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 --cacsl2boogietranslator.bitprecise.bitfields false -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf -i ../../../trunk/examples/svcomp/memsafety/960521-1_false-valid-free.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-666feb3-m [2018-04-11 10:17:22,426 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-04-11 10:17:22,428 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-04-11 10:17:22,441 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-04-11 10:17:22,441 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-04-11 10:17:22,442 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-04-11 10:17:22,443 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-04-11 10:17:22,444 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-04-11 10:17:22,446 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-04-11 10:17:22,446 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-04-11 10:17:22,447 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-04-11 10:17:22,447 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-04-11 10:17:22,448 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-04-11 10:17:22,449 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-04-11 10:17:22,450 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-04-11 10:17:22,451 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-04-11 10:17:22,452 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-04-11 10:17:22,454 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-04-11 10:17:22,455 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-04-11 10:17:22,456 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-04-11 10:17:22,457 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-04-11 10:17:22,458 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-04-11 10:17:22,458 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-04-11 10:17:22,459 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-04-11 10:17:22,459 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-04-11 10:17:22,460 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-04-11 10:17:22,460 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-04-11 10:17:22,461 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-04-11 10:17:22,461 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-04-11 10:17:22,462 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-04-11 10:17:22,462 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-04-11 10:17:22,462 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf [2018-04-11 10:17:22,483 INFO L110 SettingsManager]: Loading preferences was successful [2018-04-11 10:17:22,484 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-04-11 10:17:22,485 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-04-11 10:17:22,485 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-04-11 10:17:22,485 INFO L133 SettingsManager]: * Use SBE=true [2018-04-11 10:17:22,485 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-04-11 10:17:22,485 INFO L133 SettingsManager]: * sizeof long=4 [2018-04-11 10:17:22,485 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-04-11 10:17:22,486 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-04-11 10:17:22,486 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-04-11 10:17:22,486 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-04-11 10:17:22,486 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-04-11 10:17:22,486 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-04-11 10:17:22,486 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-04-11 10:17:22,486 INFO L133 SettingsManager]: * sizeof long double=12 [2018-04-11 10:17:22,487 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-04-11 10:17:22,487 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-04-11 10:17:22,487 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-04-11 10:17:22,487 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-04-11 10:17:22,487 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-11 10:17:22,487 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-04-11 10:17:22,487 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-04-11 10:17:22,488 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-04-11 10:17:22,488 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Bitprecise bitfields -> false [2018-04-11 10:17:22,516 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-04-11 10:17:22,526 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-04-11 10:17:22,531 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-04-11 10:17:22,532 INFO L271 PluginConnector]: Initializing CDTParser... [2018-04-11 10:17:22,533 INFO L276 PluginConnector]: CDTParser initialized [2018-04-11 10:17:22,533 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety/960521-1_false-valid-free.i [2018-04-11 10:17:22,917 INFO L225 CDTParser]: Created temporary CDT project at /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG750bf19c0 [2018-04-11 10:17:23,047 INFO L287 CDTParser]: IsIndexed: true [2018-04-11 10:17:23,047 INFO L288 CDTParser]: Found 1 translation units. [2018-04-11 10:17:23,048 INFO L168 CDTParser]: Scanning 960521-1_false-valid-free.i [2018-04-11 10:17:23,055 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-04-11 10:17:23,056 INFO L215 ultiparseSymbolTable]: [2018-04-11 10:17:23,056 INFO L218 ultiparseSymbolTable]: Function table: [2018-04-11 10:17:23,056 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_f_________false_valid_free_i__foo ('foo') in 960521-1_false-valid-free.i [2018-04-11 10:17:23,056 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in 960521-1_false-valid-free.i [2018-04-11 10:17:23,056 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-04-11 10:17:23,056 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__caddr_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,056 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____rlim_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,056 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__mode_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,056 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__u_int in 960521-1_false-valid-free.i [2018-04-11 10:17:23,057 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__div_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,057 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__pthread_mutex_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,057 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____int32_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,057 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__fsblkcnt_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,057 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____fsfilcnt_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,057 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__pthread_mutexattr_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,057 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____rlim64_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,057 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____suseconds_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,057 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____time_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,057 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____ssize_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,058 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____dev_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,058 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____blksize_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,058 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__int32_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,058 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____qaddr_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,058 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____caddr_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,058 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__fd_set in 960521-1_false-valid-free.i [2018-04-11 10:17:23,058 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____timer_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,058 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____id_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,058 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____blkcnt64_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,058 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__pid_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,058 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__fsfilcnt_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,059 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____u_short in 960521-1_false-valid-free.i [2018-04-11 10:17:23,059 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__key_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,059 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__u_int32_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,059 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____nlink_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,059 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__blkcnt_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,059 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____pthread_list_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,059 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__u_char in 960521-1_false-valid-free.i [2018-04-11 10:17:23,059 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__ulong in 960521-1_false-valid-free.i [2018-04-11 10:17:23,059 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____int16_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,059 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__pthread_once_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,059 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____u_long in 960521-1_false-valid-free.i [2018-04-11 10:17:23,059 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__gid_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,059 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____fsblkcnt64_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,060 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____off64_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,060 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__u_short in 960521-1_false-valid-free.i [2018-04-11 10:17:23,060 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____quad_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,060 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__int16_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,060 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__lldiv_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,060 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____u_char in 960521-1_false-valid-free.i [2018-04-11 10:17:23,060 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____mode_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,060 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__blksize_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,060 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____u_quad_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,060 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__wchar_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,060 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____intptr_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,061 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____uint32_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,061 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__pthread_barrier_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,061 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__size_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,061 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__off_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,061 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__pthread_attr_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,061 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__uid_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,061 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____socklen_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,061 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____clockid_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,061 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__quad_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,061 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____daddr_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,061 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__pthread_spinlock_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,062 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__fsid_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,062 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__u_int16_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,062 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__pthread_cond_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,062 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__int64_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,062 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____key_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,062 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____blkcnt_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,062 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____clock_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,062 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__fd_mask in 960521-1_false-valid-free.i [2018-04-11 10:17:23,062 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__dev_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,062 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____WAIT_STATUS in 960521-1_false-valid-free.i [2018-04-11 10:17:23,062 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__ushort in 960521-1_false-valid-free.i [2018-04-11 10:17:23,063 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__id_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,063 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____uint8_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,063 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__uint in 960521-1_false-valid-free.i [2018-04-11 10:17:23,063 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____sigset_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,063 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__loff_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,063 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____ino_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,063 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____ino64_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,063 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____pid_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,063 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____off_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,063 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____fd_mask in 960521-1_false-valid-free.i [2018-04-11 10:17:23,063 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__pthread_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,063 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____uint16_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,064 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____gid_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,064 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____fsid_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,064 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__nlink_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,064 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__clock_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,064 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__pthread_condattr_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,064 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__pthread_rwlockattr_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,064 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__u_long in 960521-1_false-valid-free.i [2018-04-11 10:17:23,064 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__suseconds_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,064 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__u_int8_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,064 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____loff_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,064 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__daddr_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,064 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____sig_atomic_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,064 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__clockid_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,065 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__timer_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,065 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____int8_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,065 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__pthread_barrierattr_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,065 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__register_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,065 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__sigset_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,065 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____uint64_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,065 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____swblk_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,065 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__u_quad_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,065 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__ldiv_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,065 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____uid_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,065 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__ssize_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,065 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__u_int64_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,066 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____fsblkcnt_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,066 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____int64_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,066 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__int8_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,066 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__n in 960521-1_false-valid-free.i [2018-04-11 10:17:23,066 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____fsfilcnt64_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,066 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__ino_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,066 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____u_int in 960521-1_false-valid-free.i [2018-04-11 10:17:23,066 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____useconds_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,066 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__a in 960521-1_false-valid-free.i [2018-04-11 10:17:23,066 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__b in 960521-1_false-valid-free.i [2018-04-11 10:17:23,067 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__time_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,067 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__pthread_rwlock_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,067 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__pthread_key_t in 960521-1_false-valid-free.i [2018-04-11 10:17:23,081 INFO L330 CDTParser]: Deleted temporary CDT project at /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG750bf19c0 [2018-04-11 10:17:23,085 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-04-11 10:17:23,086 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-04-11 10:17:23,087 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-04-11 10:17:23,087 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-04-11 10:17:23,090 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-04-11 10:17:23,090 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.04 10:17:23" (1/1) ... [2018-04-11 10:17:23,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5867e774 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:17:23, skipping insertion in model container [2018-04-11 10:17:23,092 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.04 10:17:23" (1/1) ... [2018-04-11 10:17:23,102 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-11 10:17:23,124 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-11 10:17:23,245 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-11 10:17:23,273 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-11 10:17:23,279 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 111 non ball SCCs. Number of states in SCCs 111. [2018-04-11 10:17:23,315 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:17:23 WrapperNode [2018-04-11 10:17:23,315 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-04-11 10:17:23,316 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-04-11 10:17:23,316 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-04-11 10:17:23,316 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-04-11 10:17:23,327 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:17:23" (1/1) ... [2018-04-11 10:17:23,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:17:23" (1/1) ... [2018-04-11 10:17:23,340 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:17:23" (1/1) ... [2018-04-11 10:17:23,340 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:17:23" (1/1) ... [2018-04-11 10:17:23,347 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:17:23" (1/1) ... [2018-04-11 10:17:23,351 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:17:23" (1/1) ... [2018-04-11 10:17:23,353 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:17:23" (1/1) ... [2018-04-11 10:17:23,356 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-04-11 10:17:23,356 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-04-11 10:17:23,356 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-04-11 10:17:23,356 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-04-11 10:17:23,357 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:17:23" (1/1) ... No working directory specified, using /home/ultimate/work/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 [2018-04-11 10:17:23,447 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-04-11 10:17:23,447 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-04-11 10:17:23,447 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_________false_valid_free_i__foo [2018-04-11 10:17:23,447 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-04-11 10:17:23,448 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-04-11 10:17:23,448 INFO L128 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-04-11 10:17:23,448 INFO L128 BoogieDeclarations]: Found specification of procedure atof [2018-04-11 10:17:23,448 INFO L128 BoogieDeclarations]: Found specification of procedure atoi [2018-04-11 10:17:23,448 INFO L128 BoogieDeclarations]: Found specification of procedure atol [2018-04-11 10:17:23,448 INFO L128 BoogieDeclarations]: Found specification of procedure atoll [2018-04-11 10:17:23,448 INFO L128 BoogieDeclarations]: Found specification of procedure strtod [2018-04-11 10:17:23,448 INFO L128 BoogieDeclarations]: Found specification of procedure strtof [2018-04-11 10:17:23,448 INFO L128 BoogieDeclarations]: Found specification of procedure strtold [2018-04-11 10:17:23,448 INFO L128 BoogieDeclarations]: Found specification of procedure strtol [2018-04-11 10:17:23,448 INFO L128 BoogieDeclarations]: Found specification of procedure strtoul [2018-04-11 10:17:23,448 INFO L128 BoogieDeclarations]: Found specification of procedure strtoq [2018-04-11 10:17:23,448 INFO L128 BoogieDeclarations]: Found specification of procedure strtouq [2018-04-11 10:17:23,448 INFO L128 BoogieDeclarations]: Found specification of procedure strtoll [2018-04-11 10:17:23,448 INFO L128 BoogieDeclarations]: Found specification of procedure strtoull [2018-04-11 10:17:23,448 INFO L128 BoogieDeclarations]: Found specification of procedure l64a [2018-04-11 10:17:23,449 INFO L128 BoogieDeclarations]: Found specification of procedure a64l [2018-04-11 10:17:23,449 INFO L128 BoogieDeclarations]: Found specification of procedure select [2018-04-11 10:17:23,449 INFO L128 BoogieDeclarations]: Found specification of procedure pselect [2018-04-11 10:17:23,449 INFO L128 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-04-11 10:17:23,449 INFO L128 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-04-11 10:17:23,449 INFO L128 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-04-11 10:17:23,449 INFO L128 BoogieDeclarations]: Found specification of procedure random [2018-04-11 10:17:23,449 INFO L128 BoogieDeclarations]: Found specification of procedure srandom [2018-04-11 10:17:23,449 INFO L128 BoogieDeclarations]: Found specification of procedure initstate [2018-04-11 10:17:23,449 INFO L128 BoogieDeclarations]: Found specification of procedure setstate [2018-04-11 10:17:23,449 INFO L128 BoogieDeclarations]: Found specification of procedure random_r [2018-04-11 10:17:23,449 INFO L128 BoogieDeclarations]: Found specification of procedure srandom_r [2018-04-11 10:17:23,449 INFO L128 BoogieDeclarations]: Found specification of procedure initstate_r [2018-04-11 10:17:23,449 INFO L128 BoogieDeclarations]: Found specification of procedure setstate_r [2018-04-11 10:17:23,449 INFO L128 BoogieDeclarations]: Found specification of procedure rand [2018-04-11 10:17:23,449 INFO L128 BoogieDeclarations]: Found specification of procedure srand [2018-04-11 10:17:23,449 INFO L128 BoogieDeclarations]: Found specification of procedure rand_r [2018-04-11 10:17:23,450 INFO L128 BoogieDeclarations]: Found specification of procedure drand48 [2018-04-11 10:17:23,450 INFO L128 BoogieDeclarations]: Found specification of procedure erand48 [2018-04-11 10:17:23,450 INFO L128 BoogieDeclarations]: Found specification of procedure lrand48 [2018-04-11 10:17:23,450 INFO L128 BoogieDeclarations]: Found specification of procedure nrand48 [2018-04-11 10:17:23,450 INFO L128 BoogieDeclarations]: Found specification of procedure mrand48 [2018-04-11 10:17:23,450 INFO L128 BoogieDeclarations]: Found specification of procedure jrand48 [2018-04-11 10:17:23,450 INFO L128 BoogieDeclarations]: Found specification of procedure srand48 [2018-04-11 10:17:23,450 INFO L128 BoogieDeclarations]: Found specification of procedure seed48 [2018-04-11 10:17:23,450 INFO L128 BoogieDeclarations]: Found specification of procedure lcong48 [2018-04-11 10:17:23,450 INFO L128 BoogieDeclarations]: Found specification of procedure drand48_r [2018-04-11 10:17:23,451 INFO L128 BoogieDeclarations]: Found specification of procedure erand48_r [2018-04-11 10:17:23,451 INFO L128 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-04-11 10:17:23,451 INFO L128 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-04-11 10:17:23,451 INFO L128 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-04-11 10:17:23,451 INFO L128 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-04-11 10:17:23,451 INFO L128 BoogieDeclarations]: Found specification of procedure srand48_r [2018-04-11 10:17:23,451 INFO L128 BoogieDeclarations]: Found specification of procedure seed48_r [2018-04-11 10:17:23,451 INFO L128 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-04-11 10:17:23,451 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-04-11 10:17:23,451 INFO L128 BoogieDeclarations]: Found specification of procedure calloc [2018-04-11 10:17:23,452 INFO L128 BoogieDeclarations]: Found specification of procedure realloc [2018-04-11 10:17:23,452 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-04-11 10:17:23,452 INFO L128 BoogieDeclarations]: Found specification of procedure cfree [2018-04-11 10:17:23,452 INFO L128 BoogieDeclarations]: Found specification of procedure alloca [2018-04-11 10:17:23,452 INFO L128 BoogieDeclarations]: Found specification of procedure valloc [2018-04-11 10:17:23,452 INFO L128 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-04-11 10:17:23,452 INFO L128 BoogieDeclarations]: Found specification of procedure abort [2018-04-11 10:17:23,452 INFO L128 BoogieDeclarations]: Found specification of procedure atexit [2018-04-11 10:17:23,452 INFO L128 BoogieDeclarations]: Found specification of procedure on_exit [2018-04-11 10:17:23,452 INFO L128 BoogieDeclarations]: Found specification of procedure exit [2018-04-11 10:17:23,453 INFO L128 BoogieDeclarations]: Found specification of procedure _Exit [2018-04-11 10:17:23,453 INFO L128 BoogieDeclarations]: Found specification of procedure getenv [2018-04-11 10:17:23,453 INFO L128 BoogieDeclarations]: Found specification of procedure __secure_getenv [2018-04-11 10:17:23,453 INFO L128 BoogieDeclarations]: Found specification of procedure putenv [2018-04-11 10:17:23,453 INFO L128 BoogieDeclarations]: Found specification of procedure setenv [2018-04-11 10:17:23,453 INFO L128 BoogieDeclarations]: Found specification of procedure unsetenv [2018-04-11 10:17:23,453 INFO L128 BoogieDeclarations]: Found specification of procedure clearenv [2018-04-11 10:17:23,453 INFO L128 BoogieDeclarations]: Found specification of procedure mktemp [2018-04-11 10:17:23,453 INFO L128 BoogieDeclarations]: Found specification of procedure mkstemp [2018-04-11 10:17:23,453 INFO L128 BoogieDeclarations]: Found specification of procedure mkstemps [2018-04-11 10:17:23,454 INFO L128 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-04-11 10:17:23,454 INFO L128 BoogieDeclarations]: Found specification of procedure system [2018-04-11 10:17:23,454 INFO L128 BoogieDeclarations]: Found specification of procedure realpath [2018-04-11 10:17:23,454 INFO L128 BoogieDeclarations]: Found specification of procedure bsearch [2018-04-11 10:17:23,454 INFO L128 BoogieDeclarations]: Found specification of procedure qsort [2018-04-11 10:17:23,454 INFO L128 BoogieDeclarations]: Found specification of procedure abs [2018-04-11 10:17:23,454 INFO L128 BoogieDeclarations]: Found specification of procedure labs [2018-04-11 10:17:23,454 INFO L128 BoogieDeclarations]: Found specification of procedure llabs [2018-04-11 10:17:23,454 INFO L128 BoogieDeclarations]: Found specification of procedure div [2018-04-11 10:17:23,454 INFO L128 BoogieDeclarations]: Found specification of procedure ldiv [2018-04-11 10:17:23,455 INFO L128 BoogieDeclarations]: Found specification of procedure lldiv [2018-04-11 10:17:23,455 INFO L128 BoogieDeclarations]: Found specification of procedure ecvt [2018-04-11 10:17:23,455 INFO L128 BoogieDeclarations]: Found specification of procedure fcvt [2018-04-11 10:17:23,455 INFO L128 BoogieDeclarations]: Found specification of procedure gcvt [2018-04-11 10:17:23,455 INFO L128 BoogieDeclarations]: Found specification of procedure qecvt [2018-04-11 10:17:23,455 INFO L128 BoogieDeclarations]: Found specification of procedure qfcvt [2018-04-11 10:17:23,455 INFO L128 BoogieDeclarations]: Found specification of procedure qgcvt [2018-04-11 10:17:23,455 INFO L128 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-04-11 10:17:23,455 INFO L128 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-04-11 10:17:23,455 INFO L128 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-04-11 10:17:23,456 INFO L128 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-04-11 10:17:23,456 INFO L128 BoogieDeclarations]: Found specification of procedure mblen [2018-04-11 10:17:23,456 INFO L128 BoogieDeclarations]: Found specification of procedure mbtowc [2018-04-11 10:17:23,456 INFO L128 BoogieDeclarations]: Found specification of procedure wctomb [2018-04-11 10:17:23,456 INFO L128 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-04-11 10:17:23,456 INFO L128 BoogieDeclarations]: Found specification of procedure wcstombs [2018-04-11 10:17:23,456 INFO L128 BoogieDeclarations]: Found specification of procedure rpmatch [2018-04-11 10:17:23,456 INFO L128 BoogieDeclarations]: Found specification of procedure getsubopt [2018-04-11 10:17:23,456 INFO L128 BoogieDeclarations]: Found specification of procedure getloadavg [2018-04-11 10:17:23,456 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_________false_valid_free_i__foo [2018-04-11 10:17:23,457 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-04-11 10:17:23,457 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-04-11 10:17:23,457 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-04-11 10:17:23,457 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-04-11 10:17:23,457 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-04-11 10:17:23,457 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-04-11 10:17:23,457 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-04-11 10:17:23,457 INFO L128 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-04-11 10:17:23,732 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-04-11 10:17:23,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.04 10:17:23 BoogieIcfgContainer [2018-04-11 10:17:23,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-04-11 10:17:23,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-04-11 10:17:23,733 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-04-11 10:17:23,735 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-04-11 10:17:23,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.04 10:17:23" (1/3) ... [2018-04-11 10:17:23,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6da2cdf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.04 10:17:23, skipping insertion in model container [2018-04-11 10:17:23,735 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.04 10:17:23" (2/3) ... [2018-04-11 10:17:23,735 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6da2cdf1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.04 10:17:23, skipping insertion in model container [2018-04-11 10:17:23,736 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.04 10:17:23" (3/3) ... [2018-04-11 10:17:23,737 INFO L107 eAbstractionObserver]: Analyzing ICFG 960521-1_false-valid-free.i [2018-04-11 10:17:23,742 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-04-11 10:17:23,748 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2018-04-11 10:17:23,779 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-04-11 10:17:23,779 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-04-11 10:17:23,779 INFO L370 AbstractCegarLoop]: Hoare is false [2018-04-11 10:17:23,779 INFO L371 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-04-11 10:17:23,779 INFO L372 AbstractCegarLoop]: Backedges is TWOTRACK [2018-04-11 10:17:23,780 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-04-11 10:17:23,780 INFO L374 AbstractCegarLoop]: Difference is false [2018-04-11 10:17:23,780 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-04-11 10:17:23,780 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-04-11 10:17:23,780 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-04-11 10:17:23,787 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2018-04-11 10:17:23,792 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-04-11 10:17:23,792 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 10:17:23,792 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 10:17:23,793 INFO L408 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-11 10:17:23,795 INFO L82 PathProgramCache]: Analyzing trace with hash 516560539, now seen corresponding path program 1 times [2018-04-11 10:17:23,796 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 10:17:23,796 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 10:17:23,824 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:17:23,824 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 10:17:23,824 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:17:23,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 10:17:23,866 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 10:17:23,906 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 10:17:23,908 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-11 10:17:23,908 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-04-11 10:17:23,910 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-04-11 10:17:23,921 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-04-11 10:17:23,922 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-04-11 10:17:23,924 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 4 states. [2018-04-11 10:17:24,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 10:17:24,001 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2018-04-11 10:17:24,002 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-04-11 10:17:24,003 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-04-11 10:17:24,003 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 10:17:24,011 INFO L225 Difference]: With dead ends: 60 [2018-04-11 10:17:24,011 INFO L226 Difference]: Without dead ends: 57 [2018-04-11 10:17:24,012 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-04-11 10:17:24,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-04-11 10:17:24,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-04-11 10:17:24,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-04-11 10:17:24,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2018-04-11 10:17:24,041 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 11 [2018-04-11 10:17:24,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 10:17:24,041 INFO L459 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2018-04-11 10:17:24,041 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-04-11 10:17:24,041 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2018-04-11 10:17:24,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-04-11 10:17:24,042 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 10:17:24,042 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 10:17:24,042 INFO L408 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-11 10:17:24,042 INFO L82 PathProgramCache]: Analyzing trace with hash 516560540, now seen corresponding path program 1 times [2018-04-11 10:17:24,042 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 10:17:24,043 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 10:17:24,043 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:17:24,043 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 10:17:24,044 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:17:24,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 10:17:24,056 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 10:17:24,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 10:17:24,111 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-11 10:17:24,111 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-04-11 10:17:24,112 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-04-11 10:17:24,112 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-04-11 10:17:24,112 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-04-11 10:17:24,112 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 5 states. [2018-04-11 10:17:24,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 10:17:24,151 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2018-04-11 10:17:24,151 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-04-11 10:17:24,151 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-04-11 10:17:24,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 10:17:24,152 INFO L225 Difference]: With dead ends: 56 [2018-04-11 10:17:24,152 INFO L226 Difference]: Without dead ends: 56 [2018-04-11 10:17:24,152 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-04-11 10:17:24,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-04-11 10:17:24,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-04-11 10:17:24,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-04-11 10:17:24,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2018-04-11 10:17:24,156 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 11 [2018-04-11 10:17:24,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 10:17:24,156 INFO L459 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2018-04-11 10:17:24,156 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-04-11 10:17:24,156 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2018-04-11 10:17:24,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-04-11 10:17:24,157 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 10:17:24,157 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 10:17:24,158 INFO L408 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-11 10:17:24,159 INFO L82 PathProgramCache]: Analyzing trace with hash 1337247429, now seen corresponding path program 1 times [2018-04-11 10:17:24,159 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 10:17:24,159 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 10:17:24,159 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:17:24,160 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 10:17:24,160 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:17:24,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 10:17:24,171 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 10:17:24,248 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 10:17:24,249 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-11 10:17:24,249 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-04-11 10:17:24,249 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-04-11 10:17:24,249 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-04-11 10:17:24,250 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-04-11 10:17:24,250 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 6 states. [2018-04-11 10:17:24,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 10:17:24,322 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2018-04-11 10:17:24,322 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-04-11 10:17:24,323 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2018-04-11 10:17:24,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 10:17:24,324 INFO L225 Difference]: With dead ends: 53 [2018-04-11 10:17:24,324 INFO L226 Difference]: Without dead ends: 53 [2018-04-11 10:17:24,324 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-04-11 10:17:24,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-04-11 10:17:24,327 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-04-11 10:17:24,327 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-04-11 10:17:24,328 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2018-04-11 10:17:24,329 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 17 [2018-04-11 10:17:24,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 10:17:24,329 INFO L459 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2018-04-11 10:17:24,329 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-04-11 10:17:24,329 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2018-04-11 10:17:24,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-04-11 10:17:24,332 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 10:17:24,332 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 10:17:24,332 INFO L408 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-11 10:17:24,332 INFO L82 PathProgramCache]: Analyzing trace with hash 1337247430, now seen corresponding path program 1 times [2018-04-11 10:17:24,332 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 10:17:24,332 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 10:17:24,333 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:17:24,333 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 10:17:24,333 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:17:24,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 10:17:24,348 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 10:17:24,431 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 10:17:24,431 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-11 10:17:24,431 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-04-11 10:17:24,432 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-04-11 10:17:24,432 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-04-11 10:17:24,432 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-04-11 10:17:24,432 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 7 states. [2018-04-11 10:17:24,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 10:17:24,505 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2018-04-11 10:17:24,505 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-04-11 10:17:24,505 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2018-04-11 10:17:24,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 10:17:24,506 INFO L225 Difference]: With dead ends: 61 [2018-04-11 10:17:24,506 INFO L226 Difference]: Without dead ends: 61 [2018-04-11 10:17:24,506 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-04-11 10:17:24,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-04-11 10:17:24,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2018-04-11 10:17:24,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-04-11 10:17:24,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2018-04-11 10:17:24,508 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 17 [2018-04-11 10:17:24,509 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 10:17:24,509 INFO L459 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2018-04-11 10:17:24,509 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-04-11 10:17:24,509 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2018-04-11 10:17:24,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-04-11 10:17:24,509 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 10:17:24,509 INFO L355 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 10:17:24,509 INFO L408 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-11 10:17:24,509 INFO L82 PathProgramCache]: Analyzing trace with hash 1186083357, now seen corresponding path program 1 times [2018-04-11 10:17:24,509 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 10:17:24,509 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 10:17:24,510 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:17:24,510 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 10:17:24,510 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:17:24,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 10:17:24,521 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 10:17:24,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 10:17:24,647 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 10:17:24,647 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-11 10:17:24,654 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 10:17:24,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 10:17:24,680 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 10:17:24,705 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 [2018-04-11 10:17:24,706 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 10:17:24,710 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 10:17:24,710 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:14 [2018-04-11 10:17:24,721 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 16 treesize of output 15 [2018-04-11 10:17:24,722 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 10:17:24,734 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. [2018-04-11 10:17:24,734 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:21 [2018-04-11 10:17:24,813 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 10:17:24,843 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 10:17:24,843 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 11 [2018-04-11 10:17:24,844 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-04-11 10:17:24,844 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-04-11 10:17:24,844 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2018-04-11 10:17:24,844 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 12 states. [2018-04-11 10:17:25,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 10:17:25,053 INFO L93 Difference]: Finished difference Result 71 states and 73 transitions. [2018-04-11 10:17:25,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-04-11 10:17:25,054 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2018-04-11 10:17:25,054 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 10:17:25,054 INFO L225 Difference]: With dead ends: 71 [2018-04-11 10:17:25,055 INFO L226 Difference]: Without dead ends: 71 [2018-04-11 10:17:25,055 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2018-04-11 10:17:25,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-04-11 10:17:25,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 64. [2018-04-11 10:17:25,057 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-04-11 10:17:25,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2018-04-11 10:17:25,058 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 21 [2018-04-11 10:17:25,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 10:17:25,058 INFO L459 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2018-04-11 10:17:25,058 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-04-11 10:17:25,058 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2018-04-11 10:17:25,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-04-11 10:17:25,058 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 10:17:25,058 INFO L355 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 10:17:25,059 INFO L408 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-11 10:17:25,059 INFO L82 PathProgramCache]: Analyzing trace with hash 1607211508, now seen corresponding path program 2 times [2018-04-11 10:17:25,059 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 10:17:25,059 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 10:17:25,060 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:17:25,060 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 10:17:25,060 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:17:25,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 10:17:25,072 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 10:17:25,211 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 10:17:25,211 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 10:17:25,211 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-11 10:17:25,217 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-11 10:17:25,230 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-11 10:17:25,230 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-11 10:17:25,232 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 10:17:25,235 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 [2018-04-11 10:17:25,236 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 10:17:25,240 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 [2018-04-11 10:17:25,240 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 10:17:25,244 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 10:17:25,244 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:19 [2018-04-11 10:17:25,267 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 10:17:25,267 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 10:17:25,268 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 [2018-04-11 10:17:25,268 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 10:17:25,276 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 16 treesize of output 19 [2018-04-11 10:17:25,276 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 10:17:25,282 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-04-11 10:17:25,282 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:32, output treesize:25 [2018-04-11 10:17:25,386 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 10:17:25,402 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 10:17:25,403 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2018-04-11 10:17:25,403 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-04-11 10:17:25,403 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-04-11 10:17:25,403 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2018-04-11 10:17:25,403 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 17 states. [2018-04-11 10:17:25,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 10:17:25,839 INFO L93 Difference]: Finished difference Result 81 states and 83 transitions. [2018-04-11 10:17:25,840 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-04-11 10:17:25,840 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2018-04-11 10:17:25,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 10:17:25,841 INFO L225 Difference]: With dead ends: 81 [2018-04-11 10:17:25,841 INFO L226 Difference]: Without dead ends: 81 [2018-04-11 10:17:25,841 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2018-04-11 10:17:25,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-04-11 10:17:25,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 72. [2018-04-11 10:17:25,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-04-11 10:17:25,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 78 transitions. [2018-04-11 10:17:25,845 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 78 transitions. Word has length 25 [2018-04-11 10:17:25,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 10:17:25,845 INFO L459 AbstractCegarLoop]: Abstraction has 72 states and 78 transitions. [2018-04-11 10:17:25,846 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-04-11 10:17:25,846 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 78 transitions. [2018-04-11 10:17:25,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-04-11 10:17:25,846 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 10:17:25,846 INFO L355 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 10:17:25,846 INFO L408 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-11 10:17:25,847 INFO L82 PathProgramCache]: Analyzing trace with hash 124796491, now seen corresponding path program 3 times [2018-04-11 10:17:25,847 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 10:17:25,847 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 10:17:25,847 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:17:25,847 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-11 10:17:25,848 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:17:25,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 10:17:25,859 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 10:17:26,015 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 10:17:26,015 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 10:17:26,016 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-11 10:17:26,021 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-04-11 10:17:26,042 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-04-11 10:17:26,042 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-11 10:17:26,045 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 10:17:26,048 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 [2018-04-11 10:17:26,048 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 10:17:26,051 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 [2018-04-11 10:17:26,051 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 10:17:26,054 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 10:17:26,054 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:18, output treesize:16 [2018-04-11 10:17:26,080 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 10:17:26,081 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 16 treesize of output 19 [2018-04-11 10:17:26,081 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 10:17:26,089 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 10:17:26,090 INFO L700 Elim1Store]: detected not equals via solver [2018-04-11 10:17:26,090 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 [2018-04-11 10:17:26,090 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-11 10:17:26,094 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 10:17:26,094 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:29, output treesize:22 [2018-04-11 10:17:26,212 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-04-11 10:17:26,241 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 10:17:26,241 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 17 [2018-04-11 10:17:26,241 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-04-11 10:17:26,241 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-04-11 10:17:26,242 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2018-04-11 10:17:26,242 INFO L87 Difference]: Start difference. First operand 72 states and 78 transitions. Second operand 18 states. [2018-04-11 10:17:26,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 10:17:26,925 INFO L93 Difference]: Finished difference Result 98 states and 102 transitions. [2018-04-11 10:17:26,925 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-04-11 10:17:26,926 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 29 [2018-04-11 10:17:26,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 10:17:26,928 INFO L225 Difference]: With dead ends: 98 [2018-04-11 10:17:26,928 INFO L226 Difference]: Without dead ends: 98 [2018-04-11 10:17:26,928 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2018-04-11 10:17:26,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-04-11 10:17:26,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 78. [2018-04-11 10:17:26,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-04-11 10:17:26,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2018-04-11 10:17:26,932 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 29 [2018-04-11 10:17:26,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 10:17:26,932 INFO L459 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2018-04-11 10:17:26,932 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-04-11 10:17:26,934 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2018-04-11 10:17:26,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-04-11 10:17:26,935 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 10:17:26,935 INFO L355 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 10:17:26,935 INFO L408 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-11 10:17:26,935 INFO L82 PathProgramCache]: Analyzing trace with hash 1358308887, now seen corresponding path program 1 times [2018-04-11 10:17:26,935 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 10:17:26,935 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 10:17:26,936 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:17:26,936 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-11 10:17:26,936 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:17:26,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 10:17:26,947 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 10:17:26,997 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-04-11 10:17:26,997 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-11 10:17:26,997 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-04-11 10:17:26,997 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-04-11 10:17:26,998 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-04-11 10:17:26,998 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-04-11 10:17:26,998 INFO L87 Difference]: Start difference. First operand 78 states and 84 transitions. Second operand 4 states. [2018-04-11 10:17:27,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 10:17:27,027 INFO L93 Difference]: Finished difference Result 76 states and 80 transitions. [2018-04-11 10:17:27,027 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-04-11 10:17:27,027 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2018-04-11 10:17:27,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 10:17:27,028 INFO L225 Difference]: With dead ends: 76 [2018-04-11 10:17:27,028 INFO L226 Difference]: Without dead ends: 76 [2018-04-11 10:17:27,028 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-04-11 10:17:27,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-04-11 10:17:27,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-04-11 10:17:27,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-04-11 10:17:27,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2018-04-11 10:17:27,032 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 40 [2018-04-11 10:17:27,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 10:17:27,033 INFO L459 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2018-04-11 10:17:27,033 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-04-11 10:17:27,033 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2018-04-11 10:17:27,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-04-11 10:17:27,033 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 10:17:27,034 INFO L355 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 10:17:27,034 INFO L408 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-11 10:17:27,034 INFO L82 PathProgramCache]: Analyzing trace with hash 1358308888, now seen corresponding path program 1 times [2018-04-11 10:17:27,034 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 10:17:27,034 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 10:17:27,035 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:17:27,035 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 10:17:27,035 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:17:27,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 10:17:27,045 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 10:17:27,106 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 10:17:27,106 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 10:17:27,106 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-11 10:17:27,115 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 10:17:27,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 10:17:27,140 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 10:17:27,196 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 10:17:27,215 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 10:17:27,215 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2018-04-11 10:17:27,215 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-04-11 10:17:27,215 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-04-11 10:17:27,215 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=120, Unknown=0, NotChecked=0, Total=210 [2018-04-11 10:17:27,215 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand 15 states. [2018-04-11 10:17:27,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 10:17:27,290 INFO L93 Difference]: Finished difference Result 102 states and 104 transitions. [2018-04-11 10:17:27,290 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-04-11 10:17:27,290 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40 [2018-04-11 10:17:27,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 10:17:27,291 INFO L225 Difference]: With dead ends: 102 [2018-04-11 10:17:27,291 INFO L226 Difference]: Without dead ends: 102 [2018-04-11 10:17:27,291 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=90, Invalid=120, Unknown=0, NotChecked=0, Total=210 [2018-04-11 10:17:27,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-04-11 10:17:27,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 92. [2018-04-11 10:17:27,294 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-04-11 10:17:27,295 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 99 transitions. [2018-04-11 10:17:27,295 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 99 transitions. Word has length 40 [2018-04-11 10:17:27,295 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 10:17:27,295 INFO L459 AbstractCegarLoop]: Abstraction has 92 states and 99 transitions. [2018-04-11 10:17:27,295 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-04-11 10:17:27,295 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 99 transitions. [2018-04-11 10:17:27,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-04-11 10:17:27,296 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 10:17:27,296 INFO L355 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 10:17:27,296 INFO L408 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-11 10:17:27,296 INFO L82 PathProgramCache]: Analyzing trace with hash 412608737, now seen corresponding path program 2 times [2018-04-11 10:17:27,296 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 10:17:27,296 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 10:17:27,297 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:17:27,297 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 10:17:27,297 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:17:27,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 10:17:27,305 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 10:17:27,369 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 10:17:27,370 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 10:17:27,370 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-11 10:17:27,375 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-11 10:17:27,399 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-04-11 10:17:27,399 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-11 10:17:27,401 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 10:17:27,420 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 [2018-04-11 10:17:27,420 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 10:17:27,425 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. [2018-04-11 10:17:27,425 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:14 [2018-04-11 10:17:27,537 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-04-11 10:17:27,564 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-04-11 10:17:27,564 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2018-04-11 10:17:27,565 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-04-11 10:17:27,565 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-04-11 10:17:27,565 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2018-04-11 10:17:27,565 INFO L87 Difference]: Start difference. First operand 92 states and 99 transitions. Second operand 15 states. [2018-04-11 10:17:27,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 10:17:27,946 INFO L93 Difference]: Finished difference Result 95 states and 97 transitions. [2018-04-11 10:17:27,946 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-04-11 10:17:27,946 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2018-04-11 10:17:27,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 10:17:27,947 INFO L225 Difference]: With dead ends: 95 [2018-04-11 10:17:27,947 INFO L226 Difference]: Without dead ends: 95 [2018-04-11 10:17:27,948 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=294, Invalid=828, Unknown=0, NotChecked=0, Total=1122 [2018-04-11 10:17:27,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-04-11 10:17:27,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 85. [2018-04-11 10:17:27,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-04-11 10:17:27,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2018-04-11 10:17:27,951 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 44 [2018-04-11 10:17:27,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 10:17:27,951 INFO L459 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2018-04-11 10:17:27,951 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-04-11 10:17:27,951 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2018-04-11 10:17:27,952 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-04-11 10:17:27,952 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 10:17:27,952 INFO L355 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 10:17:27,952 INFO L408 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-11 10:17:27,952 INFO L82 PathProgramCache]: Analyzing trace with hash 568412717, now seen corresponding path program 1 times [2018-04-11 10:17:27,952 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 10:17:27,952 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 10:17:27,952 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:17:27,952 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-11 10:17:27,953 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:17:27,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 10:17:27,966 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 10:17:28,059 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-04-11 10:17:28,060 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 10:17:28,060 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-11 10:17:28,065 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 10:17:28,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 10:17:28,091 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 10:17:28,157 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-04-11 10:17:28,174 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 10:17:28,175 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2018-04-11 10:17:28,175 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-04-11 10:17:28,175 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-04-11 10:17:28,175 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=244, Unknown=0, NotChecked=0, Total=380 [2018-04-11 10:17:28,175 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand 20 states. [2018-04-11 10:17:28,285 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 10:17:28,285 INFO L93 Difference]: Finished difference Result 101 states and 102 transitions. [2018-04-11 10:17:28,287 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-04-11 10:17:28,287 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 79 [2018-04-11 10:17:28,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 10:17:28,288 INFO L225 Difference]: With dead ends: 101 [2018-04-11 10:17:28,288 INFO L226 Difference]: Without dead ends: 101 [2018-04-11 10:17:28,288 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=155, Invalid=265, Unknown=0, NotChecked=0, Total=420 [2018-04-11 10:17:28,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-04-11 10:17:28,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 97. [2018-04-11 10:17:28,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-04-11 10:17:28,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2018-04-11 10:17:28,292 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 79 [2018-04-11 10:17:28,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 10:17:28,292 INFO L459 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2018-04-11 10:17:28,292 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-04-11 10:17:28,292 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2018-04-11 10:17:28,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-04-11 10:17:28,293 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 10:17:28,294 INFO L355 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 10:17:28,294 INFO L408 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-11 10:17:28,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1423474090, now seen corresponding path program 2 times [2018-04-11 10:17:28,294 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 10:17:28,294 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 10:17:28,295 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:17:28,295 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 10:17:28,295 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:17:28,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 10:17:28,310 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 10:17:28,390 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-04-11 10:17:28,390 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 10:17:28,390 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-11 10:17:28,403 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-11 10:17:28,433 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-11 10:17:28,433 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-11 10:17:28,437 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 10:17:28,513 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-04-11 10:17:28,530 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 10:17:28,530 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2018-04-11 10:17:28,530 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-04-11 10:17:28,530 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-04-11 10:17:28,530 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=296, Unknown=0, NotChecked=0, Total=462 [2018-04-11 10:17:28,530 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand 22 states. [2018-04-11 10:17:28,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 10:17:28,613 INFO L93 Difference]: Finished difference Result 109 states and 110 transitions. [2018-04-11 10:17:28,614 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-04-11 10:17:28,614 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 91 [2018-04-11 10:17:28,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 10:17:28,615 INFO L225 Difference]: With dead ends: 109 [2018-04-11 10:17:28,615 INFO L226 Difference]: Without dead ends: 109 [2018-04-11 10:17:28,615 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=187, Invalid=319, Unknown=0, NotChecked=0, Total=506 [2018-04-11 10:17:28,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-04-11 10:17:28,617 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 105. [2018-04-11 10:17:28,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-04-11 10:17:28,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2018-04-11 10:17:28,619 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 91 [2018-04-11 10:17:28,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 10:17:28,620 INFO L459 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2018-04-11 10:17:28,620 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-04-11 10:17:28,620 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2018-04-11 10:17:28,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-04-11 10:17:28,621 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 10:17:28,621 INFO L355 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 10:17:28,621 INFO L408 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-11 10:17:28,621 INFO L82 PathProgramCache]: Analyzing trace with hash -1022800842, now seen corresponding path program 3 times [2018-04-11 10:17:28,621 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 10:17:28,622 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 10:17:28,622 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:17:28,622 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-11 10:17:28,622 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:17:28,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 10:17:28,638 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 10:17:28,834 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2018-04-11 10:17:28,834 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 10:17:28,834 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-11 10:17:28,840 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-04-11 10:17:28,919 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-04-11 10:17:28,919 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-11 10:17:28,922 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 10:17:28,942 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2018-04-11 10:17:28,966 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 10:17:28,966 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 15 [2018-04-11 10:17:28,966 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-04-11 10:17:28,966 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-04-11 10:17:28,967 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2018-04-11 10:17:28,967 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand 15 states. [2018-04-11 10:17:29,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 10:17:29,064 INFO L93 Difference]: Finished difference Result 117 states and 118 transitions. [2018-04-11 10:17:29,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-04-11 10:17:29,064 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 99 [2018-04-11 10:17:29,064 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 10:17:29,064 INFO L225 Difference]: With dead ends: 117 [2018-04-11 10:17:29,064 INFO L226 Difference]: Without dead ends: 117 [2018-04-11 10:17:29,065 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=213, Invalid=387, Unknown=0, NotChecked=0, Total=600 [2018-04-11 10:17:29,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-04-11 10:17:29,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 113. [2018-04-11 10:17:29,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-04-11 10:17:29,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2018-04-11 10:17:29,067 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 99 [2018-04-11 10:17:29,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 10:17:29,067 INFO L459 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions. [2018-04-11 10:17:29,067 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-04-11 10:17:29,067 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions. [2018-04-11 10:17:29,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-04-11 10:17:29,068 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 10:17:29,068 INFO L355 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 10:17:29,068 INFO L408 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-11 10:17:29,068 INFO L82 PathProgramCache]: Analyzing trace with hash 282730262, now seen corresponding path program 4 times [2018-04-11 10:17:29,068 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 10:17:29,068 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 10:17:29,068 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:17:29,068 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-11 10:17:29,068 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:17:29,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 10:17:29,080 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 10:17:29,176 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-04-11 10:17:29,176 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 10:17:29,176 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-11 10:17:29,181 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-04-11 10:17:29,200 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-04-11 10:17:29,200 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-11 10:17:29,203 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 10:17:29,208 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 [2018-04-11 10:17:29,208 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 10:17:29,209 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 10:17:29,209 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:8, output treesize:7 [2018-04-11 10:17:29,476 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 18 treesize of output 10 [2018-04-11 10:17:29,476 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 10:17:29,479 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-04-11 10:17:29,479 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:24, output treesize:17 [2018-04-11 10:17:29,515 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 171 proven. 229 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 10:17:29,532 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 10:17:29,532 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 28] total 41 [2018-04-11 10:17:29,532 INFO L442 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-04-11 10:17:29,533 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-04-11 10:17:29,533 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=346, Invalid=1294, Unknown=0, NotChecked=0, Total=1640 [2018-04-11 10:17:29,533 INFO L87 Difference]: Start difference. First operand 113 states and 114 transitions. Second operand 41 states. [2018-04-11 10:17:29,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 10:17:29,825 INFO L93 Difference]: Finished difference Result 125 states and 126 transitions. [2018-04-11 10:17:29,825 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-04-11 10:17:29,825 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 107 [2018-04-11 10:17:29,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 10:17:29,826 INFO L225 Difference]: With dead ends: 125 [2018-04-11 10:17:29,826 INFO L226 Difference]: Without dead ends: 125 [2018-04-11 10:17:29,827 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=613, Invalid=2579, Unknown=0, NotChecked=0, Total=3192 [2018-04-11 10:17:29,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-04-11 10:17:29,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 121. [2018-04-11 10:17:29,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-04-11 10:17:29,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2018-04-11 10:17:29,828 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 107 [2018-04-11 10:17:29,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 10:17:29,828 INFO L459 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2018-04-11 10:17:29,828 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-04-11 10:17:29,829 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2018-04-11 10:17:29,829 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-04-11 10:17:29,829 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 10:17:29,829 INFO L355 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 10:17:29,829 INFO L408 AbstractCegarLoop]: === Iteration 15 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-11 10:17:29,830 INFO L82 PathProgramCache]: Analyzing trace with hash 233077494, now seen corresponding path program 5 times [2018-04-11 10:17:29,830 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 10:17:29,830 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 10:17:29,830 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:17:29,830 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-11 10:17:29,830 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:17:29,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 10:17:29,840 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 10:17:29,987 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2018-04-11 10:17:29,987 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 10:17:29,987 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-11 10:17:29,992 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-04-11 10:17:30,908 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-04-11 10:17:30,908 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-11 10:17:30,912 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 10:17:30,924 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2018-04-11 10:17:30,941 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 10:17:30,942 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 17 [2018-04-11 10:17:30,942 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-04-11 10:17:30,942 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-04-11 10:17:30,942 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=163, Unknown=0, NotChecked=0, Total=272 [2018-04-11 10:17:30,942 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand 17 states. [2018-04-11 10:17:31,063 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 10:17:31,063 INFO L93 Difference]: Finished difference Result 133 states and 134 transitions. [2018-04-11 10:17:31,063 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-04-11 10:17:31,063 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 115 [2018-04-11 10:17:31,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 10:17:31,064 INFO L225 Difference]: With dead ends: 133 [2018-04-11 10:17:31,064 INFO L226 Difference]: Without dead ends: 133 [2018-04-11 10:17:31,064 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=290, Invalid=522, Unknown=0, NotChecked=0, Total=812 [2018-04-11 10:17:31,064 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-04-11 10:17:31,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 129. [2018-04-11 10:17:31,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-04-11 10:17:31,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 130 transitions. [2018-04-11 10:17:31,066 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 130 transitions. Word has length 115 [2018-04-11 10:17:31,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 10:17:31,067 INFO L459 AbstractCegarLoop]: Abstraction has 129 states and 130 transitions. [2018-04-11 10:17:31,067 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-04-11 10:17:31,067 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 130 transitions. [2018-04-11 10:17:31,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-04-11 10:17:31,068 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 10:17:31,068 INFO L355 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 10:17:31,068 INFO L408 AbstractCegarLoop]: === Iteration 16 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-11 10:17:31,069 INFO L82 PathProgramCache]: Analyzing trace with hash -1556946986, now seen corresponding path program 6 times [2018-04-11 10:17:31,069 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 10:17:31,069 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 10:17:31,069 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:17:31,069 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-11 10:17:31,070 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:17:31,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 10:17:31,087 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 10:17:31,258 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2018-04-11 10:17:31,258 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 10:17:31,258 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-11 10:17:31,270 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-04-11 10:17:31,586 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-04-11 10:17:31,586 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-11 10:17:31,589 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 10:17:31,632 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2018-04-11 10:17:31,651 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 10:17:31,651 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 18 [2018-04-11 10:17:31,651 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-04-11 10:17:31,651 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-04-11 10:17:31,652 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=182, Unknown=0, NotChecked=0, Total=306 [2018-04-11 10:17:31,652 INFO L87 Difference]: Start difference. First operand 129 states and 130 transitions. Second operand 18 states. [2018-04-11 10:17:31,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 10:17:31,786 INFO L93 Difference]: Finished difference Result 141 states and 142 transitions. [2018-04-11 10:17:31,786 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-04-11 10:17:31,786 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 123 [2018-04-11 10:17:31,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 10:17:31,786 INFO L225 Difference]: With dead ends: 141 [2018-04-11 10:17:31,786 INFO L226 Difference]: Without dead ends: 141 [2018-04-11 10:17:31,787 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=333, Invalid=597, Unknown=0, NotChecked=0, Total=930 [2018-04-11 10:17:31,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-04-11 10:17:31,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 137. [2018-04-11 10:17:31,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-04-11 10:17:31,789 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 138 transitions. [2018-04-11 10:17:31,789 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 138 transitions. Word has length 123 [2018-04-11 10:17:31,790 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 10:17:31,790 INFO L459 AbstractCegarLoop]: Abstraction has 137 states and 138 transitions. [2018-04-11 10:17:31,790 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-04-11 10:17:31,790 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 138 transitions. [2018-04-11 10:17:31,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-04-11 10:17:31,791 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 10:17:31,791 INFO L355 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 10:17:31,791 INFO L408 AbstractCegarLoop]: === Iteration 17 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-11 10:17:31,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1234161078, now seen corresponding path program 7 times [2018-04-11 10:17:31,791 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 10:17:31,791 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 10:17:31,792 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:17:31,792 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-11 10:17:31,792 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:17:31,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 10:17:31,810 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 10:17:31,952 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2018-04-11 10:17:31,952 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 10:17:31,952 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-11 10:17:31,959 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 10:17:31,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 10:17:31,982 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 10:17:32,085 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2018-04-11 10:17:32,102 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 10:17:32,102 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 32 [2018-04-11 10:17:32,102 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-04-11 10:17:32,102 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-04-11 10:17:32,102 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=361, Invalid=631, Unknown=0, NotChecked=0, Total=992 [2018-04-11 10:17:32,103 INFO L87 Difference]: Start difference. First operand 137 states and 138 transitions. Second operand 32 states. [2018-04-11 10:17:32,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 10:17:32,191 INFO L93 Difference]: Finished difference Result 149 states and 150 transitions. [2018-04-11 10:17:32,191 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-04-11 10:17:32,191 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 131 [2018-04-11 10:17:32,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 10:17:32,192 INFO L225 Difference]: With dead ends: 149 [2018-04-11 10:17:32,192 INFO L226 Difference]: Without dead ends: 149 [2018-04-11 10:17:32,192 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=392, Invalid=664, Unknown=0, NotChecked=0, Total=1056 [2018-04-11 10:17:32,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-04-11 10:17:32,194 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 145. [2018-04-11 10:17:32,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-04-11 10:17:32,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 146 transitions. [2018-04-11 10:17:32,194 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 146 transitions. Word has length 131 [2018-04-11 10:17:32,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 10:17:32,194 INFO L459 AbstractCegarLoop]: Abstraction has 145 states and 146 transitions. [2018-04-11 10:17:32,194 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-04-11 10:17:32,194 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 146 transitions. [2018-04-11 10:17:32,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-04-11 10:17:32,195 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 10:17:32,195 INFO L355 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 10:17:32,195 INFO L408 AbstractCegarLoop]: === Iteration 18 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-11 10:17:32,195 INFO L82 PathProgramCache]: Analyzing trace with hash 696632470, now seen corresponding path program 8 times [2018-04-11 10:17:32,195 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 10:17:32,195 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 10:17:32,196 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:17:32,196 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 10:17:32,196 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:17:32,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 10:17:32,207 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 10:17:32,361 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2018-04-11 10:17:32,361 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 10:17:32,361 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-11 10:17:32,366 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-11 10:17:32,398 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-11 10:17:32,398 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-11 10:17:32,400 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 10:17:32,552 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2018-04-11 10:17:32,569 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 10:17:32,569 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 34 [2018-04-11 10:17:32,570 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-04-11 10:17:32,570 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-04-11 10:17:32,570 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=409, Invalid=713, Unknown=0, NotChecked=0, Total=1122 [2018-04-11 10:17:32,570 INFO L87 Difference]: Start difference. First operand 145 states and 146 transitions. Second operand 34 states. [2018-04-11 10:17:32,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 10:17:32,716 INFO L93 Difference]: Finished difference Result 157 states and 158 transitions. [2018-04-11 10:17:32,716 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-04-11 10:17:32,716 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 139 [2018-04-11 10:17:32,716 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 10:17:32,717 INFO L225 Difference]: With dead ends: 157 [2018-04-11 10:17:32,717 INFO L226 Difference]: Without dead ends: 157 [2018-04-11 10:17:32,717 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=442, Invalid=748, Unknown=0, NotChecked=0, Total=1190 [2018-04-11 10:17:32,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-04-11 10:17:32,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 153. [2018-04-11 10:17:32,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-04-11 10:17:32,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 154 transitions. [2018-04-11 10:17:32,719 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 154 transitions. Word has length 139 [2018-04-11 10:17:32,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 10:17:32,720 INFO L459 AbstractCegarLoop]: Abstraction has 153 states and 154 transitions. [2018-04-11 10:17:32,720 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-04-11 10:17:32,720 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 154 transitions. [2018-04-11 10:17:32,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-04-11 10:17:32,720 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 10:17:32,721 INFO L355 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 10:17:32,721 INFO L408 AbstractCegarLoop]: === Iteration 19 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-11 10:17:32,721 INFO L82 PathProgramCache]: Analyzing trace with hash 996099190, now seen corresponding path program 9 times [2018-04-11 10:17:32,721 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 10:17:32,721 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 10:17:32,722 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:17:32,722 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-11 10:17:32,722 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:17:32,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 10:17:32,740 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 10:17:32,905 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2018-04-11 10:17:32,905 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 10:17:32,905 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-11 10:17:32,911 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-04-11 10:17:33,776 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-04-11 10:17:33,776 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-11 10:17:33,780 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 10:17:34,019 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 58 proven. 450 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2018-04-11 10:17:34,037 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 10:17:34,037 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22] total 40 [2018-04-11 10:17:34,037 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-04-11 10:17:34,038 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-04-11 10:17:34,038 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=524, Invalid=1036, Unknown=0, NotChecked=0, Total=1560 [2018-04-11 10:17:34,038 INFO L87 Difference]: Start difference. First operand 153 states and 154 transitions. Second operand 40 states. [2018-04-11 10:17:34,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 10:17:34,198 INFO L93 Difference]: Finished difference Result 171 states and 173 transitions. [2018-04-11 10:17:34,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-04-11 10:17:34,198 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 147 [2018-04-11 10:17:34,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 10:17:34,199 INFO L225 Difference]: With dead ends: 171 [2018-04-11 10:17:34,199 INFO L226 Difference]: Without dead ends: 171 [2018-04-11 10:17:34,199 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=562, Invalid=1078, Unknown=0, NotChecked=0, Total=1640 [2018-04-11 10:17:34,199 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-04-11 10:17:34,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 165. [2018-04-11 10:17:34,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-04-11 10:17:34,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 166 transitions. [2018-04-11 10:17:34,201 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 166 transitions. Word has length 147 [2018-04-11 10:17:34,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 10:17:34,201 INFO L459 AbstractCegarLoop]: Abstraction has 165 states and 166 transitions. [2018-04-11 10:17:34,201 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-04-11 10:17:34,201 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 166 transitions. [2018-04-11 10:17:34,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-04-11 10:17:34,202 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 10:17:34,202 INFO L355 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 10:17:34,202 INFO L408 AbstractCegarLoop]: === Iteration 20 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-11 10:17:34,202 INFO L82 PathProgramCache]: Analyzing trace with hash 1532151789, now seen corresponding path program 10 times [2018-04-11 10:17:34,202 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 10:17:34,202 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 10:17:34,203 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:17:34,203 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-11 10:17:34,203 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:17:34,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 10:17:34,215 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 10:17:34,448 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 0 proven. 578 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2018-04-11 10:17:34,449 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 10:17:34,449 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-11 10:17:34,456 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-04-11 10:17:35,345 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-04-11 10:17:35,345 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-11 10:17:35,349 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 10:17:35,490 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 0 proven. 578 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2018-04-11 10:17:35,509 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 10:17:35,509 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 40 [2018-04-11 10:17:35,510 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-04-11 10:17:35,510 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-04-11 10:17:35,510 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=571, Invalid=989, Unknown=0, NotChecked=0, Total=1560 [2018-04-11 10:17:35,510 INFO L87 Difference]: Start difference. First operand 165 states and 166 transitions. Second operand 40 states. [2018-04-11 10:17:35,631 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 10:17:35,631 INFO L93 Difference]: Finished difference Result 181 states and 182 transitions. [2018-04-11 10:17:35,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-04-11 10:17:35,631 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 159 [2018-04-11 10:17:35,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 10:17:35,632 INFO L225 Difference]: With dead ends: 181 [2018-04-11 10:17:35,632 INFO L226 Difference]: Without dead ends: 181 [2018-04-11 10:17:35,632 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 627 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=610, Invalid=1030, Unknown=0, NotChecked=0, Total=1640 [2018-04-11 10:17:35,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-04-11 10:17:35,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 177. [2018-04-11 10:17:35,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-04-11 10:17:35,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 178 transitions. [2018-04-11 10:17:35,634 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 178 transitions. Word has length 159 [2018-04-11 10:17:35,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 10:17:35,634 INFO L459 AbstractCegarLoop]: Abstraction has 177 states and 178 transitions. [2018-04-11 10:17:35,634 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-04-11 10:17:35,634 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 178 transitions. [2018-04-11 10:17:35,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-04-11 10:17:35,635 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 10:17:35,635 INFO L355 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 10:17:35,635 INFO L408 AbstractCegarLoop]: === Iteration 21 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-11 10:17:35,635 INFO L82 PathProgramCache]: Analyzing trace with hash 459930134, now seen corresponding path program 11 times [2018-04-11 10:17:35,635 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 10:17:35,635 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 10:17:35,636 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:17:35,636 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-11 10:17:35,636 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:17:35,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 10:17:35,648 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 10:17:35,899 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2018-04-11 10:17:35,900 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 10:17:35,900 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-11 10:17:35,907 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-04-11 10:18:01,538 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-04-11 10:18:01,538 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-11 10:18:01,560 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 10:18:01,588 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2018-04-11 10:18:01,617 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 10:18:01,617 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21] total 24 [2018-04-11 10:18:01,617 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-04-11 10:18:01,617 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-04-11 10:18:01,617 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=317, Unknown=0, NotChecked=0, Total=552 [2018-04-11 10:18:01,617 INFO L87 Difference]: Start difference. First operand 177 states and 178 transitions. Second operand 24 states. [2018-04-11 10:18:01,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 10:18:01,862 INFO L93 Difference]: Finished difference Result 189 states and 190 transitions. [2018-04-11 10:18:01,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-04-11 10:18:01,862 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 171 [2018-04-11 10:18:01,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 10:18:01,863 INFO L225 Difference]: With dead ends: 189 [2018-04-11 10:18:01,863 INFO L226 Difference]: Without dead ends: 189 [2018-04-11 10:18:01,864 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=654, Invalid=1152, Unknown=0, NotChecked=0, Total=1806 [2018-04-11 10:18:01,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-04-11 10:18:01,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 185. [2018-04-11 10:18:01,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-04-11 10:18:01,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 186 transitions. [2018-04-11 10:18:01,867 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 186 transitions. Word has length 171 [2018-04-11 10:18:01,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 10:18:01,867 INFO L459 AbstractCegarLoop]: Abstraction has 185 states and 186 transitions. [2018-04-11 10:18:01,867 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-04-11 10:18:01,868 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 186 transitions. [2018-04-11 10:18:01,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-04-11 10:18:01,868 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 10:18:01,868 INFO L355 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 10:18:01,869 INFO L408 AbstractCegarLoop]: === Iteration 22 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-11 10:18:01,869 INFO L82 PathProgramCache]: Analyzing trace with hash 1119526390, now seen corresponding path program 12 times [2018-04-11 10:18:01,869 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 10:18:01,869 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 10:18:01,870 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:18:01,870 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-11 10:18:01,870 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:18:01,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 10:18:01,891 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 10:18:02,462 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 0 proven. 722 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2018-04-11 10:18:02,462 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 10:18:02,463 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-11 10:18:02,493 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-04-11 10:18:10,383 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2018-04-11 10:18:10,383 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-11 10:18:10,396 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 10:18:10,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 74 proven. 722 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2018-04-11 10:18:10,670 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 10:18:10,670 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 26] total 48 [2018-04-11 10:18:10,670 INFO L442 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-04-11 10:18:10,671 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-04-11 10:18:10,671 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=770, Invalid=1486, Unknown=0, NotChecked=0, Total=2256 [2018-04-11 10:18:10,671 INFO L87 Difference]: Start difference. First operand 185 states and 186 transitions. Second operand 48 states. [2018-04-11 10:18:10,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 10:18:10,862 INFO L93 Difference]: Finished difference Result 203 states and 205 transitions. [2018-04-11 10:18:10,862 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-04-11 10:18:10,863 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 179 [2018-04-11 10:18:10,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 10:18:10,863 INFO L225 Difference]: With dead ends: 203 [2018-04-11 10:18:10,863 INFO L226 Difference]: Without dead ends: 203 [2018-04-11 10:18:10,864 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 893 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=816, Invalid=1536, Unknown=0, NotChecked=0, Total=2352 [2018-04-11 10:18:10,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-04-11 10:18:10,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 197. [2018-04-11 10:18:10,865 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-04-11 10:18:10,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 198 transitions. [2018-04-11 10:18:10,866 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 198 transitions. Word has length 179 [2018-04-11 10:18:10,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 10:18:10,866 INFO L459 AbstractCegarLoop]: Abstraction has 197 states and 198 transitions. [2018-04-11 10:18:10,866 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-04-11 10:18:10,867 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 198 transitions. [2018-04-11 10:18:10,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-04-11 10:18:10,867 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 10:18:10,867 INFO L355 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 10:18:10,868 INFO L408 AbstractCegarLoop]: === Iteration 23 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-11 10:18:10,868 INFO L82 PathProgramCache]: Analyzing trace with hash 1906780525, now seen corresponding path program 13 times [2018-04-11 10:18:10,868 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 10:18:10,868 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 10:18:10,868 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:18:10,868 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-11 10:18:10,869 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:18:10,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 10:18:10,889 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 10:18:11,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 0 proven. 882 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2018-04-11 10:18:11,122 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 10:18:11,122 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-11 10:18:11,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 10:18:11,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 10:18:11,212 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 10:18:11,548 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 0 proven. 882 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2018-04-11 10:18:11,565 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 10:18:11,565 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 48 [2018-04-11 10:18:11,565 INFO L442 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-04-11 10:18:11,565 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-04-11 10:18:11,566 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=829, Invalid=1427, Unknown=0, NotChecked=0, Total=2256 [2018-04-11 10:18:11,566 INFO L87 Difference]: Start difference. First operand 197 states and 198 transitions. Second operand 48 states. [2018-04-11 10:18:11,698 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 10:18:11,698 INFO L93 Difference]: Finished difference Result 213 states and 214 transitions. [2018-04-11 10:18:11,698 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-04-11 10:18:11,698 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 191 [2018-04-11 10:18:11,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 10:18:11,699 INFO L225 Difference]: With dead ends: 213 [2018-04-11 10:18:11,699 INFO L226 Difference]: Without dead ends: 213 [2018-04-11 10:18:11,699 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 943 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=876, Invalid=1476, Unknown=0, NotChecked=0, Total=2352 [2018-04-11 10:18:11,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-04-11 10:18:11,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 209. [2018-04-11 10:18:11,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-04-11 10:18:11,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 210 transitions. [2018-04-11 10:18:11,701 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 210 transitions. Word has length 191 [2018-04-11 10:18:11,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 10:18:11,702 INFO L459 AbstractCegarLoop]: Abstraction has 209 states and 210 transitions. [2018-04-11 10:18:11,702 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-04-11 10:18:11,702 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 210 transitions. [2018-04-11 10:18:11,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-04-11 10:18:11,702 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 10:18:11,702 INFO L355 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 10:18:11,702 INFO L408 AbstractCegarLoop]: === Iteration 24 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-11 10:18:11,703 INFO L82 PathProgramCache]: Analyzing trace with hash -785989738, now seen corresponding path program 14 times [2018-04-11 10:18:11,703 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 10:18:11,703 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 10:18:11,703 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:18:11,703 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-11 10:18:11,703 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:18:11,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 10:18:11,718 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 10:18:11,978 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2018-04-11 10:18:11,978 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 10:18:11,978 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-11 10:18:11,983 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-11 10:18:12,026 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-11 10:18:12,026 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-11 10:18:12,029 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 10:18:12,393 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2018-04-11 10:18:12,420 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 10:18:12,420 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 50 [2018-04-11 10:18:12,421 INFO L442 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-04-11 10:18:12,421 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-04-11 10:18:12,421 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=901, Invalid=1549, Unknown=0, NotChecked=0, Total=2450 [2018-04-11 10:18:12,422 INFO L87 Difference]: Start difference. First operand 209 states and 210 transitions. Second operand 50 states. [2018-04-11 10:18:12,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 10:18:12,684 INFO L93 Difference]: Finished difference Result 221 states and 222 transitions. [2018-04-11 10:18:12,684 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-04-11 10:18:12,684 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 203 [2018-04-11 10:18:12,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 10:18:12,685 INFO L225 Difference]: With dead ends: 221 [2018-04-11 10:18:12,685 INFO L226 Difference]: Without dead ends: 221 [2018-04-11 10:18:12,685 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 180 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=950, Invalid=1600, Unknown=0, NotChecked=0, Total=2550 [2018-04-11 10:18:12,686 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-04-11 10:18:12,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 217. [2018-04-11 10:18:12,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-04-11 10:18:12,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 218 transitions. [2018-04-11 10:18:12,688 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 218 transitions. Word has length 203 [2018-04-11 10:18:12,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 10:18:12,688 INFO L459 AbstractCegarLoop]: Abstraction has 217 states and 218 transitions. [2018-04-11 10:18:12,688 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-04-11 10:18:12,688 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 218 transitions. [2018-04-11 10:18:12,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-04-11 10:18:12,689 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 10:18:12,689 INFO L355 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 10:18:12,689 INFO L408 AbstractCegarLoop]: === Iteration 25 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-11 10:18:12,689 INFO L82 PathProgramCache]: Analyzing trace with hash -23689354, now seen corresponding path program 15 times [2018-04-11 10:18:12,689 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 10:18:12,689 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 10:18:12,689 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:18:12,690 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-11 10:18:12,690 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:18:12,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 10:18:12,704 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 10:18:13,028 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 1058 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2018-04-11 10:18:13,028 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 10:18:13,028 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-11 10:18:13,037 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-04-11 10:18:21,010 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2018-04-11 10:18:21,010 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-11 10:18:21,019 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 10:18:21,071 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 1058 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2018-04-11 10:18:21,093 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 10:18:21,093 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 26] total 29 [2018-04-11 10:18:21,094 INFO L442 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-04-11 10:18:21,094 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-04-11 10:18:21,094 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=457, Unknown=0, NotChecked=0, Total=812 [2018-04-11 10:18:21,095 INFO L87 Difference]: Start difference. First operand 217 states and 218 transitions. Second operand 29 states. [2018-04-11 10:18:21,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 10:18:21,520 INFO L93 Difference]: Finished difference Result 229 states and 230 transitions. [2018-04-11 10:18:21,520 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-04-11 10:18:21,520 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 211 [2018-04-11 10:18:21,521 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 10:18:21,521 INFO L225 Difference]: With dead ends: 229 [2018-04-11 10:18:21,521 INFO L226 Difference]: Without dead ends: 229 [2018-04-11 10:18:21,522 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1004, Invalid=1752, Unknown=0, NotChecked=0, Total=2756 [2018-04-11 10:18:21,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-04-11 10:18:21,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 225. [2018-04-11 10:18:21,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-04-11 10:18:21,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 226 transitions. [2018-04-11 10:18:21,524 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 226 transitions. Word has length 211 [2018-04-11 10:18:21,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 10:18:21,524 INFO L459 AbstractCegarLoop]: Abstraction has 225 states and 226 transitions. [2018-04-11 10:18:21,524 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-04-11 10:18:21,524 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 226 transitions. [2018-04-11 10:18:21,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-04-11 10:18:21,524 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 10:18:21,525 INFO L355 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 10:18:21,525 INFO L408 AbstractCegarLoop]: === Iteration 26 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-11 10:18:21,525 INFO L82 PathProgramCache]: Analyzing trace with hash 1028151382, now seen corresponding path program 16 times [2018-04-11 10:18:21,525 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 10:18:21,525 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 10:18:21,525 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:18:21,525 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-11 10:18:21,525 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:18:21,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 10:18:21,539 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 10:18:21,935 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 0 proven. 1152 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2018-04-11 10:18:21,935 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 10:18:21,935 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-11 10:18:21,941 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-04-11 10:18:21,991 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-04-11 10:18:21,991 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-11 10:18:21,994 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 10:18:21,997 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 [2018-04-11 10:18:21,997 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 10:18:21,999 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-11 10:18:21,999 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:8, output treesize:7 [2018-04-11 10:18:22,968 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 18 treesize of output 10 [2018-04-11 10:18:22,968 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-11 10:18:22,971 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-04-11 10:18:22,971 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:24, output treesize:17 [2018-04-11 10:18:23,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 1081 proven. 1223 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-11 10:18:23,088 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 10:18:23,089 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 56] total 83 [2018-04-11 10:18:23,089 INFO L442 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-04-11 10:18:23,089 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-04-11 10:18:23,090 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1466, Invalid=5340, Unknown=0, NotChecked=0, Total=6806 [2018-04-11 10:18:23,091 INFO L87 Difference]: Start difference. First operand 225 states and 226 transitions. Second operand 83 states. [2018-04-11 10:18:23,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 10:18:23,805 INFO L93 Difference]: Finished difference Result 237 states and 238 transitions. [2018-04-11 10:18:23,805 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-04-11 10:18:23,805 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 219 [2018-04-11 10:18:23,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 10:18:23,806 INFO L225 Difference]: With dead ends: 237 [2018-04-11 10:18:23,806 INFO L226 Difference]: Without dead ends: 237 [2018-04-11 10:18:23,809 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4903 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=2566, Invalid=10090, Unknown=0, NotChecked=0, Total=12656 [2018-04-11 10:18:23,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-04-11 10:18:23,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 233. [2018-04-11 10:18:23,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-04-11 10:18:23,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 234 transitions. [2018-04-11 10:18:23,813 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 234 transitions. Word has length 219 [2018-04-11 10:18:23,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 10:18:23,813 INFO L459 AbstractCegarLoop]: Abstraction has 233 states and 234 transitions. [2018-04-11 10:18:23,813 INFO L460 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-04-11 10:18:23,813 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 234 transitions. [2018-04-11 10:18:23,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-04-11 10:18:23,814 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 10:18:23,814 INFO L355 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 10:18:23,815 INFO L408 AbstractCegarLoop]: === Iteration 27 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-11 10:18:23,815 INFO L82 PathProgramCache]: Analyzing trace with hash -2096713162, now seen corresponding path program 17 times [2018-04-11 10:18:23,815 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 10:18:23,815 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 10:18:23,815 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:18:23,816 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-11 10:18:23,816 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:18:23,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 10:18:23,840 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 10:18:24,346 INFO L134 CoverageAnalysis]: Checked inductivity of 2500 backedges. 0 proven. 1250 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2018-04-11 10:18:24,346 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 10:18:24,346 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-11 10:18:24,352 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-04-11 10:20:02,557 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2018-04-11 10:20:02,557 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-11 10:20:02,601 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-11 10:20:02,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2500 backedges. 0 proven. 1250 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2018-04-11 10:20:02,659 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-11 10:20:02,659 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 28] total 31 [2018-04-11 10:20:02,659 INFO L442 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-04-11 10:20:02,660 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-04-11 10:20:02,660 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=520, Unknown=0, NotChecked=0, Total=930 [2018-04-11 10:20:02,660 INFO L87 Difference]: Start difference. First operand 233 states and 234 transitions. Second operand 31 states. [2018-04-11 10:20:03,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-11 10:20:03,142 INFO L93 Difference]: Finished difference Result 245 states and 246 transitions. [2018-04-11 10:20:03,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-04-11 10:20:03,142 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 227 [2018-04-11 10:20:03,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-11 10:20:03,143 INFO L225 Difference]: With dead ends: 245 [2018-04-11 10:20:03,143 INFO L226 Difference]: Without dead ends: 245 [2018-04-11 10:20:03,144 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1165, Invalid=2027, Unknown=0, NotChecked=0, Total=3192 [2018-04-11 10:20:03,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-04-11 10:20:03,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 241. [2018-04-11 10:20:03,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-04-11 10:20:03,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 242 transitions. [2018-04-11 10:20:03,147 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 242 transitions. Word has length 227 [2018-04-11 10:20:03,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-11 10:20:03,147 INFO L459 AbstractCegarLoop]: Abstraction has 241 states and 242 transitions. [2018-04-11 10:20:03,148 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-04-11 10:20:03,148 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 242 transitions. [2018-04-11 10:20:03,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-04-11 10:20:03,149 INFO L347 BasicCegarLoop]: Found error trace [2018-04-11 10:20:03,149 INFO L355 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-11 10:20:03,149 INFO L408 AbstractCegarLoop]: === Iteration 28 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-11 10:20:03,149 INFO L82 PathProgramCache]: Analyzing trace with hash -178514666, now seen corresponding path program 18 times [2018-04-11 10:20:03,149 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-11 10:20:03,149 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-11 10:20:03,150 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:20:03,150 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-11 10:20:03,150 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-11 10:20:03,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-11 10:20:03,170 WARN L137 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-11 10:20:03,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 0 proven. 1352 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2018-04-11 10:20:03,631 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-11 10:20:03,631 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-11 10:20:03,637 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown