./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5f08f0f0 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_hash_iter_done_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 03b17f77ffc9b60dd6edfa1d1cf71f248568a9cd6bbbccab8c3e61d5773c4168 --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5f08f0f [2021-11-05 12:58:09,871 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-05 12:58:09,872 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-05 12:58:09,911 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-05 12:58:09,912 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-05 12:58:09,916 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-05 12:58:09,917 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-05 12:58:09,921 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-05 12:58:09,923 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-05 12:58:09,927 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-05 12:58:09,928 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-05 12:58:09,929 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-05 12:58:09,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-05 12:58:09,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-05 12:58:09,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-05 12:58:09,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-05 12:58:09,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-05 12:58:09,935 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-05 12:58:09,936 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-05 12:58:09,940 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-05 12:58:09,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-05 12:58:09,945 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-05 12:58:09,946 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-05 12:58:09,946 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-05 12:58:09,948 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-05 12:58:09,950 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-05 12:58:09,950 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-05 12:58:09,951 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-05 12:58:09,952 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-05 12:58:09,952 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-05 12:58:09,953 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-05 12:58:09,953 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-05 12:58:09,954 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-05 12:58:09,955 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-05 12:58:09,955 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-05 12:58:09,956 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-05 12:58:09,956 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-05 12:58:09,956 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-05 12:58:09,956 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-05 12:58:09,957 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-05 12:58:09,958 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-05 12:58:09,959 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-05 12:58:09,980 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-05 12:58:09,980 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-05 12:58:09,981 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-05 12:58:09,981 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-05 12:58:09,982 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-05 12:58:09,982 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-05 12:58:09,982 INFO L138 SettingsManager]: * Use SBE=true [2021-11-05 12:58:09,983 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-05 12:58:09,983 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-05 12:58:09,983 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-05 12:58:09,983 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-05 12:58:09,984 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-05 12:58:09,984 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-05 12:58:09,984 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-05 12:58:09,984 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-05 12:58:09,984 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-05 12:58:09,984 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-05 12:58:09,984 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-05 12:58:09,985 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-05 12:58:09,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 12:58:09,985 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-05 12:58:09,985 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-05 12:58:09,985 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-05 12:58:09,985 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-05 12:58:09,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-05 12:58:09,986 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-05 12:58:09,986 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-05 12:58:09,986 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-05 12:58:09,986 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-05 12:58:09,986 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 03b17f77ffc9b60dd6edfa1d1cf71f248568a9cd6bbbccab8c3e61d5773c4168 [2021-11-05 12:58:10,248 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-05 12:58:10,266 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-05 12:58:10,268 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-05 12:58:10,269 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-05 12:58:10,270 INFO L275 PluginConnector]: CDTParser initialized [2021-11-05 12:58:10,271 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i [2021-11-05 12:58:10,324 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40be00432/15c8be46979449d2ab9be12a8a74bb0c/FLAG30b3b8e5f [2021-11-05 12:58:10,946 INFO L306 CDTParser]: Found 1 translation units. [2021-11-05 12:58:10,947 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_iter_done_harness.i [2021-11-05 12:58:10,980 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40be00432/15c8be46979449d2ab9be12a8a74bb0c/FLAG30b3b8e5f [2021-11-05 12:58:11,060 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/40be00432/15c8be46979449d2ab9be12a8a74bb0c [2021-11-05 12:58:11,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-05 12:58:11,063 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-05 12:58:11,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-05 12:58:11,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-05 12:58:11,068 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-05 12:58:11,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 12:58:11" (1/1) ... [2021-11-05 12:58:11,070 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7371e20d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:58:11, skipping insertion in model container [2021-11-05 12:58:11,070 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.11 12:58:11" (1/1) ... [2021-11-05 12:58:11,075 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-05 12:58:11,172 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-05 12:58:11,395 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_hash_iter_done_harness.i[4492,4505] [2021-11-05 12:58:11,400 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_hash_iter_done_harness.i[4552,4565] [2021-11-05 12:58:11,422 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 12:58:11,428 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 12:58:12,034 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:12,035 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:12,036 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:12,036 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:12,038 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:12,058 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:12,060 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:12,062 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:12,063 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:12,065 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:12,066 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:12,067 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:12,067 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:12,326 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 12:58:12,327 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 12:58:12,327 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 12:58:12,328 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 12:58:12,329 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 12:58:12,330 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 12:58:12,330 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 12:58:12,331 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 12:58:12,332 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 12:58:12,332 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 12:58:12,486 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 12:58:12,764 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:12,765 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:12,786 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:12,791 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:12,797 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:12,798 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:12,813 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:12,815 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:12,816 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:12,816 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:12,816 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:12,817 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:12,817 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:12,845 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 12:58:12,877 INFO L203 MainTranslator]: Completed pre-run [2021-11-05 12:58:12,895 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_hash_iter_done_harness.i[4492,4505] [2021-11-05 12:58:12,896 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_hash_iter_done_harness.i[4552,4565] [2021-11-05 12:58:12,897 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-05 12:58:12,898 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-05 12:58:12,946 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:12,948 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:12,948 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:12,948 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:12,949 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:12,955 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:12,956 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:12,956 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:12,957 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:12,958 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:12,958 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:12,958 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:12,958 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:12,977 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-05 12:58:12,978 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-05 12:58:12,978 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-05 12:58:12,979 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-05 12:58:12,981 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-05 12:58:12,981 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-05 12:58:12,982 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-05 12:58:12,982 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-05 12:58:12,982 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-05 12:58:12,983 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-05 12:58:13,000 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-05 12:58:13,062 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:13,063 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:13,094 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:13,095 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:13,096 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:13,096 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:13,105 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:13,106 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:13,106 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:13,107 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:13,107 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:13,108 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:13,108 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-05 12:58:13,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-05 12:58:13,316 INFO L208 MainTranslator]: Completed translation [2021-11-05 12:58:13,316 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:58:13 WrapperNode [2021-11-05 12:58:13,316 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-05 12:58:13,317 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-05 12:58:13,317 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-05 12:58:13,317 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-05 12:58:13,322 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:58:13" (1/1) ... [2021-11-05 12:58:13,430 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:58:13" (1/1) ... [2021-11-05 12:58:13,524 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-05 12:58:13,526 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-05 12:58:13,526 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-05 12:58:13,526 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-05 12:58:13,534 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:58:13" (1/1) ... [2021-11-05 12:58:13,535 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:58:13" (1/1) ... [2021-11-05 12:58:13,552 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:58:13" (1/1) ... [2021-11-05 12:58:13,552 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:58:13" (1/1) ... [2021-11-05 12:58:13,609 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:58:13" (1/1) ... [2021-11-05 12:58:13,614 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:58:13" (1/1) ... [2021-11-05 12:58:13,633 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:58:13" (1/1) ... [2021-11-05 12:58:13,658 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-05 12:58:13,660 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-05 12:58:13,660 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-05 12:58:13,660 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-05 12:58:13,661 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:58:13" (1/1) ... [2021-11-05 12:58:13,668 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-05 12:58:13,678 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:58:13,688 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) [2021-11-05 12:58:13,759 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 [2021-11-05 12:58:13,774 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-05 12:58:13,775 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-05 12:58:13,775 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-05 12:58:13,775 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-05 12:58:13,775 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-05 12:58:13,775 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-05 12:58:13,775 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-05 12:58:13,776 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-05 12:58:13,776 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-05 12:58:13,776 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-05 12:58:13,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-05 12:58:13,776 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-05 12:58:13,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-05 12:58:13,776 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-05 12:58:21,814 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-05 12:58:21,814 INFO L299 CfgBuilder]: Removed 150 assume(true) statements. [2021-11-05 12:58:21,816 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 12:58:21 BoogieIcfgContainer [2021-11-05 12:58:21,816 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-05 12:58:21,819 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-05 12:58:21,819 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-05 12:58:21,821 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-05 12:58:21,821 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.11 12:58:11" (1/3) ... [2021-11-05 12:58:21,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65721bea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 12:58:21, skipping insertion in model container [2021-11-05 12:58:21,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.11 12:58:13" (2/3) ... [2021-11-05 12:58:21,822 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65721bea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.11 12:58:21, skipping insertion in model container [2021-11-05 12:58:21,822 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.11 12:58:21" (3/3) ... [2021-11-05 12:58:21,823 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_iter_done_harness.i [2021-11-05 12:58:21,839 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-05 12:58:21,840 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 8 error locations. [2021-11-05 12:58:21,910 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-05 12:58:21,919 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 [2021-11-05 12:58:21,919 INFO L340 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2021-11-05 12:58:21,943 INFO L276 IsEmpty]: Start isEmpty. Operand has 206 states, 197 states have (on average 1.4720812182741116) internal successors, (290), 205 states have internal predecessors, (290), 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) [2021-11-05 12:58:21,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-05 12:58:21,949 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:58:21,949 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] [2021-11-05 12:58:21,949 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 12:58:21,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:58:21,953 INFO L85 PathProgramCache]: Analyzing trace with hash -11255452, now seen corresponding path program 1 times [2021-11-05 12:58:21,959 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:58:21,959 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023292404] [2021-11-05 12:58:21,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:58:21,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:58:22,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:58:22,392 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:58:22,393 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:58:22,393 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023292404] [2021-11-05 12:58:22,393 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023292404] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:58:22,393 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:58:22,394 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-05 12:58:22,395 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367917572] [2021-11-05 12:58:22,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:58:22,398 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-05 12:58:22,398 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:58:22,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-05 12:58:22,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-05 12:58:22,415 INFO L87 Difference]: Start difference. First operand has 206 states, 197 states have (on average 1.4720812182741116) internal successors, (290), 205 states have internal predecessors, (290), 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 29.0) internal successors, (58), 2 states have internal predecessors, (58), 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) [2021-11-05 12:58:22,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:58:22,465 INFO L93 Difference]: Finished difference Result 408 states and 575 transitions. [2021-11-05 12:58:22,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-05 12:58:22,467 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 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 58 [2021-11-05 12:58:22,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:58:22,473 INFO L225 Difference]: With dead ends: 408 [2021-11-05 12:58:22,473 INFO L226 Difference]: Without dead ends: 200 [2021-11-05 12:58:22,476 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 [2021-11-05 12:58:22,478 INFO L933 BasicCegarLoop]: 271 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 271 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.61ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-05 12:58:22,478 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 271 Invalid, 0 Unknown, 0 Unchecked, 1.61ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-05 12:58:22,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-11-05 12:58:22,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2021-11-05 12:58:22,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 192 states have (on average 1.3802083333333333) internal successors, (265), 199 states have internal predecessors, (265), 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) [2021-11-05 12:58:22,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 265 transitions. [2021-11-05 12:58:22,507 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 265 transitions. Word has length 58 [2021-11-05 12:58:22,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:58:22,508 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 265 transitions. [2021-11-05 12:58:22,508 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 29.0) internal successors, (58), 2 states have internal predecessors, (58), 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) [2021-11-05 12:58:22,508 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 265 transitions. [2021-11-05 12:58:22,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-11-05 12:58:22,509 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:58:22,510 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] [2021-11-05 12:58:22,510 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-05 12:58:22,510 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 12:58:22,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:58:22,511 INFO L85 PathProgramCache]: Analyzing trace with hash 502328866, now seen corresponding path program 1 times [2021-11-05 12:58:22,511 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:58:22,511 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1248753884] [2021-11-05 12:58:22,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:58:22,511 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:58:22,576 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 12:58:22,577 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1956744283] [2021-11-05 12:58:22,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:58:22,577 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:58:22,577 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:58:22,578 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) [2021-11-05 12:58:22,579 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-05 12:58:23,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:58:23,274 INFO L263 TraceCheckSpWp]: Trace formula consists of 2572 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-05 12:58:23,280 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 12:58:23,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:58:23,645 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 12:58:23,645 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:58:23,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1248753884] [2021-11-05 12:58:23,645 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 12:58:23,645 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1956744283] [2021-11-05 12:58:23,645 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1956744283] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:58:23,646 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:58:23,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:58:23,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611111886] [2021-11-05 12:58:23,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:58:23,647 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:58:23,647 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:58:23,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:58:23,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:58:23,648 INFO L87 Difference]: Start difference. First operand 200 states and 265 transitions. Second operand has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 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) [2021-11-05 12:58:23,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:58:23,895 INFO L93 Difference]: Finished difference Result 337 states and 447 transitions. [2021-11-05 12:58:23,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:58:23,896 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 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 58 [2021-11-05 12:58:23,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:58:23,897 INFO L225 Difference]: With dead ends: 337 [2021-11-05 12:58:23,897 INFO L226 Difference]: Without dead ends: 200 [2021-11-05 12:58:23,898 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 84.01ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:58:23,899 INFO L933 BasicCegarLoop]: 222 mSDtfsCounter, 618 mSDsluCounter, 112 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 163.99ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 618 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.65ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 180.67ms IncrementalHoareTripleChecker+Time [2021-11-05 12:58:23,899 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [618 Valid, 334 Invalid, 67 Unknown, 0 Unchecked, 4.65ms Time], IncrementalHoareTripleChecker [6 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 180.67ms Time] [2021-11-05 12:58:23,900 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-11-05 12:58:23,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 200. [2021-11-05 12:58:23,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200 states, 192 states have (on average 1.3645833333333333) internal successors, (262), 199 states have internal predecessors, (262), 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) [2021-11-05 12:58:23,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 262 transitions. [2021-11-05 12:58:23,908 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 262 transitions. Word has length 58 [2021-11-05 12:58:23,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:58:23,908 INFO L470 AbstractCegarLoop]: Abstraction has 200 states and 262 transitions. [2021-11-05 12:58:23,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.6) internal successors, (58), 4 states have internal predecessors, (58), 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) [2021-11-05 12:58:23,908 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 262 transitions. [2021-11-05 12:58:23,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2021-11-05 12:58:23,910 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:58:23,910 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] [2021-11-05 12:58:23,934 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-05 12:58:24,131 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:58:24,132 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 12:58:24,132 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:58:24,132 INFO L85 PathProgramCache]: Analyzing trace with hash -509107726, now seen corresponding path program 1 times [2021-11-05 12:58:24,132 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:58:24,132 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1872438288] [2021-11-05 12:58:24,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:58:24,133 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:58:24,209 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 12:58:24,211 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1571586742] [2021-11-05 12:58:24,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:58:24,211 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:58:24,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:58:24,228 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) [2021-11-05 12:58:24,255 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-05 12:58:24,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:58:24,887 INFO L263 TraceCheckSpWp]: Trace formula consists of 2582 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-05 12:58:24,890 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 12:58:25,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:58:25,149 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 12:58:25,150 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:58:25,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1872438288] [2021-11-05 12:58:25,150 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 12:58:25,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571586742] [2021-11-05 12:58:25,150 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571586742] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:58:25,150 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:58:25,150 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:58:25,150 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1671779702] [2021-11-05 12:58:25,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:58:25,151 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:58:25,151 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:58:25,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:58:25,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:58:25,152 INFO L87 Difference]: Start difference. First operand 200 states and 262 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2021-11-05 12:58:25,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:58:25,345 INFO L93 Difference]: Finished difference Result 562 states and 742 transitions. [2021-11-05 12:58:25,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:58:25,355 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 60 [2021-11-05 12:58:25,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:58:25,357 INFO L225 Difference]: With dead ends: 562 [2021-11-05 12:58:25,357 INFO L226 Difference]: Without dead ends: 384 [2021-11-05 12:58:25,358 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 95.59ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:58:25,358 INFO L933 BasicCegarLoop]: 474 mSDtfsCounter, 476 mSDsluCounter, 979 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 95.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 476 SdHoareTripleChecker+Valid, 1453 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.49ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 112.39ms IncrementalHoareTripleChecker+Time [2021-11-05 12:58:25,359 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [476 Valid, 1453 Invalid, 39 Unknown, 0 Unchecked, 3.49ms Time], IncrementalHoareTripleChecker [8 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 112.39ms Time] [2021-11-05 12:58:25,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 384 states. [2021-11-05 12:58:25,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 384 to 206. [2021-11-05 12:58:25,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 206 states, 198 states have (on average 1.3535353535353536) internal successors, (268), 205 states have internal predecessors, (268), 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) [2021-11-05 12:58:25,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 268 transitions. [2021-11-05 12:58:25,386 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 268 transitions. Word has length 60 [2021-11-05 12:58:25,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:58:25,387 INFO L470 AbstractCegarLoop]: Abstraction has 206 states and 268 transitions. [2021-11-05 12:58:25,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2021-11-05 12:58:25,387 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 268 transitions. [2021-11-05 12:58:25,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-05 12:58:25,393 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:58:25,393 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] [2021-11-05 12:58:25,416 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2021-11-05 12:58:25,594 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2021-11-05 12:58:25,594 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 12:58:25,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:58:25,595 INFO L85 PathProgramCache]: Analyzing trace with hash -119228470, now seen corresponding path program 1 times [2021-11-05 12:58:25,595 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:58:25,595 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1347106022] [2021-11-05 12:58:25,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:58:25,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:58:25,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:58:26,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:58:26,056 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:58:26,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1347106022] [2021-11-05 12:58:26,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1347106022] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:58:26,057 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:58:26,057 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-11-05 12:58:26,057 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242479125] [2021-11-05 12:58:26,057 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:58:26,057 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-05 12:58:26,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:58:26,057 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-05 12:58:26,058 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:58:26,058 INFO L87 Difference]: Start difference. First operand 206 states and 268 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 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) [2021-11-05 12:58:28,098 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:58:30,202 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.10s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:58:31,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:58:31,379 INFO L93 Difference]: Finished difference Result 577 states and 750 transitions. [2021-11-05 12:58:31,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-11-05 12:58:31,380 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 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 64 [2021-11-05 12:58:31,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:58:31,381 INFO L225 Difference]: With dead ends: 577 [2021-11-05 12:58:31,381 INFO L226 Difference]: Without dead ends: 409 [2021-11-05 12:58:31,382 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 447.17ms TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2021-11-05 12:58:31,382 INFO L933 BasicCegarLoop]: 231 mSDtfsCounter, 885 mSDsluCounter, 865 mSDsCounter, 0 mSdLazyCounter, 244 mSolverCounterSat, 31 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4685.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 885 SdHoareTripleChecker+Valid, 1096 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.74ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 244 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4982.42ms IncrementalHoareTripleChecker+Time [2021-11-05 12:58:31,383 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [885 Valid, 1096 Invalid, 277 Unknown, 0 Unchecked, 7.74ms Time], IncrementalHoareTripleChecker [31 Valid, 244 Invalid, 2 Unknown, 0 Unchecked, 4982.42ms Time] [2021-11-05 12:58:31,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 409 states. [2021-11-05 12:58:31,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 409 to 308. [2021-11-05 12:58:31,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 308 states, 300 states have (on average 1.3866666666666667) internal successors, (416), 307 states have internal predecessors, (416), 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) [2021-11-05 12:58:31,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 308 states to 308 states and 416 transitions. [2021-11-05 12:58:31,412 INFO L78 Accepts]: Start accepts. Automaton has 308 states and 416 transitions. Word has length 64 [2021-11-05 12:58:31,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:58:31,413 INFO L470 AbstractCegarLoop]: Abstraction has 308 states and 416 transitions. [2021-11-05 12:58:31,413 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 8 states have internal predecessors, (64), 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) [2021-11-05 12:58:31,413 INFO L276 IsEmpty]: Start isEmpty. Operand 308 states and 416 transitions. [2021-11-05 12:58:31,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-05 12:58:31,414 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:58:31,414 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] [2021-11-05 12:58:31,414 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-05 12:58:31,414 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 12:58:31,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:58:31,414 INFO L85 PathProgramCache]: Analyzing trace with hash 128918024, now seen corresponding path program 1 times [2021-11-05 12:58:31,414 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:58:31,415 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1384500491] [2021-11-05 12:58:31,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:58:31,415 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:58:31,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:58:31,621 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:58:31,621 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:58:31,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1384500491] [2021-11-05 12:58:31,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1384500491] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:58:31,622 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:58:31,622 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:58:31,622 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239663588] [2021-11-05 12:58:31,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:58:31,622 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:58:31,622 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:58:31,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:58:31,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:58:31,623 INFO L87 Difference]: Start difference. First operand 308 states and 416 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2021-11-05 12:58:31,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:58:31,779 INFO L93 Difference]: Finished difference Result 579 states and 789 transitions. [2021-11-05 12:58:31,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 12:58:31,780 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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 64 [2021-11-05 12:58:31,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:58:31,781 INFO L225 Difference]: With dead ends: 579 [2021-11-05 12:58:31,781 INFO L226 Difference]: Without dead ends: 306 [2021-11-05 12:58:31,782 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 45.31ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:58:31,782 INFO L933 BasicCegarLoop]: 252 mSDtfsCounter, 236 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 112.47ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 481 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.43ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 121.03ms IncrementalHoareTripleChecker+Time [2021-11-05 12:58:31,782 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [236 Valid, 481 Invalid, 40 Unknown, 0 Unchecked, 1.43ms Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 121.03ms Time] [2021-11-05 12:58:31,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2021-11-05 12:58:31,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 306. [2021-11-05 12:58:31,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 298 states have (on average 1.3758389261744965) internal successors, (410), 305 states have internal predecessors, (410), 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) [2021-11-05 12:58:31,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 410 transitions. [2021-11-05 12:58:31,800 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 410 transitions. Word has length 64 [2021-11-05 12:58:31,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:58:31,800 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 410 transitions. [2021-11-05 12:58:31,800 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 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) [2021-11-05 12:58:31,800 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 410 transitions. [2021-11-05 12:58:31,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2021-11-05 12:58:31,801 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:58:31,801 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] [2021-11-05 12:58:31,802 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-05 12:58:31,802 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 12:58:31,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:58:31,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1145717007, now seen corresponding path program 1 times [2021-11-05 12:58:31,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:58:31,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150633696] [2021-11-05 12:58:31,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:58:31,803 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:58:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:58:32,071 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:58:32,071 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:58:32,071 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150633696] [2021-11-05 12:58:32,071 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [150633696] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:58:32,071 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:58:32,071 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:58:32,071 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073761818] [2021-11-05 12:58:32,071 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:58:32,072 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:58:32,072 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:58:32,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:58:32,072 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:58:32,072 INFO L87 Difference]: Start difference. First operand 306 states and 410 transitions. Second operand has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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) [2021-11-05 12:58:34,114 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:58:36,259 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:58:36,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:58:36,963 INFO L93 Difference]: Finished difference Result 583 states and 786 transitions. [2021-11-05 12:58:36,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-05 12:58:36,964 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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 66 [2021-11-05 12:58:36,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:58:36,965 INFO L225 Difference]: With dead ends: 583 [2021-11-05 12:58:36,965 INFO L226 Difference]: Without dead ends: 314 [2021-11-05 12:58:36,966 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 240.17ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-05 12:58:36,966 INFO L933 BasicCegarLoop]: 220 mSDtfsCounter, 260 mSDsluCounter, 384 mSDsCounter, 0 mSdLazyCounter, 117 mSolverCounterSat, 38 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4397.85ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 260 SdHoareTripleChecker+Valid, 604 SdHoareTripleChecker+Invalid, 157 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.92ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 117 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4704.92ms IncrementalHoareTripleChecker+Time [2021-11-05 12:58:36,966 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [260 Valid, 604 Invalid, 157 Unknown, 0 Unchecked, 2.92ms Time], IncrementalHoareTripleChecker [38 Valid, 117 Invalid, 2 Unknown, 0 Unchecked, 4704.92ms Time] [2021-11-05 12:58:36,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 314 states. [2021-11-05 12:58:36,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 314 to 306. [2021-11-05 12:58:36,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 298 states have (on average 1.3456375838926173) internal successors, (401), 305 states have internal predecessors, (401), 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) [2021-11-05 12:58:36,978 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 401 transitions. [2021-11-05 12:58:36,978 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 401 transitions. Word has length 66 [2021-11-05 12:58:36,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:58:36,978 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 401 transitions. [2021-11-05 12:58:36,978 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.2) internal successors, (66), 5 states have internal predecessors, (66), 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) [2021-11-05 12:58:36,978 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 401 transitions. [2021-11-05 12:58:36,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-05 12:58:36,980 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:58:36,980 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] [2021-11-05 12:58:36,980 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-05 12:58:36,980 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 12:58:36,981 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:58:36,981 INFO L85 PathProgramCache]: Analyzing trace with hash 1996384766, now seen corresponding path program 1 times [2021-11-05 12:58:36,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:58:36,981 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895042946] [2021-11-05 12:58:36,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:58:36,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:58:37,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:58:37,313 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:58:37,313 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:58:37,313 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895042946] [2021-11-05 12:58:37,313 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895042946] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:58:37,313 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:58:37,313 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 12:58:37,313 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27795277] [2021-11-05 12:58:37,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:58:37,314 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 12:58:37,314 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:58:37,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 12:58:37,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:58:37,315 INFO L87 Difference]: Start difference. First operand 306 states and 401 transitions. Second operand has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2021-11-05 12:58:39,398 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.08s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:58:41,520 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.12s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:58:42,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:58:42,618 INFO L93 Difference]: Finished difference Result 571 states and 739 transitions. [2021-11-05 12:58:42,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:58:42,619 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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 67 [2021-11-05 12:58:42,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:58:42,620 INFO L225 Difference]: With dead ends: 571 [2021-11-05 12:58:42,620 INFO L226 Difference]: Without dead ends: 331 [2021-11-05 12:58:42,621 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 212.91ms TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2021-11-05 12:58:42,621 INFO L933 BasicCegarLoop]: 314 mSDtfsCounter, 446 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 252 mSolverCounterSat, 14 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4823.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 446 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.65ms SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 252 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5151.38ms IncrementalHoareTripleChecker+Time [2021-11-05 12:58:42,621 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [446 Valid, 959 Invalid, 268 Unknown, 0 Unchecked, 4.65ms Time], IncrementalHoareTripleChecker [14 Valid, 252 Invalid, 2 Unknown, 0 Unchecked, 5151.38ms Time] [2021-11-05 12:58:42,622 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2021-11-05 12:58:42,640 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 306. [2021-11-05 12:58:42,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 298 states have (on average 1.3355704697986577) internal successors, (398), 305 states have internal predecessors, (398), 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) [2021-11-05 12:58:42,641 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 398 transitions. [2021-11-05 12:58:42,641 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 398 transitions. Word has length 67 [2021-11-05 12:58:42,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:58:42,641 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 398 transitions. [2021-11-05 12:58:42,642 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.166666666666666) internal successors, (67), 6 states have internal predecessors, (67), 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) [2021-11-05 12:58:42,642 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 398 transitions. [2021-11-05 12:58:42,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-05 12:58:42,642 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:58:42,642 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] [2021-11-05 12:58:42,642 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-05 12:58:42,642 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 12:58:42,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:58:42,643 INFO L85 PathProgramCache]: Analyzing trace with hash 1974209867, now seen corresponding path program 1 times [2021-11-05 12:58:42,643 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:58:42,643 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370530902] [2021-11-05 12:58:42,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:58:42,643 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:58:42,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:58:43,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:58:43,385 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:58:43,385 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370530902] [2021-11-05 12:58:43,385 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370530902] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:58:43,385 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:58:43,386 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 12:58:43,386 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517878474] [2021-11-05 12:58:43,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:58:43,386 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 12:58:43,386 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:58:43,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 12:58:43,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2021-11-05 12:58:43,387 INFO L87 Difference]: Start difference. First operand 306 states and 398 transitions. Second operand has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 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) [2021-11-05 12:58:45,423 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:58:47,564 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:58:49,775 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:58:51,913 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:58:55,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:58:55,634 INFO L93 Difference]: Finished difference Result 963 states and 1198 transitions. [2021-11-05 12:58:55,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2021-11-05 12:58:55,635 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 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 76 [2021-11-05 12:58:55,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:58:55,637 INFO L225 Difference]: With dead ends: 963 [2021-11-05 12:58:55,637 INFO L226 Difference]: Without dead ends: 847 [2021-11-05 12:58:55,639 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 273 ImplicationChecksByTransitivity, 1887.08ms TimeCoverageRelationStatistics Valid=303, Invalid=887, Unknown=0, NotChecked=0, Total=1190 [2021-11-05 12:58:55,639 INFO L933 BasicCegarLoop]: 300 mSDtfsCounter, 2449 mSDsluCounter, 1648 mSDsCounter, 0 mSdLazyCounter, 627 mSolverCounterSat, 91 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9782.90ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2449 SdHoareTripleChecker+Valid, 1948 SdHoareTripleChecker+Invalid, 722 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.70ms SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 627 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10625.23ms IncrementalHoareTripleChecker+Time [2021-11-05 12:58:55,640 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2449 Valid, 1948 Invalid, 722 Unknown, 0 Unchecked, 12.70ms Time], IncrementalHoareTripleChecker [91 Valid, 627 Invalid, 4 Unknown, 0 Unchecked, 10625.23ms Time] [2021-11-05 12:58:55,641 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2021-11-05 12:58:55,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 355. [2021-11-05 12:58:55,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 355 states, 347 states have (on average 1.3285302593659942) internal successors, (461), 354 states have internal predecessors, (461), 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) [2021-11-05 12:58:55,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 355 states to 355 states and 461 transitions. [2021-11-05 12:58:55,656 INFO L78 Accepts]: Start accepts. Automaton has 355 states and 461 transitions. Word has length 76 [2021-11-05 12:58:55,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:58:55,656 INFO L470 AbstractCegarLoop]: Abstraction has 355 states and 461 transitions. [2021-11-05 12:58:55,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.6) internal successors, (76), 10 states have internal predecessors, (76), 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) [2021-11-05 12:58:55,657 INFO L276 IsEmpty]: Start isEmpty. Operand 355 states and 461 transitions. [2021-11-05 12:58:55,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-05 12:58:55,657 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:58:55,658 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] [2021-11-05 12:58:55,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-05 12:58:55,658 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 12:58:55,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:58:55,658 INFO L85 PathProgramCache]: Analyzing trace with hash -1317329973, now seen corresponding path program 1 times [2021-11-05 12:58:55,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:58:55,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [881556209] [2021-11-05 12:58:55,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:58:55,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:58:55,723 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 12:58:55,723 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [299523186] [2021-11-05 12:58:55,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:58:55,724 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:58:55,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:58:55,727 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) [2021-11-05 12:58:55,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-05 12:58:56,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:58:56,445 INFO L263 TraceCheckSpWp]: Trace formula consists of 2733 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-05 12:58:56,449 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 12:58:56,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:58:56,687 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 12:58:56,687 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:58:56,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [881556209] [2021-11-05 12:58:56,687 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 12:58:56,687 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [299523186] [2021-11-05 12:58:56,687 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [299523186] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:58:56,687 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:58:56,687 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:58:56,687 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524899561] [2021-11-05 12:58:56,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:58:56,688 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:58:56,688 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:58:56,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:58:56,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:58:56,688 INFO L87 Difference]: Start difference. First operand 355 states and 461 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2021-11-05 12:58:56,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:58:56,885 INFO L93 Difference]: Finished difference Result 996 states and 1301 transitions. [2021-11-05 12:58:56,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:58:56,886 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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 76 [2021-11-05 12:58:56,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:58:56,888 INFO L225 Difference]: With dead ends: 996 [2021-11-05 12:58:56,888 INFO L226 Difference]: Without dead ends: 666 [2021-11-05 12:58:56,889 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 112.45ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:58:56,890 INFO L933 BasicCegarLoop]: 348 mSDtfsCounter, 438 mSDsluCounter, 833 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 102.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 438 SdHoareTripleChecker+Valid, 1181 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.57ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 109.95ms IncrementalHoareTripleChecker+Time [2021-11-05 12:58:56,890 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [438 Valid, 1181 Invalid, 39 Unknown, 0 Unchecked, 1.57ms Time], IncrementalHoareTripleChecker [8 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 109.95ms Time] [2021-11-05 12:58:56,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 666 states. [2021-11-05 12:58:56,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 666 to 364. [2021-11-05 12:58:56,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 356 states have (on average 1.3202247191011236) internal successors, (470), 363 states have internal predecessors, (470), 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) [2021-11-05 12:58:56,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 470 transitions. [2021-11-05 12:58:56,905 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 470 transitions. Word has length 76 [2021-11-05 12:58:56,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:58:56,906 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 470 transitions. [2021-11-05 12:58:56,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2021-11-05 12:58:56,906 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 470 transitions. [2021-11-05 12:58:56,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-05 12:58:56,907 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:58:56,907 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] [2021-11-05 12:58:56,932 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-05 12:58:57,123 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:58:57,123 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 12:58:57,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:58:57,124 INFO L85 PathProgramCache]: Analyzing trace with hash -2134978423, now seen corresponding path program 1 times [2021-11-05 12:58:57,124 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:58:57,124 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595877385] [2021-11-05 12:58:57,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:58:57,124 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:58:57,198 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 12:58:57,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2115351622] [2021-11-05 12:58:57,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:58:57,198 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:58:57,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:58:57,216 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) [2021-11-05 12:58:57,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-05 12:58:57,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:58:57,920 INFO L263 TraceCheckSpWp]: Trace formula consists of 2734 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-05 12:58:57,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 12:58:58,179 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 4 [2021-11-05 12:58:58,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:58:58,220 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 12:58:58,220 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:58:58,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595877385] [2021-11-05 12:58:58,220 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 12:58:58,220 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2115351622] [2021-11-05 12:58:58,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2115351622] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:58:58,221 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:58:58,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:58:58,221 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638525471] [2021-11-05 12:58:58,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:58:58,221 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:58:58,221 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:58:58,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:58:58,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:58:58,222 INFO L87 Difference]: Start difference. First operand 364 states and 470 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2021-11-05 12:59:00,260 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:59:02,396 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.14s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:59:03,315 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:59:03,315 INFO L93 Difference]: Finished difference Result 656 states and 858 transitions. [2021-11-05 12:59:03,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-05 12:59:03,316 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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 76 [2021-11-05 12:59:03,316 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:59:03,318 INFO L225 Difference]: With dead ends: 656 [2021-11-05 12:59:03,318 INFO L226 Difference]: Without dead ends: 514 [2021-11-05 12:59:03,318 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 76 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 112.71ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-05 12:59:03,319 INFO L933 BasicCegarLoop]: 224 mSDtfsCounter, 108 mSDsluCounter, 591 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 1 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4655.98ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 815 SdHoareTripleChecker+Invalid, 197 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.49ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5022.76ms IncrementalHoareTripleChecker+Time [2021-11-05 12:59:03,319 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 815 Invalid, 197 Unknown, 0 Unchecked, 3.49ms Time], IncrementalHoareTripleChecker [1 Valid, 194 Invalid, 2 Unknown, 0 Unchecked, 5022.76ms Time] [2021-11-05 12:59:03,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 514 states. [2021-11-05 12:59:03,335 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 514 to 372. [2021-11-05 12:59:03,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 372 states, 364 states have (on average 1.3131868131868132) internal successors, (478), 371 states have internal predecessors, (478), 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) [2021-11-05 12:59:03,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 372 states to 372 states and 478 transitions. [2021-11-05 12:59:03,336 INFO L78 Accepts]: Start accepts. Automaton has 372 states and 478 transitions. Word has length 76 [2021-11-05 12:59:03,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:59:03,337 INFO L470 AbstractCegarLoop]: Abstraction has 372 states and 478 transitions. [2021-11-05 12:59:03,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 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) [2021-11-05 12:59:03,337 INFO L276 IsEmpty]: Start isEmpty. Operand 372 states and 478 transitions. [2021-11-05 12:59:03,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2021-11-05 12:59:03,337 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:59:03,338 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] [2021-11-05 12:59:03,360 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2021-11-05 12:59:03,551 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:59:03,552 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 12:59:03,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:59:03,552 INFO L85 PathProgramCache]: Analyzing trace with hash -2134918841, now seen corresponding path program 1 times [2021-11-05 12:59:03,552 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:59:03,552 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1841863192] [2021-11-05 12:59:03,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:59:03,552 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:59:03,613 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 12:59:03,613 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1618891101] [2021-11-05 12:59:03,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:59:03,613 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:59:03,613 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:59:03,614 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) [2021-11-05 12:59:03,615 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-05 12:59:04,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:59:04,259 INFO L263 TraceCheckSpWp]: Trace formula consists of 2737 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-05 12:59:04,263 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 12:59:04,607 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:59:04,607 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 12:59:04,607 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:59:04,607 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1841863192] [2021-11-05 12:59:04,607 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 12:59:04,608 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1618891101] [2021-11-05 12:59:04,608 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1618891101] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:59:04,608 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:59:04,608 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 12:59:04,608 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184145363] [2021-11-05 12:59:04,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:59:04,608 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 12:59:04,608 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:59:04,608 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 12:59:04,608 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:59:04,609 INFO L87 Difference]: Start difference. First operand 372 states and 478 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 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) [2021-11-05 12:59:05,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:59:05,404 INFO L93 Difference]: Finished difference Result 767 states and 971 transitions. [2021-11-05 12:59:05,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-05 12:59:05,405 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 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 76 [2021-11-05 12:59:05,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:59:05,406 INFO L225 Difference]: With dead ends: 767 [2021-11-05 12:59:05,406 INFO L226 Difference]: Without dead ends: 431 [2021-11-05 12:59:05,407 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 70 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 264.39ms TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2021-11-05 12:59:05,407 INFO L933 BasicCegarLoop]: 254 mSDtfsCounter, 83 mSDsluCounter, 1147 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 550.50ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 1401 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.80ms SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 590.83ms IncrementalHoareTripleChecker+Time [2021-11-05 12:59:05,407 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 1401 Invalid, 237 Unknown, 0 Unchecked, 3.80ms Time], IncrementalHoareTripleChecker [43 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 590.83ms Time] [2021-11-05 12:59:05,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 431 states. [2021-11-05 12:59:05,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 431 to 329. [2021-11-05 12:59:05,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 321 states have (on average 1.2710280373831775) internal successors, (408), 328 states have internal predecessors, (408), 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) [2021-11-05 12:59:05,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 408 transitions. [2021-11-05 12:59:05,421 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 408 transitions. Word has length 76 [2021-11-05 12:59:05,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:59:05,421 INFO L470 AbstractCegarLoop]: Abstraction has 329 states and 408 transitions. [2021-11-05 12:59:05,421 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 7 states have internal predecessors, (76), 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) [2021-11-05 12:59:05,421 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 408 transitions. [2021-11-05 12:59:05,422 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-05 12:59:05,422 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:59:05,422 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] [2021-11-05 12:59:05,461 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2021-11-05 12:59:05,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-11-05 12:59:05,635 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 12:59:05,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:59:05,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1036608948, now seen corresponding path program 1 times [2021-11-05 12:59:05,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:59:05,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [802210948] [2021-11-05 12:59:05,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:59:05,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:59:06,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:59:07,074 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:59:07,075 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:59:07,075 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [802210948] [2021-11-05 12:59:07,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [802210948] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:59:07,075 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:59:07,075 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-05 12:59:07,075 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [954801552] [2021-11-05 12:59:07,075 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:59:07,076 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-05 12:59:07,076 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:59:07,076 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-05 12:59:07,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-05 12:59:07,076 INFO L87 Difference]: Start difference. First operand 329 states and 408 transitions. Second operand has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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) [2021-11-05 12:59:07,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:59:07,224 INFO L93 Difference]: Finished difference Result 634 states and 788 transitions. [2021-11-05 12:59:07,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-05 12:59:07,224 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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 89 [2021-11-05 12:59:07,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:59:07,225 INFO L225 Difference]: With dead ends: 634 [2021-11-05 12:59:07,225 INFO L226 Difference]: Without dead ends: 329 [2021-11-05 12:59:07,226 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 74.62ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:59:07,226 INFO L933 BasicCegarLoop]: 239 mSDtfsCounter, 2 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 92.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 689 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.84ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 101.34ms IncrementalHoareTripleChecker+Time [2021-11-05 12:59:07,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 689 Invalid, 35 Unknown, 0 Unchecked, 0.84ms Time], IncrementalHoareTripleChecker [5 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 101.34ms Time] [2021-11-05 12:59:07,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2021-11-05 12:59:07,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 320. [2021-11-05 12:59:07,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 320 states, 312 states have (on average 1.2628205128205128) internal successors, (394), 319 states have internal predecessors, (394), 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) [2021-11-05 12:59:07,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 320 states to 320 states and 394 transitions. [2021-11-05 12:59:07,239 INFO L78 Accepts]: Start accepts. Automaton has 320 states and 394 transitions. Word has length 89 [2021-11-05 12:59:07,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:59:07,239 INFO L470 AbstractCegarLoop]: Abstraction has 320 states and 394 transitions. [2021-11-05 12:59:07,239 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.25) internal successors, (89), 4 states have internal predecessors, (89), 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) [2021-11-05 12:59:07,239 INFO L276 IsEmpty]: Start isEmpty. Operand 320 states and 394 transitions. [2021-11-05 12:59:07,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-05 12:59:07,240 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:59:07,240 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, 1] [2021-11-05 12:59:07,240 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-05 12:59:07,240 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 12:59:07,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:59:07,241 INFO L85 PathProgramCache]: Analyzing trace with hash -187202729, now seen corresponding path program 1 times [2021-11-05 12:59:07,241 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:59:07,241 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [645223188] [2021-11-05 12:59:07,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:59:07,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:59:07,286 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 12:59:07,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1247840284] [2021-11-05 12:59:07,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:59:07,287 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:59:07,287 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:59:07,287 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 12:59:07,331 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-05 12:59:07,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:59:07,950 INFO L263 TraceCheckSpWp]: Trace formula consists of 2949 conjuncts, 22 conjunts are in the unsatisfiable core [2021-11-05 12:59:07,954 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 12:59:08,500 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-05 12:59:08,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:59:08,597 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 12:59:08,597 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:59:08,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [645223188] [2021-11-05 12:59:08,598 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 12:59:08,598 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1247840284] [2021-11-05 12:59:08,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1247840284] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:59:08,598 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:59:08,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2021-11-05 12:59:08,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1301696201] [2021-11-05 12:59:08,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:59:08,598 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-05 12:59:08,598 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:59:08,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-05 12:59:08,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-05 12:59:08,599 INFO L87 Difference]: Start difference. First operand 320 states and 394 transitions. Second operand has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 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) [2021-11-05 12:59:10,636 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:59:12,815 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:59:15,007 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:59:16,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:59:16,980 INFO L93 Difference]: Finished difference Result 503 states and 631 transitions. [2021-11-05 12:59:16,980 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-11-05 12:59:16,980 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 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 95 [2021-11-05 12:59:16,980 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:59:16,982 INFO L225 Difference]: With dead ends: 503 [2021-11-05 12:59:16,982 INFO L226 Difference]: Without dead ends: 501 [2021-11-05 12:59:16,982 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 102 GetRequests, 88 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 721.02ms TimeCoverageRelationStatistics Valid=57, Invalid=183, Unknown=0, NotChecked=0, Total=240 [2021-11-05 12:59:16,982 INFO L933 BasicCegarLoop]: 204 mSDtfsCounter, 343 mSDsluCounter, 1286 mSDsCounter, 0 mSdLazyCounter, 400 mSolverCounterSat, 7 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7178.68ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 343 SdHoareTripleChecker+Valid, 1490 SdHoareTripleChecker+Invalid, 410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.36ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 400 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7858.16ms IncrementalHoareTripleChecker+Time [2021-11-05 12:59:16,983 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [343 Valid, 1490 Invalid, 410 Unknown, 0 Unchecked, 6.36ms Time], IncrementalHoareTripleChecker [7 Valid, 400 Invalid, 3 Unknown, 0 Unchecked, 7858.16ms Time] [2021-11-05 12:59:16,983 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 501 states. [2021-11-05 12:59:16,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 501 to 324. [2021-11-05 12:59:16,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 316 states have (on average 1.259493670886076) internal successors, (398), 323 states have internal predecessors, (398), 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) [2021-11-05 12:59:16,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 398 transitions. [2021-11-05 12:59:16,994 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 398 transitions. Word has length 95 [2021-11-05 12:59:16,995 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:59:16,995 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 398 transitions. [2021-11-05 12:59:16,995 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.555555555555555) internal successors, (95), 9 states have internal predecessors, (95), 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) [2021-11-05 12:59:16,995 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 398 transitions. [2021-11-05 12:59:16,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-11-05 12:59:16,996 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:59:16,996 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, 1] [2021-11-05 12:59:17,018 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2021-11-05 12:59:17,218 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:59:17,218 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 12:59:17,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:59:17,219 INFO L85 PathProgramCache]: Analyzing trace with hash 622143897, now seen corresponding path program 1 times [2021-11-05 12:59:17,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:59:17,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216017651] [2021-11-05 12:59:17,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:59:17,219 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:59:17,285 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 12:59:17,285 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [180036544] [2021-11-05 12:59:17,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:59:17,285 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:59:17,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:59:17,286 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 12:59:17,288 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-11-05 12:59:17,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:59:17,937 INFO L263 TraceCheckSpWp]: Trace formula consists of 2946 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-05 12:59:17,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 12:59:18,202 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2021-11-05 12:59:18,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:59:18,244 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 12:59:18,244 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:59:18,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216017651] [2021-11-05 12:59:18,244 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 12:59:18,244 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180036544] [2021-11-05 12:59:18,244 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180036544] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:59:18,244 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:59:18,244 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-05 12:59:18,244 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1746284504] [2021-11-05 12:59:18,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:59:18,245 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-05 12:59:18,245 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:59:18,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-05 12:59:18,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-05 12:59:18,245 INFO L87 Difference]: Start difference. First operand 324 states and 398 transitions. Second operand has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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) [2021-11-05 12:59:20,283 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 [] [2021-11-05 12:59:22,496 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.21s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:59:23,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:59:23,705 INFO L93 Difference]: Finished difference Result 624 states and 790 transitions. [2021-11-05 12:59:23,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 12:59:23,706 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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 95 [2021-11-05 12:59:23,706 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:59:23,707 INFO L225 Difference]: With dead ends: 624 [2021-11-05 12:59:23,707 INFO L226 Difference]: Without dead ends: 470 [2021-11-05 12:59:23,708 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 195.39ms TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-11-05 12:59:23,708 INFO L933 BasicCegarLoop]: 309 mSDtfsCounter, 108 mSDsluCounter, 714 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 2 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4760.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 1023 SdHoareTripleChecker+Invalid, 224 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.31ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5295.07ms IncrementalHoareTripleChecker+Time [2021-11-05 12:59:23,708 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [108 Valid, 1023 Invalid, 224 Unknown, 0 Unchecked, 2.31ms Time], IncrementalHoareTripleChecker [2 Valid, 220 Invalid, 2 Unknown, 0 Unchecked, 5295.07ms Time] [2021-11-05 12:59:23,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 470 states. [2021-11-05 12:59:23,719 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 470 to 318. [2021-11-05 12:59:23,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 318 states, 311 states have (on average 1.2508038585209003) internal successors, (389), 317 states have internal predecessors, (389), 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) [2021-11-05 12:59:23,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 318 states to 318 states and 389 transitions. [2021-11-05 12:59:23,721 INFO L78 Accepts]: Start accepts. Automaton has 318 states and 389 transitions. Word has length 95 [2021-11-05 12:59:23,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:59:23,722 INFO L470 AbstractCegarLoop]: Abstraction has 318 states and 389 transitions. [2021-11-05 12:59:23,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.0) internal successors, (95), 5 states have internal predecessors, (95), 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) [2021-11-05 12:59:23,722 INFO L276 IsEmpty]: Start isEmpty. Operand 318 states and 389 transitions. [2021-11-05 12:59:23,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-05 12:59:23,723 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:59:23,723 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, 1, 1, 1] [2021-11-05 12:59:23,747 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-11-05 12:59:23,943 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:59:23,943 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 12:59:23,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:59:23,944 INFO L85 PathProgramCache]: Analyzing trace with hash 486940505, now seen corresponding path program 1 times [2021-11-05 12:59:23,944 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:59:23,944 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048120004] [2021-11-05 12:59:23,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:59:23,944 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:59:23,991 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 12:59:23,991 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1085133327] [2021-11-05 12:59:23,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:59:23,991 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:59:23,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:59:23,992 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 12:59:23,993 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-11-05 12:59:25,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 12:59:25,309 INFO L263 TraceCheckSpWp]: Trace formula consists of 2956 conjuncts, 76 conjunts are in the unsatisfiable core [2021-11-05 12:59:25,313 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 12:59:25,402 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-05 12:59:25,416 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-05 12:59:26,065 INFO L354 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2021-11-05 12:59:26,065 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 24 treesize of output 26 [2021-11-05 12:59:26,227 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-05 12:59:26,227 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 30 [2021-11-05 12:59:26,721 INFO L354 Elim1Store]: treesize reduction 23, result has 45.2 percent of original size [2021-11-05 12:59:26,722 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 32 [2021-11-05 12:59:27,379 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-11-05 12:59:27,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 12:59:27,517 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 12:59:27,517 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 12:59:27,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048120004] [2021-11-05 12:59:27,517 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 12:59:27,517 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1085133327] [2021-11-05 12:59:27,517 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1085133327] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 12:59:27,517 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 12:59:27,517 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-05 12:59:27,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884487633] [2021-11-05 12:59:27,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 12:59:27,518 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-05 12:59:27,518 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 12:59:27,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-05 12:59:27,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-05 12:59:27,518 INFO L87 Difference]: Start difference. First operand 318 states and 389 transitions. Second operand has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 14 states have internal predecessors, (97), 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) [2021-11-05 12:59:29,555 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 [] [2021-11-05 12:59:31,746 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:59:33,924 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:59:36,081 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:59:38,240 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:59:40,429 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 12:59:46,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 12:59:46,699 INFO L93 Difference]: Finished difference Result 1022 states and 1249 transitions. [2021-11-05 12:59:46,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-05 12:59:46,700 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 14 states have internal predecessors, (97), 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 97 [2021-11-05 12:59:46,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 12:59:46,702 INFO L225 Difference]: With dead ends: 1022 [2021-11-05 12:59:46,702 INFO L226 Difference]: Without dead ends: 810 [2021-11-05 12:59:46,703 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 2617.10ms TimeCoverageRelationStatistics Valid=206, Invalid=664, Unknown=0, NotChecked=0, Total=870 [2021-11-05 12:59:46,703 INFO L933 BasicCegarLoop]: 311 mSDtfsCounter, 850 mSDsluCounter, 2350 mSDsCounter, 0 mSdLazyCounter, 1247 mSolverCounterSat, 38 mSolverCounterUnsat, 6 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15960.78ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 2661 SdHoareTripleChecker+Invalid, 1291 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 17.85ms SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1247 IncrementalHoareTripleChecker+Invalid, 6 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 17265.74ms IncrementalHoareTripleChecker+Time [2021-11-05 12:59:46,703 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [850 Valid, 2661 Invalid, 1291 Unknown, 0 Unchecked, 17.85ms Time], IncrementalHoareTripleChecker [38 Valid, 1247 Invalid, 6 Unknown, 0 Unchecked, 17265.74ms Time] [2021-11-05 12:59:46,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 810 states. [2021-11-05 12:59:46,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 810 to 457. [2021-11-05 12:59:46,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 457 states, 450 states have (on average 1.231111111111111) internal successors, (554), 456 states have internal predecessors, (554), 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) [2021-11-05 12:59:46,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 457 states to 457 states and 554 transitions. [2021-11-05 12:59:46,723 INFO L78 Accepts]: Start accepts. Automaton has 457 states and 554 transitions. Word has length 97 [2021-11-05 12:59:46,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 12:59:46,724 INFO L470 AbstractCegarLoop]: Abstraction has 457 states and 554 transitions. [2021-11-05 12:59:46,724 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.928571428571429) internal successors, (97), 14 states have internal predecessors, (97), 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) [2021-11-05 12:59:46,724 INFO L276 IsEmpty]: Start isEmpty. Operand 457 states and 554 transitions. [2021-11-05 12:59:46,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2021-11-05 12:59:46,725 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 12:59:46,725 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, 1, 1, 1] [2021-11-05 12:59:46,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2021-11-05 12:59:46,940 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-11-05 12:59:46,940 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 12:59:46,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 12:59:46,940 INFO L85 PathProgramCache]: Analyzing trace with hash 822709213, now seen corresponding path program 1 times [2021-11-05 12:59:46,940 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 12:59:46,940 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1220716144] [2021-11-05 12:59:46,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:59:46,941 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 12:59:47,019 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 12:59:47,019 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [783956742] [2021-11-05 12:59:47,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 12:59:47,020 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 12:59:47,020 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 12:59:47,021 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 12:59:47,060 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-05 13:09:34,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:09:34,469 INFO L263 TraceCheckSpWp]: Trace formula consists of 2950 conjuncts, 88 conjunts are in the unsatisfiable core [2021-11-05 13:09:34,473 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:09:34,597 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-05 13:09:35,795 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-11-05 13:09:35,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 37 [2021-11-05 13:09:35,980 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:09:36,058 INFO L354 Elim1Store]: treesize reduction 64, result has 22.9 percent of original size [2021-11-05 13:09:36,059 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 41 treesize of output 43 [2021-11-05 13:09:42,749 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-11-05 13:09:42,861 INFO L354 Elim1Store]: treesize reduction 118, result has 18.1 percent of original size [2021-11-05 13:09:42,861 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 6 case distinctions, treesize of input 54 treesize of output 59 [2021-11-05 13:09:57,259 INFO L354 Elim1Store]: treesize reduction 36, result has 2.7 percent of original size [2021-11-05 13:09:57,260 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 36 treesize of output 20 [2021-11-05 13:09:57,361 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:09:57,362 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:09:57,362 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:09:57,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1220716144] [2021-11-05 13:09:57,362 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:09:57,362 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [783956742] [2021-11-05 13:09:57,362 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [783956742] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:09:57,362 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:09:57,362 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2021-11-05 13:09:57,362 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724814964] [2021-11-05 13:09:57,362 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:09:57,362 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-05 13:09:57,363 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:09:57,363 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-05 13:09:57,363 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=258, Unknown=3, NotChecked=0, Total=306 [2021-11-05 13:09:57,363 INFO L87 Difference]: Start difference. First operand 457 states and 554 transitions. Second operand has 18 states, 18 states have (on average 5.388888888888889) internal successors, (97), 18 states have internal predecessors, (97), 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) [2021-11-05 13:09:59,409 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 [] [2021-11-05 13:10:01,599 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.19s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:10:23,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:10:23,679 INFO L93 Difference]: Finished difference Result 621 states and 743 transitions. [2021-11-05 13:10:23,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-05 13:10:23,679 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 5.388888888888889) internal successors, (97), 18 states have internal predecessors, (97), 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 97 [2021-11-05 13:10:23,679 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:10:23,681 INFO L225 Difference]: With dead ends: 621 [2021-11-05 13:10:23,681 INFO L226 Difference]: Without dead ends: 619 [2021-11-05 13:10:23,682 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 40246.48ms TimeCoverageRelationStatistics Valid=145, Invalid=660, Unknown=7, NotChecked=0, Total=812 [2021-11-05 13:10:23,682 INFO L933 BasicCegarLoop]: 249 mSDtfsCounter, 232 mSDsluCounter, 1663 mSDsCounter, 0 mSdLazyCounter, 259 mSolverCounterSat, 29 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5151.75ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 1912 SdHoareTripleChecker+Invalid, 579 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.10ms SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 259 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 289 IncrementalHoareTripleChecker+Unchecked, 5636.62ms IncrementalHoareTripleChecker+Time [2021-11-05 13:10:23,682 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [232 Valid, 1912 Invalid, 579 Unknown, 0 Unchecked, 8.10ms Time], IncrementalHoareTripleChecker [29 Valid, 259 Invalid, 2 Unknown, 289 Unchecked, 5636.62ms Time] [2021-11-05 13:10:23,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 619 states. [2021-11-05 13:10:23,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 619 to 537. [2021-11-05 13:10:23,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 530 states have (on average 1.2132075471698114) internal successors, (643), 536 states have internal predecessors, (643), 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) [2021-11-05 13:10:23,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 643 transitions. [2021-11-05 13:10:23,739 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 643 transitions. Word has length 97 [2021-11-05 13:10:23,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:10:23,740 INFO L470 AbstractCegarLoop]: Abstraction has 537 states and 643 transitions. [2021-11-05 13:10:23,740 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.388888888888889) internal successors, (97), 18 states have internal predecessors, (97), 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) [2021-11-05 13:10:23,740 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 643 transitions. [2021-11-05 13:10:23,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2021-11-05 13:10:23,741 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:10:23,741 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, 1, 1, 1, 1, 1] [2021-11-05 13:10:23,941 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forcibly destroying the process [2021-11-05 13:10:24,008 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 137 [2021-11-05 13:10:24,009 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-05 13:10:24,009 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 13:10:24,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:10:24,009 INFO L85 PathProgramCache]: Analyzing trace with hash 302723673, now seen corresponding path program 1 times [2021-11-05 13:10:24,009 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:10:24,009 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029639224] [2021-11-05 13:10:24,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:10:24,010 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:10:24,065 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:10:24,066 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1454706063] [2021-11-05 13:10:24,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:10:24,066 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:10:24,067 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:10:24,067 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:10:24,094 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2021-11-05 13:10:24,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:10:24,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 2959 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-05 13:10:24,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:10:25,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:10:25,044 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:10:25,044 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:10:25,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029639224] [2021-11-05 13:10:25,044 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:10:25,044 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1454706063] [2021-11-05 13:10:25,044 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1454706063] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:10:25,045 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:10:25,045 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-05 13:10:25,045 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301525398] [2021-11-05 13:10:25,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:10:25,045 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-05 13:10:25,045 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:10:25,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-05 13:10:25,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-05 13:10:25,046 INFO L87 Difference]: Start difference. First operand 537 states and 643 transitions. Second operand has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 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) [2021-11-05 13:10:25,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:10:25,509 INFO L93 Difference]: Finished difference Result 1196 states and 1421 transitions. [2021-11-05 13:10:25,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-05 13:10:25,510 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 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 99 [2021-11-05 13:10:25,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:10:25,512 INFO L225 Difference]: With dead ends: 1196 [2021-11-05 13:10:25,512 INFO L226 Difference]: Without dead ends: 659 [2021-11-05 13:10:25,513 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 96 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 201.29ms TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2021-11-05 13:10:25,513 INFO L933 BasicCegarLoop]: 439 mSDtfsCounter, 222 mSDsluCounter, 1518 mSDsCounter, 0 mSdLazyCounter, 53 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 282.87ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 1957 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.39ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 53 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 302.26ms IncrementalHoareTripleChecker+Time [2021-11-05 13:10:25,514 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [222 Valid, 1957 Invalid, 60 Unknown, 0 Unchecked, 2.39ms Time], IncrementalHoareTripleChecker [7 Valid, 53 Invalid, 0 Unknown, 0 Unchecked, 302.26ms Time] [2021-11-05 13:10:25,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 659 states. [2021-11-05 13:10:25,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 659 to 364. [2021-11-05 13:10:25,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 357 states have (on average 1.1820728291316527) internal successors, (422), 363 states have internal predecessors, (422), 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) [2021-11-05 13:10:25,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 422 transitions. [2021-11-05 13:10:25,532 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 422 transitions. Word has length 99 [2021-11-05 13:10:25,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:10:25,532 INFO L470 AbstractCegarLoop]: Abstraction has 364 states and 422 transitions. [2021-11-05 13:10:25,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 16.5) internal successors, (99), 6 states have internal predecessors, (99), 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) [2021-11-05 13:10:25,533 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 422 transitions. [2021-11-05 13:10:25,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-05 13:10:25,534 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:10:25,534 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, 1, 1, 1, 1, 1, 1] [2021-11-05 13:10:25,563 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2021-11-05 13:10:25,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2021-11-05 13:10:25,748 INFO L402 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 13:10:25,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:10:25,749 INFO L85 PathProgramCache]: Analyzing trace with hash -1056570172, now seen corresponding path program 1 times [2021-11-05 13:10:25,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:10:25,749 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2120898390] [2021-11-05 13:10:25,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:10:25,749 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:10:25,808 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:10:25,809 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [938675406] [2021-11-05 13:10:25,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:10:25,809 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:10:25,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:10:25,811 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:10:25,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-11-05 13:10:26,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:10:26,530 INFO L263 TraceCheckSpWp]: Trace formula consists of 2958 conjuncts, 20 conjunts are in the unsatisfiable core [2021-11-05 13:10:26,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:10:26,638 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-05 13:10:27,068 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-05 13:10:27,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:10:27,334 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:10:27,335 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:10:27,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2120898390] [2021-11-05 13:10:27,335 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:10:27,335 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [938675406] [2021-11-05 13:10:27,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [938675406] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:10:27,335 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:10:27,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-05 13:10:27,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851203222] [2021-11-05 13:10:27,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:10:27,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-05 13:10:27,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:10:27,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-05 13:10:27,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-05 13:10:27,336 INFO L87 Difference]: Start difference. First operand 364 states and 422 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 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) [2021-11-05 13:10:29,454 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.11s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:10:31,651 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:10:33,856 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.20s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:10:35,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:10:35,530 INFO L93 Difference]: Finished difference Result 534 states and 628 transitions. [2021-11-05 13:10:35,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-05 13:10:35,531 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 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 100 [2021-11-05 13:10:35,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:10:35,532 INFO L225 Difference]: With dead ends: 534 [2021-11-05 13:10:35,532 INFO L226 Difference]: Without dead ends: 338 [2021-11-05 13:10:35,533 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 103 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 480.42ms TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-05 13:10:35,533 INFO L933 BasicCegarLoop]: 214 mSDtfsCounter, 56 mSDsluCounter, 858 mSDsCounter, 0 mSdLazyCounter, 294 mSolverCounterSat, 9 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7219.60ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 1072 SdHoareTripleChecker+Invalid, 306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.24ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 294 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7911.42ms IncrementalHoareTripleChecker+Time [2021-11-05 13:10:35,533 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 1072 Invalid, 306 Unknown, 0 Unchecked, 4.24ms Time], IncrementalHoareTripleChecker [9 Valid, 294 Invalid, 3 Unknown, 0 Unchecked, 7911.42ms Time] [2021-11-05 13:10:35,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 338 states. [2021-11-05 13:10:35,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 338 to 324. [2021-11-05 13:10:35,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 317 states have (on average 1.1829652996845426) internal successors, (375), 323 states have internal predecessors, (375), 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) [2021-11-05 13:10:35,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 375 transitions. [2021-11-05 13:10:35,549 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 375 transitions. Word has length 100 [2021-11-05 13:10:35,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:10:35,549 INFO L470 AbstractCegarLoop]: Abstraction has 324 states and 375 transitions. [2021-11-05 13:10:35,550 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 7 states have internal predecessors, (100), 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) [2021-11-05 13:10:35,550 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 375 transitions. [2021-11-05 13:10:35,550 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-05 13:10:35,550 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:10:35,550 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-05 13:10:35,577 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2021-11-05 13:10:35,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2021-11-05 13:10:35,764 INFO L402 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 13:10:35,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:10:35,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1180284646, now seen corresponding path program 1 times [2021-11-05 13:10:35,764 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:10:35,764 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1162966499] [2021-11-05 13:10:35,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:10:35,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:10:35,829 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:10:35,829 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1785587545] [2021-11-05 13:10:35,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:10:35,830 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:10:35,830 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:10:35,831 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:10:35,834 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2021-11-05 13:10:36,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:10:36,926 INFO L263 TraceCheckSpWp]: Trace formula consists of 2967 conjuncts, 76 conjunts are in the unsatisfiable core [2021-11-05 13:10:36,930 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:10:37,028 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-05 13:10:37,049 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-05 13:10:37,997 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-11-05 13:10:37,997 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 37 [2021-11-05 13:10:38,177 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-05 13:10:38,177 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 30 [2021-11-05 13:10:38,589 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-05 13:10:38,589 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-11-05 13:10:39,355 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2021-11-05 13:10:39,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:10:39,504 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:10:39,504 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:10:39,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1162966499] [2021-11-05 13:10:39,504 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:10:39,504 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785587545] [2021-11-05 13:10:39,504 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785587545] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:10:39,504 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:10:39,504 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-11-05 13:10:39,504 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303964386] [2021-11-05 13:10:39,504 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:10:39,505 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-05 13:10:39,505 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:10:39,505 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-05 13:10:39,505 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=146, Unknown=0, NotChecked=0, Total=182 [2021-11-05 13:10:39,505 INFO L87 Difference]: Start difference. First operand 324 states and 375 transitions. Second operand has 14 states, 14 states have (on average 7.142857142857143) internal successors, (100), 14 states have internal predecessors, (100), 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) [2021-11-05 13:10:41,547 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.04s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:10:43,712 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.16s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:10:47,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:10:47,387 INFO L93 Difference]: Finished difference Result 599 states and 705 transitions. [2021-11-05 13:10:47,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-05 13:10:47,388 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.142857142857143) internal successors, (100), 14 states have internal predecessors, (100), 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 100 [2021-11-05 13:10:47,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:10:47,389 INFO L225 Difference]: With dead ends: 599 [2021-11-05 13:10:47,389 INFO L226 Difference]: Without dead ends: 508 [2021-11-05 13:10:47,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 1512.60ms TimeCoverageRelationStatistics Valid=104, Invalid=358, Unknown=0, NotChecked=0, Total=462 [2021-11-05 13:10:47,390 INFO L933 BasicCegarLoop]: 197 mSDtfsCounter, 836 mSDsluCounter, 1439 mSDsCounter, 0 mSdLazyCounter, 739 mSolverCounterSat, 42 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6524.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 1636 SdHoareTripleChecker+Invalid, 783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.28ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 739 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7163.26ms IncrementalHoareTripleChecker+Time [2021-11-05 13:10:47,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [836 Valid, 1636 Invalid, 783 Unknown, 0 Unchecked, 10.28ms Time], IncrementalHoareTripleChecker [42 Valid, 739 Invalid, 2 Unknown, 0 Unchecked, 7163.26ms Time] [2021-11-05 13:10:47,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508 states. [2021-11-05 13:10:47,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508 to 356. [2021-11-05 13:10:47,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 356 states, 349 states have (on average 1.183381088825215) internal successors, (413), 355 states have internal predecessors, (413), 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) [2021-11-05 13:10:47,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 356 states to 356 states and 413 transitions. [2021-11-05 13:10:47,409 INFO L78 Accepts]: Start accepts. Automaton has 356 states and 413 transitions. Word has length 100 [2021-11-05 13:10:47,409 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:10:47,409 INFO L470 AbstractCegarLoop]: Abstraction has 356 states and 413 transitions. [2021-11-05 13:10:47,410 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.142857142857143) internal successors, (100), 14 states have internal predecessors, (100), 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) [2021-11-05 13:10:47,410 INFO L276 IsEmpty]: Start isEmpty. Operand 356 states and 413 transitions. [2021-11-05 13:10:47,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-05 13:10:47,410 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:10:47,410 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, 1, 1, 1, 1, 1, 1] [2021-11-05 13:10:47,438 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2021-11-05 13:10:47,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:10:47,636 INFO L402 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 13:10:47,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:10:47,636 INFO L85 PathProgramCache]: Analyzing trace with hash -844515938, now seen corresponding path program 1 times [2021-11-05 13:10:47,636 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:10:47,636 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612822664] [2021-11-05 13:10:47,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:10:47,636 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:10:47,716 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:10:47,716 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1233418772] [2021-11-05 13:10:47,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:10:47,717 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:10:47,717 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:10:47,719 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:10:47,720 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2021-11-05 13:10:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-05 13:10:48,773 INFO L263 TraceCheckSpWp]: Trace formula consists of 2961 conjuncts, 62 conjunts are in the unsatisfiable core [2021-11-05 13:10:48,777 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-05 13:10:48,905 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-11-05 13:10:48,922 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2021-11-05 13:10:49,650 INFO L354 Elim1Store]: treesize reduction 36, result has 26.5 percent of original size [2021-11-05 13:10:49,650 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 37 [2021-11-05 13:10:49,848 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-05 13:10:49,848 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 30 [2021-11-05 13:10:50,232 INFO L354 Elim1Store]: treesize reduction 33, result has 21.4 percent of original size [2021-11-05 13:10:50,233 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 26 [2021-11-05 13:10:50,772 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-05 13:10:50,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-05 13:10:50,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-05 13:10:50,932 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-05 13:10:50,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612822664] [2021-11-05 13:10:50,932 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-05 13:10:50,932 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1233418772] [2021-11-05 13:10:50,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1233418772] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-05 13:10:50,932 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-05 13:10:50,932 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-11-05 13:10:50,932 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1688780515] [2021-11-05 13:10:50,932 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-05 13:10:50,933 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-05 13:10:50,933 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-05 13:10:50,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-05 13:10:50,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2021-11-05 13:10:50,933 INFO L87 Difference]: Start difference. First operand 356 states and 413 transitions. Second operand has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 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) [2021-11-05 13:10:52,985 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.05s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:10:55,227 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.24s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:10:57,404 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.18s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-05 13:11:00,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-05 13:11:00,212 INFO L93 Difference]: Finished difference Result 559 states and 649 transitions. [2021-11-05 13:11:00,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-05 13:11:00,214 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 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 100 [2021-11-05 13:11:00,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-05 13:11:00,215 INFO L225 Difference]: With dead ends: 559 [2021-11-05 13:11:00,215 INFO L226 Difference]: Without dead ends: 458 [2021-11-05 13:11:00,215 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 1374.91ms TimeCoverageRelationStatistics Valid=101, Invalid=279, Unknown=0, NotChecked=0, Total=380 [2021-11-05 13:11:00,216 INFO L933 BasicCegarLoop]: 205 mSDtfsCounter, 610 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 35 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7752.04ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 980 SdHoareTripleChecker+Invalid, 435 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.82ms SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8426.54ms IncrementalHoareTripleChecker+Time [2021-11-05 13:11:00,216 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [610 Valid, 980 Invalid, 435 Unknown, 0 Unchecked, 5.82ms Time], IncrementalHoareTripleChecker [35 Valid, 397 Invalid, 3 Unknown, 0 Unchecked, 8426.54ms Time] [2021-11-05 13:11:00,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 458 states. [2021-11-05 13:11:00,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 458 to 370. [2021-11-05 13:11:00,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 370 states, 363 states have (on average 1.1928374655647382) internal successors, (433), 369 states have internal predecessors, (433), 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) [2021-11-05 13:11:00,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 370 states to 370 states and 433 transitions. [2021-11-05 13:11:00,233 INFO L78 Accepts]: Start accepts. Automaton has 370 states and 433 transitions. Word has length 100 [2021-11-05 13:11:00,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-05 13:11:00,233 INFO L470 AbstractCegarLoop]: Abstraction has 370 states and 433 transitions. [2021-11-05 13:11:00,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 10.0) internal successors, (100), 10 states have internal predecessors, (100), 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) [2021-11-05 13:11:00,234 INFO L276 IsEmpty]: Start isEmpty. Operand 370 states and 433 transitions. [2021-11-05 13:11:00,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2021-11-05 13:11:00,234 INFO L506 BasicCegarLoop]: Found error trace [2021-11-05 13:11:00,234 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, 1, 1, 1, 1, 1, 1] [2021-11-05 13:11:00,263 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2021-11-05 13:11:00,448 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable19 [2021-11-05 13:11:00,449 INFO L402 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 5 more)] === [2021-11-05 13:11:00,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-05 13:11:00,449 INFO L85 PathProgramCache]: Analyzing trace with hash 1512671877, now seen corresponding path program 1 times [2021-11-05 13:11:00,449 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-05 13:11:00,450 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154520166] [2021-11-05 13:11:00,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:11:00,450 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-05 13:11:00,499 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-05 13:11:00,499 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [385733237] [2021-11-05 13:11:00,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-05 13:11:00,499 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-05 13:11:00,500 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-05 13:11:00,505 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-05 13:11:00,506 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process Killed by 15