java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-835382a-m [2018-04-05 16:07:33,359 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-04-05 16:07:33,362 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-04-05 16:07:33,418 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-04-05 16:07:33,418 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-04-05 16:07:33,419 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-04-05 16:07:33,420 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-04-05 16:07:33,437 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-04-05 16:07:33,439 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-04-05 16:07:33,449 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-04-05 16:07:33,450 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-04-05 16:07:33,450 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-04-05 16:07:33,451 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-04-05 16:07:33,462 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-04-05 16:07:33,463 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-04-05 16:07:33,465 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-04-05 16:07:33,484 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-04-05 16:07:33,485 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-04-05 16:07:33,487 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-04-05 16:07:33,492 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-04-05 16:07:33,499 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-04-05 16:07:33,499 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-04-05 16:07:33,500 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-04-05 16:07:33,501 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-04-05 16:07:33,502 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-04-05 16:07:33,503 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-04-05 16:07:33,504 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-04-05 16:07:33,517 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-04-05 16:07:33,518 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-04-05 16:07:33,518 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-04-05 16:07:33,519 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-04-05 16:07:33,519 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf [2018-04-05 16:07:33,596 INFO L110 SettingsManager]: Loading preferences was successful [2018-04-05 16:07:33,596 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-04-05 16:07:33,596 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-04-05 16:07:33,597 INFO L133 SettingsManager]: * ultimate.logging.details=de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation=DEBUG; [2018-04-05 16:07:33,597 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-04-05 16:07:33,598 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-04-05 16:07:33,598 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-04-05 16:07:33,598 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-04-05 16:07:33,598 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-04-05 16:07:33,606 INFO L131 SettingsManager]: Preferences of LTL2Aut differ from their defaults: [2018-04-05 16:07:33,607 INFO L133 SettingsManager]: * Property to check=[] a a: x > 42 [2018-04-05 16:07:33,607 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-04-05 16:07:33,607 INFO L133 SettingsManager]: * sizeof long=4 [2018-04-05 16:07:33,607 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-04-05 16:07:33,608 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-04-05 16:07:33,608 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-04-05 16:07:33,608 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-04-05 16:07:33,608 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-04-05 16:07:33,608 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-04-05 16:07:33,609 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-04-05 16:07:33,609 INFO L133 SettingsManager]: * sizeof long double=12 [2018-04-05 16:07:33,609 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-04-05 16:07:33,609 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-04-05 16:07:33,609 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-04-05 16:07:33,610 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-04-05 16:07:33,610 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-05 16:07:33,610 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-04-05 16:07:33,610 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-04-05 16:07:33,610 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-04-05 16:07:33,611 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-04-05 16:07:33,611 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-04-05 16:07:33,611 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 16:07:33,611 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-04-05 16:07:33,612 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-04-05 16:07:33,612 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-04-05 16:07:33,612 INFO L131 SettingsManager]: Preferences of Boogie Printer differ from their defaults: [2018-04-05 16:07:33,613 INFO L133 SettingsManager]: * Dump path:=C:\Users\alex\AppData\Local\Temp\ [2018-04-05 16:07:33,734 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-04-05 16:07:33,777 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-04-05 16:07:33,789 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-04-05 16:07:33,802 INFO L271 PluginConnector]: Initializing CDTParser... [2018-04-05 16:07:33,802 INFO L276 PluginConnector]: CDTParser initialized [2018-04-05 16:07:33,803 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-memsafety/openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:34,518 INFO L225 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAGbaf4bc2b0 [2018-04-05 16:07:35,034 INFO L287 CDTParser]: IsIndexed: true [2018-04-05 16:07:35,035 INFO L288 CDTParser]: Found 1 translation units. [2018-04-05 16:07:35,035 INFO L168 CDTParser]: Scanning openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,078 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-04-05 16:07:35,078 INFO L215 ultiparseSymbolTable]: [2018-04-05 16:07:35,078 INFO L218 ultiparseSymbolTable]: Function table: [2018-04-05 16:07:35,078 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcat ('cstrcat') in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,079 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____bswap_64 ('__bswap_64') in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,082 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,082 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____bswap_32 ('__bswap_32') in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,082 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-04-05 16:07:35,082 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__pthread_rwlockattr_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,083 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____int16_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,083 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____u_long in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,083 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__daddr_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,083 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__u_char in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,083 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__ulong in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,083 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____pthread_list_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,083 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__pthread_barrierattr_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,084 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____off_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,084 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__blkcnt_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,084 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__u_long in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,084 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__clock_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,084 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____ino_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,084 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____syscall_slong_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,084 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____caddr_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,084 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__fd_mask in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,085 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__pthread_key_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,085 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____blkcnt_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,085 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__pthread_cond_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,085 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____fsid_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,085 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____ino64_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,085 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____sigset_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,085 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__blksize_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,085 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__pthread_spinlock_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,086 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__sigset_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,086 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__fsblkcnt_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,086 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____uint32_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,086 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__div_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,086 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__uint in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,086 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____int32_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,086 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____suseconds_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,086 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__u_int8_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,087 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__u_int16_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,087 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__quad_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,087 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____fd_mask in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,087 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__int16_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,087 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____rlim_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,087 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__clockid_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,087 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____clockid_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,087 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__key_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,088 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____sig_atomic_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,088 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__wchar_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,088 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__uid_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,088 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__lldiv_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,088 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__pthread_attr_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,088 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____pid_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,088 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__pthread_mutexattr_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,089 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____timer_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,089 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__pthread_barrier_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,089 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____fsblkcnt64_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,089 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____u_char in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,089 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____u_quad_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,089 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____off64_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,089 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__u_int32_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,089 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____quad_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,090 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__pthread_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,090 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____syscall_ulong_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,090 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____id_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,090 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____gid_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,090 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__u_int in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,090 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__gid_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,090 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__ldiv_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,090 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__off_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,091 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__u_short in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,091 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____blkcnt64_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,091 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__u_int64_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,091 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__timer_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,091 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____ssize_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,091 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____int8_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,091 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__pid_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,091 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__fsfilcnt_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,091 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__ino_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,092 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____nlink_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,093 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____fsfilcnt64_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,093 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____socklen_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,093 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__int32_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,093 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__register_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,093 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____uint64_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,094 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____fsword_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,094 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__pthread_once_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,094 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____intptr_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,094 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____uid_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,094 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__ssize_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,094 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__size_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,094 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__nlink_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,094 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__caddr_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,094 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__id_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,095 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____mode_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,095 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____u_int in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,095 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__pthread_condattr_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,095 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__dev_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,095 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__loff_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,095 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____clock_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,095 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__time_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,095 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__pthread_rwlock_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,096 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____uint8_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,096 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____key_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,096 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__fsid_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,096 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____dev_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,096 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____int64_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,096 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____fsblkcnt_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,096 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____u_short in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,096 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__pthread_mutex_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,096 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__fd_set in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,097 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____useconds_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,097 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__mode_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,097 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__suseconds_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,097 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____WAIT_STATUS in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,097 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__u_quad_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,097 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__ushort in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,097 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____time_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,097 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____loff_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,098 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__int8_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,105 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__int64_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,105 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____fsfilcnt_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,105 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____uint16_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,105 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____rlim64_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,105 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____daddr_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,106 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____blksize_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,106 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____qaddr_t in openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:35,188 INFO L330 CDTParser]: Deleted temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAGbaf4bc2b0 [2018-04-05 16:07:35,204 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-04-05 16:07:35,208 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-04-05 16:07:35,209 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-04-05 16:07:35,209 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-04-05 16:07:35,233 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-04-05 16:07:35,234 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 04:07:35" (1/1) ... [2018-04-05 16:07:35,245 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8c39958 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:07:35, skipping insertion in model container [2018-04-05 16:07:35,246 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 04:07:35" (1/1) ... [2018-04-05 16:07:35,278 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-05 16:07:35,381 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-05 16:07:35,798 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-05 16:07:36,002 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-05 16:07:36,022 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 112 non ball SCCs. Number of states in SCCs 112. [2018-04-05 16:07:36,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:07:36 WrapperNode [2018-04-05 16:07:36,153 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-04-05 16:07:36,154 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-04-05 16:07:36,154 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-04-05 16:07:36,155 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-04-05 16:07:36,180 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:07:36" (1/1) ... [2018-04-05 16:07:36,180 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:07:36" (1/1) ... [2018-04-05 16:07:36,221 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:07:36" (1/1) ... [2018-04-05 16:07:36,223 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:07:36" (1/1) ... [2018-04-05 16:07:36,280 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:07:36" (1/1) ... [2018-04-05 16:07:36,285 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:07:36" (1/1) ... [2018-04-05 16:07:36,288 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:07:36" (1/1) ... [2018-04-05 16:07:36,297 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-04-05 16:07:36,297 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-04-05 16:07:36,297 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-04-05 16:07:36,298 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-04-05 16:07:36,299 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:07:36" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-05 16:07:36,723 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-04-05 16:07:36,723 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-04-05 16:07:36,723 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____bswap_32 [2018-04-05 16:07:36,723 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____bswap_64 [2018-04-05 16:07:36,723 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcat [2018-04-05 16:07:36,724 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-04-05 16:07:36,724 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____bswap_32 [2018-04-05 16:07:36,724 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i____bswap_64 [2018-04-05 16:07:36,724 INFO L128 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-04-05 16:07:36,724 INFO L128 BoogieDeclarations]: Found specification of procedure atof [2018-04-05 16:07:36,724 INFO L128 BoogieDeclarations]: Found specification of procedure atoi [2018-04-05 16:07:36,724 INFO L128 BoogieDeclarations]: Found specification of procedure atol [2018-04-05 16:07:36,724 INFO L128 BoogieDeclarations]: Found specification of procedure atoll [2018-04-05 16:07:36,725 INFO L128 BoogieDeclarations]: Found specification of procedure strtod [2018-04-05 16:07:36,731 INFO L128 BoogieDeclarations]: Found specification of procedure strtof [2018-04-05 16:07:36,731 INFO L128 BoogieDeclarations]: Found specification of procedure strtold [2018-04-05 16:07:36,731 INFO L128 BoogieDeclarations]: Found specification of procedure strtol [2018-04-05 16:07:36,731 INFO L128 BoogieDeclarations]: Found specification of procedure strtoul [2018-04-05 16:07:36,732 INFO L128 BoogieDeclarations]: Found specification of procedure strtoq [2018-04-05 16:07:36,732 INFO L128 BoogieDeclarations]: Found specification of procedure strtouq [2018-04-05 16:07:36,732 INFO L128 BoogieDeclarations]: Found specification of procedure strtoll [2018-04-05 16:07:36,732 INFO L128 BoogieDeclarations]: Found specification of procedure strtoull [2018-04-05 16:07:36,732 INFO L128 BoogieDeclarations]: Found specification of procedure l64a [2018-04-05 16:07:36,732 INFO L128 BoogieDeclarations]: Found specification of procedure a64l [2018-04-05 16:07:36,733 INFO L128 BoogieDeclarations]: Found specification of procedure select [2018-04-05 16:07:36,733 INFO L128 BoogieDeclarations]: Found specification of procedure pselect [2018-04-05 16:07:36,733 INFO L128 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-04-05 16:07:36,733 INFO L128 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-04-05 16:07:36,733 INFO L128 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-04-05 16:07:36,733 INFO L128 BoogieDeclarations]: Found specification of procedure random [2018-04-05 16:07:36,733 INFO L128 BoogieDeclarations]: Found specification of procedure srandom [2018-04-05 16:07:36,734 INFO L128 BoogieDeclarations]: Found specification of procedure initstate [2018-04-05 16:07:36,734 INFO L128 BoogieDeclarations]: Found specification of procedure setstate [2018-04-05 16:07:36,734 INFO L128 BoogieDeclarations]: Found specification of procedure random_r [2018-04-05 16:07:36,734 INFO L128 BoogieDeclarations]: Found specification of procedure srandom_r [2018-04-05 16:07:36,734 INFO L128 BoogieDeclarations]: Found specification of procedure initstate_r [2018-04-05 16:07:36,734 INFO L128 BoogieDeclarations]: Found specification of procedure setstate_r [2018-04-05 16:07:36,735 INFO L128 BoogieDeclarations]: Found specification of procedure rand [2018-04-05 16:07:36,735 INFO L128 BoogieDeclarations]: Found specification of procedure srand [2018-04-05 16:07:36,735 INFO L128 BoogieDeclarations]: Found specification of procedure rand_r [2018-04-05 16:07:36,735 INFO L128 BoogieDeclarations]: Found specification of procedure drand48 [2018-04-05 16:07:36,735 INFO L128 BoogieDeclarations]: Found specification of procedure erand48 [2018-04-05 16:07:36,735 INFO L128 BoogieDeclarations]: Found specification of procedure lrand48 [2018-04-05 16:07:36,736 INFO L128 BoogieDeclarations]: Found specification of procedure nrand48 [2018-04-05 16:07:36,736 INFO L128 BoogieDeclarations]: Found specification of procedure mrand48 [2018-04-05 16:07:36,736 INFO L128 BoogieDeclarations]: Found specification of procedure jrand48 [2018-04-05 16:07:36,751 INFO L128 BoogieDeclarations]: Found specification of procedure srand48 [2018-04-05 16:07:36,751 INFO L128 BoogieDeclarations]: Found specification of procedure seed48 [2018-04-05 16:07:36,751 INFO L128 BoogieDeclarations]: Found specification of procedure lcong48 [2018-04-05 16:07:36,751 INFO L128 BoogieDeclarations]: Found specification of procedure drand48_r [2018-04-05 16:07:36,751 INFO L128 BoogieDeclarations]: Found specification of procedure erand48_r [2018-04-05 16:07:36,752 INFO L128 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-04-05 16:07:36,752 INFO L128 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-04-05 16:07:36,752 INFO L128 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-04-05 16:07:36,752 INFO L128 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-04-05 16:07:36,752 INFO L128 BoogieDeclarations]: Found specification of procedure srand48_r [2018-04-05 16:07:36,752 INFO L128 BoogieDeclarations]: Found specification of procedure seed48_r [2018-04-05 16:07:36,752 INFO L128 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-04-05 16:07:36,753 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-04-05 16:07:36,753 INFO L128 BoogieDeclarations]: Found specification of procedure calloc [2018-04-05 16:07:36,753 INFO L128 BoogieDeclarations]: Found specification of procedure realloc [2018-04-05 16:07:36,753 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-04-05 16:07:36,753 INFO L128 BoogieDeclarations]: Found specification of procedure cfree [2018-04-05 16:07:36,753 INFO L128 BoogieDeclarations]: Found specification of procedure alloca [2018-04-05 16:07:36,753 INFO L128 BoogieDeclarations]: Found specification of procedure valloc [2018-04-05 16:07:36,754 INFO L128 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-04-05 16:07:36,754 INFO L128 BoogieDeclarations]: Found specification of procedure abort [2018-04-05 16:07:36,754 INFO L128 BoogieDeclarations]: Found specification of procedure atexit [2018-04-05 16:07:36,754 INFO L128 BoogieDeclarations]: Found specification of procedure on_exit [2018-04-05 16:07:36,754 INFO L128 BoogieDeclarations]: Found specification of procedure exit [2018-04-05 16:07:36,754 INFO L128 BoogieDeclarations]: Found specification of procedure _Exit [2018-04-05 16:07:36,754 INFO L128 BoogieDeclarations]: Found specification of procedure getenv [2018-04-05 16:07:36,755 INFO L128 BoogieDeclarations]: Found specification of procedure putenv [2018-04-05 16:07:36,765 INFO L128 BoogieDeclarations]: Found specification of procedure setenv [2018-04-05 16:07:36,765 INFO L128 BoogieDeclarations]: Found specification of procedure unsetenv [2018-04-05 16:07:36,765 INFO L128 BoogieDeclarations]: Found specification of procedure clearenv [2018-04-05 16:07:36,765 INFO L128 BoogieDeclarations]: Found specification of procedure mktemp [2018-04-05 16:07:36,766 INFO L128 BoogieDeclarations]: Found specification of procedure mkstemp [2018-04-05 16:07:36,766 INFO L128 BoogieDeclarations]: Found specification of procedure mkstemps [2018-04-05 16:07:36,766 INFO L128 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-04-05 16:07:36,766 INFO L128 BoogieDeclarations]: Found specification of procedure system [2018-04-05 16:07:36,766 INFO L128 BoogieDeclarations]: Found specification of procedure realpath [2018-04-05 16:07:36,766 INFO L128 BoogieDeclarations]: Found specification of procedure bsearch [2018-04-05 16:07:36,766 INFO L128 BoogieDeclarations]: Found specification of procedure qsort [2018-04-05 16:07:36,774 INFO L128 BoogieDeclarations]: Found specification of procedure abs [2018-04-05 16:07:36,774 INFO L128 BoogieDeclarations]: Found specification of procedure labs [2018-04-05 16:07:36,774 INFO L128 BoogieDeclarations]: Found specification of procedure llabs [2018-04-05 16:07:36,774 INFO L128 BoogieDeclarations]: Found specification of procedure div [2018-04-05 16:07:36,774 INFO L128 BoogieDeclarations]: Found specification of procedure ldiv [2018-04-05 16:07:36,775 INFO L128 BoogieDeclarations]: Found specification of procedure lldiv [2018-04-05 16:07:36,775 INFO L128 BoogieDeclarations]: Found specification of procedure ecvt [2018-04-05 16:07:36,775 INFO L128 BoogieDeclarations]: Found specification of procedure fcvt [2018-04-05 16:07:36,775 INFO L128 BoogieDeclarations]: Found specification of procedure gcvt [2018-04-05 16:07:36,775 INFO L128 BoogieDeclarations]: Found specification of procedure qecvt [2018-04-05 16:07:36,775 INFO L128 BoogieDeclarations]: Found specification of procedure qfcvt [2018-04-05 16:07:36,775 INFO L128 BoogieDeclarations]: Found specification of procedure qgcvt [2018-04-05 16:07:36,776 INFO L128 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-04-05 16:07:36,776 INFO L128 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-04-05 16:07:36,776 INFO L128 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-04-05 16:07:36,776 INFO L128 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-04-05 16:07:36,776 INFO L128 BoogieDeclarations]: Found specification of procedure mblen [2018-04-05 16:07:36,776 INFO L128 BoogieDeclarations]: Found specification of procedure mbtowc [2018-04-05 16:07:36,776 INFO L128 BoogieDeclarations]: Found specification of procedure wctomb [2018-04-05 16:07:36,776 INFO L128 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-04-05 16:07:36,777 INFO L128 BoogieDeclarations]: Found specification of procedure wcstombs [2018-04-05 16:07:36,777 INFO L128 BoogieDeclarations]: Found specification of procedure rpmatch [2018-04-05 16:07:36,777 INFO L128 BoogieDeclarations]: Found specification of procedure getsubopt [2018-04-05 16:07:36,777 INFO L128 BoogieDeclarations]: Found specification of procedure getloadavg [2018-04-05 16:07:36,777 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-04-05 16:07:36,777 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcat [2018-04-05 16:07:36,777 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-04-05 16:07:36,778 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-04-05 16:07:36,789 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-04-05 16:07:36,789 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-04-05 16:07:36,789 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-04-05 16:07:36,789 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-04-05 16:07:36,790 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-04-05 16:07:36,790 INFO L128 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-04-05 16:07:37,997 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-04-05 16:07:37,997 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 04:07:37 BoogieIcfgContainer [2018-04-05 16:07:37,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-04-05 16:07:37,999 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-04-05 16:07:37,999 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-04-05 16:07:38,002 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-04-05 16:07:38,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.04 04:07:35" (1/3) ... [2018-04-05 16:07:38,003 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29155ae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 04:07:38, skipping insertion in model container [2018-04-05 16:07:38,003 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 04:07:36" (2/3) ... [2018-04-05 16:07:38,004 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29155ae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 04:07:38, skipping insertion in model container [2018-04-05 16:07:38,008 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 04:07:37" (3/3) ... [2018-04-05 16:07:38,010 INFO L107 eAbstractionObserver]: Analyzing ICFG openbsd_cstrcat-alloca_true-valid-memsafety_true-termination.i [2018-04-05 16:07:38,036 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-04-05 16:07:38,065 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 11 error locations. [2018-04-05 16:07:38,196 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-04-05 16:07:38,197 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-04-05 16:07:38,197 INFO L370 AbstractCegarLoop]: Hoare is true [2018-04-05 16:07:38,197 INFO L371 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-04-05 16:07:38,198 INFO L372 AbstractCegarLoop]: Backedges is TWOTRACK [2018-04-05 16:07:38,208 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-04-05 16:07:38,208 INFO L374 AbstractCegarLoop]: Difference is false [2018-04-05 16:07:38,208 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-04-05 16:07:38,208 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-04-05 16:07:38,209 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-04-05 16:07:38,255 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states. [2018-04-05 16:07:38,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-04-05 16:07:38,274 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 16:07:38,290 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 16:07:38,290 INFO L408 AbstractCegarLoop]: === Iteration 1 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr5RequiresViolation]=== [2018-04-05 16:07:38,305 INFO L82 PathProgramCache]: Analyzing trace with hash 703701311, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 16:07:38,372 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 16:07:38,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 16:07:38,519 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 16:07:38,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:07:38,628 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 16:07:38,684 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:07:38,749 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 16:07:38,749 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2018-04-05 16:07:38,758 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-04-05 16:07:38,784 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-04-05 16:07:38,785 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-04-05 16:07:38,789 INFO L87 Difference]: Start difference. First operand 79 states. Second operand 3 states. [2018-04-05 16:07:39,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 16:07:39,066 INFO L93 Difference]: Finished difference Result 112 states and 121 transitions. [2018-04-05 16:07:39,066 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-04-05 16:07:39,068 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2018-04-05 16:07:39,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 16:07:39,107 INFO L225 Difference]: With dead ends: 112 [2018-04-05 16:07:39,108 INFO L226 Difference]: Without dead ends: 75 [2018-04-05 16:07:39,122 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-04-05 16:07:39,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2018-04-05 16:07:39,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 75. [2018-04-05 16:07:39,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 75 states. [2018-04-05 16:07:39,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 75 states to 75 states and 79 transitions. [2018-04-05 16:07:39,208 INFO L78 Accepts]: Start accepts. Automaton has 75 states and 79 transitions. Word has length 21 [2018-04-05 16:07:39,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 16:07:39,209 INFO L459 AbstractCegarLoop]: Abstraction has 75 states and 79 transitions. [2018-04-05 16:07:39,209 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-04-05 16:07:39,209 INFO L276 IsEmpty]: Start isEmpty. Operand 75 states and 79 transitions. [2018-04-05 16:07:39,212 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-04-05 16:07:39,212 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 16:07:39,212 INFO L355 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] [2018-04-05 16:07:39,212 INFO L408 AbstractCegarLoop]: === Iteration 2 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr5RequiresViolation]=== [2018-04-05 16:07:39,213 INFO L82 PathProgramCache]: Analyzing trace with hash 289022876, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 16:07:39,233 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 16:07:39,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 16:07:39,312 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 16:07:39,418 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 16:07:39,420 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 16:07:39,436 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:07:39,437 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-04-05 16:07:39,558 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-04-05 16:07:39,559 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 16:07:39,596 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-04-05 16:07:39,597 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:11 [2018-04-05 16:07:39,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:07:39,641 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 16:07:39,698 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:07:39,752 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 16:07:39,752 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2018-04-05 16:07:39,754 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-04-05 16:07:39,755 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-04-05 16:07:39,755 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-04-05 16:07:39,755 INFO L87 Difference]: Start difference. First operand 75 states and 79 transitions. Second operand 4 states. [2018-04-05 16:07:40,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 16:07:40,050 INFO L93 Difference]: Finished difference Result 75 states and 79 transitions. [2018-04-05 16:07:40,051 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-04-05 16:07:40,051 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2018-04-05 16:07:40,051 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 16:07:40,053 INFO L225 Difference]: With dead ends: 75 [2018-04-05 16:07:40,053 INFO L226 Difference]: Without dead ends: 74 [2018-04-05 16:07:40,054 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 43 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-04-05 16:07:40,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2018-04-05 16:07:40,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2018-04-05 16:07:40,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2018-04-05 16:07:40,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 78 transitions. [2018-04-05 16:07:40,076 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 78 transitions. Word has length 24 [2018-04-05 16:07:40,076 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 16:07:40,077 INFO L459 AbstractCegarLoop]: Abstraction has 74 states and 78 transitions. [2018-04-05 16:07:40,077 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-04-05 16:07:40,077 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 78 transitions. [2018-04-05 16:07:40,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-04-05 16:07:40,082 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 16:07:40,083 INFO L355 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] [2018-04-05 16:07:40,083 INFO L408 AbstractCegarLoop]: === Iteration 3 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr5RequiresViolation]=== [2018-04-05 16:07:40,083 INFO L82 PathProgramCache]: Analyzing trace with hash 289022877, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 16:07:40,116 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 16:07:40,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 16:07:40,157 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 16:07:40,346 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 16:07:40,347 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 16:07:40,702 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 16:07:40,703 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 16:07:40,838 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:07:40,838 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:19, output treesize:17 [2018-04-05 16:07:41,052 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 16:07:41,070 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-05 16:07:41,071 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 16:07:41,272 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 16:07:41,297 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 16:07:41,298 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-04-05 16:07:41,299 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 16:07:41,370 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:07:41,371 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:28, output treesize:12 [2018-04-05 16:07:41,485 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:07:41,485 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 16:07:41,695 WARN L148 SmtUtils]: Spent 147ms on a formula simplification that was a NOOP. DAG size: 10 [2018-04-05 16:07:42,118 INFO L267 ElimStorePlain]: Start of recursive call 1: End of recursive call: and 1 xjuncts. [2018-04-05 16:07:42,121 INFO L202 ElimStorePlain]: Needed 1 recursive calls to eliminate 5 variables, input treesize:25, output treesize:3 [2018-04-05 16:07:42,163 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:07:42,251 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 16:07:42,251 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2018-04-05 16:07:42,252 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-04-05 16:07:42,252 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-04-05 16:07:42,252 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-04-05 16:07:42,253 INFO L87 Difference]: Start difference. First operand 74 states and 78 transitions. Second operand 9 states. [2018-04-05 16:07:42,681 WARN L148 SmtUtils]: Spent 147ms on a formula simplification that was a NOOP. DAG size: 21 [2018-04-05 16:07:42,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 16:07:42,991 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2018-04-05 16:07:42,992 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-04-05 16:07:42,992 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 24 [2018-04-05 16:07:42,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 16:07:42,994 INFO L225 Difference]: With dead ends: 74 [2018-04-05 16:07:42,994 INFO L226 Difference]: Without dead ends: 73 [2018-04-05 16:07:42,994 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2018-04-05 16:07:42,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-04-05 16:07:43,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2018-04-05 16:07:43,014 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2018-04-05 16:07:43,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 77 transitions. [2018-04-05 16:07:43,016 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 77 transitions. Word has length 24 [2018-04-05 16:07:43,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 16:07:43,019 INFO L459 AbstractCegarLoop]: Abstraction has 73 states and 77 transitions. [2018-04-05 16:07:43,019 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-04-05 16:07:43,019 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 77 transitions. [2018-04-05 16:07:43,020 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-04-05 16:07:43,020 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 16:07:43,020 INFO L355 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] [2018-04-05 16:07:43,021 INFO L408 AbstractCegarLoop]: === Iteration 4 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr5RequiresViolation]=== [2018-04-05 16:07:43,021 INFO L82 PathProgramCache]: Analyzing trace with hash 369774579, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 16:07:43,046 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 16:07:43,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 16:07:43,124 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 16:07:43,140 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 16:07:43,140 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 16:07:43,150 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:07:43,150 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-04-05 16:07:43,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:07:43,193 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 16:07:43,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:07:43,319 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 16:07:43,319 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2018-04-05 16:07:43,320 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-04-05 16:07:43,320 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-04-05 16:07:43,320 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-04-05 16:07:43,320 INFO L87 Difference]: Start difference. First operand 73 states and 77 transitions. Second operand 4 states. [2018-04-05 16:07:43,551 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 16:07:43,551 INFO L93 Difference]: Finished difference Result 73 states and 77 transitions. [2018-04-05 16:07:43,552 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-04-05 16:07:43,552 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2018-04-05 16:07:43,552 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 16:07:43,553 INFO L225 Difference]: With dead ends: 73 [2018-04-05 16:07:43,553 INFO L226 Difference]: Without dead ends: 72 [2018-04-05 16:07:43,554 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-04-05 16:07:43,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2018-04-05 16:07:43,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2018-04-05 16:07:43,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-04-05 16:07:43,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 76 transitions. [2018-04-05 16:07:43,570 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 76 transitions. Word has length 25 [2018-04-05 16:07:43,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 16:07:43,570 INFO L459 AbstractCegarLoop]: Abstraction has 72 states and 76 transitions. [2018-04-05 16:07:43,571 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-04-05 16:07:43,571 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 76 transitions. [2018-04-05 16:07:43,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-04-05 16:07:43,580 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 16:07:43,581 INFO L355 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] [2018-04-05 16:07:43,581 INFO L408 AbstractCegarLoop]: === Iteration 5 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr5RequiresViolation]=== [2018-04-05 16:07:43,581 INFO L82 PathProgramCache]: Analyzing trace with hash 369774580, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 16:07:43,608 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 16:07:43,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 16:07:43,661 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 16:07:43,740 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 16:07:43,740 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 16:07:43,779 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:07:43,779 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:16, output treesize:12 [2018-04-05 16:07:43,895 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:07:43,895 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 16:07:44,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:07:44,107 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 16:07:44,107 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2018-04-05 16:07:44,108 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-04-05 16:07:44,108 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-04-05 16:07:44,108 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2018-04-05 16:07:44,108 INFO L87 Difference]: Start difference. First operand 72 states and 76 transitions. Second operand 8 states. [2018-04-05 16:07:44,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 16:07:44,490 INFO L93 Difference]: Finished difference Result 72 states and 76 transitions. [2018-04-05 16:07:44,490 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-04-05 16:07:44,490 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2018-04-05 16:07:44,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 16:07:44,491 INFO L225 Difference]: With dead ends: 72 [2018-04-05 16:07:44,492 INFO L226 Difference]: Without dead ends: 71 [2018-04-05 16:07:44,492 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2018-04-05 16:07:44,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-04-05 16:07:44,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2018-04-05 16:07:44,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2018-04-05 16:07:44,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 75 transitions. [2018-04-05 16:07:44,525 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 75 transitions. Word has length 25 [2018-04-05 16:07:44,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 16:07:44,525 INFO L459 AbstractCegarLoop]: Abstraction has 71 states and 75 transitions. [2018-04-05 16:07:44,525 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-04-05 16:07:44,525 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 75 transitions. [2018-04-05 16:07:44,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-04-05 16:07:44,530 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 16:07:44,530 INFO L355 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] [2018-04-05 16:07:44,530 INFO L408 AbstractCegarLoop]: === Iteration 6 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr5RequiresViolation]=== [2018-04-05 16:07:44,531 INFO L82 PathProgramCache]: Analyzing trace with hash -941306668, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 16:07:44,560 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 16:07:44,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 16:07:44,618 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 16:07:44,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:07:44,691 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 16:07:44,724 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:07:44,803 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 16:07:44,803 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2018-04-05 16:07:44,804 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-04-05 16:07:44,804 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-04-05 16:07:44,804 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-04-05 16:07:44,804 INFO L87 Difference]: Start difference. First operand 71 states and 75 transitions. Second operand 5 states. [2018-04-05 16:07:45,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 16:07:45,071 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2018-04-05 16:07:45,072 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-04-05 16:07:45,072 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2018-04-05 16:07:45,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 16:07:45,073 INFO L225 Difference]: With dead ends: 74 [2018-04-05 16:07:45,073 INFO L226 Difference]: Without dead ends: 73 [2018-04-05 16:07:45,074 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-04-05 16:07:45,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2018-04-05 16:07:45,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 70. [2018-04-05 16:07:45,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2018-04-05 16:07:45,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2018-04-05 16:07:45,094 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 31 [2018-04-05 16:07:45,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 16:07:45,098 INFO L459 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2018-04-05 16:07:45,099 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-04-05 16:07:45,099 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2018-04-05 16:07:45,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2018-04-05 16:07:45,100 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 16:07:45,100 INFO L355 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] [2018-04-05 16:07:45,100 INFO L408 AbstractCegarLoop]: === Iteration 7 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr5RequiresViolation]=== [2018-04-05 16:07:45,100 INFO L82 PathProgramCache]: Analyzing trace with hash -941306667, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 16:07:45,127 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 16:07:45,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 16:07:45,184 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 16:07:45,212 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 16:07:45,212 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 16:07:45,248 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:07:45,248 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:9 [2018-04-05 16:07:45,432 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:07:45,432 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 16:07:45,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:07:45,943 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 16:07:45,943 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 11 [2018-04-05 16:07:45,944 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-04-05 16:07:45,944 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-04-05 16:07:45,944 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2018-04-05 16:07:45,945 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 12 states. [2018-04-05 16:07:46,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 16:07:46,934 INFO L93 Difference]: Finished difference Result 87 states and 93 transitions. [2018-04-05 16:07:46,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-04-05 16:07:46,934 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 31 [2018-04-05 16:07:46,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 16:07:46,936 INFO L225 Difference]: With dead ends: 87 [2018-04-05 16:07:46,936 INFO L226 Difference]: Without dead ends: 86 [2018-04-05 16:07:46,941 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2018-04-05 16:07:46,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2018-04-05 16:07:46,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 79. [2018-04-05 16:07:46,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2018-04-05 16:07:46,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 84 transitions. [2018-04-05 16:07:46,975 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 84 transitions. Word has length 31 [2018-04-05 16:07:46,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 16:07:46,976 INFO L459 AbstractCegarLoop]: Abstraction has 79 states and 84 transitions. [2018-04-05 16:07:46,976 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-04-05 16:07:46,976 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 84 transitions. [2018-04-05 16:07:46,986 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-04-05 16:07:46,987 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 16:07:46,987 INFO L355 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] [2018-04-05 16:07:46,987 INFO L408 AbstractCegarLoop]: === Iteration 8 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr5RequiresViolation]=== [2018-04-05 16:07:46,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1776158873, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 16:07:47,012 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 16:07:47,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 16:07:47,151 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 16:07:47,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:07:47,248 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 16:07:47,275 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:07:47,331 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 16:07:47,332 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2018-04-05 16:07:47,332 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-04-05 16:07:47,332 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-04-05 16:07:47,333 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-04-05 16:07:47,333 INFO L87 Difference]: Start difference. First operand 79 states and 84 transitions. Second operand 6 states. [2018-04-05 16:07:47,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 16:07:47,607 INFO L93 Difference]: Finished difference Result 79 states and 84 transitions. [2018-04-05 16:07:47,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-04-05 16:07:47,608 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2018-04-05 16:07:47,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 16:07:47,609 INFO L225 Difference]: With dead ends: 79 [2018-04-05 16:07:47,609 INFO L226 Difference]: Without dead ends: 78 [2018-04-05 16:07:47,610 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-04-05 16:07:47,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2018-04-05 16:07:47,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2018-04-05 16:07:47,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-04-05 16:07:47,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 83 transitions. [2018-04-05 16:07:47,634 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 83 transitions. Word has length 39 [2018-04-05 16:07:47,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 16:07:47,634 INFO L459 AbstractCegarLoop]: Abstraction has 78 states and 83 transitions. [2018-04-05 16:07:47,634 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-04-05 16:07:47,634 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 83 transitions. [2018-04-05 16:07:47,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2018-04-05 16:07:47,635 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 16:07:47,635 INFO L355 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] [2018-04-05 16:07:47,636 INFO L408 AbstractCegarLoop]: === Iteration 9 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr5RequiresViolation]=== [2018-04-05 16:07:47,636 INFO L82 PathProgramCache]: Analyzing trace with hash 1776158874, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 16:07:47,664 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 16:07:47,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 16:07:47,724 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 16:07:48,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:07:48,009 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 16:07:48,046 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2018-04-05 16:07:48,046 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 16:07:48,122 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 10 [2018-04-05 16:07:48,122 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 16:07:48,146 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-05 16:07:48,147 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:29, output treesize:7 [2018-04-05 16:07:48,220 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:07:48,272 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 16:07:48,272 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 8 [2018-04-05 16:07:48,273 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-04-05 16:07:48,273 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-04-05 16:07:48,273 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2018-04-05 16:07:48,273 INFO L87 Difference]: Start difference. First operand 78 states and 83 transitions. Second operand 9 states. [2018-04-05 16:07:48,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 16:07:48,912 INFO L93 Difference]: Finished difference Result 85 states and 90 transitions. [2018-04-05 16:07:48,912 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-04-05 16:07:48,913 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 39 [2018-04-05 16:07:48,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 16:07:48,914 INFO L225 Difference]: With dead ends: 85 [2018-04-05 16:07:48,914 INFO L226 Difference]: Without dead ends: 84 [2018-04-05 16:07:48,917 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 68 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2018-04-05 16:07:48,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2018-04-05 16:07:48,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2018-04-05 16:07:48,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2018-04-05 16:07:48,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 89 transitions. [2018-04-05 16:07:48,946 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 89 transitions. Word has length 39 [2018-04-05 16:07:48,946 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 16:07:48,946 INFO L459 AbstractCegarLoop]: Abstraction has 84 states and 89 transitions. [2018-04-05 16:07:48,946 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-04-05 16:07:48,946 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 89 transitions. [2018-04-05 16:07:48,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-04-05 16:07:48,948 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 16:07:48,948 INFO L355 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] [2018-04-05 16:07:48,948 INFO L408 AbstractCegarLoop]: === Iteration 10 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr5RequiresViolation]=== [2018-04-05 16:07:48,948 INFO L82 PathProgramCache]: Analyzing trace with hash -773649723, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 16:07:48,971 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 16:07:49,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 16:07:49,003 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 16:07:49,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:07:49,110 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 16:07:49,142 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:07:49,178 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 16:07:49,179 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2018-04-05 16:07:49,179 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-04-05 16:07:49,179 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-04-05 16:07:49,179 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2018-04-05 16:07:49,180 INFO L87 Difference]: Start difference. First operand 84 states and 89 transitions. Second operand 6 states. [2018-04-05 16:07:49,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 16:07:49,592 INFO L93 Difference]: Finished difference Result 84 states and 89 transitions. [2018-04-05 16:07:49,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-04-05 16:07:49,593 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 40 [2018-04-05 16:07:49,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 16:07:49,594 INFO L225 Difference]: With dead ends: 84 [2018-04-05 16:07:49,594 INFO L226 Difference]: Without dead ends: 83 [2018-04-05 16:07:49,595 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2018-04-05 16:07:49,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2018-04-05 16:07:49,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 83. [2018-04-05 16:07:49,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2018-04-05 16:07:49,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 88 transitions. [2018-04-05 16:07:49,624 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 88 transitions. Word has length 40 [2018-04-05 16:07:49,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 16:07:49,625 INFO L459 AbstractCegarLoop]: Abstraction has 83 states and 88 transitions. [2018-04-05 16:07:49,625 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-04-05 16:07:49,625 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 88 transitions. [2018-04-05 16:07:49,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-04-05 16:07:49,626 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 16:07:49,626 INFO L355 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] [2018-04-05 16:07:49,626 INFO L408 AbstractCegarLoop]: === Iteration 11 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr5RequiresViolation]=== [2018-04-05 16:07:49,627 INFO L82 PathProgramCache]: Analyzing trace with hash -773649722, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 16:07:49,659 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 16:07:49,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 16:07:49,735 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 16:07:49,784 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 16:07:49,784 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 16:07:49,823 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:07:49,823 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:9 [2018-04-05 16:07:50,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:07:50,347 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 16:07:51,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:07:51,162 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 16:07:51,163 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 15 [2018-04-05 16:07:51,163 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-04-05 16:07:51,163 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-04-05 16:07:51,164 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2018-04-05 16:07:51,164 INFO L87 Difference]: Start difference. First operand 83 states and 88 transitions. Second operand 16 states. [2018-04-05 16:07:53,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 16:07:53,519 INFO L93 Difference]: Finished difference Result 110 states and 117 transitions. [2018-04-05 16:07:53,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-04-05 16:07:53,520 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 40 [2018-04-05 16:07:53,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 16:07:53,523 INFO L225 Difference]: With dead ends: 110 [2018-04-05 16:07:53,524 INFO L226 Difference]: Without dead ends: 109 [2018-04-05 16:07:53,526 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 65 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=124, Invalid=526, Unknown=0, NotChecked=0, Total=650 [2018-04-05 16:07:53,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-04-05 16:07:53,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 102. [2018-04-05 16:07:53,537 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2018-04-05 16:07:53,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 109 transitions. [2018-04-05 16:07:53,550 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 109 transitions. Word has length 40 [2018-04-05 16:07:53,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 16:07:53,550 INFO L459 AbstractCegarLoop]: Abstraction has 102 states and 109 transitions. [2018-04-05 16:07:53,550 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-04-05 16:07:53,551 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 109 transitions. [2018-04-05 16:07:53,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2018-04-05 16:07:53,552 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 16:07:53,552 INFO L355 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 16:07:53,552 INFO L408 AbstractCegarLoop]: === Iteration 12 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr5RequiresViolation]=== [2018-04-05 16:07:53,552 INFO L82 PathProgramCache]: Analyzing trace with hash 1625754133, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 16:07:53,586 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 16:07:53,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 16:07:53,652 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 16:07:53,822 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 16:07:53,823 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 16:07:53,883 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:07:53,883 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:14 [2018-04-05 16:07:54,047 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-04-05 16:07:54,061 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-04-05 16:07:54,061 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 16:07:54,070 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:07:54,102 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-04-05 16:07:54,102 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:28, output treesize:24 [2018-04-05 16:07:54,321 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2018-04-05 16:07:54,358 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 11 [2018-04-05 16:07:54,359 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-04-05 16:07:54,382 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-05 16:07:54,451 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-04-05 16:07:54,451 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:37, output treesize:35 [2018-04-05 16:07:54,723 WARN L151 SmtUtils]: Spent 213ms on a formula simplification. DAG size of input: 17 DAG size of output 17 [2018-04-05 16:07:55,097 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:07:55,097 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 16:07:56,207 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2018-04-05 16:07:56,297 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2018-04-05 16:07:56,298 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 16:07:56,305 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:07:56,338 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-04-05 16:07:56,339 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:27, output treesize:38 [2018-04-05 16:07:56,773 WARN L148 SmtUtils]: Spent 106ms on a formula simplification that was a NOOP. DAG size: 17 [2018-04-05 16:07:57,049 WARN L151 SmtUtils]: Spent 164ms on a formula simplification. DAG size of input: 11 DAG size of output 10 [2018-04-05 16:07:57,361 WARN L148 SmtUtils]: Spent 132ms on a formula simplification that was a NOOP. DAG size: 11 [2018-04-05 16:07:57,437 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:07:57,491 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 16:07:57,491 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2018-04-05 16:07:57,492 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-04-05 16:07:57,492 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-04-05 16:07:57,492 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=531, Unknown=0, NotChecked=0, Total=600 [2018-04-05 16:07:57,493 INFO L87 Difference]: Start difference. First operand 102 states and 109 transitions. Second operand 25 states. [2018-04-05 16:07:59,528 WARN L151 SmtUtils]: Spent 258ms on a formula simplification. DAG size of input: 44 DAG size of output 41 [2018-04-05 16:08:00,675 WARN L151 SmtUtils]: Spent 143ms on a formula simplification. DAG size of input: 38 DAG size of output 36 [2018-04-05 16:08:01,360 WARN L151 SmtUtils]: Spent 162ms on a formula simplification. DAG size of input: 39 DAG size of output 36 [2018-04-05 16:08:02,544 WARN L151 SmtUtils]: Spent 113ms on a formula simplification. DAG size of input: 38 DAG size of output 34 [2018-04-05 16:08:02,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 16:08:02,607 INFO L93 Difference]: Finished difference Result 124 states and 133 transitions. [2018-04-05 16:08:02,608 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-04-05 16:08:02,608 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 45 [2018-04-05 16:08:02,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 16:08:02,609 INFO L225 Difference]: With dead ends: 124 [2018-04-05 16:08:02,609 INFO L226 Difference]: Without dead ends: 123 [2018-04-05 16:08:02,611 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 105 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 222 ImplicationChecksByTransitivity, 6.0s TimeCoverageRelationStatistics Valid=233, Invalid=1407, Unknown=0, NotChecked=0, Total=1640 [2018-04-05 16:08:02,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2018-04-05 16:08:02,630 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 109. [2018-04-05 16:08:02,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2018-04-05 16:08:02,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 117 transitions. [2018-04-05 16:08:02,644 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 117 transitions. Word has length 45 [2018-04-05 16:08:02,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 16:08:02,644 INFO L459 AbstractCegarLoop]: Abstraction has 109 states and 117 transitions. [2018-04-05 16:08:02,645 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-04-05 16:08:02,645 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 117 transitions. [2018-04-05 16:08:02,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2018-04-05 16:08:02,646 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 16:08:02,646 INFO L355 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 16:08:02,646 INFO L408 AbstractCegarLoop]: === Iteration 13 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr5RequiresViolation]=== [2018-04-05 16:08:02,646 INFO L82 PathProgramCache]: Analyzing trace with hash 1969495212, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 16:08:02,689 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 16:08:02,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 16:08:02,735 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 16:08:02,794 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 16:08:02,795 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 16:08:02,824 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:08:02,825 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-05 16:08:02,916 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 16:08:02,920 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 16:08:02,921 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-04-05 16:08:02,921 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 16:08:02,937 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:08:02,938 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:14, output treesize:8 [2018-04-05 16:08:03,041 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-04-05 16:08:03,044 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-04-05 16:08:03,045 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 16:08:03,050 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:08:03,088 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-04-05 16:08:03,088 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:29, output treesize:25 [2018-04-05 16:08:03,197 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 26 [2018-04-05 16:08:03,201 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-04-05 16:08:03,202 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 16:08:03,228 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:08:03,324 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2018-04-05 16:08:03,325 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:39, output treesize:35 [2018-04-05 16:08:04,025 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 28 [2018-04-05 16:08:04,068 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 13 [2018-04-05 16:08:04,111 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-04-05 16:08:04,167 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2018-04-05 16:08:04,168 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-04-05 16:08:04,202 INFO L267 ElimStorePlain]: Start of recursive call 2: 2 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-05 16:08:04,274 INFO L267 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-04-05 16:08:04,274 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 6 variables, input treesize:52, output treesize:29 [2018-04-05 16:08:04,509 WARN L151 SmtUtils]: Spent 140ms on a formula simplification. DAG size of input: 15 DAG size of output 15 [2018-04-05 16:08:04,730 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:08:04,730 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 16:08:06,078 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 12 [2018-04-05 16:08:06,078 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 16:08:06,174 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2018-04-05 16:08:06,238 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2018-04-05 16:08:06,238 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-04-05 16:08:06,246 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:08:06,279 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:08:06,279 INFO L202 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:35, output treesize:7 [2018-04-05 16:08:06,467 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:08:06,518 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 16:08:06,519 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 11] total 24 [2018-04-05 16:08:06,519 INFO L442 AbstractCegarLoop]: Interpolant automaton has 25 states [2018-04-05 16:08:06,519 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2018-04-05 16:08:06,520 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=528, Unknown=0, NotChecked=0, Total=600 [2018-04-05 16:08:06,520 INFO L87 Difference]: Start difference. First operand 109 states and 117 transitions. Second operand 25 states. [2018-04-05 16:08:08,119 WARN L151 SmtUtils]: Spent 171ms on a formula simplification. DAG size of input: 68 DAG size of output 57 [2018-04-05 16:08:08,349 WARN L151 SmtUtils]: Spent 110ms on a formula simplification. DAG size of input: 51 DAG size of output 47 [2018-04-05 16:08:08,635 WARN L151 SmtUtils]: Spent 200ms on a formula simplification. DAG size of input: 63 DAG size of output 54 [2018-04-05 16:08:09,114 WARN L151 SmtUtils]: Spent 346ms on a formula simplification. DAG size of input: 34 DAG size of output 31 [2018-04-05 16:08:09,434 WARN L151 SmtUtils]: Spent 138ms on a formula simplification. DAG size of input: 25 DAG size of output 24 [2018-04-05 16:08:09,718 WARN L151 SmtUtils]: Spent 202ms on a formula simplification. DAG size of input: 27 DAG size of output 26 [2018-04-05 16:08:11,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 16:08:11,422 INFO L93 Difference]: Finished difference Result 130 states and 140 transitions. [2018-04-05 16:08:11,422 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2018-04-05 16:08:11,422 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 50 [2018-04-05 16:08:11,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 16:08:11,424 INFO L225 Difference]: With dead ends: 130 [2018-04-05 16:08:11,424 INFO L226 Difference]: Without dead ends: 129 [2018-04-05 16:08:11,426 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 74 SyntacticMatches, 2 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 327 ImplicationChecksByTransitivity, 5.7s TimeCoverageRelationStatistics Valid=219, Invalid=1421, Unknown=0, NotChecked=0, Total=1640 [2018-04-05 16:08:11,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2018-04-05 16:08:11,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 120. [2018-04-05 16:08:11,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-04-05 16:08:11,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 128 transitions. [2018-04-05 16:08:11,444 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 128 transitions. Word has length 50 [2018-04-05 16:08:11,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 16:08:11,444 INFO L459 AbstractCegarLoop]: Abstraction has 120 states and 128 transitions. [2018-04-05 16:08:11,444 INFO L460 AbstractCegarLoop]: Interpolant automaton has 25 states. [2018-04-05 16:08:11,444 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 128 transitions. [2018-04-05 16:08:11,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2018-04-05 16:08:11,459 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 16:08:11,459 INFO L355 BasicCegarLoop]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 16:08:11,459 INFO L408 AbstractCegarLoop]: === Iteration 14 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr5RequiresViolation]=== [2018-04-05 16:08:11,460 INFO L82 PathProgramCache]: Analyzing trace with hash 4657691, now seen corresponding path program 2 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 16:08:11,479 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 16:08:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 16:08:11,527 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 16:08:11,640 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 16:08:11,640 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 16:08:11,683 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:08:11,684 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:14 [2018-04-05 16:08:11,832 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-04-05 16:08:11,848 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-04-05 16:08:11,849 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 16:08:11,863 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:08:11,933 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-04-05 16:08:11,933 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:28, output treesize:24 [2018-04-05 16:08:12,622 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2018-04-05 16:08:12,634 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 16:08:12,734 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 31 [2018-04-05 16:08:12,735 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-04-05 16:08:12,823 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-05 16:08:12,962 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-04-05 16:08:12,962 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:49, output treesize:49 [2018-04-05 16:08:13,270 WARN L151 SmtUtils]: Spent 225ms on a formula simplification. DAG size of input: 20 DAG size of output 19 [2018-04-05 16:08:13,641 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:08:13,642 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 16:08:14,616 WARN L148 SmtUtils]: Spent 107ms on a formula simplification that was a NOOP. DAG size: 15 [2018-04-05 16:08:16,150 WARN L151 SmtUtils]: Spent 222ms on a formula simplification. DAG size of input: 22 DAG size of output 18 [2018-04-05 16:08:16,607 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2018-04-05 16:08:16,726 WARN L151 SmtUtils]: Spent 117ms on a formula simplification. DAG size of input: 21 DAG size of output 17 [2018-04-05 16:08:16,734 INFO L682 Elim1Store]: detected equality via solver [2018-04-05 16:08:16,743 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 12 [2018-04-05 16:08:16,743 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 16:08:16,770 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:08:16,819 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-04-05 16:08:16,820 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:42, output treesize:54 [2018-04-05 16:08:17,212 WARN L151 SmtUtils]: Spent 241ms on a formula simplification. DAG size of input: 23 DAG size of output 17 [2018-04-05 16:08:17,813 WARN L151 SmtUtils]: Spent 179ms on a formula simplification. DAG size of input: 11 DAG size of output 10 [2018-04-05 16:08:18,084 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:08:18,147 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 16:08:18,147 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 30 [2018-04-05 16:08:18,147 INFO L442 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-04-05 16:08:18,148 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-04-05 16:08:18,148 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=827, Unknown=0, NotChecked=0, Total=930 [2018-04-05 16:08:18,148 INFO L87 Difference]: Start difference. First operand 120 states and 128 transitions. Second operand 31 states. [2018-04-05 16:08:18,531 WARN L151 SmtUtils]: Spent 101ms on a formula simplification. DAG size of input: 14 DAG size of output 11 [2018-04-05 16:08:19,459 WARN L148 SmtUtils]: Spent 108ms on a formula simplification that was a NOOP. DAG size: 29 [2018-04-05 16:08:20,945 WARN L151 SmtUtils]: Spent 215ms on a formula simplification. DAG size of input: 47 DAG size of output 33 [2018-04-05 16:08:21,817 WARN L148 SmtUtils]: Spent 101ms on a formula simplification that was a NOOP. DAG size: 38 [2018-04-05 16:08:22,819 WARN L151 SmtUtils]: Spent 622ms on a formula simplification. DAG size of input: 59 DAG size of output 51 [2018-04-05 16:08:23,610 WARN L151 SmtUtils]: Spent 230ms on a formula simplification. DAG size of input: 51 DAG size of output 48 [2018-04-05 16:08:24,119 WARN L151 SmtUtils]: Spent 156ms on a formula simplification. DAG size of input: 39 DAG size of output 37 [2018-04-05 16:08:24,448 WARN L148 SmtUtils]: Spent 120ms on a formula simplification that was a NOOP. DAG size: 42 [2018-04-05 16:08:24,932 WARN L151 SmtUtils]: Spent 330ms on a formula simplification. DAG size of input: 51 DAG size of output 49 [2018-04-05 16:08:26,221 WARN L151 SmtUtils]: Spent 235ms on a formula simplification. DAG size of input: 50 DAG size of output 44 [2018-04-05 16:08:27,021 WARN L151 SmtUtils]: Spent 203ms on a formula simplification. DAG size of input: 47 DAG size of output 41 [2018-04-05 16:08:27,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 16:08:27,158 INFO L93 Difference]: Finished difference Result 148 states and 159 transitions. [2018-04-05 16:08:27,159 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-04-05 16:08:27,159 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 52 [2018-04-05 16:08:27,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 16:08:27,161 INFO L225 Difference]: With dead ends: 148 [2018-04-05 16:08:27,161 INFO L226 Difference]: Without dead ends: 147 [2018-04-05 16:08:27,163 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 125 GetRequests, 73 SyntacticMatches, 1 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 458 ImplicationChecksByTransitivity, 11.3s TimeCoverageRelationStatistics Valid=368, Invalid=2388, Unknown=0, NotChecked=0, Total=2756 [2018-04-05 16:08:27,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2018-04-05 16:08:27,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 134. [2018-04-05 16:08:27,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 134 states. [2018-04-05 16:08:27,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 134 states to 134 states and 144 transitions. [2018-04-05 16:08:27,198 INFO L78 Accepts]: Start accepts. Automaton has 134 states and 144 transitions. Word has length 52 [2018-04-05 16:08:27,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 16:08:27,198 INFO L459 AbstractCegarLoop]: Abstraction has 134 states and 144 transitions. [2018-04-05 16:08:27,198 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-04-05 16:08:27,198 INFO L276 IsEmpty]: Start isEmpty. Operand 134 states and 144 transitions. [2018-04-05 16:08:27,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2018-04-05 16:08:27,199 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 16:08:27,199 INFO L355 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] [2018-04-05 16:08:27,200 INFO L408 AbstractCegarLoop]: === Iteration 15 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr5RequiresViolation]=== [2018-04-05 16:08:27,200 INFO L82 PathProgramCache]: Analyzing trace with hash -953565311, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 16:08:27,227 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 16:08:27,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 16:08:27,261 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 16:08:27,437 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 16:08:27,438 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2018-04-05 16:08:27,443 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2018-04-05 16:08:27,443 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 16:08:27,477 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:08:27,505 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-04-05 16:08:27,506 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2018-04-05 16:08:27,659 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc10.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc10.base| 1))) (and (= 0 (select |c_old(#valid)| |main_#t~malloc10.base|)) (= (select .cse0 |c_main_#t~malloc11.base|) 0) (= |c_#valid| (store (store .cse0 |c_main_#t~malloc11.base| 1) |main_#t~malloc10.base| 0))))) is different from true [2018-04-05 16:08:27,668 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc11.base| Int) (|main_#t~malloc10.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc10.base| 1))) (and (= 0 (select |c_old(#valid)| |main_#t~malloc10.base|)) (= (store (store (store .cse0 |main_#t~malloc11.base| 1) |main_#t~malloc10.base| 0) |main_#t~malloc11.base| 0) |c_#valid|) (= (select .cse0 |main_#t~malloc11.base|) 0)))) is different from true [2018-04-05 16:08:27,679 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:08:27,679 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 16:08:27,816 WARN L1011 $PredicateComparison]: unable to prove that (forall ((|v_main_#t~malloc11.base_16| Int)) (or (not (= 0 (select |c_#valid| |v_main_#t~malloc11.base_16|))) (= (store (store (store |c_#valid| |v_main_#t~malloc11.base_16| 1) |c_main_#t~malloc10.base| 0) |v_main_#t~malloc11.base_16| 0) |c_old(#valid)|))) is different from false [2018-04-05 16:08:27,843 WARN L1011 $PredicateComparison]: unable to prove that (forall ((|v_main_#t~malloc10.base_15| Int) (|v_main_#t~malloc11.base_16| Int)) (let ((.cse0 (store |c_#valid| |v_main_#t~malloc10.base_15| 1))) (or (not (= (select .cse0 |v_main_#t~malloc11.base_16|) 0)) (= |c_old(#valid)| (store (store (store .cse0 |v_main_#t~malloc11.base_16| 1) |v_main_#t~malloc10.base_15| 0) |v_main_#t~malloc11.base_16| 0)) (not (= (select |c_#valid| |v_main_#t~malloc10.base_15|) 0))))) is different from false [2018-04-05 16:08:27,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:08:28,003 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 16:08:28,003 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2018-04-05 16:08:28,003 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-04-05 16:08:28,004 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-04-05 16:08:28,004 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=45, Unknown=4, NotChecked=60, Total=132 [2018-04-05 16:08:28,004 INFO L87 Difference]: Start difference. First operand 134 states and 144 transitions. Second operand 12 states. [2018-04-05 16:08:28,133 WARN L1011 $PredicateComparison]: unable to prove that (and (forall ((|v_main_#t~malloc10.base_15| Int) (|v_main_#t~malloc11.base_16| Int)) (let ((.cse0 (store |c_#valid| |v_main_#t~malloc10.base_15| 1))) (or (not (= (select .cse0 |v_main_#t~malloc11.base_16|) 0)) (= |c_old(#valid)| (store (store (store .cse0 |v_main_#t~malloc11.base_16| 1) |v_main_#t~malloc10.base_15| 0) |v_main_#t~malloc11.base_16| 0)) (not (= (select |c_#valid| |v_main_#t~malloc10.base_15|) 0))))) (= |c_#valid| |c_old(#valid)|)) is different from false [2018-04-05 16:08:30,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 16:08:30,222 INFO L93 Difference]: Finished difference Result 249 states and 268 transitions. [2018-04-05 16:08:30,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-04-05 16:08:30,224 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 54 [2018-04-05 16:08:30,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 16:08:30,226 INFO L225 Difference]: With dead ends: 249 [2018-04-05 16:08:30,226 INFO L226 Difference]: Without dead ends: 235 [2018-04-05 16:08:30,227 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 97 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=45, Invalid=125, Unknown=6, NotChecked=130, Total=306 [2018-04-05 16:08:30,227 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-04-05 16:08:30,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 232. [2018-04-05 16:08:30,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2018-04-05 16:08:30,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 252 transitions. [2018-04-05 16:08:30,329 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 252 transitions. Word has length 54 [2018-04-05 16:08:30,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 16:08:30,330 INFO L459 AbstractCegarLoop]: Abstraction has 232 states and 252 transitions. [2018-04-05 16:08:30,330 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-04-05 16:08:30,330 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 252 transitions. [2018-04-05 16:08:30,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-04-05 16:08:30,331 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 16:08:30,331 INFO L355 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] [2018-04-05 16:08:30,331 INFO L408 AbstractCegarLoop]: === Iteration 16 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr5RequiresViolation]=== [2018-04-05 16:08:30,331 INFO L82 PathProgramCache]: Analyzing trace with hash 61705302, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 16:08:30,380 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 16:08:30,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 16:08:30,417 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 16:08:30,790 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 16:08:30,792 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 21 [2018-04-05 16:08:30,830 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 16:08:30,831 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 21 [2018-04-05 16:08:30,831 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 16:08:30,931 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:08:30,983 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-04-05 16:08:30,983 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2018-04-05 16:08:31,213 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc10.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc10.base| 1))) (and (= 0 (select |c_old(#valid)| |main_#t~malloc10.base|)) (= (select .cse0 |c_main_#t~malloc11.base|) 0) (= |c_#valid| (store (store .cse0 |c_main_#t~malloc11.base| 1) |main_#t~malloc10.base| 0))))) is different from true [2018-04-05 16:08:31,240 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc11.base| Int) (|main_#t~malloc10.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc10.base| 1))) (and (= 0 (select |c_old(#valid)| |main_#t~malloc10.base|)) (= (store (store (store .cse0 |main_#t~malloc11.base| 1) |main_#t~malloc10.base| 0) |main_#t~malloc11.base| 0) |c_#valid|) (= (select .cse0 |main_#t~malloc11.base|) 0)))) is different from true [2018-04-05 16:08:31,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:08:31,257 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 16:08:31,565 WARN L1011 $PredicateComparison]: unable to prove that (forall ((|v_main_#t~malloc11.base_18| Int)) (or (= (store (store (store |c_#valid| |v_main_#t~malloc11.base_18| 1) |c_main_#t~malloc10.base| 0) |v_main_#t~malloc11.base_18| 0) |c_old(#valid)|) (not (= 0 (select |c_#valid| |v_main_#t~malloc11.base_18|))))) is different from false [2018-04-05 16:08:31,581 WARN L1011 $PredicateComparison]: unable to prove that (forall ((|v_main_#t~malloc10.base_17| Int) (|v_main_#t~malloc11.base_18| Int)) (let ((.cse0 (store |c_#valid| |v_main_#t~malloc10.base_17| 1))) (or (= |c_old(#valid)| (store (store (store .cse0 |v_main_#t~malloc11.base_18| 1) |v_main_#t~malloc10.base_17| 0) |v_main_#t~malloc11.base_18| 0)) (not (= 0 (select .cse0 |v_main_#t~malloc11.base_18|))) (not (= (select |c_#valid| |v_main_#t~malloc10.base_17|) 0))))) is different from false [2018-04-05 16:08:31,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:08:31,723 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 16:08:31,723 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2018-04-05 16:08:31,724 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-04-05 16:08:31,724 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-04-05 16:08:31,724 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=45, Unknown=4, NotChecked=60, Total=132 [2018-04-05 16:08:31,724 INFO L87 Difference]: Start difference. First operand 232 states and 252 transitions. Second operand 12 states. [2018-04-05 16:08:31,817 WARN L1011 $PredicateComparison]: unable to prove that (and (= |c_#valid| |c_old(#valid)|) (forall ((|v_main_#t~malloc10.base_17| Int) (|v_main_#t~malloc11.base_18| Int)) (let ((.cse0 (store |c_#valid| |v_main_#t~malloc10.base_17| 1))) (or (= |c_old(#valid)| (store (store (store .cse0 |v_main_#t~malloc11.base_18| 1) |v_main_#t~malloc10.base_17| 0) |v_main_#t~malloc11.base_18| 0)) (not (= 0 (select .cse0 |v_main_#t~malloc11.base_18|))) (not (= (select |c_#valid| |v_main_#t~malloc10.base_17|) 0)))))) is different from false [2018-04-05 16:08:33,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 16:08:33,464 INFO L93 Difference]: Finished difference Result 347 states and 375 transitions. [2018-04-05 16:08:33,465 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-04-05 16:08:33,465 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 55 [2018-04-05 16:08:33,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 16:08:33,467 INFO L225 Difference]: With dead ends: 347 [2018-04-05 16:08:33,467 INFO L226 Difference]: Without dead ends: 333 [2018-04-05 16:08:33,478 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 99 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=45, Invalid=125, Unknown=6, NotChecked=130, Total=306 [2018-04-05 16:08:33,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-04-05 16:08:33,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 233. [2018-04-05 16:08:33,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-04-05 16:08:33,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 253 transitions. [2018-04-05 16:08:33,531 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 253 transitions. Word has length 55 [2018-04-05 16:08:33,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 16:08:33,532 INFO L459 AbstractCegarLoop]: Abstraction has 233 states and 253 transitions. [2018-04-05 16:08:33,532 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-04-05 16:08:33,532 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 253 transitions. [2018-04-05 16:08:33,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-04-05 16:08:33,533 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 16:08:33,533 INFO L355 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] [2018-04-05 16:08:33,533 INFO L408 AbstractCegarLoop]: === Iteration 17 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr5RequiresViolation]=== [2018-04-05 16:08:33,533 INFO L82 PathProgramCache]: Analyzing trace with hash 2135979729, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 16:08:33,551 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 16:08:33,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 16:08:33,577 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 16:08:33,824 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 16:08:33,825 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2018-04-05 16:08:33,850 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2018-04-05 16:08:33,850 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 16:08:33,892 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:08:33,927 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-04-05 16:08:33,928 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2018-04-05 16:08:34,080 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc10.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc10.base| 1))) (and (= 0 (select |c_old(#valid)| |main_#t~malloc10.base|)) (= (select .cse0 |c_main_#t~malloc11.base|) 0) (= |c_#valid| (store (store .cse0 |c_main_#t~malloc11.base| 1) |main_#t~malloc10.base| 0))))) is different from true [2018-04-05 16:08:34,090 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc11.base| Int) (|main_#t~malloc10.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc10.base| 1))) (and (= 0 (select |c_old(#valid)| |main_#t~malloc10.base|)) (= (store (store (store .cse0 |main_#t~malloc11.base| 1) |main_#t~malloc10.base| 0) |main_#t~malloc11.base| 0) |c_#valid|) (= (select .cse0 |main_#t~malloc11.base|) 0)))) is different from true [2018-04-05 16:08:34,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:08:34,104 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 16:08:34,217 WARN L1011 $PredicateComparison]: unable to prove that (forall ((|v_main_#t~malloc11.base_20| Int)) (or (= (store (store (store |c_#valid| |v_main_#t~malloc11.base_20| 1) |c_main_#t~malloc10.base| 0) |v_main_#t~malloc11.base_20| 0) |c_old(#valid)|) (not (= 0 (select |c_#valid| |v_main_#t~malloc11.base_20|))))) is different from false [2018-04-05 16:08:34,227 WARN L1011 $PredicateComparison]: unable to prove that (forall ((|v_main_#t~malloc11.base_20| Int) (|v_main_#t~malloc10.base_19| Int)) (let ((.cse0 (store |c_#valid| |v_main_#t~malloc10.base_19| 1))) (or (not (= (select .cse0 |v_main_#t~malloc11.base_20|) 0)) (= (store (store (store .cse0 |v_main_#t~malloc11.base_20| 1) |v_main_#t~malloc10.base_19| 0) |v_main_#t~malloc11.base_20| 0) |c_old(#valid)|) (not (= 0 (select |c_#valid| |v_main_#t~malloc10.base_19|)))))) is different from false [2018-04-05 16:08:34,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:08:34,368 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 16:08:34,368 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2018-04-05 16:08:34,368 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-04-05 16:08:34,369 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-04-05 16:08:34,369 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=45, Unknown=4, NotChecked=60, Total=132 [2018-04-05 16:08:34,369 INFO L87 Difference]: Start difference. First operand 233 states and 253 transitions. Second operand 12 states. [2018-04-05 16:08:34,440 WARN L1011 $PredicateComparison]: unable to prove that (and (= |c_#valid| |c_old(#valid)|) (forall ((|v_main_#t~malloc11.base_20| Int) (|v_main_#t~malloc10.base_19| Int)) (let ((.cse0 (store |c_#valid| |v_main_#t~malloc10.base_19| 1))) (or (not (= (select .cse0 |v_main_#t~malloc11.base_20|) 0)) (= (store (store (store .cse0 |v_main_#t~malloc11.base_20| 1) |v_main_#t~malloc10.base_19| 0) |v_main_#t~malloc11.base_20| 0) |c_old(#valid)|) (not (= 0 (select |c_#valid| |v_main_#t~malloc10.base_19|))))))) is different from false [2018-04-05 16:08:36,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 16:08:36,373 INFO L93 Difference]: Finished difference Result 348 states and 376 transitions. [2018-04-05 16:08:36,374 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-04-05 16:08:36,374 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 55 [2018-04-05 16:08:36,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 16:08:36,376 INFO L225 Difference]: With dead ends: 348 [2018-04-05 16:08:36,376 INFO L226 Difference]: Without dead ends: 334 [2018-04-05 16:08:36,385 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 99 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=45, Invalid=125, Unknown=6, NotChecked=130, Total=306 [2018-04-05 16:08:36,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2018-04-05 16:08:36,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 235. [2018-04-05 16:08:36,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-04-05 16:08:36,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 256 transitions. [2018-04-05 16:08:36,463 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 256 transitions. Word has length 55 [2018-04-05 16:08:36,463 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 16:08:36,463 INFO L459 AbstractCegarLoop]: Abstraction has 235 states and 256 transitions. [2018-04-05 16:08:36,463 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-04-05 16:08:36,463 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 256 transitions. [2018-04-05 16:08:36,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2018-04-05 16:08:36,476 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 16:08:36,476 INFO L355 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] [2018-04-05 16:08:36,476 INFO L408 AbstractCegarLoop]: === Iteration 18 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr5RequiresViolation]=== [2018-04-05 16:08:36,476 INFO L82 PathProgramCache]: Analyzing trace with hash 183707505, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 16:08:36,509 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 16:08:36,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 16:08:36,561 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 16:08:36,829 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 16:08:36,830 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 21 [2018-04-05 16:08:36,864 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 16:08:36,865 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 21 [2018-04-05 16:08:36,866 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 16:08:36,940 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:08:37,015 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-04-05 16:08:37,016 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2018-04-05 16:08:37,191 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc10.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc10.base| 1))) (and (= 0 (select |c_old(#valid)| |main_#t~malloc10.base|)) (= (select .cse0 |c_main_#t~malloc11.base|) 0) (= |c_#valid| (store (store .cse0 |c_main_#t~malloc11.base| 1) |main_#t~malloc10.base| 0))))) is different from true [2018-04-05 16:08:37,230 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc11.base| Int) (|main_#t~malloc10.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc10.base| 1))) (and (= 0 (select |c_old(#valid)| |main_#t~malloc10.base|)) (= (store (store (store .cse0 |main_#t~malloc11.base| 1) |main_#t~malloc10.base| 0) |main_#t~malloc11.base| 0) |c_#valid|) (= (select .cse0 |main_#t~malloc11.base|) 0)))) is different from true [2018-04-05 16:08:37,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:08:37,250 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 16:08:37,516 WARN L1011 $PredicateComparison]: unable to prove that (forall ((|v_main_#t~malloc11.base_22| Int)) (or (not (= 0 (select |c_#valid| |v_main_#t~malloc11.base_22|))) (= (store (store (store |c_#valid| |v_main_#t~malloc11.base_22| 1) |c_main_#t~malloc10.base| 0) |v_main_#t~malloc11.base_22| 0) |c_old(#valid)|))) is different from false [2018-04-05 16:08:37,541 WARN L1011 $PredicateComparison]: unable to prove that (forall ((|v_main_#t~malloc10.base_21| Int) (|v_main_#t~malloc11.base_22| Int)) (let ((.cse0 (store |c_#valid| |v_main_#t~malloc10.base_21| 1))) (or (= (store (store (store .cse0 |v_main_#t~malloc11.base_22| 1) |v_main_#t~malloc10.base_21| 0) |v_main_#t~malloc11.base_22| 0) |c_old(#valid)|) (not (= (select .cse0 |v_main_#t~malloc11.base_22|) 0)) (not (= (select |c_#valid| |v_main_#t~malloc10.base_21|) 0))))) is different from false [2018-04-05 16:08:37,636 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:08:37,692 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 16:08:37,692 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2018-04-05 16:08:37,692 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-04-05 16:08:37,693 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-04-05 16:08:37,693 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=45, Unknown=4, NotChecked=60, Total=132 [2018-04-05 16:08:37,693 INFO L87 Difference]: Start difference. First operand 235 states and 256 transitions. Second operand 12 states. [2018-04-05 16:08:37,804 WARN L1011 $PredicateComparison]: unable to prove that (and (forall ((|v_main_#t~malloc10.base_21| Int) (|v_main_#t~malloc11.base_22| Int)) (let ((.cse0 (store |c_#valid| |v_main_#t~malloc10.base_21| 1))) (or (= (store (store (store .cse0 |v_main_#t~malloc11.base_22| 1) |v_main_#t~malloc10.base_21| 0) |v_main_#t~malloc11.base_22| 0) |c_old(#valid)|) (not (= (select .cse0 |v_main_#t~malloc11.base_22|) 0)) (not (= (select |c_#valid| |v_main_#t~malloc10.base_21|) 0))))) (= |c_#valid| |c_old(#valid)|)) is different from false [2018-04-05 16:08:39,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 16:08:39,499 INFO L93 Difference]: Finished difference Result 349 states and 378 transitions. [2018-04-05 16:08:39,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-04-05 16:08:39,500 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 55 [2018-04-05 16:08:39,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 16:08:39,502 INFO L225 Difference]: With dead ends: 349 [2018-04-05 16:08:39,502 INFO L226 Difference]: Without dead ends: 335 [2018-04-05 16:08:39,509 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 99 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=45, Invalid=125, Unknown=6, NotChecked=130, Total=306 [2018-04-05 16:08:39,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2018-04-05 16:08:39,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 235. [2018-04-05 16:08:39,558 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-04-05 16:08:39,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 256 transitions. [2018-04-05 16:08:39,563 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 256 transitions. Word has length 55 [2018-04-05 16:08:39,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 16:08:39,564 INFO L459 AbstractCegarLoop]: Abstraction has 235 states and 256 transitions. [2018-04-05 16:08:39,564 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-04-05 16:08:39,564 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 256 transitions. [2018-04-05 16:08:39,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-04-05 16:08:39,565 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 16:08:39,565 INFO L355 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] [2018-04-05 16:08:39,565 INFO L408 AbstractCegarLoop]: === Iteration 19 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr5RequiresViolation]=== [2018-04-05 16:08:39,565 INFO L82 PathProgramCache]: Analyzing trace with hash -750369636, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 16:08:39,587 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 16:08:39,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 16:08:39,639 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 16:08:39,804 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 16:08:39,805 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2018-04-05 16:08:39,812 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2018-04-05 16:08:39,812 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 16:08:39,841 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:08:39,868 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-04-05 16:08:39,869 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2018-04-05 16:08:39,990 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc10.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc10.base| 1))) (and (= 0 (select |c_old(#valid)| |main_#t~malloc10.base|)) (= (select .cse0 |c_main_#t~malloc11.base|) 0) (= |c_#valid| (store (store .cse0 |c_main_#t~malloc11.base| 1) |main_#t~malloc10.base| 0))))) is different from true [2018-04-05 16:08:40,002 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc11.base| Int) (|main_#t~malloc10.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc10.base| 1))) (and (= 0 (select |c_old(#valid)| |main_#t~malloc10.base|)) (= (store (store (store .cse0 |main_#t~malloc11.base| 1) |main_#t~malloc10.base| 0) |main_#t~malloc11.base| 0) |c_#valid|) (= (select .cse0 |main_#t~malloc11.base|) 0)))) is different from true [2018-04-05 16:08:40,013 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:08:40,013 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 16:08:40,121 WARN L1011 $PredicateComparison]: unable to prove that (forall ((|v_main_#t~malloc11.base_24| Int)) (or (= (store (store (store |c_#valid| |v_main_#t~malloc11.base_24| 1) |c_main_#t~malloc10.base| 0) |v_main_#t~malloc11.base_24| 0) |c_old(#valid)|) (not (= 0 (select |c_#valid| |v_main_#t~malloc11.base_24|))))) is different from false [2018-04-05 16:08:40,127 WARN L1011 $PredicateComparison]: unable to prove that (forall ((|v_main_#t~malloc10.base_23| Int) (|v_main_#t~malloc11.base_24| Int)) (let ((.cse0 (store |c_#valid| |v_main_#t~malloc10.base_23| 1))) (or (not (= 0 (select .cse0 |v_main_#t~malloc11.base_24|))) (not (= (select |c_#valid| |v_main_#t~malloc10.base_23|) 0)) (= (store (store (store .cse0 |v_main_#t~malloc11.base_24| 1) |v_main_#t~malloc10.base_23| 0) |v_main_#t~malloc11.base_24| 0) |c_old(#valid)|)))) is different from false [2018-04-05 16:08:40,187 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:08:40,233 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 16:08:40,233 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2018-04-05 16:08:40,234 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-04-05 16:08:40,234 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-04-05 16:08:40,234 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=45, Unknown=4, NotChecked=60, Total=132 [2018-04-05 16:08:40,234 INFO L87 Difference]: Start difference. First operand 235 states and 256 transitions. Second operand 12 states. [2018-04-05 16:08:40,335 WARN L1011 $PredicateComparison]: unable to prove that (and (forall ((|v_main_#t~malloc10.base_23| Int) (|v_main_#t~malloc11.base_24| Int)) (let ((.cse0 (store |c_#valid| |v_main_#t~malloc10.base_23| 1))) (or (not (= 0 (select .cse0 |v_main_#t~malloc11.base_24|))) (not (= (select |c_#valid| |v_main_#t~malloc10.base_23|) 0)) (= (store (store (store .cse0 |v_main_#t~malloc11.base_24| 1) |v_main_#t~malloc10.base_23| 0) |v_main_#t~malloc11.base_24| 0) |c_old(#valid)|)))) (= |c_#valid| |c_old(#valid)|)) is different from false [2018-04-05 16:08:42,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 16:08:42,225 INFO L93 Difference]: Finished difference Result 350 states and 379 transitions. [2018-04-05 16:08:42,227 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-04-05 16:08:42,227 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 56 [2018-04-05 16:08:42,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 16:08:42,229 INFO L225 Difference]: With dead ends: 350 [2018-04-05 16:08:42,230 INFO L226 Difference]: Without dead ends: 336 [2018-04-05 16:08:42,230 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 101 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=45, Invalid=125, Unknown=6, NotChecked=130, Total=306 [2018-04-05 16:08:42,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2018-04-05 16:08:42,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 235. [2018-04-05 16:08:42,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2018-04-05 16:08:42,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 256 transitions. [2018-04-05 16:08:42,314 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 256 transitions. Word has length 56 [2018-04-05 16:08:42,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 16:08:42,314 INFO L459 AbstractCegarLoop]: Abstraction has 235 states and 256 transitions. [2018-04-05 16:08:42,314 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-04-05 16:08:42,314 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 256 transitions. [2018-04-05 16:08:42,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-04-05 16:08:42,315 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 16:08:42,316 INFO L355 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] [2018-04-05 16:08:42,323 INFO L408 AbstractCegarLoop]: === Iteration 20 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr5RequiresViolation]=== [2018-04-05 16:08:42,323 INFO L82 PathProgramCache]: Analyzing trace with hash 957424230, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 16:08:42,353 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 16:08:42,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 16:08:42,387 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 16:08:42,544 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 16:08:42,545 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2018-04-05 16:08:42,557 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2018-04-05 16:08:42,557 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 16:08:42,587 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:08:42,618 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-04-05 16:08:42,619 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2018-04-05 16:08:42,754 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc10.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc10.base| 1))) (and (= 0 (select |c_old(#valid)| |main_#t~malloc10.base|)) (= (select .cse0 |c_main_#t~malloc11.base|) 0) (= |c_#valid| (store (store .cse0 |c_main_#t~malloc11.base| 1) |main_#t~malloc10.base| 0))))) is different from true [2018-04-05 16:08:42,767 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc11.base| Int) (|main_#t~malloc10.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc10.base| 1))) (and (= 0 (select |c_old(#valid)| |main_#t~malloc10.base|)) (= (store (store (store .cse0 |main_#t~malloc11.base| 1) |main_#t~malloc10.base| 0) |main_#t~malloc11.base| 0) |c_#valid|) (= (select .cse0 |main_#t~malloc11.base|) 0)))) is different from true [2018-04-05 16:08:42,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:08:42,778 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 16:08:42,903 WARN L1011 $PredicateComparison]: unable to prove that (forall ((|v_main_#t~malloc11.base_26| Int)) (or (not (= 0 (select |c_#valid| |v_main_#t~malloc11.base_26|))) (= (store (store (store |c_#valid| |v_main_#t~malloc11.base_26| 1) |c_main_#t~malloc10.base| 0) |v_main_#t~malloc11.base_26| 0) |c_old(#valid)|))) is different from false [2018-04-05 16:08:42,922 WARN L1011 $PredicateComparison]: unable to prove that (forall ((|v_main_#t~malloc10.base_25| Int) (|v_main_#t~malloc11.base_26| Int)) (let ((.cse0 (store |c_#valid| |v_main_#t~malloc10.base_25| 1))) (or (not (= (select |c_#valid| |v_main_#t~malloc10.base_25|) 0)) (not (= (select .cse0 |v_main_#t~malloc11.base_26|) 0)) (= |c_old(#valid)| (store (store (store .cse0 |v_main_#t~malloc11.base_26| 1) |v_main_#t~malloc10.base_25| 0) |v_main_#t~malloc11.base_26| 0))))) is different from false [2018-04-05 16:08:42,992 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:08:43,028 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 16:08:43,028 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2018-04-05 16:08:43,028 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-04-05 16:08:43,029 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-04-05 16:08:43,029 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=45, Unknown=4, NotChecked=60, Total=132 [2018-04-05 16:08:43,029 INFO L87 Difference]: Start difference. First operand 235 states and 256 transitions. Second operand 12 states. [2018-04-05 16:08:43,194 WARN L1011 $PredicateComparison]: unable to prove that (and (forall ((|v_main_#t~malloc10.base_25| Int) (|v_main_#t~malloc11.base_26| Int)) (let ((.cse0 (store |c_#valid| |v_main_#t~malloc10.base_25| 1))) (or (not (= (select |c_#valid| |v_main_#t~malloc10.base_25|) 0)) (not (= (select .cse0 |v_main_#t~malloc11.base_26|) 0)) (= |c_old(#valid)| (store (store (store .cse0 |v_main_#t~malloc11.base_26| 1) |v_main_#t~malloc10.base_25| 0) |v_main_#t~malloc11.base_26| 0))))) (= |c_#valid| |c_old(#valid)|)) is different from false [2018-04-05 16:08:45,633 WARN L151 SmtUtils]: Spent 128ms on a formula simplification. DAG size of input: 22 DAG size of output 20 [2018-04-05 16:08:46,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 16:08:46,467 INFO L93 Difference]: Finished difference Result 348 states and 376 transitions. [2018-04-05 16:08:46,468 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-04-05 16:08:46,468 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 56 [2018-04-05 16:08:46,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 16:08:46,470 INFO L225 Difference]: With dead ends: 348 [2018-04-05 16:08:46,470 INFO L226 Difference]: Without dead ends: 334 [2018-04-05 16:08:46,471 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 101 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=45, Invalid=125, Unknown=6, NotChecked=130, Total=306 [2018-04-05 16:08:46,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2018-04-05 16:08:46,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 234. [2018-04-05 16:08:46,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-04-05 16:08:46,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 254 transitions. [2018-04-05 16:08:46,561 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 254 transitions. Word has length 56 [2018-04-05 16:08:46,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 16:08:46,561 INFO L459 AbstractCegarLoop]: Abstraction has 234 states and 254 transitions. [2018-04-05 16:08:46,561 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-04-05 16:08:46,566 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 254 transitions. [2018-04-05 16:08:46,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2018-04-05 16:08:46,571 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 16:08:46,571 INFO L355 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] [2018-04-05 16:08:46,571 INFO L408 AbstractCegarLoop]: === Iteration 21 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr5RequiresViolation]=== [2018-04-05 16:08:46,571 INFO L82 PathProgramCache]: Analyzing trace with hash -1263268639, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 16:08:46,623 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 16:08:46,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 16:08:46,692 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 16:08:47,122 WARN L148 SmtUtils]: Spent 123ms on a formula simplification that was a NOOP. DAG size: 16 [2018-04-05 16:08:47,159 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 16:08:47,160 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2018-04-05 16:08:47,176 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2018-04-05 16:08:47,176 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 16:08:47,281 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:08:47,380 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-04-05 16:08:47,381 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2018-04-05 16:08:47,652 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc10.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc10.base| 1))) (and (= 0 (select |c_old(#valid)| |main_#t~malloc10.base|)) (= (select .cse0 |c_main_#t~malloc11.base|) 0) (= |c_#valid| (store (store .cse0 |c_main_#t~malloc11.base| 1) |main_#t~malloc10.base| 0))))) is different from true [2018-04-05 16:08:47,677 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc11.base| Int) (|main_#t~malloc10.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc10.base| 1))) (and (= 0 (select |c_old(#valid)| |main_#t~malloc10.base|)) (= (store (store (store .cse0 |main_#t~malloc11.base| 1) |main_#t~malloc10.base| 0) |main_#t~malloc11.base| 0) |c_#valid|) (= (select .cse0 |main_#t~malloc11.base|) 0)))) is different from true [2018-04-05 16:08:47,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:08:47,693 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 16:08:48,046 WARN L1011 $PredicateComparison]: unable to prove that (forall ((|v_main_#t~malloc11.base_28| Int)) (or (not (= 0 (select |c_#valid| |v_main_#t~malloc11.base_28|))) (= (store (store (store |c_#valid| |v_main_#t~malloc11.base_28| 1) |c_main_#t~malloc10.base| 0) |v_main_#t~malloc11.base_28| 0) |c_old(#valid)|))) is different from false [2018-04-05 16:08:48,073 WARN L1011 $PredicateComparison]: unable to prove that (forall ((|v_main_#t~malloc10.base_27| Int) (|v_main_#t~malloc11.base_28| Int)) (let ((.cse0 (store |c_#valid| |v_main_#t~malloc10.base_27| 1))) (or (not (= (select .cse0 |v_main_#t~malloc11.base_28|) 0)) (= (store (store (store .cse0 |v_main_#t~malloc11.base_28| 1) |v_main_#t~malloc10.base_27| 0) |v_main_#t~malloc11.base_28| 0) |c_old(#valid)|) (not (= (select |c_#valid| |v_main_#t~malloc10.base_27|) 0))))) is different from false [2018-04-05 16:08:48,167 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:08:48,202 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 16:08:48,202 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2018-04-05 16:08:48,203 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-04-05 16:08:48,203 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-04-05 16:08:48,203 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=45, Unknown=4, NotChecked=60, Total=132 [2018-04-05 16:08:48,203 INFO L87 Difference]: Start difference. First operand 234 states and 254 transitions. Second operand 12 states. [2018-04-05 16:08:48,374 WARN L1011 $PredicateComparison]: unable to prove that (and (= |c_#valid| |c_old(#valid)|) (forall ((|v_main_#t~malloc10.base_27| Int) (|v_main_#t~malloc11.base_28| Int)) (let ((.cse0 (store |c_#valid| |v_main_#t~malloc10.base_27| 1))) (or (not (= (select .cse0 |v_main_#t~malloc11.base_28|) 0)) (= (store (store (store .cse0 |v_main_#t~malloc11.base_28| 1) |v_main_#t~malloc10.base_27| 0) |v_main_#t~malloc11.base_28| 0) |c_old(#valid)|) (not (= (select |c_#valid| |v_main_#t~malloc10.base_27|) 0)))))) is different from false [2018-04-05 16:08:50,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 16:08:50,344 INFO L93 Difference]: Finished difference Result 349 states and 377 transitions. [2018-04-05 16:08:50,345 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-04-05 16:08:50,345 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 56 [2018-04-05 16:08:50,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 16:08:50,347 INFO L225 Difference]: With dead ends: 349 [2018-04-05 16:08:50,347 INFO L226 Difference]: Without dead ends: 335 [2018-04-05 16:08:50,348 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 101 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=45, Invalid=125, Unknown=6, NotChecked=130, Total=306 [2018-04-05 16:08:50,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2018-04-05 16:08:50,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 234. [2018-04-05 16:08:50,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 234 states. [2018-04-05 16:08:50,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 254 transitions. [2018-04-05 16:08:50,428 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 254 transitions. Word has length 56 [2018-04-05 16:08:50,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 16:08:50,428 INFO L459 AbstractCegarLoop]: Abstraction has 234 states and 254 transitions. [2018-04-05 16:08:50,428 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-04-05 16:08:50,429 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 254 transitions. [2018-04-05 16:08:50,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-04-05 16:08:50,439 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 16:08:50,439 INFO L355 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] [2018-04-05 16:08:50,439 INFO L408 AbstractCegarLoop]: === Iteration 22 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr5RequiresViolation]=== [2018-04-05 16:08:50,439 INFO L82 PathProgramCache]: Analyzing trace with hash 1247113356, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 16:08:50,478 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 16:08:50,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 16:08:50,530 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 16:08:50,793 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 16:08:50,794 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 27 [2018-04-05 16:08:50,807 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2018-04-05 16:08:50,807 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 16:08:50,860 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:08:50,908 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-04-05 16:08:50,909 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:23, output treesize:15 [2018-04-05 16:08:51,045 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc10.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc10.base| 1))) (and (= 0 (select |c_old(#valid)| |main_#t~malloc10.base|)) (= (select .cse0 |c_main_#t~malloc11.base|) 0) (= |c_#valid| (store (store .cse0 |c_main_#t~malloc11.base| 1) |main_#t~malloc10.base| 0))))) is different from true [2018-04-05 16:08:51,063 WARN L1033 $PredicateComparison]: unable to prove that (exists ((|main_#t~malloc11.base| Int) (|main_#t~malloc10.base| Int)) (let ((.cse0 (store |c_old(#valid)| |main_#t~malloc10.base| 1))) (and (= 0 (select |c_old(#valid)| |main_#t~malloc10.base|)) (= (store (store (store .cse0 |main_#t~malloc11.base| 1) |main_#t~malloc10.base| 0) |main_#t~malloc11.base| 0) |c_#valid|) (= (select .cse0 |main_#t~malloc11.base|) 0)))) is different from true [2018-04-05 16:08:51,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:08:51,079 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 16:08:51,222 WARN L1011 $PredicateComparison]: unable to prove that (forall ((|v_main_#t~malloc11.base_30| Int)) (or (not (= 0 (select |c_#valid| |v_main_#t~malloc11.base_30|))) (= |c_old(#valid)| (store (store (store |c_#valid| |v_main_#t~malloc11.base_30| 1) |c_main_#t~malloc10.base| 0) |v_main_#t~malloc11.base_30| 0)))) is different from false [2018-04-05 16:08:51,249 WARN L1011 $PredicateComparison]: unable to prove that (forall ((|v_main_#t~malloc11.base_30| Int) (|v_main_#t~malloc10.base_29| Int)) (let ((.cse0 (store |c_#valid| |v_main_#t~malloc10.base_29| 1))) (or (not (= (select |c_#valid| |v_main_#t~malloc10.base_29|) 0)) (not (= 0 (select .cse0 |v_main_#t~malloc11.base_30|))) (= (store (store (store .cse0 |v_main_#t~malloc11.base_30| 1) |v_main_#t~malloc10.base_29| 0) |v_main_#t~malloc11.base_30| 0) |c_old(#valid)|)))) is different from false [2018-04-05 16:08:51,318 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:08:51,355 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 16:08:51,355 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7, 6] imperfect sequences [] total 11 [2018-04-05 16:08:51,355 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-04-05 16:08:51,355 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-04-05 16:08:51,356 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=45, Unknown=4, NotChecked=60, Total=132 [2018-04-05 16:08:51,356 INFO L87 Difference]: Start difference. First operand 234 states and 254 transitions. Second operand 12 states. [2018-04-05 16:08:51,469 WARN L1011 $PredicateComparison]: unable to prove that (and (= |c_#valid| |c_old(#valid)|) (forall ((|v_main_#t~malloc11.base_30| Int) (|v_main_#t~malloc10.base_29| Int)) (let ((.cse0 (store |c_#valid| |v_main_#t~malloc10.base_29| 1))) (or (not (= (select |c_#valid| |v_main_#t~malloc10.base_29|) 0)) (not (= 0 (select .cse0 |v_main_#t~malloc11.base_30|))) (= (store (store (store .cse0 |v_main_#t~malloc11.base_30| 1) |v_main_#t~malloc10.base_29| 0) |v_main_#t~malloc11.base_30| 0) |c_old(#valid)|))))) is different from false [2018-04-05 16:08:53,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 16:08:53,371 INFO L93 Difference]: Finished difference Result 237 states and 254 transitions. [2018-04-05 16:08:53,375 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-04-05 16:08:53,375 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 57 [2018-04-05 16:08:53,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 16:08:53,376 INFO L225 Difference]: With dead ends: 237 [2018-04-05 16:08:53,376 INFO L226 Difference]: Without dead ends: 223 [2018-04-05 16:08:53,377 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 103 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 5 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=45, Invalid=125, Unknown=6, NotChecked=130, Total=306 [2018-04-05 16:08:53,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 223 states. [2018-04-05 16:08:53,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 223 to 120. [2018-04-05 16:08:53,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-04-05 16:08:53,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 128 transitions. [2018-04-05 16:08:53,410 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 128 transitions. Word has length 57 [2018-04-05 16:08:53,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 16:08:53,410 INFO L459 AbstractCegarLoop]: Abstraction has 120 states and 128 transitions. [2018-04-05 16:08:53,410 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-04-05 16:08:53,410 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 128 transitions. [2018-04-05 16:08:53,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2018-04-05 16:08:53,415 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 16:08:53,416 INFO L355 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 16:08:53,416 INFO L408 AbstractCegarLoop]: === Iteration 23 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr5RequiresViolation]=== [2018-04-05 16:08:53,416 INFO L82 PathProgramCache]: Analyzing trace with hash 1035920506, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 16:08:53,431 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 16:08:53,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 16:08:53,468 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 16:08:53,516 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 16:08:53,516 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 16:08:53,550 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 16:08:53,551 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 16:08:53,575 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:08:53,575 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:18, output treesize:13 [2018-04-05 16:08:53,692 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 16:08:53,699 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 16:08:53,700 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 23 [2018-04-05 16:08:53,701 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 16:08:53,769 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 16:08:53,772 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 16:08:53,773 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-04-05 16:08:53,773 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 16:08:53,817 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:08:53,818 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:27, output treesize:13 [2018-04-05 16:08:55,798 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:08:55,798 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 16:08:59,637 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 3 [2018-04-05 16:08:59,637 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 16:08:59,664 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 15 [2018-04-05 16:08:59,734 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-04-05 16:08:59,735 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-04-05 16:08:59,740 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2018-04-05 16:08:59,741 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-04-05 16:08:59,764 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:08:59,792 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:08:59,793 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:24, output treesize:7 [2018-04-05 16:09:00,077 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:09:00,129 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 16:09:00,129 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20] total 38 [2018-04-05 16:09:00,130 INFO L442 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-04-05 16:09:00,130 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-04-05 16:09:00,131 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=1373, Unknown=0, NotChecked=0, Total=1482 [2018-04-05 16:09:00,131 INFO L87 Difference]: Start difference. First operand 120 states and 128 transitions. Second operand 39 states. [2018-04-05 16:09:02,216 WARN L148 SmtUtils]: Spent 171ms on a formula simplification that was a NOOP. DAG size: 33 [2018-04-05 16:09:03,990 WARN L148 SmtUtils]: Spent 136ms on a formula simplification that was a NOOP. DAG size: 21 [2018-04-05 16:09:05,119 WARN L151 SmtUtils]: Spent 435ms on a formula simplification. DAG size of input: 35 DAG size of output 33 [2018-04-05 16:09:06,513 WARN L151 SmtUtils]: Spent 980ms on a formula simplification. DAG size of input: 49 DAG size of output 47 [2018-04-05 16:09:07,750 WARN L148 SmtUtils]: Spent 264ms on a formula simplification that was a NOOP. DAG size: 40 [2018-04-05 16:09:08,624 WARN L148 SmtUtils]: Spent 497ms on a formula simplification that was a NOOP. DAG size: 49 [2018-04-05 16:09:09,449 WARN L148 SmtUtils]: Spent 483ms on a formula simplification that was a NOOP. DAG size: 47 [2018-04-05 16:09:09,989 WARN L151 SmtUtils]: Spent 259ms on a formula simplification. DAG size of input: 35 DAG size of output 32 [2018-04-05 16:09:10,645 WARN L148 SmtUtils]: Spent 365ms on a formula simplification that was a NOOP. DAG size: 40 [2018-04-05 16:09:11,710 WARN L151 SmtUtils]: Spent 519ms on a formula simplification. DAG size of input: 46 DAG size of output 41 [2018-04-05 16:09:13,143 WARN L148 SmtUtils]: Spent 387ms on a formula simplification that was a NOOP. DAG size: 35 [2018-04-05 16:09:14,047 WARN L151 SmtUtils]: Spent 325ms on a formula simplification. DAG size of input: 36 DAG size of output 34 [2018-04-05 16:09:14,577 WARN L148 SmtUtils]: Spent 254ms on a formula simplification that was a NOOP. DAG size: 29 [2018-04-05 16:09:15,312 WARN L148 SmtUtils]: Spent 238ms on a formula simplification that was a NOOP. DAG size: 44 [2018-04-05 16:09:15,982 WARN L148 SmtUtils]: Spent 269ms on a formula simplification that was a NOOP. DAG size: 42 [2018-04-05 16:09:16,596 WARN L151 SmtUtils]: Spent 287ms on a formula simplification. DAG size of input: 35 DAG size of output 32 [2018-04-05 16:09:17,137 WARN L148 SmtUtils]: Spent 317ms on a formula simplification that was a NOOP. DAG size: 37 [2018-04-05 16:09:17,705 WARN L148 SmtUtils]: Spent 154ms on a formula simplification that was a NOOP. DAG size: 37 [2018-04-05 16:09:18,345 WARN L148 SmtUtils]: Spent 109ms on a formula simplification that was a NOOP. DAG size: 31 [2018-04-05 16:09:19,305 WARN L151 SmtUtils]: Spent 465ms on a formula simplification. DAG size of input: 43 DAG size of output 40 [2018-04-05 16:09:20,079 WARN L148 SmtUtils]: Spent 121ms on a formula simplification that was a NOOP. DAG size: 30 [2018-04-05 16:09:21,391 WARN L148 SmtUtils]: Spent 321ms on a formula simplification that was a NOOP. DAG size: 34 [2018-04-05 16:09:21,898 WARN L148 SmtUtils]: Spent 129ms on a formula simplification that was a NOOP. DAG size: 30 [2018-04-05 16:09:23,024 WARN L148 SmtUtils]: Spent 120ms on a formula simplification that was a NOOP. DAG size: 30 [2018-04-05 16:09:24,001 WARN L148 SmtUtils]: Spent 426ms on a formula simplification that was a NOOP. DAG size: 42 [2018-04-05 16:09:25,248 WARN L148 SmtUtils]: Spent 109ms on a formula simplification that was a NOOP. DAG size: 31 [2018-04-05 16:09:25,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 16:09:25,561 INFO L93 Difference]: Finished difference Result 153 states and 163 transitions. [2018-04-05 16:09:25,561 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2018-04-05 16:09:25,561 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 58 [2018-04-05 16:09:25,561 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 16:09:25,562 INFO L225 Difference]: With dead ends: 153 [2018-04-05 16:09:25,562 INFO L226 Difference]: Without dead ends: 152 [2018-04-05 16:09:25,564 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 77 SyntacticMatches, 1 SemanticMatches, 76 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1004 ImplicationChecksByTransitivity, 23.9s TimeCoverageRelationStatistics Valid=607, Invalid=5399, Unknown=0, NotChecked=0, Total=6006 [2018-04-05 16:09:25,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2018-04-05 16:09:25,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 120. [2018-04-05 16:09:25,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2018-04-05 16:09:25,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 128 transitions. [2018-04-05 16:09:25,588 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 128 transitions. Word has length 58 [2018-04-05 16:09:25,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 16:09:25,589 INFO L459 AbstractCegarLoop]: Abstraction has 120 states and 128 transitions. [2018-04-05 16:09:25,589 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-04-05 16:09:25,589 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 128 transitions. [2018-04-05 16:09:25,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2018-04-05 16:09:25,590 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 16:09:25,590 INFO L355 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 16:09:25,590 INFO L408 AbstractCegarLoop]: === Iteration 24 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr5RequiresViolation]=== [2018-04-05 16:09:25,590 INFO L82 PathProgramCache]: Analyzing trace with hash -2054739622, now seen corresponding path program 2 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 16:09:25,609 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 16:09:25,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 16:09:25,647 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 16:09:25,668 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 16:09:25,668 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 16:09:25,779 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 16:09:25,779 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 16:09:25,848 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:09:25,848 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2018-04-05 16:09:26,031 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 16:09:26,053 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-05 16:09:26,053 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 16:09:26,152 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 16:09:26,163 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 16:09:26,164 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-04-05 16:09:26,164 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 16:09:26,233 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:09:26,233 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:25, output treesize:13 [2018-04-05 16:09:26,462 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 12 [2018-04-05 16:09:26,515 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-04-05 16:09:26,515 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 16:09:26,538 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:09:26,588 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:09:26,588 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:20, output treesize:16 [2018-04-05 16:09:26,708 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 27 [2018-04-05 16:09:26,721 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-04-05 16:09:26,721 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 16:09:26,783 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:09:26,869 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-04-05 16:09:26,869 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:30, output treesize:26 [2018-04-05 16:09:28,280 WARN L148 SmtUtils]: Spent 104ms on a formula simplification that was a NOOP. DAG size: 26 [2018-04-05 16:09:28,672 WARN L148 SmtUtils]: Spent 123ms on a formula simplification that was a NOOP. DAG size: 24 [2018-04-05 16:09:28,761 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2018-04-05 16:09:28,910 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 25 [2018-04-05 16:09:28,911 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-04-05 16:09:29,103 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-05 16:09:29,357 INFO L267 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 2 xjuncts. [2018-04-05 16:09:29,357 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 6 variables, input treesize:40, output treesize:45 [2018-04-05 16:09:29,827 WARN L151 SmtUtils]: Spent 223ms on a formula simplification. DAG size of input: 27 DAG size of output 14 [2018-04-05 16:09:30,514 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2018-04-05 16:09:30,596 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 14 [2018-04-05 16:09:30,596 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-04-05 16:09:30,634 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-05 16:09:30,714 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-04-05 16:09:30,714 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:29, output treesize:32 [2018-04-05 16:09:31,091 WARN L148 SmtUtils]: Spent 129ms on a formula simplification that was a NOOP. DAG size: 15 [2018-04-05 16:09:31,623 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:09:31,657 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 16:09:33,308 WARN L148 SmtUtils]: Spent 113ms on a formula simplification that was a NOOP. DAG size: 18 [2018-04-05 16:09:34,045 WARN L148 SmtUtils]: Spent 153ms on a formula simplification that was a NOOP. DAG size: 26 [2018-04-05 16:09:34,578 WARN L148 SmtUtils]: Spent 245ms on a formula simplification that was a NOOP. DAG size: 36 [2018-04-05 16:09:37,587 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 39 treesize of output 30 [2018-04-05 16:09:37,719 WARN L148 SmtUtils]: Spent 130ms on a formula simplification that was a NOOP. DAG size: 28 [2018-04-05 16:09:37,729 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-04-05 16:09:37,730 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 16:09:37,901 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 20 [2018-04-05 16:09:37,905 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 1 [2018-04-05 16:09:37,905 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-04-05 16:09:37,933 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:09:37,944 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2018-04-05 16:09:37,957 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 12 [2018-04-05 16:09:37,958 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-04-05 16:09:37,967 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:09:38,173 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2018-04-05 16:09:38,370 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2018-04-05 16:09:38,370 INFO L202 ElimStorePlain]: Needed 7 recursive calls to eliminate 4 variables, input treesize:57, output treesize:84 [2018-04-05 16:09:39,014 WARN L151 SmtUtils]: Spent 419ms on a formula simplification. DAG size of input: 24 DAG size of output 20 [2018-04-05 16:09:39,506 WARN L148 SmtUtils]: Spent 143ms on a formula simplification that was a NOOP. DAG size: 20 [2018-04-05 16:09:40,078 WARN L151 SmtUtils]: Spent 136ms on a formula simplification. DAG size of input: 37 DAG size of output 34 [2018-04-05 16:09:40,699 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 23 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:09:40,729 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 16:09:40,729 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 19] total 38 [2018-04-05 16:09:40,730 INFO L442 AbstractCegarLoop]: Interpolant automaton has 39 states [2018-04-05 16:09:40,730 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2018-04-05 16:09:40,730 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=1369, Unknown=0, NotChecked=0, Total=1482 [2018-04-05 16:09:40,730 INFO L87 Difference]: Start difference. First operand 120 states and 128 transitions. Second operand 39 states. [2018-04-05 16:09:41,678 WARN L148 SmtUtils]: Spent 127ms on a formula simplification that was a NOOP. DAG size: 20 [2018-04-05 16:09:42,331 WARN L148 SmtUtils]: Spent 164ms on a formula simplification that was a NOOP. DAG size: 23 [2018-04-05 16:09:43,258 WARN L148 SmtUtils]: Spent 152ms on a formula simplification that was a NOOP. DAG size: 32 [2018-04-05 16:09:43,816 WARN L148 SmtUtils]: Spent 114ms on a formula simplification that was a NOOP. DAG size: 39 [2018-04-05 16:09:45,656 WARN L148 SmtUtils]: Spent 190ms on a formula simplification that was a NOOP. DAG size: 43 [2018-04-05 16:09:46,956 WARN L151 SmtUtils]: Spent 523ms on a formula simplification. DAG size of input: 77 DAG size of output 65 [2018-04-05 16:09:47,720 WARN L148 SmtUtils]: Spent 227ms on a formula simplification that was a NOOP. DAG size: 47 [2018-04-05 16:09:48,543 WARN L151 SmtUtils]: Spent 464ms on a formula simplification. DAG size of input: 59 DAG size of output 49 [2018-04-05 16:10:08,180 WARN L151 SmtUtils]: Spent 17176ms on a formula simplification. DAG size of input: 71 DAG size of output 53 [2018-04-05 16:10:11,143 WARN L151 SmtUtils]: Spent 144ms on a formula simplification. DAG size of input: 31 DAG size of output 29 [2018-04-05 16:10:11,832 WARN L151 SmtUtils]: Spent 181ms on a formula simplification. DAG size of input: 32 DAG size of output 26 [2018-04-05 16:10:12,570 WARN L151 SmtUtils]: Spent 344ms on a formula simplification. DAG size of input: 38 DAG size of output 33 [2018-04-05 16:10:13,325 WARN L151 SmtUtils]: Spent 555ms on a formula simplification. DAG size of input: 28 DAG size of output 25 [2018-04-05 16:10:13,859 WARN L148 SmtUtils]: Spent 120ms on a formula simplification that was a NOOP. DAG size: 17 [2018-04-05 16:10:14,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 16:10:14,835 INFO L93 Difference]: Finished difference Result 138 states and 146 transitions. [2018-04-05 16:10:14,836 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-04-05 16:10:14,836 INFO L78 Accepts]: Start accepts. Automaton has 39 states. Word has length 61 [2018-04-05 16:10:14,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 16:10:14,837 INFO L225 Difference]: With dead ends: 138 [2018-04-05 16:10:14,837 INFO L226 Difference]: Without dead ends: 137 [2018-04-05 16:10:14,838 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 140 GetRequests, 83 SyntacticMatches, 1 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 572 ImplicationChecksByTransitivity, 39.2s TimeCoverageRelationStatistics Valid=315, Invalid=2990, Unknown=1, NotChecked=0, Total=3306 [2018-04-05 16:10:14,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2018-04-05 16:10:14,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 131. [2018-04-05 16:10:14,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2018-04-05 16:10:14,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 140 transitions. [2018-04-05 16:10:14,870 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 140 transitions. Word has length 61 [2018-04-05 16:10:14,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 16:10:14,870 INFO L459 AbstractCegarLoop]: Abstraction has 131 states and 140 transitions. [2018-04-05 16:10:14,870 INFO L460 AbstractCegarLoop]: Interpolant automaton has 39 states. [2018-04-05 16:10:14,870 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 140 transitions. [2018-04-05 16:10:14,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-04-05 16:10:14,871 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 16:10:14,871 INFO L355 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 16:10:14,871 INFO L408 AbstractCegarLoop]: === Iteration 25 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr5RequiresViolation]=== [2018-04-05 16:10:14,871 INFO L82 PathProgramCache]: Analyzing trace with hash 727581190, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 16:10:14,893 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 16:10:14,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 16:10:14,961 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 16:10:15,032 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 16:10:15,033 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 16:10:15,075 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 16:10:15,076 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 16:10:15,106 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:10:15,107 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:18, output treesize:13 [2018-04-05 16:10:15,322 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 16:10:15,328 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 16:10:15,329 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-04-05 16:10:15,329 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 16:10:15,373 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 16:10:15,374 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 23 [2018-04-05 16:10:15,374 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 16:10:15,456 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:10:15,457 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:27, output treesize:13 [2018-04-05 16:10:16,039 WARN L148 SmtUtils]: Spent 145ms on a formula simplification that was a NOOP. DAG size: 12 [2018-04-05 16:10:18,262 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:10:18,263 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 16:10:21,853 WARN L148 SmtUtils]: Spent 475ms on a formula simplification that was a NOOP. DAG size: 20 [2018-04-05 16:10:22,562 WARN L151 SmtUtils]: Spent 152ms on a formula simplification. DAG size of input: 18 DAG size of output 13 [2018-04-05 16:10:24,495 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 1 [2018-04-05 16:10:24,495 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 16:10:24,518 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 15 [2018-04-05 16:10:24,607 WARN L307 Elim1Store]: Array PQE input equivalent to true [2018-04-05 16:10:24,607 INFO L267 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2018-04-05 16:10:24,613 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2018-04-05 16:10:24,614 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-04-05 16:10:24,658 INFO L267 ElimStorePlain]: Start of recursive call 3: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:10:24,684 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:10:24,685 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 4 variables, input treesize:24, output treesize:7 [2018-04-05 16:10:25,241 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 25 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:10:25,320 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 16:10:25,320 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 23] total 45 [2018-04-05 16:10:25,321 INFO L442 AbstractCegarLoop]: Interpolant automaton has 46 states [2018-04-05 16:10:25,321 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2018-04-05 16:10:25,326 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1921, Unknown=0, NotChecked=0, Total=2070 [2018-04-05 16:10:25,326 INFO L87 Difference]: Start difference. First operand 131 states and 140 transitions. Second operand 46 states. [2018-04-05 16:10:27,472 WARN L148 SmtUtils]: Spent 115ms on a formula simplification that was a NOOP. DAG size: 22 [2018-04-05 16:10:28,349 WARN L148 SmtUtils]: Spent 149ms on a formula simplification that was a NOOP. DAG size: 33 [2018-04-05 16:10:29,850 WARN L151 SmtUtils]: Spent 297ms on a formula simplification. DAG size of input: 45 DAG size of output 42 [2018-04-05 16:10:32,167 WARN L151 SmtUtils]: Spent 1665ms on a formula simplification. DAG size of input: 54 DAG size of output 51 [2018-04-05 16:10:33,262 WARN L148 SmtUtils]: Spent 654ms on a formula simplification that was a NOOP. DAG size: 33 [2018-04-05 16:10:34,703 WARN L151 SmtUtils]: Spent 342ms on a formula simplification. DAG size of input: 52 DAG size of output 48 [2018-04-05 16:10:35,514 WARN L148 SmtUtils]: Spent 291ms on a formula simplification that was a NOOP. DAG size: 41 [2018-04-05 16:10:36,741 WARN L148 SmtUtils]: Spent 851ms on a formula simplification that was a NOOP. DAG size: 46 [2018-04-05 16:10:37,779 WARN L151 SmtUtils]: Spent 354ms on a formula simplification. DAG size of input: 46 DAG size of output 42 [2018-04-05 16:10:38,639 WARN L148 SmtUtils]: Spent 405ms on a formula simplification that was a NOOP. DAG size: 41 [2018-04-05 16:10:39,425 WARN L148 SmtUtils]: Spent 221ms on a formula simplification that was a NOOP. DAG size: 23 [2018-04-05 16:10:40,362 WARN L148 SmtUtils]: Spent 483ms on a formula simplification that was a NOOP. DAG size: 50 [2018-04-05 16:10:41,548 WARN L151 SmtUtils]: Spent 990ms on a formula simplification. DAG size of input: 52 DAG size of output 52 [2018-04-05 16:10:42,033 WARN L148 SmtUtils]: Spent 305ms on a formula simplification that was a NOOP. DAG size: 32 [2018-04-05 16:10:44,431 WARN L151 SmtUtils]: Spent 1681ms on a formula simplification. DAG size of input: 43 DAG size of output 42 [2018-04-05 16:10:45,278 WARN L148 SmtUtils]: Spent 477ms on a formula simplification that was a NOOP. DAG size: 30 [2018-04-05 16:10:46,631 WARN L151 SmtUtils]: Spent 630ms on a formula simplification. DAG size of input: 43 DAG size of output 41 [2018-04-05 16:10:47,567 WARN L148 SmtUtils]: Spent 355ms on a formula simplification that was a NOOP. DAG size: 43 [2018-04-05 16:10:48,440 WARN L148 SmtUtils]: Spent 463ms on a formula simplification that was a NOOP. DAG size: 40 [2018-04-05 16:10:48,894 WARN L148 SmtUtils]: Spent 157ms on a formula simplification that was a NOOP. DAG size: 36 [2018-04-05 16:10:49,661 WARN L151 SmtUtils]: Spent 458ms on a formula simplification. DAG size of input: 38 DAG size of output 37 [2018-04-05 16:10:50,306 WARN L148 SmtUtils]: Spent 148ms on a formula simplification that was a NOOP. DAG size: 33 [2018-04-05 16:10:51,450 WARN L148 SmtUtils]: Spent 116ms on a formula simplification that was a NOOP. DAG size: 18 [2018-04-05 16:10:51,976 WARN L148 SmtUtils]: Spent 102ms on a formula simplification that was a NOOP. DAG size: 35 [2018-04-05 16:10:52,838 WARN L148 SmtUtils]: Spent 194ms on a formula simplification that was a NOOP. DAG size: 41 [2018-04-05 16:10:54,392 WARN L151 SmtUtils]: Spent 892ms on a formula simplification. DAG size of input: 41 DAG size of output 39 [2018-04-05 16:10:55,488 WARN L151 SmtUtils]: Spent 534ms on a formula simplification. DAG size of input: 50 DAG size of output 48 [2018-04-05 16:10:56,061 WARN L148 SmtUtils]: Spent 327ms on a formula simplification that was a NOOP. DAG size: 43 [2018-04-05 16:10:56,921 WARN L148 SmtUtils]: Spent 254ms on a formula simplification that was a NOOP. DAG size: 47 [2018-04-05 16:10:57,895 WARN L148 SmtUtils]: Spent 165ms on a formula simplification that was a NOOP. DAG size: 25 [2018-04-05 16:10:58,586 WARN L148 SmtUtils]: Spent 192ms on a formula simplification that was a NOOP. DAG size: 33 [2018-04-05 16:10:59,230 WARN L148 SmtUtils]: Spent 406ms on a formula simplification that was a NOOP. DAG size: 42 [2018-04-05 16:10:59,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 16:10:59,813 INFO L93 Difference]: Finished difference Result 189 states and 201 transitions. [2018-04-05 16:10:59,814 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2018-04-05 16:10:59,814 INFO L78 Accepts]: Start accepts. Automaton has 46 states. Word has length 62 [2018-04-05 16:10:59,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 16:10:59,815 INFO L225 Difference]: With dead ends: 189 [2018-04-05 16:10:59,815 INFO L226 Difference]: Without dead ends: 188 [2018-04-05 16:10:59,818 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 173 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1632 ImplicationChecksByTransitivity, 36.7s TimeCoverageRelationStatistics Valid=935, Invalid=8185, Unknown=0, NotChecked=0, Total=9120 [2018-04-05 16:10:59,818 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 188 states. [2018-04-05 16:10:59,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 188 to 182. [2018-04-05 16:10:59,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 182 states. [2018-04-05 16:10:59,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 182 states to 182 states and 192 transitions. [2018-04-05 16:10:59,910 INFO L78 Accepts]: Start accepts. Automaton has 182 states and 192 transitions. Word has length 62 [2018-04-05 16:10:59,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 16:10:59,911 INFO L459 AbstractCegarLoop]: Abstraction has 182 states and 192 transitions. [2018-04-05 16:10:59,911 INFO L460 AbstractCegarLoop]: Interpolant automaton has 46 states. [2018-04-05 16:10:59,911 INFO L276 IsEmpty]: Start isEmpty. Operand 182 states and 192 transitions. [2018-04-05 16:10:59,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2018-04-05 16:10:59,912 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 16:10:59,912 INFO L355 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 16:10:59,912 INFO L408 AbstractCegarLoop]: === Iteration 26 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr5RequiresViolation]=== [2018-04-05 16:10:59,912 INFO L82 PathProgramCache]: Analyzing trace with hash -740387276, now seen corresponding path program 2 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 16:10:59,952 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 16:10:59,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 16:11:00,003 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 16:11:00,190 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 16:11:00,191 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 16:11:00,223 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:11:00,224 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:14 [2018-04-05 16:11:00,337 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-04-05 16:11:00,340 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-04-05 16:11:00,341 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 16:11:00,348 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:11:00,374 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-04-05 16:11:00,375 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:28, output treesize:24 [2018-04-05 16:11:01,084 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2018-04-05 16:11:01,127 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 16:11:01,246 INFO L303 Elim1Store]: Index analysis took 140 ms [2018-04-05 16:11:01,360 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 31 [2018-04-05 16:11:01,361 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-04-05 16:11:01,495 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-05 16:11:01,754 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-04-05 16:11:01,755 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:49, output treesize:49 [2018-04-05 16:11:02,731 WARN L151 SmtUtils]: Spent 607ms on a formula simplification. DAG size of input: 20 DAG size of output 19 [2018-04-05 16:11:03,159 WARN L148 SmtUtils]: Spent 140ms on a formula simplification that was a NOOP. DAG size: 11 [2018-04-05 16:11:04,174 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:11:04,174 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 16:11:07,597 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2018-04-05 16:11:07,703 INFO L682 Elim1Store]: detected equality via solver [2018-04-05 16:11:07,717 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 5 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 12 [2018-04-05 16:11:07,718 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 16:11:07,885 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:11:08,057 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-04-05 16:11:08,057 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:42, output treesize:54 [2018-04-05 16:11:08,858 WARN L151 SmtUtils]: Spent 221ms on a formula simplification. DAG size of input: 23 DAG size of output 17 [2018-04-05 16:11:09,510 WARN L148 SmtUtils]: Spent 441ms on a formula simplification that was a NOOP. DAG size: 17 [2018-04-05 16:11:09,850 WARN L151 SmtUtils]: Spent 141ms on a formula simplification. DAG size of input: 11 DAG size of output 10 [2018-04-05 16:11:10,122 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:11:10,176 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 16:11:10,176 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18] total 34 [2018-04-05 16:11:10,177 INFO L442 AbstractCegarLoop]: Interpolant automaton has 35 states [2018-04-05 16:11:10,177 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2018-04-05 16:11:10,178 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=1076, Unknown=0, NotChecked=0, Total=1190 [2018-04-05 16:11:10,178 INFO L87 Difference]: Start difference. First operand 182 states and 192 transitions. Second operand 35 states. [2018-04-05 16:11:11,659 WARN L148 SmtUtils]: Spent 177ms on a formula simplification that was a NOOP. DAG size: 21 [2018-04-05 16:11:12,549 WARN L148 SmtUtils]: Spent 230ms on a formula simplification that was a NOOP. DAG size: 29 [2018-04-05 16:11:14,358 WARN L151 SmtUtils]: Spent 121ms on a formula simplification. DAG size of input: 56 DAG size of output 40 [2018-04-05 16:11:14,895 WARN L151 SmtUtils]: Spent 102ms on a formula simplification. DAG size of input: 38 DAG size of output 35 [2018-04-05 16:11:15,838 WARN L151 SmtUtils]: Spent 692ms on a formula simplification. DAG size of input: 59 DAG size of output 51 [2018-04-05 16:11:16,620 WARN L151 SmtUtils]: Spent 142ms on a formula simplification. DAG size of input: 51 DAG size of output 48 [2018-04-05 16:11:17,441 WARN L151 SmtUtils]: Spent 249ms on a formula simplification. DAG size of input: 20 DAG size of output 17 [2018-04-05 16:11:18,463 WARN L151 SmtUtils]: Spent 260ms on a formula simplification. DAG size of input: 48 DAG size of output 45 [2018-04-05 16:11:20,868 WARN L151 SmtUtils]: Spent 124ms on a formula simplification. DAG size of input: 39 DAG size of output 37 [2018-04-05 16:11:22,138 WARN L151 SmtUtils]: Spent 573ms on a formula simplification. DAG size of input: 50 DAG size of output 48 [2018-04-05 16:11:22,879 WARN L151 SmtUtils]: Spent 226ms on a formula simplification. DAG size of input: 34 DAG size of output 31 [2018-04-05 16:11:23,482 WARN L151 SmtUtils]: Spent 181ms on a formula simplification. DAG size of input: 46 DAG size of output 44 [2018-04-05 16:11:24,614 WARN L151 SmtUtils]: Spent 383ms on a formula simplification. DAG size of input: 49 DAG size of output 43 [2018-04-05 16:11:26,071 WARN L151 SmtUtils]: Spent 303ms on a formula simplification. DAG size of input: 44 DAG size of output 38 [2018-04-05 16:11:27,549 WARN L151 SmtUtils]: Spent 348ms on a formula simplification. DAG size of input: 40 DAG size of output 37 [2018-04-05 16:11:28,019 WARN L148 SmtUtils]: Spent 114ms on a formula simplification that was a NOOP. DAG size: 18 [2018-04-05 16:11:29,154 WARN L151 SmtUtils]: Spent 573ms on a formula simplification. DAG size of input: 46 DAG size of output 40 [2018-04-05 16:11:29,973 WARN L151 SmtUtils]: Spent 247ms on a formula simplification. DAG size of input: 22 DAG size of output 19 [2018-04-05 16:11:30,590 WARN L148 SmtUtils]: Spent 131ms on a formula simplification that was a NOOP. DAG size: 34 [2018-04-05 16:11:31,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 16:11:31,645 INFO L93 Difference]: Finished difference Result 226 states and 237 transitions. [2018-04-05 16:11:31,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-04-05 16:11:31,646 INFO L78 Accepts]: Start accepts. Automaton has 35 states. Word has length 65 [2018-04-05 16:11:31,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 16:11:31,647 INFO L225 Difference]: With dead ends: 226 [2018-04-05 16:11:31,647 INFO L226 Difference]: Without dead ends: 225 [2018-04-05 16:11:31,653 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 910 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=514, Invalid=4316, Unknown=0, NotChecked=0, Total=4830 [2018-04-05 16:11:31,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 225 states. [2018-04-05 16:11:31,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 225 to 201. [2018-04-05 16:11:31,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 201 states. [2018-04-05 16:11:31,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 201 states to 201 states and 211 transitions. [2018-04-05 16:11:31,703 INFO L78 Accepts]: Start accepts. Automaton has 201 states and 211 transitions. Word has length 65 [2018-04-05 16:11:31,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 16:11:31,703 INFO L459 AbstractCegarLoop]: Abstraction has 201 states and 211 transitions. [2018-04-05 16:11:31,703 INFO L460 AbstractCegarLoop]: Interpolant automaton has 35 states. [2018-04-05 16:11:31,704 INFO L276 IsEmpty]: Start isEmpty. Operand 201 states and 211 transitions. [2018-04-05 16:11:31,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2018-04-05 16:11:31,708 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 16:11:31,708 INFO L355 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 16:11:31,709 INFO L408 AbstractCegarLoop]: === Iteration 27 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr5RequiresViolation]=== [2018-04-05 16:11:31,709 INFO L82 PathProgramCache]: Analyzing trace with hash -76833573, now seen corresponding path program 3 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 16:11:31,736 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 16:11:31,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 16:11:31,790 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 16:11:31,907 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 16:11:31,939 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 16:11:31,972 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:11:31,973 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:18, output treesize:14 [2018-04-05 16:11:32,102 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-04-05 16:11:32,105 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-04-05 16:11:32,105 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 16:11:32,116 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:11:32,150 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-04-05 16:11:32,150 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:28, output treesize:24 [2018-04-05 16:11:33,697 WARN L148 SmtUtils]: Spent 131ms on a formula simplification that was a NOOP. DAG size: 39 [2018-04-05 16:11:33,704 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 48 treesize of output 38 [2018-04-05 16:11:33,760 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 16:11:33,795 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 16:11:33,811 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 16:11:33,819 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 16:11:33,830 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 16:11:33,841 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 16:11:33,894 INFO L303 Elim1Store]: Index analysis took 187 ms [2018-04-05 16:11:33,916 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 12 disjoint index pairs (out of 10 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 38 treesize of output 93 [2018-04-05 16:11:33,918 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-04-05 16:11:34,967 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-05 16:11:35,754 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-04-05 16:11:35,754 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:69, output treesize:73 [2018-04-05 16:11:36,580 WARN L151 SmtUtils]: Spent 644ms on a formula simplification. DAG size of input: 23 DAG size of output 18 [2018-04-05 16:11:37,290 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:11:37,291 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 16:11:38,550 WARN L148 SmtUtils]: Spent 116ms on a formula simplification that was a NOOP. DAG size: 19 [2018-04-05 16:11:39,208 WARN L148 SmtUtils]: Spent 147ms on a formula simplification that was a NOOP. DAG size: 21 [2018-04-05 16:11:40,743 WARN L148 SmtUtils]: Spent 291ms on a formula simplification that was a NOOP. DAG size: 25 [2018-04-05 16:11:41,948 WARN L151 SmtUtils]: Spent 399ms on a formula simplification. DAG size of input: 30 DAG size of output 26 [2018-04-05 16:11:42,931 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 59 treesize of output 51 [2018-04-05 16:11:43,171 WARN L151 SmtUtils]: Spent 238ms on a formula simplification. DAG size of input: 35 DAG size of output 27 [2018-04-05 16:11:43,179 INFO L682 Elim1Store]: detected equality via solver [2018-04-05 16:11:43,180 INFO L682 Elim1Store]: detected equality via solver [2018-04-05 16:11:43,181 INFO L682 Elim1Store]: detected equality via solver [2018-04-05 16:11:43,185 INFO L682 Elim1Store]: detected equality via solver [2018-04-05 16:11:43,188 INFO L682 Elim1Store]: detected equality via solver [2018-04-05 16:11:43,192 INFO L682 Elim1Store]: detected equality via solver [2018-04-05 16:11:43,241 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 14 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 49 [2018-04-05 16:11:43,241 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 16:11:43,382 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:11:43,459 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-04-05 16:11:43,459 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:72, output treesize:86 [2018-04-05 16:11:43,899 WARN L151 SmtUtils]: Spent 224ms on a formula simplification. DAG size of input: 33 DAG size of output 17 [2018-04-05 16:11:44,768 WARN L151 SmtUtils]: Spent 286ms on a formula simplification. DAG size of input: 11 DAG size of output 10 [2018-04-05 16:11:45,402 WARN L148 SmtUtils]: Spent 139ms on a formula simplification that was a NOOP. DAG size: 11 [2018-04-05 16:11:45,455 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 80 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:11:45,492 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 16:11:45,492 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 22] total 42 [2018-04-05 16:11:45,492 INFO L442 AbstractCegarLoop]: Interpolant automaton has 43 states [2018-04-05 16:11:45,493 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2018-04-05 16:11:45,493 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=1599, Unknown=0, NotChecked=0, Total=1806 [2018-04-05 16:11:45,494 INFO L87 Difference]: Start difference. First operand 201 states and 211 transitions. Second operand 43 states. [2018-04-05 16:11:48,819 WARN L148 SmtUtils]: Spent 145ms on a formula simplification that was a NOOP. DAG size: 38 [2018-04-05 16:11:49,465 WARN L151 SmtUtils]: Spent 271ms on a formula simplification. DAG size of input: 63 DAG size of output 33 [2018-04-05 16:11:53,330 WARN L151 SmtUtils]: Spent 482ms on a formula simplification. DAG size of input: 85 DAG size of output 77 [2018-04-05 16:11:53,900 WARN L151 SmtUtils]: Spent 352ms on a formula simplification. DAG size of input: 79 DAG size of output 72 [2018-04-05 16:11:54,575 WARN L151 SmtUtils]: Spent 282ms on a formula simplification. DAG size of input: 56 DAG size of output 50 [2018-04-05 16:11:55,241 WARN L151 SmtUtils]: Spent 464ms on a formula simplification. DAG size of input: 61 DAG size of output 57 [2018-04-05 16:11:56,032 WARN L151 SmtUtils]: Spent 589ms on a formula simplification. DAG size of input: 69 DAG size of output 63 [2018-04-05 16:11:56,389 WARN L151 SmtUtils]: Spent 201ms on a formula simplification. DAG size of input: 52 DAG size of output 46 [2018-04-05 16:11:56,956 WARN L151 SmtUtils]: Spent 209ms on a formula simplification. DAG size of input: 51 DAG size of output 45 [2018-04-05 16:11:57,514 WARN L151 SmtUtils]: Spent 346ms on a formula simplification. DAG size of input: 55 DAG size of output 49 [2018-04-05 16:11:58,267 WARN L151 SmtUtils]: Spent 585ms on a formula simplification. DAG size of input: 70 DAG size of output 60 [2018-04-05 16:11:58,577 WARN L151 SmtUtils]: Spent 137ms on a formula simplification. DAG size of input: 47 DAG size of output 39 [2018-04-05 16:11:59,358 WARN L151 SmtUtils]: Spent 152ms on a formula simplification. DAG size of input: 41 DAG size of output 36 [2018-04-05 16:11:59,971 WARN L151 SmtUtils]: Spent 132ms on a formula simplification. DAG size of input: 44 DAG size of output 39 [2018-04-05 16:12:00,595 WARN L151 SmtUtils]: Spent 469ms on a formula simplification. DAG size of input: 68 DAG size of output 58 [2018-04-05 16:12:01,866 WARN L151 SmtUtils]: Spent 458ms on a formula simplification. DAG size of input: 65 DAG size of output 55 [2018-04-05 16:12:03,165 WARN L151 SmtUtils]: Spent 519ms on a formula simplification. DAG size of input: 63 DAG size of output 55 [2018-04-05 16:12:03,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 16:12:03,310 INFO L93 Difference]: Finished difference Result 251 states and 268 transitions. [2018-04-05 16:12:03,310 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-04-05 16:12:03,311 INFO L78 Accepts]: Start accepts. Automaton has 43 states. Word has length 66 [2018-04-05 16:12:03,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 16:12:03,312 INFO L225 Difference]: With dead ends: 251 [2018-04-05 16:12:03,312 INFO L226 Difference]: Without dead ends: 250 [2018-04-05 16:12:03,314 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 89 SyntacticMatches, 1 SemanticMatches, 78 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1390 ImplicationChecksByTransitivity, 22.7s TimeCoverageRelationStatistics Valid=871, Invalid=5449, Unknown=0, NotChecked=0, Total=6320 [2018-04-05 16:12:03,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2018-04-05 16:12:03,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 229. [2018-04-05 16:12:03,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 229 states. [2018-04-05 16:12:03,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 243 transitions. [2018-04-05 16:12:03,383 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 243 transitions. Word has length 66 [2018-04-05 16:12:03,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 16:12:03,383 INFO L459 AbstractCegarLoop]: Abstraction has 229 states and 243 transitions. [2018-04-05 16:12:03,383 INFO L460 AbstractCegarLoop]: Interpolant automaton has 43 states. [2018-04-05 16:12:03,383 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 243 transitions. [2018-04-05 16:12:03,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-04-05 16:12:03,384 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 16:12:03,384 INFO L355 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 16:12:03,384 INFO L408 AbstractCegarLoop]: === Iteration 28 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr5RequiresViolation]=== [2018-04-05 16:12:03,384 INFO L82 PathProgramCache]: Analyzing trace with hash -1610415124, now seen corresponding path program 3 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 16:12:03,407 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 16:12:03,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 16:12:03,467 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 16:12:03,484 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 16:12:03,484 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 16:12:03,637 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 16:12:03,637 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 16:12:03,738 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:12:03,738 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:16, output treesize:14 [2018-04-05 16:12:03,911 WARN L148 SmtUtils]: Spent 163ms on a formula simplification that was a NOOP. DAG size: 13 [2018-04-05 16:12:03,969 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 16:12:03,979 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 16:12:03,980 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-04-05 16:12:03,980 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 16:12:04,031 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 15 [2018-04-05 16:12:04,032 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 16:12:04,073 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:12:04,074 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:25, output treesize:13 [2018-04-05 16:12:04,184 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 12 [2018-04-05 16:12:04,188 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-04-05 16:12:04,189 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 16:12:04,197 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:12:04,214 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:12:04,214 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:20, output treesize:16 [2018-04-05 16:12:04,297 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 27 [2018-04-05 16:12:04,305 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-04-05 16:12:04,306 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 16:12:04,333 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:12:04,356 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-04-05 16:12:04,357 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:30, output treesize:26 [2018-04-05 16:12:05,486 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 32 [2018-04-05 16:12:05,533 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 25 [2018-04-05 16:12:05,534 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-04-05 16:12:05,609 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-05 16:12:05,706 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-2 vars, End of recursive call: 2 dim-0 vars, and 2 xjuncts. [2018-04-05 16:12:05,706 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:40, output treesize:49 [2018-04-05 16:12:05,908 WARN L151 SmtUtils]: Spent 100ms on a formula simplification. DAG size of input: 26 DAG size of output 17 [2018-04-05 16:12:06,335 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 24 [2018-04-05 16:12:06,342 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-04-05 16:12:06,343 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 16:12:06,371 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:12:06,403 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:12:06,404 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:30, output treesize:15 [2018-04-05 16:12:06,818 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 17 [2018-04-05 16:12:06,865 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 17 treesize of output 14 [2018-04-05 16:12:06,866 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-04-05 16:12:06,888 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-05 16:12:06,925 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-04-05 16:12:06,926 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 1 variables, input treesize:29, output treesize:32 [2018-04-05 16:12:07,481 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:12:07,481 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 16:12:10,748 WARN L148 SmtUtils]: Spent 237ms on a formula simplification that was a NOOP. DAG size: 56 [2018-04-05 16:12:13,636 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 31 [2018-04-05 16:12:13,698 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 11 [2018-04-05 16:12:13,699 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 16:12:13,886 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 18 [2018-04-05 16:12:13,894 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 10 [2018-04-05 16:12:13,895 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-04-05 16:12:13,941 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:12:13,977 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 32 treesize of output 34 [2018-04-05 16:12:13,985 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 24 [2018-04-05 16:12:13,986 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-04-05 16:12:14,056 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 24 [2018-04-05 16:12:14,326 WARN L148 SmtUtils]: Spent 268ms on a formula simplification that was a NOOP. DAG size: 27 [2018-04-05 16:12:14,329 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-04-05 16:12:14,330 INFO L267 ElimStorePlain]: Start of recursive call 9: End of recursive call: and 1 xjuncts. [2018-04-05 16:12:14,462 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 12 [2018-04-05 16:12:14,462 INFO L267 ElimStorePlain]: Start of recursive call 10: End of recursive call: and 2 xjuncts. [2018-04-05 16:12:14,879 INFO L267 ElimStorePlain]: Start of recursive call 8: 1 dim-1 vars, End of recursive call: and 5 xjuncts. [2018-04-05 16:12:15,523 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 26 treesize of output 52 [2018-04-05 16:12:15,955 WARN L151 SmtUtils]: Spent 428ms on a formula simplification. DAG size of input: 63 DAG size of output 52 [2018-04-05 16:12:15,993 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 24 [2018-04-05 16:12:15,993 INFO L267 ElimStorePlain]: Start of recursive call 12: End of recursive call: and 1 xjuncts. [2018-04-05 16:12:16,005 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 35 treesize of output 24 [2018-04-05 16:12:16,005 INFO L267 ElimStorePlain]: Start of recursive call 13: End of recursive call: and 1 xjuncts. [2018-04-05 16:12:16,012 INFO L682 Elim1Store]: detected equality via solver [2018-04-05 16:12:16,021 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 25 [2018-04-05 16:12:16,021 INFO L267 ElimStorePlain]: Start of recursive call 14: End of recursive call: and 1 xjuncts. [2018-04-05 16:12:16,506 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 32 [2018-04-05 16:12:16,507 INFO L267 ElimStorePlain]: Start of recursive call 15: End of recursive call: and 3 xjuncts. [2018-04-05 16:12:16,615 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 32 [2018-04-05 16:12:16,616 INFO L267 ElimStorePlain]: Start of recursive call 16: End of recursive call: and 3 xjuncts. [2018-04-05 16:12:17,188 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2018-04-05 16:12:17,189 INFO L267 ElimStorePlain]: Start of recursive call 17: End of recursive call: and 2 xjuncts. [2018-04-05 16:12:17,231 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 22 [2018-04-05 16:12:17,232 INFO L267 ElimStorePlain]: Start of recursive call 18: End of recursive call: and 2 xjuncts. [2018-04-05 16:12:17,432 INFO L267 ElimStorePlain]: Start of recursive call 11: 3 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-04-05 16:12:17,600 INFO L267 ElimStorePlain]: Start of recursive call 6: 3 dim-1 vars, End of recursive call: and 3 xjuncts. [2018-04-05 16:12:17,603 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 25 [2018-04-05 16:12:17,845 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 32 [2018-04-05 16:12:18,070 WARN L148 SmtUtils]: Spent 223ms on a formula simplification that was a NOOP. DAG size: 39 [2018-04-05 16:12:18,112 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 26 [2018-04-05 16:12:18,113 INFO L267 ElimStorePlain]: Start of recursive call 21: End of recursive call: and 2 xjuncts. [2018-04-05 16:12:18,156 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 26 [2018-04-05 16:12:18,157 INFO L267 ElimStorePlain]: Start of recursive call 22: End of recursive call: and 2 xjuncts. [2018-04-05 16:12:18,163 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 16 [2018-04-05 16:12:18,164 INFO L267 ElimStorePlain]: Start of recursive call 23: End of recursive call: and 1 xjuncts. [2018-04-05 16:12:18,466 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 24 treesize of output 32 [2018-04-05 16:12:18,467 INFO L267 ElimStorePlain]: Start of recursive call 24: End of recursive call: and 3 xjuncts. [2018-04-05 16:12:18,507 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 19 [2018-04-05 16:12:18,508 INFO L267 ElimStorePlain]: Start of recursive call 25: End of recursive call: and 2 xjuncts. [2018-04-05 16:12:19,056 INFO L267 ElimStorePlain]: Start of recursive call 20: 2 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-04-05 16:12:19,208 INFO L267 ElimStorePlain]: Start of recursive call 19: 1 dim-1 vars, End of recursive call: and 4 xjuncts. [2018-04-05 16:12:19,486 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 5 xjuncts. [2018-04-05 16:12:20,063 INFO L267 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 4 xjuncts. [2018-04-05 16:12:20,064 INFO L202 ElimStorePlain]: Needed 25 recursive calls to eliminate 6 variables, input treesize:58, output treesize:84 [2018-04-05 16:12:20,718 WARN L151 SmtUtils]: Spent 447ms on a formula simplification. DAG size of input: 24 DAG size of output 20 [2018-04-05 16:12:22,044 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:12:22,089 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 16:12:22,089 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [25, 24] total 48 [2018-04-05 16:12:22,089 INFO L442 AbstractCegarLoop]: Interpolant automaton has 49 states [2018-04-05 16:12:22,090 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2018-04-05 16:12:22,090 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=170, Invalid=2182, Unknown=0, NotChecked=0, Total=2352 [2018-04-05 16:12:22,091 INFO L87 Difference]: Start difference. First operand 229 states and 243 transitions. Second operand 49 states. [2018-04-05 16:12:25,046 WARN L148 SmtUtils]: Spent 128ms on a formula simplification that was a NOOP. DAG size: 36 [2018-04-05 16:12:25,707 WARN L151 SmtUtils]: Spent 104ms on a formula simplification. DAG size of input: 42 DAG size of output 38 [2018-04-05 16:12:26,299 WARN L151 SmtUtils]: Spent 198ms on a formula simplification. DAG size of input: 97 DAG size of output 71 [2018-04-05 16:12:26,630 WARN L151 SmtUtils]: Spent 114ms on a formula simplification. DAG size of input: 55 DAG size of output 51 [2018-04-05 16:12:27,018 WARN L151 SmtUtils]: Spent 170ms on a formula simplification. DAG size of input: 96 DAG size of output 53 [2018-04-05 16:12:28,478 WARN L151 SmtUtils]: Spent 751ms on a formula simplification. DAG size of input: 125 DAG size of output 85 [2018-04-05 16:12:29,458 WARN L151 SmtUtils]: Spent 225ms on a formula simplification. DAG size of input: 88 DAG size of output 52 [2018-04-05 16:12:31,056 WARN L151 SmtUtils]: Spent 163ms on a formula simplification. DAG size of input: 79 DAG size of output 43 [2018-04-05 16:12:32,310 WARN L151 SmtUtils]: Spent 756ms on a formula simplification. DAG size of input: 104 DAG size of output 73 [2018-04-05 16:12:33,708 WARN L151 SmtUtils]: Spent 767ms on a formula simplification. DAG size of input: 102 DAG size of output 78 [2018-04-05 16:12:35,111 WARN L151 SmtUtils]: Spent 856ms on a formula simplification. DAG size of input: 106 DAG size of output 81 [2018-04-05 16:12:36,545 WARN L151 SmtUtils]: Spent 501ms on a formula simplification. DAG size of input: 92 DAG size of output 67 [2018-04-05 16:12:40,309 WARN L151 SmtUtils]: Spent 3476ms on a formula simplification. DAG size of input: 88 DAG size of output 57 [2018-04-05 16:12:40,872 WARN L151 SmtUtils]: Spent 185ms on a formula simplification. DAG size of input: 68 DAG size of output 35 [2018-04-05 16:12:41,395 WARN L151 SmtUtils]: Spent 162ms on a formula simplification. DAG size of input: 22 DAG size of output 20 [2018-04-05 16:12:42,792 WARN L151 SmtUtils]: Spent 400ms on a formula simplification. DAG size of input: 89 DAG size of output 48 [2018-04-05 16:12:43,691 WARN L151 SmtUtils]: Spent 234ms on a formula simplification. DAG size of input: 89 DAG size of output 39 [2018-04-05 16:12:44,397 WARN L151 SmtUtils]: Spent 390ms on a formula simplification. DAG size of input: 98 DAG size of output 45 [2018-04-05 16:12:47,550 WARN L151 SmtUtils]: Spent 316ms on a formula simplification. DAG size of input: 94 DAG size of output 42 [2018-04-05 16:12:48,039 WARN L151 SmtUtils]: Spent 197ms on a formula simplification. DAG size of input: 71 DAG size of output 37 [2018-04-05 16:12:48,753 WARN L151 SmtUtils]: Spent 303ms on a formula simplification. DAG size of input: 24 DAG size of output 20 [2018-04-05 16:12:50,001 WARN L151 SmtUtils]: Spent 568ms on a formula simplification. DAG size of input: 93 DAG size of output 51 [2018-04-05 16:12:50,690 WARN L151 SmtUtils]: Spent 247ms on a formula simplification. DAG size of input: 92 DAG size of output 42 [2018-04-05 16:12:51,575 WARN L151 SmtUtils]: Spent 518ms on a formula simplification. DAG size of input: 100 DAG size of output 48 [2018-04-05 16:12:52,399 WARN L151 SmtUtils]: Spent 256ms on a formula simplification. DAG size of input: 96 DAG size of output 43 [2018-04-05 16:12:53,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 16:12:53,209 INFO L93 Difference]: Finished difference Result 236 states and 249 transitions. [2018-04-05 16:12:53,212 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-04-05 16:12:53,212 INFO L78 Accepts]: Start accepts. Automaton has 49 states. Word has length 72 [2018-04-05 16:12:53,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 16:12:53,214 INFO L225 Difference]: With dead ends: 236 [2018-04-05 16:12:53,214 INFO L226 Difference]: Without dead ends: 235 [2018-04-05 16:12:53,216 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1243 ImplicationChecksByTransitivity, 31.6s TimeCoverageRelationStatistics Valid=813, Invalid=5667, Unknown=0, NotChecked=0, Total=6480 [2018-04-05 16:12:53,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 235 states. [2018-04-05 16:12:53,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 235 to 154. [2018-04-05 16:12:53,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2018-04-05 16:12:53,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 166 transitions. [2018-04-05 16:12:53,256 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 166 transitions. Word has length 72 [2018-04-05 16:12:53,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 16:12:53,257 INFO L459 AbstractCegarLoop]: Abstraction has 154 states and 166 transitions. [2018-04-05 16:12:53,257 INFO L460 AbstractCegarLoop]: Interpolant automaton has 49 states. [2018-04-05 16:12:53,257 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 166 transitions. [2018-04-05 16:12:53,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-04-05 16:12:53,257 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 16:12:53,258 INFO L355 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 16:12:53,262 INFO L408 AbstractCegarLoop]: === Iteration 29 === [mainErr3RequiresViolation, mainErr1RequiresViolation, mainErr2RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr2RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr4RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr0RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr3RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr1RequiresViolation, __U_MULTI_fopenbsd_cstrcat_alloca_true_valid_memsafety_true_termination_i__cstrcatErr5RequiresViolation]=== [2018-04-05 16:12:53,262 INFO L82 PathProgramCache]: Analyzing trace with hash 2103712966, now seen corresponding path program 3 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 16:12:53,282 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 16:12:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 16:12:53,369 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 16:12:53,436 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 16:12:53,437 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 16:12:53,478 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 16:12:53,479 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 16:12:53,516 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:12:53,516 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:21, output treesize:16 [2018-04-05 16:12:53,629 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 16:12:53,634 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 16:12:53,635 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 23 [2018-04-05 16:12:53,635 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 16:12:53,747 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 16:12:53,760 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 16:12:53,761 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-04-05 16:12:53,762 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 16:12:53,820 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:12:53,821 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:30, output treesize:16 [2018-04-05 16:12:53,976 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 11 [2018-04-05 16:12:53,984 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 10 [2018-04-05 16:12:53,985 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 16:12:54,004 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:12:54,136 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-04-05 16:12:54,136 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:30, output treesize:26 [2018-04-05 16:12:54,603 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 14 [2018-04-05 16:12:54,712 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 11 [2018-04-05 16:12:54,712 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 2 xjuncts. [2018-04-05 16:12:54,787 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-05 16:12:55,147 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 2 xjuncts. [2018-04-05 16:12:55,147 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:39, output treesize:46 [2018-04-05 16:12:55,911 WARN L151 SmtUtils]: Spent 484ms on a formula simplification. DAG size of input: 20 DAG size of output 20 [2018-04-05 16:12:56,243 WARN L148 SmtUtils]: Spent 135ms on a formula simplification that was a NOOP. DAG size: 12 [2018-04-05 16:12:56,768 WARN L148 SmtUtils]: Spent 120ms on a formula simplification that was a NOOP. DAG size: 12 [2018-04-05 16:12:59,268 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:12:59,268 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 16:13:01,264 WARN L148 SmtUtils]: Spent 157ms on a formula simplification that was a NOOP. DAG size: 18 [2018-04-05 16:13:04,434 WARN L151 SmtUtils]: Spent 103ms on a formula simplification. DAG size of input: 24 DAG size of output 19 [2018-04-05 16:13:05,214 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 11 [2018-04-05 16:13:05,287 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2018-04-05 16:13:05,288 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 16:13:05,294 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:13:05,342 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:13:05,342 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:32, output treesize:45 [2018-04-05 16:13:05,673 WARN L148 SmtUtils]: Spent 105ms on a formula simplification that was a NOOP. DAG size: 24 [2018-04-05 16:13:06,115 WARN L148 SmtUtils]: Spent 116ms on a formula simplification that was a NOOP. DAG size: 24 [2018-04-05 16:13:06,508 WARN L151 SmtUtils]: Spent 142ms on a formula simplification. DAG size of input: 26 DAG size of output 24 [2018-04-05 16:13:07,087 WARN L148 SmtUtils]: Spent 119ms on a formula simplification that was a NOOP. DAG size: 41 [2018-04-05 16:13:07,090 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2018-04-05 16:13:07,091 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 16:13:07,185 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 21 [2018-04-05 16:13:07,186 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 16:13:07,277 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 24 [2018-04-05 16:13:07,403 WARN L151 SmtUtils]: Spent 124ms on a formula simplification. DAG size of input: 21 DAG size of output 17 [2018-04-05 16:13:07,408 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2018-04-05 16:13:07,409 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-04-05 16:13:07,446 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:13:07,539 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 24 [2018-04-05 16:13:07,653 WARN L151 SmtUtils]: Spent 113ms on a formula simplification. DAG size of input: 21 DAG size of output 17 [2018-04-05 16:13:07,658 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 3 [2018-04-05 16:13:07,658 INFO L267 ElimStorePlain]: Start of recursive call 7: End of recursive call: and 1 xjuncts. [2018-04-05 16:13:07,690 INFO L267 ElimStorePlain]: Start of recursive call 6: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 16:13:07,789 INFO L267 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 4 dim-1 vars, End of recursive call: and 2 xjuncts. [2018-04-05 16:13:07,790 INFO L202 ElimStorePlain]: Needed 7 recursive calls to eliminate 8 variables, input treesize:55, output treesize:21 [2018-04-05 16:13:08,216 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 16:13:08,280 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 16:13:08,280 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 27] total 52 [2018-04-05 16:13:08,281 INFO L442 AbstractCegarLoop]: Interpolant automaton has 53 states [2018-04-05 16:13:08,281 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 53 interpolants. [2018-04-05 16:13:08,282 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=2590, Unknown=0, NotChecked=0, Total=2756 [2018-04-05 16:13:08,282 INFO L87 Difference]: Start difference. First operand 154 states and 166 transitions. Second operand 53 states. [2018-04-05 16:13:09,538 WARN L151 SmtUtils]: Spent 254ms on a formula simplification. DAG size of input: 46 DAG size of output 33 [2018-04-05 16:13:10,216 WARN L151 SmtUtils]: Spent 104ms on a formula simplification. DAG size of input: 16 DAG size of output 13 [2018-04-05 16:13:10,702 WARN L151 SmtUtils]: Spent 205ms on a formula simplification. DAG size of input: 45 DAG size of output 33 [2018-04-05 16:13:11,460 WARN L151 SmtUtils]: Spent 147ms on a formula simplification. DAG size of input: 35 DAG size of output 33 [2018-04-05 16:13:11,874 WARN L148 SmtUtils]: Spent 137ms on a formula simplification that was a NOOP. DAG size: 22 [2018-04-05 16:13:13,057 WARN L148 SmtUtils]: Spent 310ms on a formula simplification that was a NOOP. DAG size: 28 [2018-04-05 16:13:14,146 WARN L148 SmtUtils]: Spent 260ms on a formula simplification that was a NOOP. DAG size: 33 [2018-04-05 16:13:15,385 WARN L148 SmtUtils]: Spent 356ms on a formula simplification that was a NOOP. DAG size: 41 [2018-04-05 16:13:17,171 WARN L151 SmtUtils]: Spent 362ms on a formula simplification. DAG size of input: 65 DAG size of output 62 [2018-04-05 16:13:17,983 WARN L151 SmtUtils]: Spent 484ms on a formula simplification. DAG size of input: 58 DAG size of output 57 [2018-04-05 16:13:18,892 WARN L151 SmtUtils]: Spent 717ms on a formula simplification. DAG size of input: 73 DAG size of output 59 [2018-04-05 16:13:20,014 WARN L151 SmtUtils]: Spent 755ms on a formula simplification. DAG size of input: 87 DAG size of output 73