0 Invalid, 1368 Unknown, 0 Unchecked, 9.36ms Time], IncrementalHoareTripleChecker [3 Valid, 1364 Invalid, 1 Unknown, 0 Unchecked, 6266.37ms Time] [2021-11-03 21:55:37,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 427 states. [2021-11-03 21:55:37,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 427 to 277. [2021-11-03 21:55:37,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 265 states have (on average 1.2377358490566037) internal successors, (328), 276 states have internal predecessors, (328), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 21:55:37,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 328 transitions. [2021-11-03 21:55:37,685 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 328 transitions. Word has length 91 [2021-11-03 21:55:37,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 21:55:37,685 INFO L470 AbstractCegarLoop]: Abstraction has 277 states and 328 transitions. [2021-11-03 21:55:37,685 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 6 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 21:55:37,685 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 328 transitions. [2021-11-03 21:55:37,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2021-11-03 21:55:37,686 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 21:55:37,686 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 21:55:37,709 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-03 21:55:37,901 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 21:55:37,901 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 21:55:37,902 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 21:55:37,902 INFO L85 PathProgramCache]: Analyzing trace with hash 1094576191, now seen corresponding path program 1 times [2021-11-03 21:55:37,902 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 21:55:37,902 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108805220] [2021-11-03 21:55:37,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 21:55:37,902 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 21:55:38,009 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 21:55:38,010 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1585653412] [2021-11-03 21:55:38,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 21:55:38,011 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 21:55:38,011 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 21:55:38,012 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) [2021-11-03 21:55:38,013 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-03 21:55:38,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 21:55:38,673 INFO L263 TraceCheckSpWp]: Trace formula consists of 2885 conjuncts, 21 conjunts are in the unsatisfiable core [2021-11-03 21:55:38,678 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 21:55:38,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 21:55:38,992 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-03 21:55:38,992 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-03 21:55:38,992 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108805220] [2021-11-03 21:55:38,993 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-03 21:55:38,993 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1585653412] [2021-11-03 21:55:38,993 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1585653412] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-03 21:55:38,993 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-03 21:55:38,993 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-03 21:55:38,993 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442423974] [2021-11-03 21:55:38,993 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-03 21:55:38,993 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 21:55:38,993 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-03 21:55:38,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 21:55:38,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-03 21:55:38,994 INFO L87 Difference]: Start difference. First operand 277 states and 328 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 21:55:41,040 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-03 21:55:44,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 21:55:44,122 INFO L93 Difference]: Finished difference Result 424 states and 498 transitions. [2021-11-03 21:55:44,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 21:55:44,123 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 91 [2021-11-03 21:55:44,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 21:55:44,124 INFO L225 Difference]: With dead ends: 424 [2021-11-03 21:55:44,124 INFO L226 Difference]: Without dead ends: 233 [2021-11-03 21:55:44,125 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.63ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-03 21:55:44,125 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 508 mSDsCounter, 0 mSdLazyCounter, 818 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4511.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 819 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.78ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 818 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5052.96ms IncrementalHoareTripleChecker+Time [2021-11-03 21:55:44,125 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 819 Unknown, 0 Unchecked, 5.78ms Time], IncrementalHoareTripleChecker [0 Valid, 818 Invalid, 1 Unknown, 0 Unchecked, 5052.96ms Time] [2021-11-03 21:55:44,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 233 states. [2021-11-03 21:55:44,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 233 to 233. [2021-11-03 21:55:44,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 233 states, 221 states have (on average 1.2352941176470589) internal successors, (273), 232 states have internal predecessors, (273), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 21:55:44,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 273 transitions. [2021-11-03 21:55:44,131 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 273 transitions. Word has length 91 [2021-11-03 21:55:44,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 21:55:44,131 INFO L470 AbstractCegarLoop]: Abstraction has 233 states and 273 transitions. [2021-11-03 21:55:44,131 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-03 21:55:44,131 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 273 transitions. [2021-11-03 21:55:44,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2021-11-03 21:55:44,134 INFO L506 BasicCegarLoop]: Found error trace [2021-11-03 21:55:44,134 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 21:55:44,157 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-03 21:55:44,347 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 21:55:44,348 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 9 more)] === [2021-11-03 21:55:44,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 21:55:44,348 INFO L85 PathProgramCache]: Analyzing trace with hash -553423599, now seen corresponding path program 1 times [2021-11-03 21:55:44,348 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-03 21:55:44,348 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868487384] [2021-11-03 21:55:44,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 21:55:44,348 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-03 21:55:44,407 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-03 21:55:44,408 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1109025952] [2021-11-03 21:55:44,408 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 21:55:44,408 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 21:55:44,408 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-03 21:55:44,409 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) [2021-11-03 21:55:44,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process Killed by 15