./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4d014703 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_table_init_bounded_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 a20f0fb44c1e014f700b9e4b1558eda154ddd78bb739e07c9e4f28b94fe2d47f --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-4d01470 [2021-11-02 13:31:46,814 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-02 13:31:46,816 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-02 13:31:46,863 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-02 13:31:46,864 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-02 13:31:46,867 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-02 13:31:46,868 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-02 13:31:46,870 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-02 13:31:46,872 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-02 13:31:46,872 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-02 13:31:46,873 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-02 13:31:46,874 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-02 13:31:46,875 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-02 13:31:46,879 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-02 13:31:46,880 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-02 13:31:46,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-02 13:31:46,886 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-02 13:31:46,887 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-02 13:31:46,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-02 13:31:46,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-02 13:31:46,894 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-02 13:31:46,895 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-02 13:31:46,896 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-02 13:31:46,897 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-02 13:31:46,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-02 13:31:46,904 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-02 13:31:46,904 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-02 13:31:46,905 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-02 13:31:46,906 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-02 13:31:46,907 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-02 13:31:46,907 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-02 13:31:46,908 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-02 13:31:46,909 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-02 13:31:46,910 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-02 13:31:46,911 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-02 13:31:46,911 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-02 13:31:46,911 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-02 13:31:46,912 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-02 13:31:46,913 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-02 13:31:46,913 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-02 13:31:46,914 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-02 13:31:46,915 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-11-02 13:31:46,935 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-02 13:31:46,937 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-02 13:31:46,937 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-02 13:31:46,937 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-02 13:31:46,938 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-02 13:31:46,938 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-02 13:31:46,939 INFO L138 SettingsManager]: * Use SBE=true [2021-11-02 13:31:46,939 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-02 13:31:46,939 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-02 13:31:46,939 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-02 13:31:46,940 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-02 13:31:46,940 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-02 13:31:46,940 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-02 13:31:46,940 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-02 13:31:46,940 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-02 13:31:46,940 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-02 13:31:46,940 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-02 13:31:46,941 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-02 13:31:46,941 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-02 13:31:46,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 13:31:46,941 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-02 13:31:46,941 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-02 13:31:46,941 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-02 13:31:46,941 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-02 13:31:46,941 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-02 13:31:46,941 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-02 13:31:46,941 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-02 13:31:46,942 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-02 13:31:46,942 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-02 13:31:46,942 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a20f0fb44c1e014f700b9e4b1558eda154ddd78bb739e07c9e4f28b94fe2d47f [2021-11-02 13:31:47,148 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-02 13:31:47,172 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-02 13:31:47,174 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-02 13:31:47,175 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-02 13:31:47,175 INFO L275 PluginConnector]: CDTParser initialized [2021-11-02 13:31:47,176 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i [2021-11-02 13:31:47,245 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b8d62a8e/b13671c80b0d43588e5627beb903367d/FLAGca060f400 [2021-11-02 13:31:47,888 INFO L306 CDTParser]: Found 1 translation units. [2021-11-02 13:31:47,888 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i [2021-11-02 13:31:47,922 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b8d62a8e/b13671c80b0d43588e5627beb903367d/FLAGca060f400 [2021-11-02 13:31:47,983 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9b8d62a8e/b13671c80b0d43588e5627beb903367d [2021-11-02 13:31:47,985 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-02 13:31:47,986 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-02 13:31:47,987 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-02 13:31:47,987 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-02 13:31:47,990 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-02 13:31:47,990 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 01:31:47" (1/1) ... [2021-11-02 13:31:47,991 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4c7aa43b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:31:47, skipping insertion in model container [2021-11-02 13:31:47,991 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 01:31:47" (1/1) ... [2021-11-02 13:31:47,996 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-02 13:31:48,101 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-02 13:31:48,315 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_table_init_bounded_harness.i[4501,4514] [2021-11-02 13:31:48,322 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_table_init_bounded_harness.i[4561,4574] [2021-11-02 13:31:48,344 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 13:31:48,356 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 13:31:49,122 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:49,123 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:49,123 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:49,124 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:49,124 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:49,139 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:49,140 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:49,142 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:49,142 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:49,144 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:49,144 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:49,145 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:49,145 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:49,434 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 13:31:49,440 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 13:31:49,444 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 13:31:49,446 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 13:31:49,446 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 13:31:49,447 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 13:31:49,447 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 13:31:49,447 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 13:31:49,448 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 13:31:49,448 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 13:31:49,561 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 13:31:49,822 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:49,823 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:49,845 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:49,847 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:49,854 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:49,854 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:49,871 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:49,872 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:49,873 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:49,873 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:49,873 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:49,874 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:49,874 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:49,915 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 13:31:49,951 INFO L203 MainTranslator]: Completed pre-run [2021-11-02 13:31:49,964 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_table_init_bounded_harness.i[4501,4514] [2021-11-02 13:31:49,964 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_table_init_bounded_harness.i[4561,4574] [2021-11-02 13:31:49,966 WARN L612 FunctionHandler]: implicit declaration of function __builtin_uaddl_overflow [2021-11-02 13:31:49,966 WARN L612 FunctionHandler]: implicit declaration of function __builtin_umull_overflow [2021-11-02 13:31:49,994 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:49,996 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:49,997 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:49,997 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:49,997 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:50,008 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:50,009 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:50,010 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:50,010 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:50,011 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:50,011 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:50,011 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:50,012 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:50,059 WARN L612 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-11-02 13:31:50,060 WARN L612 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-11-02 13:31:50,060 WARN L612 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-11-02 13:31:50,061 WARN L612 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-11-02 13:31:50,065 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-11-02 13:31:50,065 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-11-02 13:31:50,066 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-11-02 13:31:50,066 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-11-02 13:31:50,067 WARN L612 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-11-02 13:31:50,067 WARN L612 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-11-02 13:31:50,098 WARN L612 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-11-02 13:31:50,209 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:50,210 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:50,215 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:50,215 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:50,217 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:50,218 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:50,228 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:50,228 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:50,229 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:50,229 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:50,230 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:50,230 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:50,230 WARN L1529 CHandler]: Possible shadowing of function index [2021-11-02 13:31:50,244 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-02 13:31:50,507 INFO L208 MainTranslator]: Completed translation [2021-11-02 13:31:50,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:31:50 WrapperNode [2021-11-02 13:31:50,508 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-02 13:31:50,509 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-02 13:31:50,509 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-02 13:31:50,509 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-02 13:31:50,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:31:50" (1/1) ... [2021-11-02 13:31:50,611 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:31:50" (1/1) ... [2021-11-02 13:31:50,702 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-02 13:31:50,704 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-02 13:31:50,704 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-02 13:31:50,704 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-02 13:31:50,711 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:31:50" (1/1) ... [2021-11-02 13:31:50,712 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:31:50" (1/1) ... [2021-11-02 13:31:50,725 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:31:50" (1/1) ... [2021-11-02 13:31:50,725 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:31:50" (1/1) ... [2021-11-02 13:31:50,776 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:31:50" (1/1) ... [2021-11-02 13:31:50,795 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:31:50" (1/1) ... [2021-11-02 13:31:50,805 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:31:50" (1/1) ... [2021-11-02 13:31:50,818 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-02 13:31:50,819 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-02 13:31:50,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-02 13:31:50,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-02 13:31:50,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:31:50" (1/1) ... [2021-11-02 13:31:50,827 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-02 13:31:50,835 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:31:50,857 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) [2021-11-02 13:31:50,870 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 [2021-11-02 13:31:50,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-11-02 13:31:50,890 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-11-02 13:31:50,890 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-02 13:31:50,890 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-02 13:31:50,891 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-02 13:31:50,891 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-02 13:31:50,892 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_uaddl_overflow [2021-11-02 13:31:50,892 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-02 13:31:50,892 INFO L130 BoogieDeclarations]: Found specification of procedure __builtin_umull_overflow [2021-11-02 13:31:50,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-02 13:31:50,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-11-02 13:31:50,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-02 13:31:50,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-11-02 13:31:50,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-02 13:31:50,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-02 13:31:56,187 INFO L757 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##77: assume !true; [2021-11-02 13:31:56,198 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-02 13:31:56,199 INFO L299 CfgBuilder]: Removed 130 assume(true) statements. [2021-11-02 13:31:56,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 01:31:56 BoogieIcfgContainer [2021-11-02 13:31:56,201 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-02 13:31:56,204 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-02 13:31:56,204 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-02 13:31:56,207 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-02 13:31:56,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 01:31:47" (1/3) ... [2021-11-02 13:31:56,208 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42fa7b89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 01:31:56, skipping insertion in model container [2021-11-02 13:31:56,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 01:31:50" (2/3) ... [2021-11-02 13:31:56,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42fa7b89 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 01:31:56, skipping insertion in model container [2021-11-02 13:31:56,211 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 01:31:56" (3/3) ... [2021-11-02 13:31:56,212 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_init_bounded_harness.i [2021-11-02 13:31:56,217 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-02 13:31:56,218 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-11-02 13:31:56,265 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-02 13:31:56,272 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 [2021-11-02 13:31:56,272 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-11-02 13:31:56,297 INFO L276 IsEmpty]: Start isEmpty. Operand has 124 states, 120 states have (on average 1.375) internal successors, (165), 123 states have internal predecessors, (165), 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) [2021-11-02 13:31:56,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-02 13:31:56,304 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:31:56,305 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] [2021-11-02 13:31:56,305 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 13:31:56,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:31:56,310 INFO L85 PathProgramCache]: Analyzing trace with hash -227722536, now seen corresponding path program 1 times [2021-11-02 13:31:56,317 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:31:56,320 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1748852050] [2021-11-02 13:31:56,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:31:56,321 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:31:56,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:31:56,926 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:31:56,927 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:31:56,927 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1748852050] [2021-11-02 13:31:56,928 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1748852050] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:31:56,928 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:31:56,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-02 13:31:56,940 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659528488] [2021-11-02 13:31:56,946 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-02 13:31:56,946 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:31:56,974 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-02 13:31:56,974 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-02 13:31:56,977 INFO L87 Difference]: Start difference. First operand has 124 states, 120 states have (on average 1.375) internal successors, (165), 123 states have internal predecessors, (165), 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 16.5) internal successors, (33), 2 states have internal predecessors, (33), 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) [2021-11-02 13:31:59,070 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 [] [2021-11-02 13:32:00,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:32:00,069 INFO L93 Difference]: Finished difference Result 243 states and 324 transitions. [2021-11-02 13:32:00,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-02 13:32:00,071 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 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 33 [2021-11-02 13:32:00,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:32:00,080 INFO L225 Difference]: With dead ends: 243 [2021-11-02 13:32:00,080 INFO L226 Difference]: Without dead ends: 116 [2021-11-02 13:32:00,083 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 [2021-11-02 13:32:00,093 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2791.53ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 148 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.62ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3034.38ms IncrementalHoareTripleChecker+Time [2021-11-02 13:32:00,094 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 0 Invalid, 148 Unknown, 0 Unchecked, 2.62ms Time], IncrementalHoareTripleChecker [0 Valid, 147 Invalid, 1 Unknown, 0 Unchecked, 3034.38ms Time] [2021-11-02 13:32:00,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2021-11-02 13:32:00,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 116. [2021-11-02 13:32:00,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 113 states have (on average 1.2300884955752212) internal successors, (139), 115 states have internal predecessors, (139), 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) [2021-11-02 13:32:00,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 139 transitions. [2021-11-02 13:32:00,141 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 139 transitions. Word has length 33 [2021-11-02 13:32:00,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:32:00,142 INFO L470 AbstractCegarLoop]: Abstraction has 116 states and 139 transitions. [2021-11-02 13:32:00,142 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 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) [2021-11-02 13:32:00,142 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 139 transitions. [2021-11-02 13:32:00,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-02 13:32:00,145 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:32:00,145 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] [2021-11-02 13:32:00,145 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-02 13:32:00,146 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 13:32:00,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:32:00,147 INFO L85 PathProgramCache]: Analyzing trace with hash 1424964684, now seen corresponding path program 1 times [2021-11-02 13:32:00,147 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:32:00,147 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618605506] [2021-11-02 13:32:00,147 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:32:00,148 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:32:00,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:32:00,493 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:32:00,494 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:32:00,494 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618605506] [2021-11-02 13:32:00,494 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618605506] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:32:00,494 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:32:00,494 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:32:00,494 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85973167] [2021-11-02 13:32:00,496 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:32:00,496 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:32:00,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:32:00,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:32:00,496 INFO L87 Difference]: Start difference. First operand 116 states and 139 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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) [2021-11-02 13:32:02,553 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 [] [2021-11-02 13:32:05,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:32:05,870 INFO L93 Difference]: Finished difference Result 307 states and 372 transitions. [2021-11-02 13:32:05,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 13:32:05,870 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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 33 [2021-11-02 13:32:05,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:32:05,872 INFO L225 Difference]: With dead ends: 307 [2021-11-02 13:32:05,872 INFO L226 Difference]: Without dead ends: 212 [2021-11-02 13:32:05,873 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 66.15ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:32:05,873 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 116 mSDsluCounter, 380 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4846.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 642 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 15.90ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5264.10ms IncrementalHoareTripleChecker+Time [2021-11-02 13:32:05,874 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 0 Invalid, 642 Unknown, 0 Unchecked, 15.90ms Time], IncrementalHoareTripleChecker [2 Valid, 639 Invalid, 1 Unknown, 0 Unchecked, 5264.10ms Time] [2021-11-02 13:32:05,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-02 13:32:05,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 119. [2021-11-02 13:32:05,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 116 states have (on average 1.2241379310344827) internal successors, (142), 118 states have internal predecessors, (142), 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) [2021-11-02 13:32:05,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 142 transitions. [2021-11-02 13:32:05,883 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 142 transitions. Word has length 33 [2021-11-02 13:32:05,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:32:05,883 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 142 transitions. [2021-11-02 13:32:05,884 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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) [2021-11-02 13:32:05,884 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 142 transitions. [2021-11-02 13:32:05,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-11-02 13:32:05,885 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:32:05,885 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] [2021-11-02 13:32:05,885 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-02 13:32:05,885 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 13:32:05,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:32:05,886 INFO L85 PathProgramCache]: Analyzing trace with hash 403896330, now seen corresponding path program 1 times [2021-11-02 13:32:05,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:32:05,886 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [787953194] [2021-11-02 13:32:05,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:32:05,886 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:32:05,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:32:06,133 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:32:06,134 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:32:06,134 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [787953194] [2021-11-02 13:32:06,134 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [787953194] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:32:06,134 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:32:06,134 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:32:06,135 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2034699977] [2021-11-02 13:32:06,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:32:06,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:32:06,136 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:32:06,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:32:06,137 INFO L87 Difference]: Start difference. First operand 119 states and 142 transitions. Second operand has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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) [2021-11-02 13:32:08,178 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 [] [2021-11-02 13:32:10,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:32:10,640 INFO L93 Difference]: Finished difference Result 305 states and 368 transitions. [2021-11-02 13:32:10,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 13:32:10,641 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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 33 [2021-11-02 13:32:10,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:32:10,642 INFO L225 Difference]: With dead ends: 305 [2021-11-02 13:32:10,642 INFO L226 Difference]: Without dead ends: 212 [2021-11-02 13:32:10,643 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 46.59ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:32:10,644 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 235 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 398 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4072.61ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 235 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 9.24ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 398 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4428.28ms IncrementalHoareTripleChecker+Time [2021-11-02 13:32:10,644 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [235 Valid, 0 Invalid, 401 Unknown, 0 Unchecked, 9.24ms Time], IncrementalHoareTripleChecker [2 Valid, 398 Invalid, 1 Unknown, 0 Unchecked, 4428.28ms Time] [2021-11-02 13:32:10,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-02 13:32:10,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 119. [2021-11-02 13:32:10,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 116 states have (on average 1.2155172413793103) internal successors, (141), 118 states have internal predecessors, (141), 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) [2021-11-02 13:32:10,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 141 transitions. [2021-11-02 13:32:10,656 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 141 transitions. Word has length 33 [2021-11-02 13:32:10,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:32:10,656 INFO L470 AbstractCegarLoop]: Abstraction has 119 states and 141 transitions. [2021-11-02 13:32:10,657 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.25) internal successors, (33), 4 states have internal predecessors, (33), 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) [2021-11-02 13:32:10,657 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 141 transitions. [2021-11-02 13:32:10,657 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-11-02 13:32:10,657 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:32:10,658 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] [2021-11-02 13:32:10,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-02 13:32:10,658 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 13:32:10,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:32:10,658 INFO L85 PathProgramCache]: Analyzing trace with hash 1574761884, now seen corresponding path program 1 times [2021-11-02 13:32:10,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:32:10,659 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [9630073] [2021-11-02 13:32:10,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:32:10,659 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:32:10,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:32:10,954 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:32:10,954 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:32:10,954 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [9630073] [2021-11-02 13:32:10,955 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [9630073] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:32:10,955 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:32:10,955 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:32:10,955 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639336835] [2021-11-02 13:32:10,955 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:32:10,955 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:32:10,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:32:10,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:32:10,956 INFO L87 Difference]: Start difference. First operand 119 states and 141 transitions. Second operand has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2021-11-02 13:32:13,007 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 [] [2021-11-02 13:32:15,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:32:15,179 INFO L93 Difference]: Finished difference Result 301 states and 361 transitions. [2021-11-02 13:32:15,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 13:32:15,180 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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 34 [2021-11-02 13:32:15,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:32:15,181 INFO L225 Difference]: With dead ends: 301 [2021-11-02 13:32:15,181 INFO L226 Difference]: Without dead ends: 212 [2021-11-02 13:32:15,182 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.19ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:32:15,183 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 111 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 410 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3795.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.12ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 410 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4156.86ms IncrementalHoareTripleChecker+Time [2021-11-02 13:32:15,183 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [111 Valid, 0 Invalid, 412 Unknown, 0 Unchecked, 5.12ms Time], IncrementalHoareTripleChecker [1 Valid, 410 Invalid, 1 Unknown, 0 Unchecked, 4156.86ms Time] [2021-11-02 13:32:15,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 212 states. [2021-11-02 13:32:15,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 212 to 121. [2021-11-02 13:32:15,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 118 states have (on average 1.2118644067796611) internal successors, (143), 120 states have internal predecessors, (143), 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) [2021-11-02 13:32:15,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 143 transitions. [2021-11-02 13:32:15,194 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 143 transitions. Word has length 34 [2021-11-02 13:32:15,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:32:15,195 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 143 transitions. [2021-11-02 13:32:15,195 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 8.5) internal successors, (34), 4 states have internal predecessors, (34), 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) [2021-11-02 13:32:15,195 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 143 transitions. [2021-11-02 13:32:15,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-02 13:32:15,196 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:32:15,197 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] [2021-11-02 13:32:15,197 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-02 13:32:15,197 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 13:32:15,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:32:15,198 INFO L85 PathProgramCache]: Analyzing trace with hash 441374614, now seen corresponding path program 1 times [2021-11-02 13:32:15,198 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:32:15,198 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198119083] [2021-11-02 13:32:15,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:32:15,198 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:32:15,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:32:15,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:32:15,428 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:32:15,428 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198119083] [2021-11-02 13:32:15,428 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198119083] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:32:15,428 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:32:15,428 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:32:15,428 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659947626] [2021-11-02 13:32:15,428 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:32:15,429 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:32:15,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:32:15,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:32:15,430 INFO L87 Difference]: Start difference. First operand 121 states and 143 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2021-11-02 13:32:17,472 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 [] [2021-11-02 13:32:19,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:32:19,655 INFO L93 Difference]: Finished difference Result 231 states and 273 transitions. [2021-11-02 13:32:19,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 13:32:19,656 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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 36 [2021-11-02 13:32:19,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:32:19,657 INFO L225 Difference]: With dead ends: 231 [2021-11-02 13:32:19,657 INFO L226 Difference]: Without dead ends: 210 [2021-11-02 13:32:19,658 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 53.78ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:32:19,658 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 105 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 456 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3764.80ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.88ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 456 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4155.04ms IncrementalHoareTripleChecker+Time [2021-11-02 13:32:19,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [105 Valid, 0 Invalid, 458 Unknown, 0 Unchecked, 4.88ms Time], IncrementalHoareTripleChecker [1 Valid, 456 Invalid, 1 Unknown, 0 Unchecked, 4155.04ms Time] [2021-11-02 13:32:19,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-11-02 13:32:19,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 123. [2021-11-02 13:32:19,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 120 states have (on average 1.2083333333333333) internal successors, (145), 122 states have internal predecessors, (145), 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) [2021-11-02 13:32:19,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 145 transitions. [2021-11-02 13:32:19,667 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 145 transitions. Word has length 36 [2021-11-02 13:32:19,667 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:32:19,667 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 145 transitions. [2021-11-02 13:32:19,667 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2021-11-02 13:32:19,667 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 145 transitions. [2021-11-02 13:32:19,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-11-02 13:32:19,668 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:32:19,668 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] [2021-11-02 13:32:19,669 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-02 13:32:19,669 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 13:32:19,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:32:19,669 INFO L85 PathProgramCache]: Analyzing trace with hash -1494167710, now seen corresponding path program 1 times [2021-11-02 13:32:19,670 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:32:19,670 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774981221] [2021-11-02 13:32:19,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:32:19,670 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:32:19,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:32:19,905 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:32:19,906 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:32:19,906 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774981221] [2021-11-02 13:32:19,906 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774981221] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:32:19,906 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:32:19,906 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:32:19,906 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070961946] [2021-11-02 13:32:19,906 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:32:19,907 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:32:19,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:32:19,907 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:32:19,907 INFO L87 Difference]: Start difference. First operand 123 states and 145 transitions. Second operand has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2021-11-02 13:32:21,955 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 [] [2021-11-02 13:32:24,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:32:24,041 INFO L93 Difference]: Finished difference Result 144 states and 168 transitions. [2021-11-02 13:32:24,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 13:32:24,042 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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 36 [2021-11-02 13:32:24,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:32:24,042 INFO L225 Difference]: With dead ends: 144 [2021-11-02 13:32:24,042 INFO L226 Difference]: Without dead ends: 123 [2021-11-02 13:32:24,043 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 54.28ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:32:24,044 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 409 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3760.33ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.24ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 409 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4089.41ms IncrementalHoareTripleChecker+Time [2021-11-02 13:32:24,044 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 411 Unknown, 0 Unchecked, 3.24ms Time], IncrementalHoareTripleChecker [1 Valid, 409 Invalid, 1 Unknown, 0 Unchecked, 4089.41ms Time] [2021-11-02 13:32:24,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2021-11-02 13:32:24,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 121. [2021-11-02 13:32:24,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 118 states have (on average 1.194915254237288) internal successors, (141), 120 states have internal predecessors, (141), 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) [2021-11-02 13:32:24,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 141 transitions. [2021-11-02 13:32:24,051 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 141 transitions. Word has length 36 [2021-11-02 13:32:24,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:32:24,051 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 141 transitions. [2021-11-02 13:32:24,051 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.0) internal successors, (36), 4 states have internal predecessors, (36), 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) [2021-11-02 13:32:24,051 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 141 transitions. [2021-11-02 13:32:24,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-02 13:32:24,052 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:32:24,052 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] [2021-11-02 13:32:24,053 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-02 13:32:24,053 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 13:32:24,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:32:24,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1213946232, now seen corresponding path program 1 times [2021-11-02 13:32:24,054 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:32:24,054 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [188338898] [2021-11-02 13:32:24,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:32:24,054 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:32:24,123 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:32:24,123 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1340176592] [2021-11-02 13:32:24,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:32:24,124 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:32:24,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:32:24,132 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) [2021-11-02 13:32:24,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-02 13:32:24,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:32:24,930 INFO L263 TraceCheckSpWp]: Trace formula consists of 2446 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 13:32:24,938 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:32:25,202 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:32:25,202 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:32:25,202 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:32:25,202 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [188338898] [2021-11-02 13:32:25,202 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 13:32:25,203 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1340176592] [2021-11-02 13:32:25,203 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1340176592] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:32:25,203 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:32:25,203 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 13:32:25,203 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093461755] [2021-11-02 13:32:25,203 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 13:32:25,204 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:32:25,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 13:32:25,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:32:25,204 INFO L87 Difference]: Start difference. First operand 121 states and 141 transitions. Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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) [2021-11-02 13:32:27,254 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 [] [2021-11-02 13:32:30,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:32:30,762 INFO L93 Difference]: Finished difference Result 269 states and 314 transitions. [2021-11-02 13:32:30,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 13:32:30,763 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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 44 [2021-11-02 13:32:30,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:32:30,764 INFO L225 Difference]: With dead ends: 269 [2021-11-02 13:32:30,764 INFO L226 Difference]: Without dead ends: 196 [2021-11-02 13:32:30,765 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 127.89ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:32:30,765 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 165 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4966.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 646 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 10.14ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5430.08ms IncrementalHoareTripleChecker+Time [2021-11-02 13:32:30,766 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [165 Valid, 0 Invalid, 646 Unknown, 0 Unchecked, 10.14ms Time], IncrementalHoareTripleChecker [6 Valid, 639 Invalid, 1 Unknown, 0 Unchecked, 5430.08ms Time] [2021-11-02 13:32:30,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-11-02 13:32:30,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 124. [2021-11-02 13:32:30,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 121 states have (on average 1.1900826446280992) internal successors, (144), 123 states have internal predecessors, (144), 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) [2021-11-02 13:32:30,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 144 transitions. [2021-11-02 13:32:30,780 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 144 transitions. Word has length 44 [2021-11-02 13:32:30,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:32:30,781 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 144 transitions. [2021-11-02 13:32:30,782 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 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) [2021-11-02 13:32:30,782 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 144 transitions. [2021-11-02 13:32:30,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-02 13:32:30,786 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:32:30,786 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] [2021-11-02 13:32:30,817 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-11-02 13:32:31,006 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:32:31,007 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 13:32:31,007 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:32:31,007 INFO L85 PathProgramCache]: Analyzing trace with hash 782591100, now seen corresponding path program 1 times [2021-11-02 13:32:31,008 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:32:31,008 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1548280536] [2021-11-02 13:32:31,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:32:31,008 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:32:31,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:32:31,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:32:31,702 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:32:31,703 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1548280536] [2021-11-02 13:32:31,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1548280536] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:32:31,703 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:32:31,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 13:32:31,703 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144302095] [2021-11-02 13:32:31,704 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 13:32:31,704 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:32:31,704 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 13:32:31,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:32:31,705 INFO L87 Difference]: Start difference. First operand 124 states and 144 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2021-11-02 13:32:33,754 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 [] [2021-11-02 13:32:38,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:32:38,876 INFO L93 Difference]: Finished difference Result 157 states and 181 transitions. [2021-11-02 13:32:38,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-02 13:32:38,877 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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 46 [2021-11-02 13:32:38,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:32:38,878 INFO L225 Difference]: With dead ends: 157 [2021-11-02 13:32:38,878 INFO L226 Difference]: Without dead ends: 130 [2021-11-02 13:32:38,878 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 507.84ms TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2021-11-02 13:32:38,879 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 83 mSDsluCounter, 527 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 2 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6218.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.72ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6783.14ms IncrementalHoareTripleChecker+Time [2021-11-02 13:32:38,879 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [83 Valid, 0 Invalid, 750 Unknown, 0 Unchecked, 8.72ms Time], IncrementalHoareTripleChecker [2 Valid, 747 Invalid, 1 Unknown, 0 Unchecked, 6783.14ms Time] [2021-11-02 13:32:38,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2021-11-02 13:32:38,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 126. [2021-11-02 13:32:38,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 123 states have (on average 1.1869918699186992) internal successors, (146), 125 states have internal predecessors, (146), 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) [2021-11-02 13:32:38,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 146 transitions. [2021-11-02 13:32:38,896 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 146 transitions. Word has length 46 [2021-11-02 13:32:38,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:32:38,896 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 146 transitions. [2021-11-02 13:32:38,897 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 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) [2021-11-02 13:32:38,897 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 146 transitions. [2021-11-02 13:32:38,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2021-11-02 13:32:38,898 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:32:38,898 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] [2021-11-02 13:32:38,898 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-02 13:32:38,898 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 13:32:38,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:32:38,899 INFO L85 PathProgramCache]: Analyzing trace with hash -1737368834, now seen corresponding path program 1 times [2021-11-02 13:32:38,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:32:38,899 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196863801] [2021-11-02 13:32:38,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:32:38,900 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:32:38,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:32:39,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:32:39,136 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:32:39,136 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196863801] [2021-11-02 13:32:39,136 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196863801] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:32:39,136 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:32:39,136 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:32:39,137 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508901296] [2021-11-02 13:32:39,137 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:32:39,137 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:32:39,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:32:39,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:32:39,138 INFO L87 Difference]: Start difference. First operand 126 states and 146 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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) [2021-11-02 13:32:41,187 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 [] [2021-11-02 13:32:42,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:32:42,874 INFO L93 Difference]: Finished difference Result 156 states and 179 transitions. [2021-11-02 13:32:42,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 13:32:42,875 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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 46 [2021-11-02 13:32:42,875 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:32:42,875 INFO L225 Difference]: With dead ends: 156 [2021-11-02 13:32:42,876 INFO L226 Difference]: Without dead ends: 124 [2021-11-02 13:32:42,876 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 51.78ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:32:42,877 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 95 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3353.35ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 274 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.95ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3690.16ms IncrementalHoareTripleChecker+Time [2021-11-02 13:32:42,877 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [95 Valid, 0 Invalid, 274 Unknown, 0 Unchecked, 1.95ms Time], IncrementalHoareTripleChecker [1 Valid, 272 Invalid, 1 Unknown, 0 Unchecked, 3690.16ms Time] [2021-11-02 13:32:42,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2021-11-02 13:32:42,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2021-11-02 13:32:42,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 121 states have (on average 1.1735537190082646) internal successors, (142), 123 states have internal predecessors, (142), 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) [2021-11-02 13:32:42,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 142 transitions. [2021-11-02 13:32:42,885 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 142 transitions. Word has length 46 [2021-11-02 13:32:42,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:32:42,885 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 142 transitions. [2021-11-02 13:32:42,885 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 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) [2021-11-02 13:32:42,885 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 142 transitions. [2021-11-02 13:32:42,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2021-11-02 13:32:42,886 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:32:42,886 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] [2021-11-02 13:32:42,886 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-02 13:32:42,887 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 13:32:42,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:32:42,887 INFO L85 PathProgramCache]: Analyzing trace with hash -1013812041, now seen corresponding path program 1 times [2021-11-02 13:32:42,887 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:32:42,888 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836318675] [2021-11-02 13:32:42,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:32:42,888 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:32:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:32:43,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:32:43,221 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:32:43,221 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836318675] [2021-11-02 13:32:43,221 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836318675] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:32:43,221 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:32:43,221 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 13:32:43,222 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852129237] [2021-11-02 13:32:43,222 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 13:32:43,222 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:32:43,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 13:32:43,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:32:43,223 INFO L87 Difference]: Start difference. First operand 124 states and 142 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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) [2021-11-02 13:32:45,272 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 [] [2021-11-02 13:32:48,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:32:48,043 INFO L93 Difference]: Finished difference Result 153 states and 173 transitions. [2021-11-02 13:32:48,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-02 13:32:48,044 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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 48 [2021-11-02 13:32:48,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:32:48,045 INFO L225 Difference]: With dead ends: 153 [2021-11-02 13:32:48,045 INFO L226 Difference]: Without dead ends: 125 [2021-11-02 13:32:48,045 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 301.30ms TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-02 13:32:48,046 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 46 mSDsluCounter, 299 mSDsCounter, 0 mSdLazyCounter, 469 mSolverCounterSat, 8 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4191.20ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 478 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.91ms SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 469 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4593.48ms IncrementalHoareTripleChecker+Time [2021-11-02 13:32:48,046 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 0 Invalid, 478 Unknown, 0 Unchecked, 3.91ms Time], IncrementalHoareTripleChecker [8 Valid, 469 Invalid, 1 Unknown, 0 Unchecked, 4593.48ms Time] [2021-11-02 13:32:48,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2021-11-02 13:32:48,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 124. [2021-11-02 13:32:48,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 121 states have (on average 1.1570247933884297) internal successors, (140), 123 states have internal predecessors, (140), 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) [2021-11-02 13:32:48,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 140 transitions. [2021-11-02 13:32:48,052 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 140 transitions. Word has length 48 [2021-11-02 13:32:48,053 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:32:48,053 INFO L470 AbstractCegarLoop]: Abstraction has 124 states and 140 transitions. [2021-11-02 13:32:48,053 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 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) [2021-11-02 13:32:48,053 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 140 transitions. [2021-11-02 13:32:48,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-11-02 13:32:48,054 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:32:48,054 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] [2021-11-02 13:32:48,054 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-02 13:32:48,055 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 13:32:48,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:32:48,055 INFO L85 PathProgramCache]: Analyzing trace with hash 350590563, now seen corresponding path program 1 times [2021-11-02 13:32:48,055 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:32:48,055 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924363982] [2021-11-02 13:32:48,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:32:48,056 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:32:48,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:32:48,553 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:32:48,553 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:32:48,553 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924363982] [2021-11-02 13:32:48,553 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924363982] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:32:48,553 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:32:48,553 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-02 13:32:48,553 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970240357] [2021-11-02 13:32:48,554 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-02 13:32:48,554 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:32:48,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-02 13:32:48,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:32:48,554 INFO L87 Difference]: Start difference. First operand 124 states and 140 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 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) [2021-11-02 13:32:51,301 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.74s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:32:55,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:32:55,895 INFO L93 Difference]: Finished difference Result 164 states and 182 transitions. [2021-11-02 13:32:55,895 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-02 13:32:55,896 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 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 49 [2021-11-02 13:32:55,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:32:55,896 INFO L225 Difference]: With dead ends: 164 [2021-11-02 13:32:55,896 INFO L226 Difference]: Without dead ends: 128 [2021-11-02 13:32:55,897 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 355.67ms TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2021-11-02 13:32:55,897 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 14 mSDsluCounter, 576 mSDsCounter, 0 mSdLazyCounter, 782 mSolverCounterSat, 5 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6609.29ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 788 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.07ms SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 782 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7100.12ms IncrementalHoareTripleChecker+Time [2021-11-02 13:32:55,898 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [14 Valid, 0 Invalid, 788 Unknown, 0 Unchecked, 6.07ms Time], IncrementalHoareTripleChecker [5 Valid, 782 Invalid, 1 Unknown, 0 Unchecked, 7100.12ms Time] [2021-11-02 13:32:55,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2021-11-02 13:32:55,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 126. [2021-11-02 13:32:55,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 123 states have (on average 1.1382113821138211) internal successors, (140), 125 states have internal predecessors, (140), 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) [2021-11-02 13:32:55,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 140 transitions. [2021-11-02 13:32:55,904 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 140 transitions. Word has length 49 [2021-11-02 13:32:55,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:32:55,904 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 140 transitions. [2021-11-02 13:32:55,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 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) [2021-11-02 13:32:55,904 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 140 transitions. [2021-11-02 13:32:55,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2021-11-02 13:32:55,905 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:32:55,905 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] [2021-11-02 13:32:55,905 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-02 13:32:55,905 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 13:32:55,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:32:55,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1502732261, now seen corresponding path program 1 times [2021-11-02 13:32:55,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:32:55,906 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711874530] [2021-11-02 13:32:55,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:32:55,906 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:32:55,985 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:32:55,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [114426906] [2021-11-02 13:32:55,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:32:55,986 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:32:55,986 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:32:55,988 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) [2021-11-02 13:32:56,012 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-02 13:32:56,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:32:56,776 INFO L263 TraceCheckSpWp]: Trace formula consists of 2661 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-02 13:32:56,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:32:57,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:32:57,008 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:32:57,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:32:57,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711874530] [2021-11-02 13:32:57,008 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 13:32:57,008 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114426906] [2021-11-02 13:32:57,008 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114426906] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:32:57,008 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:32:57,008 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:32:57,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557839081] [2021-11-02 13:32:57,009 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:32:57,009 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:32:57,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:32:57,009 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:32:57,009 INFO L87 Difference]: Start difference. First operand 126 states and 140 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2021-11-02 13:32:59,048 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 [] [2021-11-02 13:33:01,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:33:01,223 INFO L93 Difference]: Finished difference Result 201 states and 221 transitions. [2021-11-02 13:33:01,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 13:33:01,224 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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 62 [2021-11-02 13:33:01,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:33:01,224 INFO L225 Difference]: With dead ends: 201 [2021-11-02 13:33:01,224 INFO L226 Difference]: Without dead ends: 126 [2021-11-02 13:33:01,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 50.17ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:33:01,225 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 250 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3804.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 387 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.18ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4166.74ms IncrementalHoareTripleChecker+Time [2021-11-02 13:33:01,225 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 387 Unknown, 0 Unchecked, 4.18ms Time], IncrementalHoareTripleChecker [1 Valid, 385 Invalid, 1 Unknown, 0 Unchecked, 4166.74ms Time] [2021-11-02 13:33:01,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-11-02 13:33:01,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 123. [2021-11-02 13:33:01,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 120 states have (on average 1.125) internal successors, (135), 122 states have internal predecessors, (135), 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) [2021-11-02 13:33:01,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 135 transitions. [2021-11-02 13:33:01,232 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 135 transitions. Word has length 62 [2021-11-02 13:33:01,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:33:01,232 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 135 transitions. [2021-11-02 13:33:01,232 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 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) [2021-11-02 13:33:01,232 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 135 transitions. [2021-11-02 13:33:01,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-11-02 13:33:01,234 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:33:01,234 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] [2021-11-02 13:33:01,259 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-02 13:33:01,443 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,SelfDestructingSolverStorable11 [2021-11-02 13:33:01,444 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 13:33:01,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:33:01,444 INFO L85 PathProgramCache]: Analyzing trace with hash 1802692899, now seen corresponding path program 1 times [2021-11-02 13:33:01,444 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:33:01,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2135392600] [2021-11-02 13:33:01,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:33:01,445 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:33:01,516 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:33:01,517 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [951445322] [2021-11-02 13:33:01,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:33:01,517 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:33:01,517 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:33:01,518 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) [2021-11-02 13:33:01,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-02 13:33:02,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:33:02,190 INFO L263 TraceCheckSpWp]: Trace formula consists of 2725 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-02 13:33:02,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:33:02,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:33:02,396 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:33:02,396 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:33:02,396 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2135392600] [2021-11-02 13:33:02,396 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 13:33:02,397 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [951445322] [2021-11-02 13:33:02,397 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [951445322] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:33:02,397 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:33:02,397 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 13:33:02,397 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1751708610] [2021-11-02 13:33:02,397 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 13:33:02,397 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:33:02,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 13:33:02,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:33:02,398 INFO L87 Difference]: Start difference. First operand 123 states and 135 transitions. Second operand has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2021-11-02 13:33:04,881 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.48s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:33:08,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:33:08,103 INFO L93 Difference]: Finished difference Result 240 states and 258 transitions. [2021-11-02 13:33:08,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 13:33:08,104 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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 65 [2021-11-02 13:33:08,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:33:08,105 INFO L225 Difference]: With dead ends: 240 [2021-11-02 13:33:08,105 INFO L226 Difference]: Without dead ends: 200 [2021-11-02 13:33:08,105 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 84.50ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:33:08,106 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 149 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 583 mSolverCounterSat, 6 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5135.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 5.90ms SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 583 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5619.11ms IncrementalHoareTripleChecker+Time [2021-11-02 13:33:08,106 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [149 Valid, 0 Invalid, 590 Unknown, 0 Unchecked, 5.90ms Time], IncrementalHoareTripleChecker [6 Valid, 583 Invalid, 1 Unknown, 0 Unchecked, 5619.11ms Time] [2021-11-02 13:33:08,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2021-11-02 13:33:08,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 126. [2021-11-02 13:33:08,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 123 states have (on average 1.1219512195121952) internal successors, (138), 125 states have internal predecessors, (138), 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) [2021-11-02 13:33:08,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 138 transitions. [2021-11-02 13:33:08,131 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 138 transitions. Word has length 65 [2021-11-02 13:33:08,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:33:08,132 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 138 transitions. [2021-11-02 13:33:08,132 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.0) internal successors, (65), 5 states have internal predecessors, (65), 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) [2021-11-02 13:33:08,132 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 138 transitions. [2021-11-02 13:33:08,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-02 13:33:08,133 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:33:08,133 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] [2021-11-02 13:33:08,163 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-11-02 13:33:08,343 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:33:08,343 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 13:33:08,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:33:08,344 INFO L85 PathProgramCache]: Analyzing trace with hash -1203315713, now seen corresponding path program 1 times [2021-11-02 13:33:08,344 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:33:08,344 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305027092] [2021-11-02 13:33:08,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:33:08,344 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:33:08,409 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:33:08,409 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2081266097] [2021-11-02 13:33:08,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:33:08,409 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:33:08,410 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:33:08,410 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) [2021-11-02 13:33:08,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-11-02 13:33:09,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:33:09,137 INFO L263 TraceCheckSpWp]: Trace formula consists of 2734 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-02 13:33:09,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:33:09,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:33:09,344 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:33:09,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:33:09,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305027092] [2021-11-02 13:33:09,345 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 13:33:09,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081266097] [2021-11-02 13:33:09,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081266097] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:33:09,345 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:33:09,345 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-02 13:33:09,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709034755] [2021-11-02 13:33:09,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-02 13:33:09,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:33:09,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-02 13:33:09,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-02 13:33:09,347 INFO L87 Difference]: Start difference. First operand 126 states and 138 transitions. Second operand has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 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) [2021-11-02 13:33:11,879 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.53s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:33:13,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:33:13,692 INFO L93 Difference]: Finished difference Result 166 states and 179 transitions. [2021-11-02 13:33:13,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-02 13:33:13,693 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 states have internal predecessors, (67), 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 [2021-11-02 13:33:13,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:33:13,693 INFO L225 Difference]: With dead ends: 166 [2021-11-02 13:33:13,693 INFO L226 Difference]: Without dead ends: 126 [2021-11-02 13:33:13,694 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 64 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 72.49ms TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:33:13,694 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 1 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 380 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3877.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.88ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 380 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4291.72ms IncrementalHoareTripleChecker+Time [2021-11-02 13:33:13,694 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 0 Invalid, 381 Unknown, 0 Unchecked, 1.88ms Time], IncrementalHoareTripleChecker [0 Valid, 380 Invalid, 1 Unknown, 0 Unchecked, 4291.72ms Time] [2021-11-02 13:33:13,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2021-11-02 13:33:13,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 123. [2021-11-02 13:33:13,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 123 states, 120 states have (on average 1.1166666666666667) internal successors, (134), 122 states have internal predecessors, (134), 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) [2021-11-02 13:33:13,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 134 transitions. [2021-11-02 13:33:13,699 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 134 transitions. Word has length 67 [2021-11-02 13:33:13,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:33:13,699 INFO L470 AbstractCegarLoop]: Abstraction has 123 states and 134 transitions. [2021-11-02 13:33:13,700 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.75) internal successors, (67), 4 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) [2021-11-02 13:33:13,700 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 134 transitions. [2021-11-02 13:33:13,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-11-02 13:33:13,700 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:33:13,700 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] [2021-11-02 13:33:13,730 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-11-02 13:33:13,927 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:33:13,928 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 13:33:13,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:33:13,928 INFO L85 PathProgramCache]: Analyzing trace with hash -270416806, now seen corresponding path program 1 times [2021-11-02 13:33:13,928 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:33:13,928 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227901485] [2021-11-02 13:33:13,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:33:13,928 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:33:13,996 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:33:13,996 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [651055142] [2021-11-02 13:33:13,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:33:13,997 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:33:13,997 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:33:14,032 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) [2021-11-02 13:33:14,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-11-02 13:33:14,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:33:14,753 INFO L263 TraceCheckSpWp]: Trace formula consists of 2750 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-02 13:33:14,757 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:33:15,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:33:15,065 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:33:15,066 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:33:15,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1227901485] [2021-11-02 13:33:15,066 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 13:33:15,066 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651055142] [2021-11-02 13:33:15,066 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651055142] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:33:15,066 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:33:15,066 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 13:33:15,066 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449346645] [2021-11-02 13:33:15,067 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 13:33:15,067 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:33:15,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 13:33:15,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:33:15,067 INFO L87 Difference]: Start difference. First operand 123 states and 134 transitions. Second operand has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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) [2021-11-02 13:33:17,112 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 [] [2021-11-02 13:33:19,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:33:19,788 INFO L93 Difference]: Finished difference Result 251 states and 266 transitions. [2021-11-02 13:33:19,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-02 13:33:19,788 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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 71 [2021-11-02 13:33:19,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:33:19,789 INFO L225 Difference]: With dead ends: 251 [2021-11-02 13:33:19,789 INFO L226 Difference]: Without dead ends: 210 [2021-11-02 13:33:19,790 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 125.77ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-02 13:33:19,790 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 129 mSDsluCounter, 399 mSDsCounter, 0 mSdLazyCounter, 540 mSolverCounterSat, 1 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4299.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 542 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 4.39ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 540 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4653.92ms IncrementalHoareTripleChecker+Time [2021-11-02 13:33:19,791 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [129 Valid, 0 Invalid, 542 Unknown, 0 Unchecked, 4.39ms Time], IncrementalHoareTripleChecker [1 Valid, 540 Invalid, 1 Unknown, 0 Unchecked, 4653.92ms Time] [2021-11-02 13:33:19,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 210 states. [2021-11-02 13:33:19,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 210 to 126. [2021-11-02 13:33:19,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 123 states have (on average 1.113821138211382) internal successors, (137), 125 states have internal predecessors, (137), 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) [2021-11-02 13:33:19,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 137 transitions. [2021-11-02 13:33:19,797 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 137 transitions. Word has length 71 [2021-11-02 13:33:19,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:33:19,798 INFO L470 AbstractCegarLoop]: Abstraction has 126 states and 137 transitions. [2021-11-02 13:33:19,798 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.2) internal successors, (71), 5 states have internal predecessors, (71), 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) [2021-11-02 13:33:19,798 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 137 transitions. [2021-11-02 13:33:19,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-11-02 13:33:19,799 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:33:19,799 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] [2021-11-02 13:33:19,823 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-11-02 13:33:20,003 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,SelfDestructingSolverStorable14 [2021-11-02 13:33:20,004 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 13:33:20,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:33:20,004 INFO L85 PathProgramCache]: Analyzing trace with hash -1344429706, now seen corresponding path program 1 times [2021-11-02 13:33:20,004 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:33:20,004 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [842978538] [2021-11-02 13:33:20,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:33:20,004 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:33:20,068 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:33:20,068 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1882079275] [2021-11-02 13:33:20,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:33:20,069 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:33:20,069 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:33:20,070 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) [2021-11-02 13:33:20,071 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-11-02 13:33:20,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-02 13:33:20,707 INFO L263 TraceCheckSpWp]: Trace formula consists of 2767 conjuncts, 13 conjunts are in the unsatisfiable core [2021-11-02 13:33:20,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-02 13:33:21,001 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-02 13:33:21,001 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-02 13:33:21,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-02 13:33:21,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [842978538] [2021-11-02 13:33:21,002 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unknown [2021-11-02 13:33:21,002 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1882079275] [2021-11-02 13:33:21,002 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1882079275] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-02 13:33:21,002 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-11-02 13:33:21,002 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-02 13:33:21,002 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1762858043] [2021-11-02 13:33:21,003 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-02 13:33:21,003 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-02 13:33:21,003 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-02 13:33:21,003 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-02 13:33:21,003 INFO L87 Difference]: Start difference. First operand 126 states and 137 transitions. Second operand has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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) [2021-11-02 13:33:23,614 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.61s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-02 13:33:26,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-02 13:33:26,207 INFO L93 Difference]: Finished difference Result 167 states and 179 transitions. [2021-11-02 13:33:26,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-02 13:33:26,207 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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 73 [2021-11-02 13:33:26,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-02 13:33:26,208 INFO L225 Difference]: With dead ends: 167 [2021-11-02 13:33:26,209 INFO L226 Difference]: Without dead ends: 121 [2021-11-02 13:33:26,209 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 143.28ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-02 13:33:26,209 INFO L933 BasicCegarLoop]: 0 mSDtfsCounter, 3 mSDsluCounter, 364 mSDsCounter, 0 mSdLazyCounter, 501 mSolverCounterSat, 0 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4647.77ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 0 SdHoareTripleChecker+Invalid, 502 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.94ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 501 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5111.15ms IncrementalHoareTripleChecker+Time [2021-11-02 13:33:26,210 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 0 Invalid, 502 Unknown, 0 Unchecked, 1.94ms Time], IncrementalHoareTripleChecker [0 Valid, 501 Invalid, 1 Unknown, 0 Unchecked, 5111.15ms Time] [2021-11-02 13:33:26,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2021-11-02 13:33:26,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2021-11-02 13:33:26,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 118 states have (on average 1.1016949152542372) internal successors, (130), 120 states have internal predecessors, (130), 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) [2021-11-02 13:33:26,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 130 transitions. [2021-11-02 13:33:26,216 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 130 transitions. Word has length 73 [2021-11-02 13:33:26,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-02 13:33:26,216 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 130 transitions. [2021-11-02 13:33:26,216 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.6) internal successors, (73), 5 states have internal predecessors, (73), 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) [2021-11-02 13:33:26,216 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 130 transitions. [2021-11-02 13:33:26,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2021-11-02 13:33:26,217 INFO L506 BasicCegarLoop]: Found error trace [2021-11-02 13:33:26,217 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] [2021-11-02 13:33:26,252 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-11-02 13:33:26,431 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2021-11-02 13:33:26,432 INFO L402 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-02 13:33:26,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-02 13:33:26,432 INFO L85 PathProgramCache]: Analyzing trace with hash -1199107289, now seen corresponding path program 1 times [2021-11-02 13:33:26,432 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-02 13:33:26,432 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574836388] [2021-11-02 13:33:26,432 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:33:26,433 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-02 13:33:26,494 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-11-02 13:33:26,494 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [167247334] [2021-11-02 13:33:26,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-02 13:33:26,494 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-02 13:33:26,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-11-02 13:33:26,496 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) [2021-11-02 13:33:26,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process Killed by 15