java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf -i ../../../trunk/examples/svcomp/memsafety/lockfree-3.0_true-valid-memsafety.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-835382a-m [2018-04-05 17:07:47,835 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-04-05 17:07:47,837 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-04-05 17:07:47,852 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-04-05 17:07:47,853 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-04-05 17:07:47,855 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-04-05 17:07:47,856 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-04-05 17:07:47,862 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-04-05 17:07:47,864 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-04-05 17:07:47,865 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-04-05 17:07:47,869 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-04-05 17:07:47,869 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-04-05 17:07:47,871 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-04-05 17:07:47,872 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-04-05 17:07:47,877 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-04-05 17:07:47,880 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-04-05 17:07:47,883 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-04-05 17:07:47,885 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-04-05 17:07:47,887 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-04-05 17:07:47,888 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-04-05 17:07:47,891 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-04-05 17:07:47,891 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-04-05 17:07:47,892 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-04-05 17:07:47,893 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-04-05 17:07:47,893 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-04-05 17:07:47,895 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-04-05 17:07:47,895 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-04-05 17:07:47,896 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-04-05 17:07:47,897 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-04-05 17:07:47,897 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-04-05 17:07:47,898 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-04-05 17:07:47,898 INFO L98 SettingsManager]: Beginning loading settings from /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/eq-bench/svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf [2018-04-05 17:07:47,929 INFO L110 SettingsManager]: Loading preferences was successful [2018-04-05 17:07:47,929 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-04-05 17:07:47,929 INFO L131 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2018-04-05 17:07:47,930 INFO L133 SettingsManager]: * ultimate.logging.details=de.uni_freiburg.informatik.ultimate.plugins.icfgtransformation=DEBUG; [2018-04-05 17:07:47,930 INFO L131 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2018-04-05 17:07:47,930 INFO L133 SettingsManager]: * to procedures, called more than once=true [2018-04-05 17:07:47,931 INFO L131 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2018-04-05 17:07:47,931 INFO L133 SettingsManager]: * Abstract domain for RCFG-of-the-future=VPDomain [2018-04-05 17:07:47,931 INFO L133 SettingsManager]: * Use the RCFG-of-the-future interface=true [2018-04-05 17:07:47,932 INFO L131 SettingsManager]: Preferences of LTL2Aut differ from their defaults: [2018-04-05 17:07:47,932 INFO L133 SettingsManager]: * Property to check=[] a a: x > 42 [2018-04-05 17:07:47,932 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-04-05 17:07:47,937 INFO L133 SettingsManager]: * sizeof long=4 [2018-04-05 17:07:47,937 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-04-05 17:07:47,937 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-04-05 17:07:47,938 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-04-05 17:07:47,938 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-04-05 17:07:47,938 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-04-05 17:07:47,938 INFO L133 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2018-04-05 17:07:47,938 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-04-05 17:07:47,939 INFO L133 SettingsManager]: * sizeof long double=12 [2018-04-05 17:07:47,939 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-04-05 17:07:47,939 INFO L133 SettingsManager]: * Size of a code block=SingleStatement [2018-04-05 17:07:47,939 INFO L133 SettingsManager]: * Add additional assume for each assert=false [2018-04-05 17:07:47,939 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-04-05 17:07:47,940 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-05 17:07:47,940 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-04-05 17:07:47,940 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-04-05 17:07:47,940 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-04-05 17:07:47,940 INFO L133 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2018-04-05 17:07:47,941 INFO L133 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2018-04-05 17:07:47,941 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:07:47,941 INFO L133 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2018-04-05 17:07:47,943 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-04-05 17:07:47,943 INFO L133 SettingsManager]: * TransformationType=HEAP_SEPARATOR [2018-04-05 17:07:47,943 INFO L131 SettingsManager]: Preferences of Boogie Printer differ from their defaults: [2018-04-05 17:07:47,944 INFO L133 SettingsManager]: * Dump path:=C:\Users\alex\AppData\Local\Temp\ [2018-04-05 17:07:48,028 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-04-05 17:07:48,061 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-04-05 17:07:48,079 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-04-05 17:07:48,085 INFO L271 PluginConnector]: Initializing CDTParser... [2018-04-05 17:07:48,085 INFO L276 PluginConnector]: CDTParser initialized [2018-04-05 17:07:48,086 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety/lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,557 INFO L225 CDTParser]: Created temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG5c3988954 [2018-04-05 17:07:48,920 INFO L287 CDTParser]: IsIndexed: true [2018-04-05 17:07:48,921 INFO L288 CDTParser]: Found 1 translation units. [2018-04-05 17:07:48,922 INFO L168 CDTParser]: Scanning lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,935 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-04-05 17:07:48,935 INFO L215 ultiparseSymbolTable]: [2018-04-05 17:07:48,935 INFO L218 ultiparseSymbolTable]: Function table: [2018-04-05 17:07:48,936 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_flockfree_____true_valid_memsafety_i__pop ('pop') in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,936 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_flockfree_____true_valid_memsafety_i__push ('push') in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,936 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,936 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-04-05 17:07:48,936 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____off64_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,936 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____qaddr_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,936 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____blksize_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,937 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__blksize_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,937 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____caddr_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,937 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__fd_set in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,937 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__sigset_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,937 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____rlim64_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,937 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__u_quad_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,937 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__garbage in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,937 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____u_char in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,938 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____int32_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,938 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__ulong in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,938 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__mode_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,938 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__pc1 in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,938 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__pthread_rwlockattr_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,938 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__fsblkcnt_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,938 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__clock_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,938 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__daddr_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,939 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____u_short in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,939 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____id_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,939 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__pc4 in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,939 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__key_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,939 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____dev_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,939 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__u_int32_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,939 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__pthread_barrier_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,939 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____u_quad_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,940 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__u_long in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,940 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__size_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,940 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____ino_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,940 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____pid_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,940 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____intptr_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,940 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__pthread_mutexattr_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,940 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____mode_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,940 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____gid_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,941 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____timer_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,941 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__pid_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,941 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____sigset_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,941 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__u_int in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,941 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__gid_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,941 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____fsid_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,941 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__caddr_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,941 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____quad_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,942 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__u_short in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,942 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__div_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,942 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____suseconds_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,942 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____u_long in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,942 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__pthread_spinlock_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,942 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____rlim_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,942 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____int16_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,942 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____uint32_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,943 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__uid_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,945 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__pthread_cond_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,945 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____socklen_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,945 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____pthread_list_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,945 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__lldiv_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,945 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__int16_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,946 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__u_int16_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,946 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__blkcnt_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,946 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__u_char in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,946 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__off_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,946 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____clockid_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,946 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__quad_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,946 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____sig_atomic_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,946 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__pthread_attr_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,947 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____uid_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,949 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____int64_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,949 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__pthread_once_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,949 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__wchar_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,949 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____uint64_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,949 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__uint in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,949 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__ssize_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,950 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__nlink_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,950 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__loff_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,950 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____fsblkcnt64_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,950 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____nlink_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,950 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____daddr_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,950 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____clock_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,950 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____blkcnt64_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,950 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__pthread_condattr_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,951 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__int32_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,951 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__suseconds_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,951 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__pthread_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,951 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____ssize_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,951 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__u_int8_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,951 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____fd_mask in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,951 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__fsid_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,951 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__timer_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,951 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__clockid_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,952 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____loff_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,952 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____int8_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,952 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____off_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,952 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__fd_mask in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,952 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__fsfilcnt_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,953 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____WAIT_STATUS in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,953 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__pthread_mutex_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,953 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__ino_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,953 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____uint16_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,953 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__int64_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,953 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____fsfilcnt_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,953 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__ushort in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,953 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____ino64_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,954 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____time_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,954 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__int8_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,954 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__u_int64_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,954 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____key_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,954 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__time_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,954 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__S in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,954 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____uint8_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,954 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__ldiv_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,955 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__register_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,956 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__id_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,956 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____swblk_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,956 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____useconds_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,956 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____fsfilcnt64_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,957 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__dev_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,957 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__pthread_rwlock_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,957 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____blkcnt_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,957 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__pthread_barrierattr_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,957 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____u_int in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,957 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i____fsblkcnt_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:48,957 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_flockfree_____true_valid_memsafety_i__pthread_key_t in lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:49,037 INFO L330 CDTParser]: Deleted temporary CDT project at /storage/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAG5c3988954 [2018-04-05 17:07:49,068 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-04-05 17:07:49,072 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-04-05 17:07:49,079 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-04-05 17:07:49,079 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-04-05 17:07:49,097 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-04-05 17:07:49,099 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 05:07:49" (1/1) ... [2018-04-05 17:07:49,106 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f7dc907 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:07:49, skipping insertion in model container [2018-04-05 17:07:49,107 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 05.04 05:07:49" (1/1) ... [2018-04-05 17:07:49,141 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-05 17:07:49,240 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-05 17:07:49,604 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-05 17:07:49,714 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-05 17:07:49,739 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 115 non ball SCCs. Number of states in SCCs 115. [2018-04-05 17:07:49,821 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:07:49 WrapperNode [2018-04-05 17:07:49,822 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-04-05 17:07:49,827 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-04-05 17:07:49,827 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-04-05 17:07:49,827 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-04-05 17:07:49,844 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:07:49" (1/1) ... [2018-04-05 17:07:49,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:07:49" (1/1) ... [2018-04-05 17:07:49,867 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:07:49" (1/1) ... [2018-04-05 17:07:49,868 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:07:49" (1/1) ... [2018-04-05 17:07:49,905 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:07:49" (1/1) ... [2018-04-05 17:07:49,914 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:07:49" (1/1) ... [2018-04-05 17:07:49,918 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:07:49" (1/1) ... [2018-04-05 17:07:49,923 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-04-05 17:07:49,924 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-04-05 17:07:49,924 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-04-05 17:07:49,924 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-04-05 17:07:49,929 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:07:49" (1/1) ... No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-05 17:07:50,221 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-04-05 17:07:50,221 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-04-05 17:07:50,221 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_flockfree_____true_valid_memsafety_i__push [2018-04-05 17:07:50,221 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_flockfree_____true_valid_memsafety_i__pop [2018-04-05 17:07:50,221 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-04-05 17:07:50,226 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-04-05 17:07:50,227 INFO L128 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-04-05 17:07:50,227 INFO L128 BoogieDeclarations]: Found specification of procedure atof [2018-04-05 17:07:50,227 INFO L128 BoogieDeclarations]: Found specification of procedure atoi [2018-04-05 17:07:50,227 INFO L128 BoogieDeclarations]: Found specification of procedure atol [2018-04-05 17:07:50,227 INFO L128 BoogieDeclarations]: Found specification of procedure atoll [2018-04-05 17:07:50,228 INFO L128 BoogieDeclarations]: Found specification of procedure strtod [2018-04-05 17:07:50,228 INFO L128 BoogieDeclarations]: Found specification of procedure strtof [2018-04-05 17:07:50,228 INFO L128 BoogieDeclarations]: Found specification of procedure strtold [2018-04-05 17:07:50,228 INFO L128 BoogieDeclarations]: Found specification of procedure strtol [2018-04-05 17:07:50,228 INFO L128 BoogieDeclarations]: Found specification of procedure strtoul [2018-04-05 17:07:50,229 INFO L128 BoogieDeclarations]: Found specification of procedure strtoq [2018-04-05 17:07:50,229 INFO L128 BoogieDeclarations]: Found specification of procedure strtouq [2018-04-05 17:07:50,229 INFO L128 BoogieDeclarations]: Found specification of procedure strtoll [2018-04-05 17:07:50,235 INFO L128 BoogieDeclarations]: Found specification of procedure strtoull [2018-04-05 17:07:50,236 INFO L128 BoogieDeclarations]: Found specification of procedure l64a [2018-04-05 17:07:50,236 INFO L128 BoogieDeclarations]: Found specification of procedure a64l [2018-04-05 17:07:50,236 INFO L128 BoogieDeclarations]: Found specification of procedure select [2018-04-05 17:07:50,236 INFO L128 BoogieDeclarations]: Found specification of procedure pselect [2018-04-05 17:07:50,236 INFO L128 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-04-05 17:07:50,236 INFO L128 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-04-05 17:07:50,237 INFO L128 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-04-05 17:07:50,237 INFO L128 BoogieDeclarations]: Found specification of procedure random [2018-04-05 17:07:50,237 INFO L128 BoogieDeclarations]: Found specification of procedure srandom [2018-04-05 17:07:50,237 INFO L128 BoogieDeclarations]: Found specification of procedure initstate [2018-04-05 17:07:50,237 INFO L128 BoogieDeclarations]: Found specification of procedure setstate [2018-04-05 17:07:50,237 INFO L128 BoogieDeclarations]: Found specification of procedure random_r [2018-04-05 17:07:50,237 INFO L128 BoogieDeclarations]: Found specification of procedure srandom_r [2018-04-05 17:07:50,237 INFO L128 BoogieDeclarations]: Found specification of procedure initstate_r [2018-04-05 17:07:50,238 INFO L128 BoogieDeclarations]: Found specification of procedure setstate_r [2018-04-05 17:07:50,238 INFO L128 BoogieDeclarations]: Found specification of procedure rand [2018-04-05 17:07:50,238 INFO L128 BoogieDeclarations]: Found specification of procedure srand [2018-04-05 17:07:50,238 INFO L128 BoogieDeclarations]: Found specification of procedure rand_r [2018-04-05 17:07:50,238 INFO L128 BoogieDeclarations]: Found specification of procedure drand48 [2018-04-05 17:07:50,238 INFO L128 BoogieDeclarations]: Found specification of procedure erand48 [2018-04-05 17:07:50,238 INFO L128 BoogieDeclarations]: Found specification of procedure lrand48 [2018-04-05 17:07:50,239 INFO L128 BoogieDeclarations]: Found specification of procedure nrand48 [2018-04-05 17:07:50,240 INFO L128 BoogieDeclarations]: Found specification of procedure mrand48 [2018-04-05 17:07:50,240 INFO L128 BoogieDeclarations]: Found specification of procedure jrand48 [2018-04-05 17:07:50,240 INFO L128 BoogieDeclarations]: Found specification of procedure srand48 [2018-04-05 17:07:50,240 INFO L128 BoogieDeclarations]: Found specification of procedure seed48 [2018-04-05 17:07:50,241 INFO L128 BoogieDeclarations]: Found specification of procedure lcong48 [2018-04-05 17:07:50,241 INFO L128 BoogieDeclarations]: Found specification of procedure drand48_r [2018-04-05 17:07:50,241 INFO L128 BoogieDeclarations]: Found specification of procedure erand48_r [2018-04-05 17:07:50,241 INFO L128 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-04-05 17:07:50,241 INFO L128 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-04-05 17:07:50,241 INFO L128 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-04-05 17:07:50,241 INFO L128 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-04-05 17:07:50,242 INFO L128 BoogieDeclarations]: Found specification of procedure srand48_r [2018-04-05 17:07:50,242 INFO L128 BoogieDeclarations]: Found specification of procedure seed48_r [2018-04-05 17:07:50,242 INFO L128 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-04-05 17:07:50,242 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-04-05 17:07:50,242 INFO L128 BoogieDeclarations]: Found specification of procedure calloc [2018-04-05 17:07:50,242 INFO L128 BoogieDeclarations]: Found specification of procedure realloc [2018-04-05 17:07:50,242 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-04-05 17:07:50,242 INFO L128 BoogieDeclarations]: Found specification of procedure cfree [2018-04-05 17:07:50,243 INFO L128 BoogieDeclarations]: Found specification of procedure alloca [2018-04-05 17:07:50,243 INFO L128 BoogieDeclarations]: Found specification of procedure valloc [2018-04-05 17:07:50,243 INFO L128 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-04-05 17:07:50,243 INFO L128 BoogieDeclarations]: Found specification of procedure abort [2018-04-05 17:07:50,243 INFO L128 BoogieDeclarations]: Found specification of procedure atexit [2018-04-05 17:07:50,243 INFO L128 BoogieDeclarations]: Found specification of procedure on_exit [2018-04-05 17:07:50,244 INFO L128 BoogieDeclarations]: Found specification of procedure exit [2018-04-05 17:07:50,245 INFO L128 BoogieDeclarations]: Found specification of procedure _Exit [2018-04-05 17:07:50,245 INFO L128 BoogieDeclarations]: Found specification of procedure getenv [2018-04-05 17:07:50,245 INFO L128 BoogieDeclarations]: Found specification of procedure __secure_getenv [2018-04-05 17:07:50,245 INFO L128 BoogieDeclarations]: Found specification of procedure putenv [2018-04-05 17:07:50,245 INFO L128 BoogieDeclarations]: Found specification of procedure setenv [2018-04-05 17:07:50,245 INFO L128 BoogieDeclarations]: Found specification of procedure unsetenv [2018-04-05 17:07:50,245 INFO L128 BoogieDeclarations]: Found specification of procedure clearenv [2018-04-05 17:07:50,246 INFO L128 BoogieDeclarations]: Found specification of procedure mktemp [2018-04-05 17:07:50,246 INFO L128 BoogieDeclarations]: Found specification of procedure mkstemp [2018-04-05 17:07:50,246 INFO L128 BoogieDeclarations]: Found specification of procedure mkstemps [2018-04-05 17:07:50,246 INFO L128 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-04-05 17:07:50,246 INFO L128 BoogieDeclarations]: Found specification of procedure system [2018-04-05 17:07:50,246 INFO L128 BoogieDeclarations]: Found specification of procedure realpath [2018-04-05 17:07:50,246 INFO L128 BoogieDeclarations]: Found specification of procedure bsearch [2018-04-05 17:07:50,247 INFO L128 BoogieDeclarations]: Found specification of procedure qsort [2018-04-05 17:07:50,249 INFO L128 BoogieDeclarations]: Found specification of procedure abs [2018-04-05 17:07:50,249 INFO L128 BoogieDeclarations]: Found specification of procedure labs [2018-04-05 17:07:50,249 INFO L128 BoogieDeclarations]: Found specification of procedure llabs [2018-04-05 17:07:50,249 INFO L128 BoogieDeclarations]: Found specification of procedure div [2018-04-05 17:07:50,249 INFO L128 BoogieDeclarations]: Found specification of procedure ldiv [2018-04-05 17:07:50,249 INFO L128 BoogieDeclarations]: Found specification of procedure lldiv [2018-04-05 17:07:50,250 INFO L128 BoogieDeclarations]: Found specification of procedure ecvt [2018-04-05 17:07:50,250 INFO L128 BoogieDeclarations]: Found specification of procedure fcvt [2018-04-05 17:07:50,250 INFO L128 BoogieDeclarations]: Found specification of procedure gcvt [2018-04-05 17:07:50,250 INFO L128 BoogieDeclarations]: Found specification of procedure qecvt [2018-04-05 17:07:50,250 INFO L128 BoogieDeclarations]: Found specification of procedure qfcvt [2018-04-05 17:07:50,250 INFO L128 BoogieDeclarations]: Found specification of procedure qgcvt [2018-04-05 17:07:50,250 INFO L128 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-04-05 17:07:50,251 INFO L128 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-04-05 17:07:50,251 INFO L128 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-04-05 17:07:50,251 INFO L128 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-04-05 17:07:50,251 INFO L128 BoogieDeclarations]: Found specification of procedure mblen [2018-04-05 17:07:50,251 INFO L128 BoogieDeclarations]: Found specification of procedure mbtowc [2018-04-05 17:07:50,251 INFO L128 BoogieDeclarations]: Found specification of procedure wctomb [2018-04-05 17:07:50,251 INFO L128 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-04-05 17:07:50,251 INFO L128 BoogieDeclarations]: Found specification of procedure wcstombs [2018-04-05 17:07:50,252 INFO L128 BoogieDeclarations]: Found specification of procedure rpmatch [2018-04-05 17:07:50,264 INFO L128 BoogieDeclarations]: Found specification of procedure getsubopt [2018-04-05 17:07:50,264 INFO L128 BoogieDeclarations]: Found specification of procedure getloadavg [2018-04-05 17:07:50,264 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2018-04-05 17:07:50,264 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_flockfree_____true_valid_memsafety_i__push [2018-04-05 17:07:50,264 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-04-05 17:07:50,265 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-04-05 17:07:50,265 INFO L128 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2018-04-05 17:07:50,265 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_flockfree_____true_valid_memsafety_i__pop [2018-04-05 17:07:50,265 INFO L128 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2018-04-05 17:07:50,265 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-04-05 17:07:50,265 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-04-05 17:07:50,265 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-04-05 17:07:50,266 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-04-05 17:07:50,267 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-04-05 17:07:50,267 INFO L128 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-04-05 17:07:51,345 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-04-05 17:07:51,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 05:07:51 BoogieIcfgContainer [2018-04-05 17:07:51,345 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-04-05 17:07:51,347 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-04-05 17:07:51,347 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-04-05 17:07:51,353 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-04-05 17:07:51,354 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 05.04 05:07:49" (1/3) ... [2018-04-05 17:07:51,354 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66e8018e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 05:07:51, skipping insertion in model container [2018-04-05 17:07:51,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 05.04 05:07:49" (2/3) ... [2018-04-05 17:07:51,355 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66e8018e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 05.04 05:07:51, skipping insertion in model container [2018-04-05 17:07:51,355 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 05.04 05:07:51" (3/3) ... [2018-04-05 17:07:51,358 INFO L107 eAbstractionObserver]: Analyzing ICFG lockfree-3.0_true-valid-memsafety.i [2018-04-05 17:07:51,372 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-04-05 17:07:51,387 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 19 error locations. [2018-04-05 17:07:51,474 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-04-05 17:07:51,475 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-04-05 17:07:51,475 INFO L370 AbstractCegarLoop]: Hoare is true [2018-04-05 17:07:51,476 INFO L371 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-04-05 17:07:51,476 INFO L372 AbstractCegarLoop]: Backedges is TWOTRACK [2018-04-05 17:07:51,476 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-04-05 17:07:51,476 INFO L374 AbstractCegarLoop]: Difference is false [2018-04-05 17:07:51,476 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-04-05 17:07:51,476 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-04-05 17:07:51,477 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-04-05 17:07:51,499 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states. [2018-04-05 17:07:51,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2018-04-05 17:07:51,508 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:07:51,509 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:07:51,509 INFO L408 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_flockfree_____true_valid_memsafety_i__pushErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr6RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr7RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr4RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr4RequiresViolation, mainErr1RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr2AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr3AssertViolationMEMORY_FREE]=== [2018-04-05 17:07:51,516 INFO L82 PathProgramCache]: Analyzing trace with hash 469595319, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:07:51,539 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:07:51,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:07:51,681 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:07:51,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:07:51,707 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:07:51,737 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:07:51,782 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 17:07:51,783 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2018-04-05 17:07:51,786 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2018-04-05 17:07:51,801 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2018-04-05 17:07:51,801 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-04-05 17:07:51,804 INFO L87 Difference]: Start difference. First operand 124 states. Second operand 2 states. [2018-04-05 17:07:51,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:07:51,884 INFO L93 Difference]: Finished difference Result 143 states and 163 transitions. [2018-04-05 17:07:51,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-04-05 17:07:51,887 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2018-04-05 17:07:51,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:07:51,935 INFO L225 Difference]: With dead ends: 143 [2018-04-05 17:07:51,935 INFO L226 Difference]: Without dead ends: 121 [2018-04-05 17:07:51,941 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2018-04-05 17:07:51,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2018-04-05 17:07:52,022 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 121. [2018-04-05 17:07:52,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-04-05 17:07:52,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 138 transitions. [2018-04-05 17:07:52,037 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 138 transitions. Word has length 19 [2018-04-05 17:07:52,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:07:52,037 INFO L459 AbstractCegarLoop]: Abstraction has 121 states and 138 transitions. [2018-04-05 17:07:52,037 INFO L460 AbstractCegarLoop]: Interpolant automaton has 2 states. [2018-04-05 17:07:52,039 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 138 transitions. [2018-04-05 17:07:52,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2018-04-05 17:07:52,041 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:07:52,041 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:07:52,041 INFO L408 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_flockfree_____true_valid_memsafety_i__pushErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr6RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr7RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr4RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr4RequiresViolation, mainErr1RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr2AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr3AssertViolationMEMORY_FREE]=== [2018-04-05 17:07:52,041 INFO L82 PathProgramCache]: Analyzing trace with hash -619800426, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:07:52,065 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:07:52,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:07:52,118 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:07:52,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:07:52,179 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:07:52,223 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:07:52,277 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 17:07:52,278 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2018-04-05 17:07:52,280 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-04-05 17:07:52,280 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-04-05 17:07:52,280 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-04-05 17:07:52,284 INFO L87 Difference]: Start difference. First operand 121 states and 138 transitions. Second operand 3 states. [2018-04-05 17:07:52,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:07:52,368 INFO L93 Difference]: Finished difference Result 140 states and 158 transitions. [2018-04-05 17:07:52,369 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-04-05 17:07:52,369 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2018-04-05 17:07:52,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:07:52,371 INFO L225 Difference]: With dead ends: 140 [2018-04-05 17:07:52,372 INFO L226 Difference]: Without dead ends: 122 [2018-04-05 17:07:52,377 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-04-05 17:07:52,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2018-04-05 17:07:52,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2018-04-05 17:07:52,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2018-04-05 17:07:52,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 139 transitions. [2018-04-05 17:07:52,399 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 139 transitions. Word has length 24 [2018-04-05 17:07:52,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:07:52,400 INFO L459 AbstractCegarLoop]: Abstraction has 122 states and 139 transitions. [2018-04-05 17:07:52,400 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-04-05 17:07:52,400 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 139 transitions. [2018-04-05 17:07:52,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2018-04-05 17:07:52,401 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:07:52,401 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:07:52,408 INFO L408 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_flockfree_____true_valid_memsafety_i__pushErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr6RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr7RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr4RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr4RequiresViolation, mainErr1RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr2AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr3AssertViolationMEMORY_FREE]=== [2018-04-05 17:07:52,408 INFO L82 PathProgramCache]: Analyzing trace with hash 1707250905, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) [2018-04-05 17:07:52,432 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:07:52,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:07:52,529 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:07:52,650 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:07:52,650 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:07:52,731 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:07:52,768 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 17:07:52,768 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2018-04-05 17:07:52,769 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-04-05 17:07:52,769 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-04-05 17:07:52,769 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-04-05 17:07:52,769 INFO L87 Difference]: Start difference. First operand 122 states and 139 transitions. Second operand 3 states. [2018-04-05 17:07:52,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:07:52,844 INFO L93 Difference]: Finished difference Result 230 states and 266 transitions. [2018-04-05 17:07:52,845 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-04-05 17:07:52,845 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2018-04-05 17:07:52,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:07:52,849 INFO L225 Difference]: With dead ends: 230 [2018-04-05 17:07:52,849 INFO L226 Difference]: Without dead ends: 214 [2018-04-05 17:07:52,850 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-04-05 17:07:52,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2018-04-05 17:07:52,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 195. [2018-04-05 17:07:52,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2018-04-05 17:07:52,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 240 transitions. [2018-04-05 17:07:52,876 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 240 transitions. Word has length 26 [2018-04-05 17:07:52,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:07:52,876 INFO L459 AbstractCegarLoop]: Abstraction has 195 states and 240 transitions. [2018-04-05 17:07:52,877 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-04-05 17:07:52,877 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 240 transitions. [2018-04-05 17:07:52,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2018-04-05 17:07:52,878 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:07:52,878 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:07:52,878 INFO L408 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_flockfree_____true_valid_memsafety_i__pushErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr6RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr7RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr4RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr4RequiresViolation, mainErr1RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr2AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr3AssertViolationMEMORY_FREE]=== [2018-04-05 17:07:52,879 INFO L82 PathProgramCache]: Analyzing trace with hash 1385169119, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:07:52,890 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:07:52,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:07:52,995 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:07:53,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:07:53,057 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:07:53,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:07:53,101 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 17:07:53,102 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2018-04-05 17:07:53,102 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2018-04-05 17:07:53,102 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-04-05 17:07:53,102 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-04-05 17:07:53,103 INFO L87 Difference]: Start difference. First operand 195 states and 240 transitions. Second operand 3 states. [2018-04-05 17:07:53,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:07:53,292 INFO L93 Difference]: Finished difference Result 250 states and 308 transitions. [2018-04-05 17:07:53,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-04-05 17:07:53,293 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2018-04-05 17:07:53,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:07:53,295 INFO L225 Difference]: With dead ends: 250 [2018-04-05 17:07:53,295 INFO L226 Difference]: Without dead ends: 243 [2018-04-05 17:07:53,296 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 52 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-04-05 17:07:53,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2018-04-05 17:07:53,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 232. [2018-04-05 17:07:53,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 232 states. [2018-04-05 17:07:53,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 232 states to 232 states and 289 transitions. [2018-04-05 17:07:53,321 INFO L78 Accepts]: Start accepts. Automaton has 232 states and 289 transitions. Word has length 27 [2018-04-05 17:07:53,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:07:53,321 INFO L459 AbstractCegarLoop]: Abstraction has 232 states and 289 transitions. [2018-04-05 17:07:53,321 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states. [2018-04-05 17:07:53,322 INFO L276 IsEmpty]: Start isEmpty. Operand 232 states and 289 transitions. [2018-04-05 17:07:53,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-04-05 17:07:53,323 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:07:53,323 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:07:53,323 INFO L408 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_flockfree_____true_valid_memsafety_i__pushErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr6RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr7RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr4RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr4RequiresViolation, mainErr1RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr2AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr3AssertViolationMEMORY_FREE]=== [2018-04-05 17:07:53,323 INFO L82 PathProgramCache]: Analyzing trace with hash -1774016154, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:07:53,335 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:07:53,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:07:53,393 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:07:53,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:07:53,478 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:07:53,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:07:53,584 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 17:07:53,584 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 8 [2018-04-05 17:07:53,584 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2018-04-05 17:07:53,585 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2018-04-05 17:07:53,585 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2018-04-05 17:07:53,585 INFO L87 Difference]: Start difference. First operand 232 states and 289 transitions. Second operand 8 states. [2018-04-05 17:07:53,860 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:07:53,860 INFO L93 Difference]: Finished difference Result 646 states and 819 transitions. [2018-04-05 17:07:53,860 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-04-05 17:07:53,861 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 32 [2018-04-05 17:07:53,861 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:07:53,864 INFO L225 Difference]: With dead ends: 646 [2018-04-05 17:07:53,865 INFO L226 Difference]: Without dead ends: 429 [2018-04-05 17:07:53,868 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 54 SyntacticMatches, 3 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2018-04-05 17:07:53,868 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2018-04-05 17:07:53,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 391. [2018-04-05 17:07:53,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 391 states. [2018-04-05 17:07:53,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 503 transitions. [2018-04-05 17:07:53,904 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 503 transitions. Word has length 32 [2018-04-05 17:07:53,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:07:53,905 INFO L459 AbstractCegarLoop]: Abstraction has 391 states and 503 transitions. [2018-04-05 17:07:53,905 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states. [2018-04-05 17:07:53,905 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 503 transitions. [2018-04-05 17:07:53,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-04-05 17:07:53,906 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:07:53,906 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:07:53,906 INFO L408 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_flockfree_____true_valid_memsafety_i__pushErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr6RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr7RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr4RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr4RequiresViolation, mainErr1RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr2AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr3AssertViolationMEMORY_FREE]=== [2018-04-05 17:07:53,907 INFO L82 PathProgramCache]: Analyzing trace with hash -1774293274, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:07:53,916 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:07:53,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:07:53,965 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:07:53,992 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 17:07:53,995 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 17:07:53,997 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 17:07:53,997 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2018-04-05 17:07:54,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:07:54,005 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:07:54,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:07:54,054 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 17:07:54,054 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2018-04-05 17:07:54,055 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-04-05 17:07:54,055 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-04-05 17:07:54,056 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-04-05 17:07:54,056 INFO L87 Difference]: Start difference. First operand 391 states and 503 transitions. Second operand 4 states. [2018-04-05 17:07:54,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:07:54,699 INFO L93 Difference]: Finished difference Result 680 states and 870 transitions. [2018-04-05 17:07:54,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-04-05 17:07:54,700 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2018-04-05 17:07:54,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:07:54,724 INFO L225 Difference]: With dead ends: 680 [2018-04-05 17:07:54,724 INFO L226 Difference]: Without dead ends: 676 [2018-04-05 17:07:54,725 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 64 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-04-05 17:07:54,734 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 676 states. [2018-04-05 17:07:54,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 676 to 641. [2018-04-05 17:07:54,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 641 states. [2018-04-05 17:07:54,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 641 states to 641 states and 831 transitions. [2018-04-05 17:07:54,797 INFO L78 Accepts]: Start accepts. Automaton has 641 states and 831 transitions. Word has length 32 [2018-04-05 17:07:54,798 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:07:54,798 INFO L459 AbstractCegarLoop]: Abstraction has 641 states and 831 transitions. [2018-04-05 17:07:54,798 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-04-05 17:07:54,798 INFO L276 IsEmpty]: Start isEmpty. Operand 641 states and 831 transitions. [2018-04-05 17:07:54,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2018-04-05 17:07:54,800 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:07:54,800 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:07:54,800 INFO L408 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_flockfree_____true_valid_memsafety_i__pushErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr6RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr7RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr4RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr4RequiresViolation, mainErr1RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr2AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr3AssertViolationMEMORY_FREE]=== [2018-04-05 17:07:54,800 INFO L82 PathProgramCache]: Analyzing trace with hash -1774293273, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:07:54,816 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:07:54,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:07:54,928 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:07:55,087 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:07:55,089 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:07:55,288 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:07:55,328 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 17:07:55,329 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2018-04-05 17:07:55,329 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-04-05 17:07:55,329 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-04-05 17:07:55,329 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-04-05 17:07:55,330 INFO L87 Difference]: Start difference. First operand 641 states and 831 transitions. Second operand 6 states. [2018-04-05 17:07:55,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:07:55,945 INFO L93 Difference]: Finished difference Result 1455 states and 1881 transitions. [2018-04-05 17:07:55,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-04-05 17:07:55,948 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2018-04-05 17:07:55,948 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:07:55,971 INFO L225 Difference]: With dead ends: 1455 [2018-04-05 17:07:55,971 INFO L226 Difference]: Without dead ends: 829 [2018-04-05 17:07:55,981 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2018-04-05 17:07:55,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 829 states. [2018-04-05 17:07:56,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 829 to 648. [2018-04-05 17:07:56,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 648 states. [2018-04-05 17:07:56,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 648 states to 648 states and 839 transitions. [2018-04-05 17:07:56,100 INFO L78 Accepts]: Start accepts. Automaton has 648 states and 839 transitions. Word has length 32 [2018-04-05 17:07:56,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:07:56,100 INFO L459 AbstractCegarLoop]: Abstraction has 648 states and 839 transitions. [2018-04-05 17:07:56,100 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-04-05 17:07:56,100 INFO L276 IsEmpty]: Start isEmpty. Operand 648 states and 839 transitions. [2018-04-05 17:07:56,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2018-04-05 17:07:56,101 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:07:56,102 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:07:56,102 INFO L408 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_flockfree_____true_valid_memsafety_i__pushErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr6RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr7RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr4RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr4RequiresViolation, mainErr1RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr2AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr3AssertViolationMEMORY_FREE]=== [2018-04-05 17:07:56,102 INFO L82 PathProgramCache]: Analyzing trace with hash -383813590, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:07:56,138 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:07:56,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:07:56,213 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:07:56,234 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2018-04-05 17:07:56,234 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 17:07:56,253 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 17:07:56,254 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2018-04-05 17:07:56,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:07:56,375 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:07:56,597 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:07:56,647 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 17:07:56,647 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2018-04-05 17:07:56,648 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-04-05 17:07:56,648 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-04-05 17:07:56,648 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-04-05 17:07:56,649 INFO L87 Difference]: Start difference. First operand 648 states and 839 transitions. Second operand 6 states. [2018-04-05 17:07:57,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:07:57,507 INFO L93 Difference]: Finished difference Result 1161 states and 1478 transitions. [2018-04-05 17:07:57,508 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2018-04-05 17:07:57,508 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2018-04-05 17:07:57,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:07:57,522 INFO L225 Difference]: With dead ends: 1161 [2018-04-05 17:07:57,522 INFO L226 Difference]: Without dead ends: 1157 [2018-04-05 17:07:57,523 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 63 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-04-05 17:07:57,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2018-04-05 17:07:57,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1096. [2018-04-05 17:07:57,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1096 states. [2018-04-05 17:07:57,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1096 states to 1096 states and 1416 transitions. [2018-04-05 17:07:57,644 INFO L78 Accepts]: Start accepts. Automaton has 1096 states and 1416 transitions. Word has length 34 [2018-04-05 17:07:57,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:07:57,646 INFO L459 AbstractCegarLoop]: Abstraction has 1096 states and 1416 transitions. [2018-04-05 17:07:57,647 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-04-05 17:07:57,647 INFO L276 IsEmpty]: Start isEmpty. Operand 1096 states and 1416 transitions. [2018-04-05 17:07:57,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2018-04-05 17:07:57,648 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:07:57,648 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:07:57,648 INFO L408 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_flockfree_____true_valid_memsafety_i__pushErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr6RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr7RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr4RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr4RequiresViolation, mainErr1RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr2AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr3AssertViolationMEMORY_FREE]=== [2018-04-05 17:07:57,648 INFO L82 PathProgramCache]: Analyzing trace with hash 2139105792, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:07:57,674 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:07:57,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:07:57,758 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:07:57,942 WARN L151 SmtUtils]: Spent 133ms on a formula simplification. DAG size of input: 7 DAG size of output 5 [2018-04-05 17:07:58,357 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:07:58,357 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:07:58,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:07:58,983 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 17:07:58,983 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 12 [2018-04-05 17:07:58,984 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-04-05 17:07:58,984 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-04-05 17:07:58,984 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2018-04-05 17:07:58,984 INFO L87 Difference]: Start difference. First operand 1096 states and 1416 transitions. Second operand 12 states. [2018-04-05 17:08:00,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:08:00,460 INFO L93 Difference]: Finished difference Result 4034 states and 5226 transitions. [2018-04-05 17:08:00,466 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-04-05 17:08:00,466 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 36 [2018-04-05 17:08:00,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:08:00,486 INFO L225 Difference]: With dead ends: 4034 [2018-04-05 17:08:00,486 INFO L226 Difference]: Without dead ends: 2956 [2018-04-05 17:08:00,496 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=88, Invalid=218, Unknown=0, NotChecked=0, Total=306 [2018-04-05 17:08:00,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2956 states. [2018-04-05 17:08:00,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2956 to 2880. [2018-04-05 17:08:00,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2880 states. [2018-04-05 17:08:00,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2880 states to 2880 states and 3640 transitions. [2018-04-05 17:08:00,693 INFO L78 Accepts]: Start accepts. Automaton has 2880 states and 3640 transitions. Word has length 36 [2018-04-05 17:08:00,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:08:00,693 INFO L459 AbstractCegarLoop]: Abstraction has 2880 states and 3640 transitions. [2018-04-05 17:08:00,693 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-04-05 17:08:00,693 INFO L276 IsEmpty]: Start isEmpty. Operand 2880 states and 3640 transitions. [2018-04-05 17:08:00,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2018-04-05 17:08:00,699 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:08:00,699 INFO L355 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:08:00,699 INFO L408 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_flockfree_____true_valid_memsafety_i__pushErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr6RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr7RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr4RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr4RequiresViolation, mainErr1RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr2AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr3AssertViolationMEMORY_FREE]=== [2018-04-05 17:08:00,700 INFO L82 PathProgramCache]: Analyzing trace with hash 1885419390, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:08:00,723 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:08:00,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:08:00,782 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:08:01,038 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:08:01,039 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:08:01,285 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:08:01,323 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 17:08:01,323 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 9 [2018-04-05 17:08:01,323 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2018-04-05 17:08:01,324 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2018-04-05 17:08:01,324 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2018-04-05 17:08:01,324 INFO L87 Difference]: Start difference. First operand 2880 states and 3640 transitions. Second operand 9 states. [2018-04-05 17:08:02,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:08:02,006 INFO L93 Difference]: Finished difference Result 6762 states and 8638 transitions. [2018-04-05 17:08:02,007 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-04-05 17:08:02,007 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 49 [2018-04-05 17:08:02,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:08:02,029 INFO L225 Difference]: With dead ends: 6762 [2018-04-05 17:08:02,029 INFO L226 Difference]: Without dead ends: 3900 [2018-04-05 17:08:02,037 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2018-04-05 17:08:02,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3900 states. [2018-04-05 17:08:02,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3900 to 3768. [2018-04-05 17:08:02,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3768 states. [2018-04-05 17:08:02,358 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3768 states to 3768 states and 4728 transitions. [2018-04-05 17:08:02,359 INFO L78 Accepts]: Start accepts. Automaton has 3768 states and 4728 transitions. Word has length 49 [2018-04-05 17:08:02,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:08:02,359 INFO L459 AbstractCegarLoop]: Abstraction has 3768 states and 4728 transitions. [2018-04-05 17:08:02,359 INFO L460 AbstractCegarLoop]: Interpolant automaton has 9 states. [2018-04-05 17:08:02,359 INFO L276 IsEmpty]: Start isEmpty. Operand 3768 states and 4728 transitions. [2018-04-05 17:08:02,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2018-04-05 17:08:02,370 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:08:02,370 INFO L355 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:08:02,370 INFO L408 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_flockfree_____true_valid_memsafety_i__pushErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr6RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr7RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr4RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr4RequiresViolation, mainErr1RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr2AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr3AssertViolationMEMORY_FREE]=== [2018-04-05 17:08:02,370 INFO L82 PathProgramCache]: Analyzing trace with hash -1193421658, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:08:02,392 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:08:02,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:08:02,486 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:08:02,711 WARN L151 SmtUtils]: Spent 140ms on a formula simplification. DAG size of input: 7 DAG size of output 6 [2018-04-05 17:08:02,985 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:08:02,986 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:08:03,449 WARN L151 SmtUtils]: Spent 180ms on a formula simplification. DAG size of input: 13 DAG size of output 8 [2018-04-05 17:08:03,608 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:08:03,638 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 17:08:03,638 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 13 [2018-04-05 17:08:03,638 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-04-05 17:08:03,639 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-04-05 17:08:03,639 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2018-04-05 17:08:03,639 INFO L87 Difference]: Start difference. First operand 3768 states and 4728 transitions. Second operand 13 states. [2018-04-05 17:08:05,198 WARN L148 SmtUtils]: Spent 102ms on a formula simplification that was a NOOP. DAG size: 11 [2018-04-05 17:08:06,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:08:06,034 INFO L93 Difference]: Finished difference Result 15176 states and 18906 transitions. [2018-04-05 17:08:06,034 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-04-05 17:08:06,034 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 57 [2018-04-05 17:08:06,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:08:06,106 INFO L225 Difference]: With dead ends: 15176 [2018-04-05 17:08:06,106 INFO L226 Difference]: Without dead ends: 11426 [2018-04-05 17:08:06,172 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 216 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=245, Invalid=625, Unknown=0, NotChecked=0, Total=870 [2018-04-05 17:08:06,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11426 states. [2018-04-05 17:08:06,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11426 to 8970. [2018-04-05 17:08:06,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8970 states. [2018-04-05 17:08:06,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8970 states to 8970 states and 10972 transitions. [2018-04-05 17:08:06,723 INFO L78 Accepts]: Start accepts. Automaton has 8970 states and 10972 transitions. Word has length 57 [2018-04-05 17:08:06,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:08:06,724 INFO L459 AbstractCegarLoop]: Abstraction has 8970 states and 10972 transitions. [2018-04-05 17:08:06,724 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-04-05 17:08:06,724 INFO L276 IsEmpty]: Start isEmpty. Operand 8970 states and 10972 transitions. [2018-04-05 17:08:06,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2018-04-05 17:08:06,726 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:08:06,726 INFO L355 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:08:06,726 INFO L408 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_flockfree_____true_valid_memsafety_i__pushErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr6RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr7RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr4RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr4RequiresViolation, mainErr1RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr2AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr3AssertViolationMEMORY_FREE]=== [2018-04-05 17:08:06,726 INFO L82 PathProgramCache]: Analyzing trace with hash 69762973, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:08:06,783 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:08:06,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:08:06,841 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:08:07,043 WARN L151 SmtUtils]: Spent 170ms on a formula simplification. DAG size of input: 7 DAG size of output 5 [2018-04-05 17:08:07,361 WARN L148 SmtUtils]: Spent 106ms on a formula simplification that was a NOOP. DAG size: 9 [2018-04-05 17:08:07,503 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:08:07,514 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:08:07,634 WARN L151 SmtUtils]: Spent 118ms on a formula simplification. DAG size of input: 12 DAG size of output 9 [2018-04-05 17:08:07,978 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:08:08,036 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 17:08:08,036 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 11 [2018-04-05 17:08:08,036 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-04-05 17:08:08,037 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-04-05 17:08:08,037 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-04-05 17:08:08,037 INFO L87 Difference]: Start difference. First operand 8970 states and 10972 transitions. Second operand 11 states. [2018-04-05 17:08:09,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:08:09,598 INFO L93 Difference]: Finished difference Result 12695 states and 15437 transitions. [2018-04-05 17:08:09,599 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2018-04-05 17:08:09,599 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 62 [2018-04-05 17:08:09,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:08:09,635 INFO L225 Difference]: With dead ends: 12695 [2018-04-05 17:08:09,635 INFO L226 Difference]: Without dead ends: 3407 [2018-04-05 17:08:09,659 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=90, Invalid=252, Unknown=0, NotChecked=0, Total=342 [2018-04-05 17:08:09,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3407 states. [2018-04-05 17:08:09,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3407 to 3273. [2018-04-05 17:08:09,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3273 states. [2018-04-05 17:08:09,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3273 states to 3273 states and 3921 transitions. [2018-04-05 17:08:09,857 INFO L78 Accepts]: Start accepts. Automaton has 3273 states and 3921 transitions. Word has length 62 [2018-04-05 17:08:09,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:08:09,857 INFO L459 AbstractCegarLoop]: Abstraction has 3273 states and 3921 transitions. [2018-04-05 17:08:09,857 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-04-05 17:08:09,857 INFO L276 IsEmpty]: Start isEmpty. Operand 3273 states and 3921 transitions. [2018-04-05 17:08:09,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2018-04-05 17:08:09,865 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:08:09,865 INFO L355 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:08:09,865 INFO L408 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_flockfree_____true_valid_memsafety_i__pushErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr6RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr7RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr4RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr4RequiresViolation, mainErr1RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr2AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr3AssertViolationMEMORY_FREE]=== [2018-04-05 17:08:09,866 INFO L82 PathProgramCache]: Analyzing trace with hash -1859582758, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:08:09,896 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:08:09,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:08:09,966 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:08:10,105 WARN L151 SmtUtils]: Spent 117ms on a formula simplification. DAG size of input: 9 DAG size of output 8 [2018-04-05 17:08:10,701 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:08:10,701 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:08:11,071 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 32 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:08:11,102 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 17:08:11,103 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2018-04-05 17:08:11,103 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-04-05 17:08:11,103 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-04-05 17:08:11,103 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2018-04-05 17:08:11,104 INFO L87 Difference]: Start difference. First operand 3273 states and 3921 transitions. Second operand 13 states. [2018-04-05 17:08:15,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:08:15,487 INFO L93 Difference]: Finished difference Result 17011 states and 22021 transitions. [2018-04-05 17:08:15,488 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-04-05 17:08:15,488 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 72 [2018-04-05 17:08:15,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:08:15,676 INFO L225 Difference]: With dead ends: 17011 [2018-04-05 17:08:15,677 INFO L226 Difference]: Without dead ends: 13756 [2018-04-05 17:08:15,701 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 137 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 135 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=190, Invalid=566, Unknown=0, NotChecked=0, Total=756 [2018-04-05 17:08:15,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13756 states. [2018-04-05 17:08:16,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13756 to 11194. [2018-04-05 17:08:16,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11194 states. [2018-04-05 17:08:16,528 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11194 states to 11194 states and 13692 transitions. [2018-04-05 17:08:16,528 INFO L78 Accepts]: Start accepts. Automaton has 11194 states and 13692 transitions. Word has length 72 [2018-04-05 17:08:16,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:08:16,528 INFO L459 AbstractCegarLoop]: Abstraction has 11194 states and 13692 transitions. [2018-04-05 17:08:16,529 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-04-05 17:08:16,529 INFO L276 IsEmpty]: Start isEmpty. Operand 11194 states and 13692 transitions. [2018-04-05 17:08:16,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2018-04-05 17:08:16,531 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:08:16,531 INFO L355 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:08:16,531 INFO L408 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_flockfree_____true_valid_memsafety_i__pushErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr6RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr7RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr4RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr4RequiresViolation, mainErr1RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr2AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr3AssertViolationMEMORY_FREE]=== [2018-04-05 17:08:16,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1431756733, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:08:16,601 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:08:16,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:08:16,696 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:08:17,382 WARN L151 SmtUtils]: Spent 103ms on a formula simplification. DAG size of input: 7 DAG size of output 6 [2018-04-05 17:08:17,472 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:08:17,473 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:08:17,682 WARN L151 SmtUtils]: Spent 208ms on a formula simplification. DAG size of input: 15 DAG size of output 9 [2018-04-05 17:08:18,426 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:08:18,463 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 17:08:18,464 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2018-04-05 17:08:18,464 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-04-05 17:08:18,465 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-04-05 17:08:18,465 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2018-04-05 17:08:18,465 INFO L87 Difference]: Start difference. First operand 11194 states and 13692 transitions. Second operand 16 states. [2018-04-05 17:08:19,591 WARN L151 SmtUtils]: Spent 240ms on a formula simplification. DAG size of input: 16 DAG size of output 13 [2018-04-05 17:08:21,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:08:21,028 INFO L93 Difference]: Finished difference Result 24296 states and 30200 transitions. [2018-04-05 17:08:21,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-04-05 17:08:21,028 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 76 [2018-04-05 17:08:21,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:08:21,096 INFO L225 Difference]: With dead ends: 24296 [2018-04-05 17:08:21,096 INFO L226 Difference]: Without dead ends: 14622 [2018-04-05 17:08:21,124 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 138 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 197 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=238, Invalid=754, Unknown=0, NotChecked=0, Total=992 [2018-04-05 17:08:21,137 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14622 states. [2018-04-05 17:08:21,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14622 to 14160. [2018-04-05 17:08:21,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14160 states. [2018-04-05 17:08:21,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14160 states to 14160 states and 17692 transitions. [2018-04-05 17:08:21,935 INFO L78 Accepts]: Start accepts. Automaton has 14160 states and 17692 transitions. Word has length 76 [2018-04-05 17:08:21,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:08:21,935 INFO L459 AbstractCegarLoop]: Abstraction has 14160 states and 17692 transitions. [2018-04-05 17:08:21,936 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-04-05 17:08:21,938 INFO L276 IsEmpty]: Start isEmpty. Operand 14160 states and 17692 transitions. [2018-04-05 17:08:21,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2018-04-05 17:08:21,940 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:08:21,940 INFO L355 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:08:21,941 INFO L408 AbstractCegarLoop]: === Iteration 15 === [__U_MULTI_flockfree_____true_valid_memsafety_i__pushErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr6RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr7RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr4RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr4RequiresViolation, mainErr1RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr2AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr3AssertViolationMEMORY_FREE]=== [2018-04-05 17:08:21,941 INFO L82 PathProgramCache]: Analyzing trace with hash 136497930, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:08:21,961 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:08:22,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:08:22,028 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:08:22,285 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 21 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:08:22,285 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:08:22,750 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 19 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:08:22,778 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 17:08:22,779 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 17 [2018-04-05 17:08:22,779 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-04-05 17:08:22,780 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-04-05 17:08:22,780 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=215, Unknown=0, NotChecked=0, Total=272 [2018-04-05 17:08:22,780 INFO L87 Difference]: Start difference. First operand 14160 states and 17692 transitions. Second operand 17 states. [2018-04-05 17:08:24,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:08:24,083 INFO L93 Difference]: Finished difference Result 30200 states and 39638 transitions. [2018-04-05 17:08:24,083 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-04-05 17:08:24,083 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 77 [2018-04-05 17:08:24,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:08:24,158 INFO L225 Difference]: With dead ends: 30200 [2018-04-05 17:08:24,159 INFO L226 Difference]: Without dead ends: 17560 [2018-04-05 17:08:24,192 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 237 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=338, Invalid=994, Unknown=0, NotChecked=0, Total=1332 [2018-04-05 17:08:24,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17560 states. [2018-04-05 17:08:24,824 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17560 to 12572. [2018-04-05 17:08:24,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12572 states. [2018-04-05 17:08:24,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12572 states to 12572 states and 15628 transitions. [2018-04-05 17:08:24,850 INFO L78 Accepts]: Start accepts. Automaton has 12572 states and 15628 transitions. Word has length 77 [2018-04-05 17:08:24,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:08:24,851 INFO L459 AbstractCegarLoop]: Abstraction has 12572 states and 15628 transitions. [2018-04-05 17:08:24,851 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-04-05 17:08:24,851 INFO L276 IsEmpty]: Start isEmpty. Operand 12572 states and 15628 transitions. [2018-04-05 17:08:24,853 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-04-05 17:08:24,853 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:08:24,854 INFO L355 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:08:24,854 INFO L408 AbstractCegarLoop]: === Iteration 16 === [__U_MULTI_flockfree_____true_valid_memsafety_i__pushErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr6RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr7RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr4RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr4RequiresViolation, mainErr1RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr2AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr3AssertViolationMEMORY_FREE]=== [2018-04-05 17:08:24,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1925943435, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:08:24,863 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:08:24,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:08:24,904 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:08:24,956 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 44 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:08:24,956 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:08:25,056 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 44 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:08:25,078 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 17:08:25,078 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2018-04-05 17:08:25,078 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-04-05 17:08:25,079 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-04-05 17:08:25,079 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-04-05 17:08:25,079 INFO L87 Difference]: Start difference. First operand 12572 states and 15628 transitions. Second operand 13 states. [2018-04-05 17:08:26,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:08:26,248 INFO L93 Difference]: Finished difference Result 26417 states and 32847 transitions. [2018-04-05 17:08:26,253 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-04-05 17:08:26,253 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 79 [2018-04-05 17:08:26,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:08:26,294 INFO L225 Difference]: With dead ends: 26417 [2018-04-05 17:08:26,294 INFO L226 Difference]: Without dead ends: 13317 [2018-04-05 17:08:26,314 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 171 GetRequests, 148 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2018-04-05 17:08:26,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13317 states. [2018-04-05 17:08:26,775 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13317 to 12507. [2018-04-05 17:08:26,775 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12507 states. [2018-04-05 17:08:26,796 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12507 states to 12507 states and 15524 transitions. [2018-04-05 17:08:26,797 INFO L78 Accepts]: Start accepts. Automaton has 12507 states and 15524 transitions. Word has length 79 [2018-04-05 17:08:26,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:08:26,797 INFO L459 AbstractCegarLoop]: Abstraction has 12507 states and 15524 transitions. [2018-04-05 17:08:26,797 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-04-05 17:08:26,797 INFO L276 IsEmpty]: Start isEmpty. Operand 12507 states and 15524 transitions. [2018-04-05 17:08:26,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2018-04-05 17:08:26,799 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:08:26,799 INFO L355 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:08:26,799 INFO L408 AbstractCegarLoop]: === Iteration 17 === [__U_MULTI_flockfree_____true_valid_memsafety_i__pushErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr6RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr7RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr4RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr4RequiresViolation, mainErr1RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr2AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr3AssertViolationMEMORY_FREE]=== [2018-04-05 17:08:26,800 INFO L82 PathProgramCache]: Analyzing trace with hash -497007035, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:08:26,808 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:08:26,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:08:26,852 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:08:26,921 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 38 proven. 18 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-04-05 17:08:26,921 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:08:27,087 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 40 proven. 18 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:08:27,109 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 17:08:27,109 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 19 [2018-04-05 17:08:27,109 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-04-05 17:08:27,109 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-04-05 17:08:27,109 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=269, Unknown=0, NotChecked=0, Total=342 [2018-04-05 17:08:27,110 INFO L87 Difference]: Start difference. First operand 12507 states and 15524 transitions. Second operand 19 states. [2018-04-05 17:08:28,141 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:08:28,141 INFO L93 Difference]: Finished difference Result 28431 states and 35818 transitions. [2018-04-05 17:08:28,142 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-04-05 17:08:28,142 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 86 [2018-04-05 17:08:28,142 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:08:28,190 INFO L225 Difference]: With dead ends: 28431 [2018-04-05 17:08:28,190 INFO L226 Difference]: Without dead ends: 15468 [2018-04-05 17:08:28,214 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 192 GetRequests, 155 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 288 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=332, Invalid=1000, Unknown=0, NotChecked=0, Total=1332 [2018-04-05 17:08:28,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15468 states. [2018-04-05 17:08:28,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15468 to 13489. [2018-04-05 17:08:28,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13489 states. [2018-04-05 17:08:28,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13489 states to 13489 states and 16833 transitions. [2018-04-05 17:08:28,952 INFO L78 Accepts]: Start accepts. Automaton has 13489 states and 16833 transitions. Word has length 86 [2018-04-05 17:08:28,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:08:28,952 INFO L459 AbstractCegarLoop]: Abstraction has 13489 states and 16833 transitions. [2018-04-05 17:08:28,952 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-04-05 17:08:28,952 INFO L276 IsEmpty]: Start isEmpty. Operand 13489 states and 16833 transitions. [2018-04-05 17:08:28,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2018-04-05 17:08:28,954 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:08:28,954 INFO L355 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:08:28,954 INFO L408 AbstractCegarLoop]: === Iteration 18 === [__U_MULTI_flockfree_____true_valid_memsafety_i__pushErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr6RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr7RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr4RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr4RequiresViolation, mainErr1RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr2AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr3AssertViolationMEMORY_FREE]=== [2018-04-05 17:08:28,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1256551694, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:08:28,967 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:08:29,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:08:29,009 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:08:29,045 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 44 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2018-04-05 17:08:29,045 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:08:29,101 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 36 proven. 16 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-04-05 17:08:29,123 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-04-05 17:08:29,123 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 11 [2018-04-05 17:08:29,123 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-04-05 17:08:29,123 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-04-05 17:08:29,124 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2018-04-05 17:08:29,124 INFO L87 Difference]: Start difference. First operand 13489 states and 16833 transitions. Second operand 11 states. [2018-04-05 17:08:29,761 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:08:29,762 INFO L93 Difference]: Finished difference Result 18475 states and 22813 transitions. [2018-04-05 17:08:29,762 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-04-05 17:08:29,762 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 88 [2018-04-05 17:08:29,762 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:08:29,772 INFO L225 Difference]: With dead ends: 18475 [2018-04-05 17:08:29,772 INFO L226 Difference]: Without dead ends: 4344 [2018-04-05 17:08:29,788 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 170 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=224, Unknown=0, NotChecked=0, Total=306 [2018-04-05 17:08:29,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4344 states. [2018-04-05 17:08:29,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4344 to 2859. [2018-04-05 17:08:29,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2859 states. [2018-04-05 17:08:29,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2859 states to 2859 states and 3485 transitions. [2018-04-05 17:08:29,940 INFO L78 Accepts]: Start accepts. Automaton has 2859 states and 3485 transitions. Word has length 88 [2018-04-05 17:08:29,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:08:29,940 INFO L459 AbstractCegarLoop]: Abstraction has 2859 states and 3485 transitions. [2018-04-05 17:08:29,940 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-04-05 17:08:29,940 INFO L276 IsEmpty]: Start isEmpty. Operand 2859 states and 3485 transitions. [2018-04-05 17:08:29,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2018-04-05 17:08:29,942 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:08:29,942 INFO L355 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:08:29,942 INFO L408 AbstractCegarLoop]: === Iteration 19 === [__U_MULTI_flockfree_____true_valid_memsafety_i__pushErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr6RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr7RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr4RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr4RequiresViolation, mainErr1RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr2AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr3AssertViolationMEMORY_FREE]=== [2018-04-05 17:08:29,942 INFO L82 PathProgramCache]: Analyzing trace with hash -1501465423, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:08:29,949 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:08:29,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:08:29,998 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:08:30,211 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 38 proven. 32 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2018-04-05 17:08:30,211 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:08:30,466 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 40 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-05 17:08:30,491 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 17:08:30,491 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 22 [2018-04-05 17:08:30,492 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-04-05 17:08:30,492 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-04-05 17:08:30,492 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=370, Unknown=0, NotChecked=0, Total=462 [2018-04-05 17:08:30,492 INFO L87 Difference]: Start difference. First operand 2859 states and 3485 transitions. Second operand 22 states. [2018-04-05 17:08:31,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:08:31,838 INFO L93 Difference]: Finished difference Result 8716 states and 11275 transitions. [2018-04-05 17:08:31,839 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2018-04-05 17:08:31,839 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 104 [2018-04-05 17:08:31,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:08:31,850 INFO L225 Difference]: With dead ends: 8716 [2018-04-05 17:08:31,850 INFO L226 Difference]: Without dead ends: 5916 [2018-04-05 17:08:31,855 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 233 GetRequests, 191 SyntacticMatches, 1 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=433, Invalid=1373, Unknown=0, NotChecked=0, Total=1806 [2018-04-05 17:08:31,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5916 states. [2018-04-05 17:08:32,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5916 to 3831. [2018-04-05 17:08:32,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3831 states. [2018-04-05 17:08:32,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3831 states to 3831 states and 4879 transitions. [2018-04-05 17:08:32,090 INFO L78 Accepts]: Start accepts. Automaton has 3831 states and 4879 transitions. Word has length 104 [2018-04-05 17:08:32,090 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:08:32,090 INFO L459 AbstractCegarLoop]: Abstraction has 3831 states and 4879 transitions. [2018-04-05 17:08:32,090 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-04-05 17:08:32,090 INFO L276 IsEmpty]: Start isEmpty. Operand 3831 states and 4879 transitions. [2018-04-05 17:08:32,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2018-04-05 17:08:32,158 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:08:32,158 INFO L355 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:08:32,159 INFO L408 AbstractCegarLoop]: === Iteration 20 === [__U_MULTI_flockfree_____true_valid_memsafety_i__pushErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr6RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr7RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr4RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr4RequiresViolation, mainErr1RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr2AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr3AssertViolationMEMORY_FREE]=== [2018-04-05 17:08:32,159 INFO L82 PathProgramCache]: Analyzing trace with hash -912146342, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:08:32,172 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:08:32,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:08:32,238 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:08:32,289 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 60 proven. 4 refuted. 0 times theorem prover too weak. 46 trivial. 0 not checked. [2018-04-05 17:08:32,290 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:08:32,404 INFO L134 CoverageAnalysis]: Checked inductivity of 110 backedges. 70 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-04-05 17:08:32,425 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 17:08:32,425 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 16 [2018-04-05 17:08:32,426 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-04-05 17:08:32,426 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-04-05 17:08:32,426 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2018-04-05 17:08:32,426 INFO L87 Difference]: Start difference. First operand 3831 states and 4879 transitions. Second operand 16 states. [2018-04-05 17:08:33,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:08:33,214 INFO L93 Difference]: Finished difference Result 8646 states and 11167 transitions. [2018-04-05 17:08:33,214 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2018-04-05 17:08:33,214 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 118 [2018-04-05 17:08:33,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:08:33,226 INFO L225 Difference]: With dead ends: 8646 [2018-04-05 17:08:33,226 INFO L226 Difference]: Without dead ends: 4874 [2018-04-05 17:08:33,233 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 253 GetRequests, 222 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=239, Invalid=753, Unknown=0, NotChecked=0, Total=992 [2018-04-05 17:08:33,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4874 states. [2018-04-05 17:08:33,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4874 to 4771. [2018-04-05 17:08:33,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4771 states. [2018-04-05 17:08:33,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4771 states to 4771 states and 6137 transitions. [2018-04-05 17:08:33,517 INFO L78 Accepts]: Start accepts. Automaton has 4771 states and 6137 transitions. Word has length 118 [2018-04-05 17:08:33,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:08:33,518 INFO L459 AbstractCegarLoop]: Abstraction has 4771 states and 6137 transitions. [2018-04-05 17:08:33,518 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-04-05 17:08:33,518 INFO L276 IsEmpty]: Start isEmpty. Operand 4771 states and 6137 transitions. [2018-04-05 17:08:33,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2018-04-05 17:08:33,521 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:08:33,521 INFO L355 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:08:33,521 INFO L408 AbstractCegarLoop]: === Iteration 21 === [__U_MULTI_flockfree_____true_valid_memsafety_i__pushErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr6RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr7RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr4RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr4RequiresViolation, mainErr1RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr2AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr3AssertViolationMEMORY_FREE]=== [2018-04-05 17:08:33,521 INFO L82 PathProgramCache]: Analyzing trace with hash 1555096654, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:08:33,538 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:08:33,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:08:33,607 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:08:33,685 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 96 proven. 30 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2018-04-05 17:08:33,685 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:08:33,954 INFO L134 CoverageAnalysis]: Checked inductivity of 174 backedges. 108 proven. 30 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2018-04-05 17:08:33,975 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 17:08:33,975 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 14] total 21 [2018-04-05 17:08:33,976 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-04-05 17:08:33,976 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-04-05 17:08:33,976 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=338, Unknown=0, NotChecked=0, Total=420 [2018-04-05 17:08:33,976 INFO L87 Difference]: Start difference. First operand 4771 states and 6137 transitions. Second operand 21 states. [2018-04-05 17:08:35,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:08:35,095 INFO L93 Difference]: Finished difference Result 11080 states and 14497 transitions. [2018-04-05 17:08:35,095 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-04-05 17:08:35,095 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 146 [2018-04-05 17:08:35,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:08:35,106 INFO L225 Difference]: With dead ends: 11080 [2018-04-05 17:08:35,106 INFO L226 Difference]: Without dead ends: 6368 [2018-04-05 17:08:35,114 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 314 GetRequests, 274 SyntacticMatches, 2 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 319 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=378, Invalid=1182, Unknown=0, NotChecked=0, Total=1560 [2018-04-05 17:08:35,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6368 states. [2018-04-05 17:08:35,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6368 to 4811. [2018-04-05 17:08:35,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4811 states. [2018-04-05 17:08:35,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4811 states to 4811 states and 6217 transitions. [2018-04-05 17:08:35,439 INFO L78 Accepts]: Start accepts. Automaton has 4811 states and 6217 transitions. Word has length 146 [2018-04-05 17:08:35,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:08:35,439 INFO L459 AbstractCegarLoop]: Abstraction has 4811 states and 6217 transitions. [2018-04-05 17:08:35,439 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-04-05 17:08:35,439 INFO L276 IsEmpty]: Start isEmpty. Operand 4811 states and 6217 transitions. [2018-04-05 17:08:35,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-04-05 17:08:35,441 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:08:35,442 INFO L355 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:08:35,442 INFO L408 AbstractCegarLoop]: === Iteration 22 === [__U_MULTI_flockfree_____true_valid_memsafety_i__pushErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr6RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr7RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr4RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr4RequiresViolation, mainErr1RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr2AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr3AssertViolationMEMORY_FREE]=== [2018-04-05 17:08:35,442 INFO L82 PathProgramCache]: Analyzing trace with hash 397881204, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:08:35,448 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:08:35,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:08:35,517 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:08:35,621 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 202 proven. 7 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2018-04-05 17:08:35,621 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:08:35,770 INFO L134 CoverageAnalysis]: Checked inductivity of 303 backedges. 136 proven. 49 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2018-04-05 17:08:35,802 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 17:08:35,802 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2018-04-05 17:08:35,802 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-04-05 17:08:35,803 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-04-05 17:08:35,803 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2018-04-05 17:08:35,803 INFO L87 Difference]: Start difference. First operand 4811 states and 6217 transitions. Second operand 16 states. [2018-04-05 17:08:36,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:08:36,763 INFO L93 Difference]: Finished difference Result 11622 states and 15337 transitions. [2018-04-05 17:08:36,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-04-05 17:08:36,763 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 165 [2018-04-05 17:08:36,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:08:36,775 INFO L225 Difference]: With dead ends: 11622 [2018-04-05 17:08:36,775 INFO L226 Difference]: Without dead ends: 6870 [2018-04-05 17:08:36,783 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 350 GetRequests, 319 SyntacticMatches, 2 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=248, Invalid=682, Unknown=0, NotChecked=0, Total=930 [2018-04-05 17:08:36,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6870 states. [2018-04-05 17:08:37,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6870 to 6643. [2018-04-05 17:08:37,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6643 states. [2018-04-05 17:08:37,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6643 states to 6643 states and 8609 transitions. [2018-04-05 17:08:37,189 INFO L78 Accepts]: Start accepts. Automaton has 6643 states and 8609 transitions. Word has length 165 [2018-04-05 17:08:37,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:08:37,190 INFO L459 AbstractCegarLoop]: Abstraction has 6643 states and 8609 transitions. [2018-04-05 17:08:37,190 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-04-05 17:08:37,190 INFO L276 IsEmpty]: Start isEmpty. Operand 6643 states and 8609 transitions. [2018-04-05 17:08:37,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2018-04-05 17:08:37,192 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:08:37,192 INFO L355 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:08:37,192 INFO L408 AbstractCegarLoop]: === Iteration 23 === [__U_MULTI_flockfree_____true_valid_memsafety_i__pushErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr6RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr7RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr4RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr4RequiresViolation, mainErr1RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr2AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr3AssertViolationMEMORY_FREE]=== [2018-04-05 17:08:37,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1063733117, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:08:37,198 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:08:37,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:08:37,258 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:08:37,309 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 87 proven. 107 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-04-05 17:08:37,309 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:08:37,442 INFO L134 CoverageAnalysis]: Checked inductivity of 306 backedges. 81 proven. 113 refuted. 0 times theorem prover too weak. 112 trivial. 0 not checked. [2018-04-05 17:08:37,463 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 17:08:37,463 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 12 [2018-04-05 17:08:37,463 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-04-05 17:08:37,463 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-04-05 17:08:37,463 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2018-04-05 17:08:37,464 INFO L87 Difference]: Start difference. First operand 6643 states and 8609 transitions. Second operand 12 states. [2018-04-05 17:08:38,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:08:38,449 INFO L93 Difference]: Finished difference Result 18360 states and 24107 transitions. [2018-04-05 17:08:38,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2018-04-05 17:08:38,449 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 165 [2018-04-05 17:08:38,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:08:38,472 INFO L225 Difference]: With dead ends: 18360 [2018-04-05 17:08:38,472 INFO L226 Difference]: Without dead ends: 11428 [2018-04-05 17:08:38,484 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 354 GetRequests, 328 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=182, Invalid=574, Unknown=0, NotChecked=0, Total=756 [2018-04-05 17:08:38,488 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11428 states. [2018-04-05 17:08:39,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11428 to 10909. [2018-04-05 17:08:39,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10909 states. [2018-04-05 17:08:39,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10909 states to 10909 states and 14353 transitions. [2018-04-05 17:08:39,184 INFO L78 Accepts]: Start accepts. Automaton has 10909 states and 14353 transitions. Word has length 165 [2018-04-05 17:08:39,184 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:08:39,184 INFO L459 AbstractCegarLoop]: Abstraction has 10909 states and 14353 transitions. [2018-04-05 17:08:39,184 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-04-05 17:08:39,184 INFO L276 IsEmpty]: Start isEmpty. Operand 10909 states and 14353 transitions. [2018-04-05 17:08:39,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2018-04-05 17:08:39,186 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:08:39,186 INFO L355 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:08:39,186 INFO L408 AbstractCegarLoop]: === Iteration 24 === [__U_MULTI_flockfree_____true_valid_memsafety_i__pushErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr6RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr7RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr4RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr4RequiresViolation, mainErr1RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr2AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr3AssertViolationMEMORY_FREE]=== [2018-04-05 17:08:39,187 INFO L82 PathProgramCache]: Analyzing trace with hash 559434229, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:08:39,192 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:08:39,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:08:39,263 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:08:39,378 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 208 proven. 10 refuted. 0 times theorem prover too weak. 90 trivial. 0 not checked. [2018-04-05 17:08:39,379 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:08:39,498 INFO L134 CoverageAnalysis]: Checked inductivity of 308 backedges. 156 proven. 36 refuted. 0 times theorem prover too weak. 116 trivial. 0 not checked. [2018-04-05 17:08:39,520 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 17:08:39,520 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2018-04-05 17:08:39,520 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-04-05 17:08:39,521 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-04-05 17:08:39,521 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2018-04-05 17:08:39,521 INFO L87 Difference]: Start difference. First operand 10909 states and 14353 transitions. Second operand 15 states. [2018-04-05 17:08:40,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:08:40,828 INFO L93 Difference]: Finished difference Result 24896 states and 32807 transitions. [2018-04-05 17:08:40,829 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-04-05 17:08:40,829 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 167 [2018-04-05 17:08:40,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:08:40,857 INFO L225 Difference]: With dead ends: 24896 [2018-04-05 17:08:40,857 INFO L226 Difference]: Without dead ends: 14046 [2018-04-05 17:08:40,876 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 352 GetRequests, 324 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=190, Invalid=622, Unknown=0, NotChecked=0, Total=812 [2018-04-05 17:08:40,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14046 states. [2018-04-05 17:08:41,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14046 to 12437. [2018-04-05 17:08:41,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12437 states. [2018-04-05 17:08:41,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12437 states to 12437 states and 16299 transitions. [2018-04-05 17:08:41,779 INFO L78 Accepts]: Start accepts. Automaton has 12437 states and 16299 transitions. Word has length 167 [2018-04-05 17:08:41,779 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:08:41,779 INFO L459 AbstractCegarLoop]: Abstraction has 12437 states and 16299 transitions. [2018-04-05 17:08:41,780 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-04-05 17:08:41,780 INFO L276 IsEmpty]: Start isEmpty. Operand 12437 states and 16299 transitions. [2018-04-05 17:08:41,782 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2018-04-05 17:08:41,782 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:08:41,782 INFO L355 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:08:41,783 INFO L408 AbstractCegarLoop]: === Iteration 25 === [__U_MULTI_flockfree_____true_valid_memsafety_i__pushErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr6RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr7RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr4RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr4RequiresViolation, mainErr1RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr2AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr3AssertViolationMEMORY_FREE]=== [2018-04-05 17:08:41,783 INFO L82 PathProgramCache]: Analyzing trace with hash -459338332, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:08:41,788 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:08:41,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:08:41,848 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:08:42,022 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 236 proven. 8 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2018-04-05 17:08:42,022 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:08:42,222 INFO L134 CoverageAnalysis]: Checked inductivity of 318 backedges. 154 proven. 58 refuted. 0 times theorem prover too weak. 106 trivial. 0 not checked. [2018-04-05 17:08:42,244 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 17:08:42,244 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2018-04-05 17:08:42,244 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-04-05 17:08:42,244 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-04-05 17:08:42,245 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2018-04-05 17:08:42,245 INFO L87 Difference]: Start difference. First operand 12437 states and 16299 transitions. Second operand 15 states. [2018-04-05 17:08:43,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:08:43,658 INFO L93 Difference]: Finished difference Result 26424 states and 34625 transitions. [2018-04-05 17:08:43,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-04-05 17:08:43,658 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 172 [2018-04-05 17:08:43,659 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:08:43,679 INFO L225 Difference]: With dead ends: 26424 [2018-04-05 17:08:43,710 INFO L226 Difference]: Without dead ends: 14046 [2018-04-05 17:08:43,722 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 361 GetRequests, 334 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=180, Invalid=576, Unknown=0, NotChecked=0, Total=756 [2018-04-05 17:08:43,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14046 states. [2018-04-05 17:08:44,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14046 to 13965. [2018-04-05 17:08:44,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13965 states. [2018-04-05 17:08:44,634 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13965 states to 13965 states and 18183 transitions. [2018-04-05 17:08:44,635 INFO L78 Accepts]: Start accepts. Automaton has 13965 states and 18183 transitions. Word has length 172 [2018-04-05 17:08:44,635 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:08:44,635 INFO L459 AbstractCegarLoop]: Abstraction has 13965 states and 18183 transitions. [2018-04-05 17:08:44,635 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-04-05 17:08:44,635 INFO L276 IsEmpty]: Start isEmpty. Operand 13965 states and 18183 transitions. [2018-04-05 17:08:44,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-04-05 17:08:44,639 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:08:44,639 INFO L355 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:08:44,639 INFO L408 AbstractCegarLoop]: === Iteration 26 === [__U_MULTI_flockfree_____true_valid_memsafety_i__pushErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr6RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr7RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr4RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr4RequiresViolation, mainErr1RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr2AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr3AssertViolationMEMORY_FREE]=== [2018-04-05 17:08:44,639 INFO L82 PathProgramCache]: Analyzing trace with hash 61345438, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:08:44,647 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:08:44,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:08:44,728 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:08:44,831 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 150 proven. 114 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-04-05 17:08:44,832 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:08:45,055 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 152 proven. 112 refuted. 0 times theorem prover too weak. 82 trivial. 0 not checked. [2018-04-05 17:08:45,083 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 17:08:45,084 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 14 [2018-04-05 17:08:45,084 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-04-05 17:08:45,084 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-04-05 17:08:45,084 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=169, Unknown=0, NotChecked=0, Total=210 [2018-04-05 17:08:45,084 INFO L87 Difference]: Start difference. First operand 13965 states and 18183 transitions. Second operand 15 states. [2018-04-05 17:08:47,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:08:47,630 INFO L93 Difference]: Finished difference Result 23318 states and 31010 transitions. [2018-04-05 17:08:47,631 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2018-04-05 17:08:47,631 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 181 [2018-04-05 17:08:47,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:08:47,674 INFO L225 Difference]: With dead ends: 23318 [2018-04-05 17:08:47,674 INFO L226 Difference]: Without dead ends: 23315 [2018-04-05 17:08:47,686 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 399 GetRequests, 358 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=433, Invalid=1289, Unknown=0, NotChecked=0, Total=1722 [2018-04-05 17:08:47,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23315 states. [2018-04-05 17:08:49,065 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23315 to 20998. [2018-04-05 17:08:49,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20998 states. [2018-04-05 17:08:49,118 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20998 states to 20998 states and 27957 transitions. [2018-04-05 17:08:49,118 INFO L78 Accepts]: Start accepts. Automaton has 20998 states and 27957 transitions. Word has length 181 [2018-04-05 17:08:49,119 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:08:49,119 INFO L459 AbstractCegarLoop]: Abstraction has 20998 states and 27957 transitions. [2018-04-05 17:08:49,119 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-04-05 17:08:49,119 INFO L276 IsEmpty]: Start isEmpty. Operand 20998 states and 27957 transitions. [2018-04-05 17:08:49,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 182 [2018-04-05 17:08:49,123 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:08:49,123 INFO L355 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 7, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:08:49,123 INFO L408 AbstractCegarLoop]: === Iteration 27 === [__U_MULTI_flockfree_____true_valid_memsafety_i__pushErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr6RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr7RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr4RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr4RequiresViolation, mainErr1RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr2AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr3AssertViolationMEMORY_FREE]=== [2018-04-05 17:08:49,123 INFO L82 PathProgramCache]: Analyzing trace with hash 61345439, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:08:49,129 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:08:49,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:08:49,209 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:08:49,392 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 86 proven. 140 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-04-05 17:08:49,392 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:08:49,643 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2018-04-05 17:08:49,643 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 17:08:49,646 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 17:08:49,646 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:5 [2018-04-05 17:08:49,732 INFO L134 CoverageAnalysis]: Checked inductivity of 346 backedges. 86 proven. 140 refuted. 0 times theorem prover too weak. 120 trivial. 0 not checked. [2018-04-05 17:08:49,753 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 17:08:49,753 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 20 [2018-04-05 17:08:49,753 INFO L442 AbstractCegarLoop]: Interpolant automaton has 21 states [2018-04-05 17:08:49,753 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2018-04-05 17:08:49,753 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=355, Unknown=0, NotChecked=0, Total=420 [2018-04-05 17:08:49,754 INFO L87 Difference]: Start difference. First operand 20998 states and 27957 transitions. Second operand 21 states. [2018-04-05 17:08:54,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:08:54,265 INFO L93 Difference]: Finished difference Result 35294 states and 47304 transitions. [2018-04-05 17:08:54,265 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2018-04-05 17:08:54,265 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 181 [2018-04-05 17:08:54,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:08:54,357 INFO L225 Difference]: With dead ends: 35294 [2018-04-05 17:08:54,358 INFO L226 Difference]: Without dead ends: 35291 [2018-04-05 17:08:54,380 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 421 GetRequests, 359 SyntacticMatches, 5 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 706 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=780, Invalid=2642, Unknown=0, NotChecked=0, Total=3422 [2018-04-05 17:08:54,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35291 states. [2018-04-05 17:08:56,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35291 to 33484. [2018-04-05 17:08:56,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33484 states. [2018-04-05 17:08:56,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33484 states to 33484 states and 44963 transitions. [2018-04-05 17:08:56,764 INFO L78 Accepts]: Start accepts. Automaton has 33484 states and 44963 transitions. Word has length 181 [2018-04-05 17:08:56,764 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:08:56,764 INFO L459 AbstractCegarLoop]: Abstraction has 33484 states and 44963 transitions. [2018-04-05 17:08:56,764 INFO L460 AbstractCegarLoop]: Interpolant automaton has 21 states. [2018-04-05 17:08:56,764 INFO L276 IsEmpty]: Start isEmpty. Operand 33484 states and 44963 transitions. [2018-04-05 17:08:56,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-04-05 17:08:56,768 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:08:56,769 INFO L355 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:08:56,769 INFO L408 AbstractCegarLoop]: === Iteration 28 === [__U_MULTI_flockfree_____true_valid_memsafety_i__pushErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr6RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr7RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr4RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr4RequiresViolation, mainErr1RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr2AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr3AssertViolationMEMORY_FREE]=== [2018-04-05 17:08:56,769 INFO L82 PathProgramCache]: Analyzing trace with hash 583708094, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:08:56,775 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:08:56,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:08:56,841 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:08:56,914 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 230 proven. 6 refuted. 0 times theorem prover too weak. 104 trivial. 0 not checked. [2018-04-05 17:08:56,915 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:08:57,067 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 136 proven. 76 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-04-05 17:08:57,087 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 17:08:57,088 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 15 [2018-04-05 17:08:57,088 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-04-05 17:08:57,088 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-04-05 17:08:57,088 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2018-04-05 17:08:57,089 INFO L87 Difference]: Start difference. First operand 33484 states and 44963 transitions. Second operand 15 states. [2018-04-05 17:08:59,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:08:59,676 INFO L93 Difference]: Finished difference Result 61184 states and 81867 transitions. [2018-04-05 17:08:59,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-04-05 17:08:59,677 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 179 [2018-04-05 17:08:59,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:08:59,747 INFO L225 Difference]: With dead ends: 61184 [2018-04-05 17:08:59,748 INFO L226 Difference]: Without dead ends: 27609 [2018-04-05 17:08:59,807 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 376 GetRequests, 348 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=194, Invalid=618, Unknown=0, NotChecked=0, Total=812 [2018-04-05 17:08:59,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27609 states. [2018-04-05 17:09:01,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27609 to 23753. [2018-04-05 17:09:01,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23753 states. [2018-04-05 17:09:01,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23753 states to 23753 states and 31583 transitions. [2018-04-05 17:09:01,586 INFO L78 Accepts]: Start accepts. Automaton has 23753 states and 31583 transitions. Word has length 179 [2018-04-05 17:09:01,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:09:01,586 INFO L459 AbstractCegarLoop]: Abstraction has 23753 states and 31583 transitions. [2018-04-05 17:09:01,586 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-04-05 17:09:01,586 INFO L276 IsEmpty]: Start isEmpty. Operand 23753 states and 31583 transitions. [2018-04-05 17:09:01,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 189 [2018-04-05 17:09:01,591 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:09:01,591 INFO L355 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:09:01,591 INFO L408 AbstractCegarLoop]: === Iteration 29 === [__U_MULTI_flockfree_____true_valid_memsafety_i__pushErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr6RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr7RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr4RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr4RequiresViolation, mainErr1RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr2AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr3AssertViolationMEMORY_FREE]=== [2018-04-05 17:09:01,591 INFO L82 PathProgramCache]: Analyzing trace with hash 2067001229, now seen corresponding path program 2 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:09:01,600 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:09:01,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:09:01,668 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:09:01,770 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 196 proven. 4 refuted. 0 times theorem prover too weak. 178 trivial. 0 not checked. [2018-04-05 17:09:01,771 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:09:01,911 INFO L134 CoverageAnalysis]: Checked inductivity of 378 backedges. 102 proven. 90 refuted. 0 times theorem prover too weak. 186 trivial. 0 not checked. [2018-04-05 17:09:01,935 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 17:09:01,936 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 13 [2018-04-05 17:09:01,936 INFO L442 AbstractCegarLoop]: Interpolant automaton has 13 states [2018-04-05 17:09:01,936 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2018-04-05 17:09:01,936 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2018-04-05 17:09:01,936 INFO L87 Difference]: Start difference. First operand 23753 states and 31583 transitions. Second operand 13 states. [2018-04-05 17:09:03,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:09:03,243 INFO L93 Difference]: Finished difference Result 38112 states and 49613 transitions. [2018-04-05 17:09:03,243 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-04-05 17:09:03,243 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 188 [2018-04-05 17:09:03,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:09:03,266 INFO L225 Difference]: With dead ends: 38112 [2018-04-05 17:09:03,266 INFO L226 Difference]: Without dead ends: 13865 [2018-04-05 17:09:03,294 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 393 GetRequests, 369 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=449, Unknown=0, NotChecked=0, Total=600 [2018-04-05 17:09:03,299 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13865 states. [2018-04-05 17:09:04,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13865 to 13126. [2018-04-05 17:09:04,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13126 states. [2018-04-05 17:09:04,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13126 states to 13126 states and 16410 transitions. [2018-04-05 17:09:04,106 INFO L78 Accepts]: Start accepts. Automaton has 13126 states and 16410 transitions. Word has length 188 [2018-04-05 17:09:04,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:09:04,106 INFO L459 AbstractCegarLoop]: Abstraction has 13126 states and 16410 transitions. [2018-04-05 17:09:04,106 INFO L460 AbstractCegarLoop]: Interpolant automaton has 13 states. [2018-04-05 17:09:04,106 INFO L276 IsEmpty]: Start isEmpty. Operand 13126 states and 16410 transitions. [2018-04-05 17:09:04,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 245 [2018-04-05 17:09:04,110 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:09:04,110 INFO L355 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 9, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:09:04,110 INFO L408 AbstractCegarLoop]: === Iteration 30 === [__U_MULTI_flockfree_____true_valid_memsafety_i__pushErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr6RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr7RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr4RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr4RequiresViolation, mainErr1RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr2AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr3AssertViolationMEMORY_FREE]=== [2018-04-05 17:09:04,110 INFO L82 PathProgramCache]: Analyzing trace with hash -53655789, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:09:04,116 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:09:04,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:09:04,217 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:09:04,297 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 218 proven. 7 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2018-04-05 17:09:04,297 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:09:04,507 INFO L134 CoverageAnalysis]: Checked inductivity of 617 backedges. 196 proven. 21 refuted. 0 times theorem prover too weak. 400 trivial. 0 not checked. [2018-04-05 17:09:04,530 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 17:09:04,530 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2018-04-05 17:09:04,530 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-04-05 17:09:04,531 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-04-05 17:09:04,531 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2018-04-05 17:09:04,531 INFO L87 Difference]: Start difference. First operand 13126 states and 16410 transitions. Second operand 16 states. [2018-04-05 17:09:05,997 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:09:05,997 INFO L93 Difference]: Finished difference Result 26212 states and 32566 transitions. [2018-04-05 17:09:05,997 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-04-05 17:09:05,997 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 244 [2018-04-05 17:09:05,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:09:06,017 INFO L225 Difference]: With dead ends: 26212 [2018-04-05 17:09:06,017 INFO L226 Difference]: Without dead ends: 11443 [2018-04-05 17:09:06,036 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 509 GetRequests, 479 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 172 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=236, Invalid=634, Unknown=0, NotChecked=0, Total=870 [2018-04-05 17:09:06,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11443 states. [2018-04-05 17:09:06,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11443 to 11080. [2018-04-05 17:09:06,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11080 states. [2018-04-05 17:09:06,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11080 states to 11080 states and 13174 transitions. [2018-04-05 17:09:06,827 INFO L78 Accepts]: Start accepts. Automaton has 11080 states and 13174 transitions. Word has length 244 [2018-04-05 17:09:06,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:09:06,828 INFO L459 AbstractCegarLoop]: Abstraction has 11080 states and 13174 transitions. [2018-04-05 17:09:06,828 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-04-05 17:09:06,828 INFO L276 IsEmpty]: Start isEmpty. Operand 11080 states and 13174 transitions. [2018-04-05 17:09:06,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 249 [2018-04-05 17:09:06,832 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:09:06,832 INFO L355 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 9, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:09:06,832 INFO L408 AbstractCegarLoop]: === Iteration 31 === [__U_MULTI_flockfree_____true_valid_memsafety_i__pushErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr6RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr7RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr4RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr4RequiresViolation, mainErr1RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr2AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr3AssertViolationMEMORY_FREE]=== [2018-04-05 17:09:06,832 INFO L82 PathProgramCache]: Analyzing trace with hash 331899856, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:09:06,838 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:09:06,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:09:06,930 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:09:07,077 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 558 trivial. 0 not checked. [2018-04-05 17:09:07,077 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:09:07,189 INFO L134 CoverageAnalysis]: Checked inductivity of 618 backedges. 60 proven. 0 refuted. 0 times theorem prover too weak. 558 trivial. 0 not checked. [2018-04-05 17:09:07,212 INFO L320 seRefinementStrategy]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2018-04-05 17:09:07,212 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 11 [2018-04-05 17:09:07,213 INFO L442 AbstractCegarLoop]: Interpolant automaton has 11 states [2018-04-05 17:09:07,213 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2018-04-05 17:09:07,213 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2018-04-05 17:09:07,213 INFO L87 Difference]: Start difference. First operand 11080 states and 13174 transitions. Second operand 11 states. [2018-04-05 17:09:08,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:09:08,090 INFO L93 Difference]: Finished difference Result 13035 states and 15822 transitions. [2018-04-05 17:09:08,091 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-04-05 17:09:08,091 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 248 [2018-04-05 17:09:08,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:09:08,114 INFO L225 Difference]: With dead ends: 13035 [2018-04-05 17:09:08,114 INFO L226 Difference]: Without dead ends: 13001 [2018-04-05 17:09:08,121 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 503 GetRequests, 488 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=89, Invalid=183, Unknown=0, NotChecked=0, Total=272 [2018-04-05 17:09:08,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13001 states. [2018-04-05 17:09:08,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13001 to 12246. [2018-04-05 17:09:08,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12246 states. [2018-04-05 17:09:08,935 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12246 states to 12246 states and 14532 transitions. [2018-04-05 17:09:08,935 INFO L78 Accepts]: Start accepts. Automaton has 12246 states and 14532 transitions. Word has length 248 [2018-04-05 17:09:08,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:09:08,936 INFO L459 AbstractCegarLoop]: Abstraction has 12246 states and 14532 transitions. [2018-04-05 17:09:08,936 INFO L460 AbstractCegarLoop]: Interpolant automaton has 11 states. [2018-04-05 17:09:08,936 INFO L276 IsEmpty]: Start isEmpty. Operand 12246 states and 14532 transitions. [2018-04-05 17:09:08,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 273 [2018-04-05 17:09:08,941 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:09:08,942 INFO L355 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 10, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:09:08,942 INFO L408 AbstractCegarLoop]: === Iteration 32 === [__U_MULTI_flockfree_____true_valid_memsafety_i__pushErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr6RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr7RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr4RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr4RequiresViolation, mainErr1RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr2AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr3AssertViolationMEMORY_FREE]=== [2018-04-05 17:09:08,942 INFO L82 PathProgramCache]: Analyzing trace with hash 1025819538, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:09:08,949 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:09:09,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:09:09,068 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:09:09,174 INFO L134 CoverageAnalysis]: Checked inductivity of 747 backedges. 178 proven. 11 refuted. 0 times theorem prover too weak. 558 trivial. 0 not checked. [2018-04-05 17:09:09,174 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:09:09,661 INFO L134 CoverageAnalysis]: Checked inductivity of 747 backedges. 178 proven. 11 refuted. 0 times theorem prover too weak. 558 trivial. 0 not checked. [2018-04-05 17:09:09,685 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 17:09:09,685 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 16 [2018-04-05 17:09:09,686 INFO L442 AbstractCegarLoop]: Interpolant automaton has 16 states [2018-04-05 17:09:09,686 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2018-04-05 17:09:09,686 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2018-04-05 17:09:09,686 INFO L87 Difference]: Start difference. First operand 12246 states and 14532 transitions. Second operand 16 states. [2018-04-05 17:09:10,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:09:10,934 INFO L93 Difference]: Finished difference Result 21717 states and 25989 transitions. [2018-04-05 17:09:10,934 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-04-05 17:09:10,934 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 272 [2018-04-05 17:09:10,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:09:10,954 INFO L225 Difference]: With dead ends: 21717 [2018-04-05 17:09:10,954 INFO L226 Difference]: Without dead ends: 9417 [2018-04-05 17:09:10,972 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 564 GetRequests, 534 SyntacticMatches, 2 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 173 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=236, Invalid=634, Unknown=0, NotChecked=0, Total=870 [2018-04-05 17:09:10,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9417 states. [2018-04-05 17:09:11,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9417 to 8755. [2018-04-05 17:09:11,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8755 states. [2018-04-05 17:09:11,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8755 states to 8755 states and 10323 transitions. [2018-04-05 17:09:11,654 INFO L78 Accepts]: Start accepts. Automaton has 8755 states and 10323 transitions. Word has length 272 [2018-04-05 17:09:11,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:09:11,654 INFO L459 AbstractCegarLoop]: Abstraction has 8755 states and 10323 transitions. [2018-04-05 17:09:11,654 INFO L460 AbstractCegarLoop]: Interpolant automaton has 16 states. [2018-04-05 17:09:11,654 INFO L276 IsEmpty]: Start isEmpty. Operand 8755 states and 10323 transitions. [2018-04-05 17:09:11,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 275 [2018-04-05 17:09:11,659 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:09:11,660 INFO L355 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 10, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:09:11,660 INFO L408 AbstractCegarLoop]: === Iteration 33 === [__U_MULTI_flockfree_____true_valid_memsafety_i__pushErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr6RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr7RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr4RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr4RequiresViolation, mainErr1RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr2AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr3AssertViolationMEMORY_FREE]=== [2018-04-05 17:09:11,660 INFO L82 PathProgramCache]: Analyzing trace with hash -957955639, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:09:11,666 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:09:11,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:09:11,780 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:09:11,873 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 177 proven. 11 refuted. 0 times theorem prover too weak. 558 trivial. 0 not checked. [2018-04-05 17:09:11,873 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:09:12,040 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 175 proven. 13 refuted. 0 times theorem prover too weak. 558 trivial. 0 not checked. [2018-04-05 17:09:12,065 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 17:09:12,065 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 19 [2018-04-05 17:09:12,066 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-04-05 17:09:12,066 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-04-05 17:09:12,066 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=271, Unknown=0, NotChecked=0, Total=342 [2018-04-05 17:09:12,066 INFO L87 Difference]: Start difference. First operand 8755 states and 10323 transitions. Second operand 19 states. [2018-04-05 17:09:13,549 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:09:13,550 INFO L93 Difference]: Finished difference Result 10128 states and 12202 transitions. [2018-04-05 17:09:13,550 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2018-04-05 17:09:13,550 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 274 [2018-04-05 17:09:13,550 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:09:13,570 INFO L225 Difference]: With dead ends: 10128 [2018-04-05 17:09:13,570 INFO L226 Difference]: Without dead ends: 10100 [2018-04-05 17:09:13,578 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 583 GetRequests, 539 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=510, Invalid=1560, Unknown=0, NotChecked=0, Total=2070 [2018-04-05 17:09:13,583 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10100 states. [2018-04-05 17:09:14,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10100 to 7951. [2018-04-05 17:09:14,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7951 states. [2018-04-05 17:09:14,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7951 states to 7951 states and 9377 transitions. [2018-04-05 17:09:14,352 INFO L78 Accepts]: Start accepts. Automaton has 7951 states and 9377 transitions. Word has length 274 [2018-04-05 17:09:14,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:09:14,353 INFO L459 AbstractCegarLoop]: Abstraction has 7951 states and 9377 transitions. [2018-04-05 17:09:14,353 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-04-05 17:09:14,353 INFO L276 IsEmpty]: Start isEmpty. Operand 7951 states and 9377 transitions. [2018-04-05 17:09:14,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2018-04-05 17:09:14,360 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:09:14,360 INFO L355 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 10, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:09:14,360 INFO L408 AbstractCegarLoop]: === Iteration 34 === [__U_MULTI_flockfree_____true_valid_memsafety_i__pushErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr6RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr7RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr4RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr4RequiresViolation, mainErr1RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr2AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr3AssertViolationMEMORY_FREE]=== [2018-04-05 17:09:14,361 INFO L82 PathProgramCache]: Analyzing trace with hash -1489072234, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:09:14,373 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:09:14,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:09:14,551 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:09:14,768 WARN L148 SmtUtils]: Spent 112ms on a formula simplification that was a NOOP. DAG size: 7 [2018-04-05 17:09:15,564 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 230 proven. 326 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2018-04-05 17:09:15,565 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:09:15,828 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 220 proven. 336 refuted. 0 times theorem prover too weak. 190 trivial. 0 not checked. [2018-04-05 17:09:15,863 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 17:09:15,863 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 19 [2018-04-05 17:09:15,864 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-04-05 17:09:15,864 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-04-05 17:09:15,864 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=322, Unknown=0, NotChecked=0, Total=380 [2018-04-05 17:09:15,864 INFO L87 Difference]: Start difference. First operand 7951 states and 9377 transitions. Second operand 20 states. [2018-04-05 17:09:17,401 WARN L151 SmtUtils]: Spent 155ms on a formula simplification. DAG size of input: 28 DAG size of output 22 [2018-04-05 17:09:18,207 WARN L151 SmtUtils]: Spent 146ms on a formula simplification. DAG size of input: 23 DAG size of output 17 [2018-04-05 17:09:19,073 WARN L151 SmtUtils]: Spent 109ms on a formula simplification. DAG size of input: 28 DAG size of output 20 [2018-04-05 17:09:19,919 WARN L151 SmtUtils]: Spent 131ms on a formula simplification. DAG size of input: 23 DAG size of output 17 [2018-04-05 17:09:20,161 WARN L151 SmtUtils]: Spent 106ms on a formula simplification. DAG size of input: 22 DAG size of output 14 [2018-04-05 17:09:20,903 WARN L151 SmtUtils]: Spent 155ms on a formula simplification. DAG size of input: 29 DAG size of output 19 [2018-04-05 17:09:21,400 WARN L151 SmtUtils]: Spent 169ms on a formula simplification. DAG size of input: 24 DAG size of output 16 [2018-04-05 17:09:21,751 WARN L151 SmtUtils]: Spent 115ms on a formula simplification. DAG size of input: 21 DAG size of output 13 [2018-04-05 17:09:22,461 WARN L151 SmtUtils]: Spent 145ms on a formula simplification. DAG size of input: 32 DAG size of output 22 [2018-04-05 17:09:23,157 WARN L151 SmtUtils]: Spent 163ms on a formula simplification. DAG size of input: 26 DAG size of output 18 [2018-04-05 17:09:23,559 WARN L151 SmtUtils]: Spent 171ms on a formula simplification. DAG size of input: 31 DAG size of output 23 [2018-04-05 17:09:24,067 WARN L151 SmtUtils]: Spent 137ms on a formula simplification. DAG size of input: 26 DAG size of output 20 [2018-04-05 17:09:24,778 WARN L151 SmtUtils]: Spent 172ms on a formula simplification. DAG size of input: 30 DAG size of output 20 [2018-04-05 17:09:25,432 WARN L151 SmtUtils]: Spent 258ms on a formula simplification. DAG size of input: 26 DAG size of output 20 [2018-04-05 17:09:26,541 WARN L151 SmtUtils]: Spent 122ms on a formula simplification. DAG size of input: 26 DAG size of output 18 [2018-04-05 17:09:26,755 WARN L151 SmtUtils]: Spent 119ms on a formula simplification. DAG size of input: 22 DAG size of output 18 [2018-04-05 17:09:27,167 WARN L151 SmtUtils]: Spent 135ms on a formula simplification. DAG size of input: 27 DAG size of output 19 [2018-04-05 17:09:27,882 WARN L151 SmtUtils]: Spent 144ms on a formula simplification. DAG size of input: 27 DAG size of output 19 [2018-04-05 17:09:28,441 WARN L151 SmtUtils]: Spent 158ms on a formula simplification. DAG size of input: 32 DAG size of output 22 [2018-04-05 17:09:28,761 WARN L151 SmtUtils]: Spent 136ms on a formula simplification. DAG size of input: 22 DAG size of output 18 [2018-04-05 17:09:29,831 WARN L151 SmtUtils]: Spent 140ms on a formula simplification. DAG size of input: 29 DAG size of output 21 [2018-04-05 17:09:30,223 WARN L151 SmtUtils]: Spent 122ms on a formula simplification. DAG size of input: 30 DAG size of output 22 [2018-04-05 17:09:30,507 WARN L151 SmtUtils]: Spent 103ms on a formula simplification. DAG size of input: 27 DAG size of output 19 [2018-04-05 17:09:32,008 WARN L151 SmtUtils]: Spent 193ms on a formula simplification. DAG size of input: 28 DAG size of output 20 [2018-04-05 17:09:32,431 WARN L151 SmtUtils]: Spent 243ms on a formula simplification. DAG size of input: 27 DAG size of output 23 [2018-04-05 17:09:33,178 WARN L151 SmtUtils]: Spent 191ms on a formula simplification. DAG size of input: 22 DAG size of output 14 [2018-04-05 17:09:34,374 WARN L148 SmtUtils]: Spent 129ms on a formula simplification that was a NOOP. DAG size: 17 [2018-04-05 17:09:35,684 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:09:35,684 INFO L93 Difference]: Finished difference Result 8991 states and 10564 transitions. [2018-04-05 17:09:35,685 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2018-04-05 17:09:35,685 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 277 [2018-04-05 17:09:35,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:09:35,720 INFO L225 Difference]: With dead ends: 8991 [2018-04-05 17:09:35,721 INFO L226 Difference]: Without dead ends: 8989 [2018-04-05 17:09:35,726 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 636 GetRequests, 556 SyntacticMatches, 6 SemanticMatches, 74 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1517 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=1210, Invalid=4490, Unknown=0, NotChecked=0, Total=5700 [2018-04-05 17:09:35,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8989 states. [2018-04-05 17:09:36,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8989 to 8244. [2018-04-05 17:09:36,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8244 states. [2018-04-05 17:09:36,655 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8244 states to 8244 states and 9707 transitions. [2018-04-05 17:09:36,655 INFO L78 Accepts]: Start accepts. Automaton has 8244 states and 9707 transitions. Word has length 277 [2018-04-05 17:09:36,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:09:36,656 INFO L459 AbstractCegarLoop]: Abstraction has 8244 states and 9707 transitions. [2018-04-05 17:09:36,656 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-04-05 17:09:36,656 INFO L276 IsEmpty]: Start isEmpty. Operand 8244 states and 9707 transitions. [2018-04-05 17:09:36,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2018-04-05 17:09:36,664 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:09:36,665 INFO L355 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 10, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:09:36,665 INFO L408 AbstractCegarLoop]: === Iteration 35 === [__U_MULTI_flockfree_____true_valid_memsafety_i__pushErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr6RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr7RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr4RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr4RequiresViolation, mainErr1RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr2AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr3AssertViolationMEMORY_FREE]=== [2018-04-05 17:09:36,665 INFO L82 PathProgramCache]: Analyzing trace with hash -1489072233, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:09:36,685 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:09:36,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:09:36,860 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:09:38,307 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 128 proven. 390 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2018-04-05 17:09:38,308 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:09:41,519 WARN L148 SmtUtils]: Spent 102ms on a formula simplification that was a NOOP. DAG size: 16 [2018-04-05 17:09:42,035 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 116 proven. 402 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2018-04-05 17:09:42,072 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 17:09:42,072 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 27 [2018-04-05 17:09:42,073 INFO L442 AbstractCegarLoop]: Interpolant automaton has 28 states [2018-04-05 17:09:42,073 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2018-04-05 17:09:42,073 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=663, Unknown=0, NotChecked=0, Total=756 [2018-04-05 17:09:42,074 INFO L87 Difference]: Start difference. First operand 8244 states and 9707 transitions. Second operand 28 states. [2018-04-05 17:09:45,810 WARN L151 SmtUtils]: Spent 172ms on a formula simplification. DAG size of input: 45 DAG size of output 39 [2018-04-05 17:09:47,301 WARN L151 SmtUtils]: Spent 116ms on a formula simplification. DAG size of input: 36 DAG size of output 28 [2018-04-05 17:09:48,102 WARN L148 SmtUtils]: Spent 162ms on a formula simplification that was a NOOP. DAG size: 45 [2018-04-05 17:09:48,444 WARN L151 SmtUtils]: Spent 149ms on a formula simplification. DAG size of input: 30 DAG size of output 26 [2018-04-05 17:09:49,915 WARN L151 SmtUtils]: Spent 133ms on a formula simplification. DAG size of input: 33 DAG size of output 25 [2018-04-05 17:09:55,439 WARN L151 SmtUtils]: Spent 278ms on a formula simplification. DAG size of input: 56 DAG size of output 42 [2018-04-05 17:09:56,139 WARN L151 SmtUtils]: Spent 404ms on a formula simplification. DAG size of input: 52 DAG size of output 42 [2018-04-05 17:09:56,536 WARN L151 SmtUtils]: Spent 188ms on a formula simplification. DAG size of input: 38 DAG size of output 34 [2018-04-05 17:09:56,980 WARN L151 SmtUtils]: Spent 211ms on a formula simplification. DAG size of input: 45 DAG size of output 37 [2018-04-05 17:09:57,435 WARN L151 SmtUtils]: Spent 223ms on a formula simplification. DAG size of input: 43 DAG size of output 35 [2018-04-05 17:09:58,006 WARN L151 SmtUtils]: Spent 243ms on a formula simplification. DAG size of input: 46 DAG size of output 42 [2018-04-05 17:09:58,360 WARN L151 SmtUtils]: Spent 240ms on a formula simplification. DAG size of input: 40 DAG size of output 32 [2018-04-05 17:09:58,747 WARN L151 SmtUtils]: Spent 267ms on a formula simplification. DAG size of input: 40 DAG size of output 39 [2018-04-05 17:09:59,103 WARN L151 SmtUtils]: Spent 124ms on a formula simplification. DAG size of input: 36 DAG size of output 28 [2018-04-05 17:09:59,735 WARN L151 SmtUtils]: Spent 209ms on a formula simplification. DAG size of input: 53 DAG size of output 38 [2018-04-05 17:10:00,545 WARN L151 SmtUtils]: Spent 333ms on a formula simplification. DAG size of input: 51 DAG size of output 43 [2018-04-05 17:10:01,235 WARN L151 SmtUtils]: Spent 330ms on a formula simplification. DAG size of input: 50 DAG size of output 42 [2018-04-05 17:10:02,384 WARN L151 SmtUtils]: Spent 333ms on a formula simplification. DAG size of input: 38 DAG size of output 34 [2018-04-05 17:10:03,677 WARN L151 SmtUtils]: Spent 295ms on a formula simplification. DAG size of input: 56 DAG size of output 41 [2018-04-05 17:10:04,184 WARN L151 SmtUtils]: Spent 321ms on a formula simplification. DAG size of input: 47 DAG size of output 39 [2018-04-05 17:10:04,887 WARN L151 SmtUtils]: Spent 414ms on a formula simplification. DAG size of input: 42 DAG size of output 41 [2018-04-05 17:10:05,207 WARN L151 SmtUtils]: Spent 139ms on a formula simplification. DAG size of input: 44 DAG size of output 36 [2018-04-05 17:10:05,739 WARN L151 SmtUtils]: Spent 265ms on a formula simplification. DAG size of input: 46 DAG size of output 38 [2018-04-05 17:10:06,107 WARN L151 SmtUtils]: Spent 230ms on a formula simplification. DAG size of input: 30 DAG size of output 29 [2018-04-05 17:10:06,650 WARN L151 SmtUtils]: Spent 336ms on a formula simplification. DAG size of input: 53 DAG size of output 45 [2018-04-05 17:10:07,356 WARN L151 SmtUtils]: Spent 233ms on a formula simplification. DAG size of input: 44 DAG size of output 37 [2018-04-05 17:10:07,690 WARN L151 SmtUtils]: Spent 185ms on a formula simplification. DAG size of input: 41 DAG size of output 33 [2018-04-05 17:10:09,446 WARN L151 SmtUtils]: Spent 273ms on a formula simplification. DAG size of input: 52 DAG size of output 42 [2018-04-05 17:10:09,827 WARN L151 SmtUtils]: Spent 260ms on a formula simplification. DAG size of input: 47 DAG size of output 39 [2018-04-05 17:10:10,309 WARN L151 SmtUtils]: Spent 262ms on a formula simplification. DAG size of input: 51 DAG size of output 41 [2018-04-05 17:10:11,040 WARN L151 SmtUtils]: Spent 275ms on a formula simplification. DAG size of input: 49 DAG size of output 41 [2018-04-05 17:10:12,333 WARN L151 SmtUtils]: Spent 350ms on a formula simplification. DAG size of input: 46 DAG size of output 36 [2018-04-05 17:10:13,107 WARN L151 SmtUtils]: Spent 247ms on a formula simplification. DAG size of input: 58 DAG size of output 44 [2018-04-05 17:10:13,532 WARN L151 SmtUtils]: Spent 262ms on a formula simplification. DAG size of input: 54 DAG size of output 44 [2018-04-05 17:10:13,869 WARN L151 SmtUtils]: Spent 203ms on a formula simplification. DAG size of input: 40 DAG size of output 36 [2018-04-05 17:10:14,529 WARN L151 SmtUtils]: Spent 288ms on a formula simplification. DAG size of input: 54 DAG size of output 41 [2018-04-05 17:10:15,177 WARN L151 SmtUtils]: Spent 381ms on a formula simplification. DAG size of input: 46 DAG size of output 38 [2018-04-05 17:10:15,562 WARN L151 SmtUtils]: Spent 187ms on a formula simplification. DAG size of input: 39 DAG size of output 33 [2018-04-05 17:10:15,946 WARN L151 SmtUtils]: Spent 244ms on a formula simplification. DAG size of input: 48 DAG size of output 44 [2018-04-05 17:10:17,260 WARN L151 SmtUtils]: Spent 471ms on a formula simplification. DAG size of input: 44 DAG size of output 34 [2018-04-05 17:10:17,729 WARN L151 SmtUtils]: Spent 226ms on a formula simplification. DAG size of input: 42 DAG size of output 34 [2018-04-05 17:10:18,447 WARN L151 SmtUtils]: Spent 197ms on a formula simplification. DAG size of input: 43 DAG size of output 35 [2018-04-05 17:10:18,973 WARN L151 SmtUtils]: Spent 273ms on a formula simplification. DAG size of input: 49 DAG size of output 39 [2018-04-05 17:10:19,478 WARN L151 SmtUtils]: Spent 300ms on a formula simplification. DAG size of input: 51 DAG size of output 37 [2018-04-05 17:10:19,890 WARN L151 SmtUtils]: Spent 180ms on a formula simplification. DAG size of input: 33 DAG size of output 29 [2018-04-05 17:10:20,226 WARN L151 SmtUtils]: Spent 210ms on a formula simplification. DAG size of input: 41 DAG size of output 37 [2018-04-05 17:10:20,676 WARN L151 SmtUtils]: Spent 294ms on a formula simplification. DAG size of input: 47 DAG size of output 37 [2018-04-05 17:10:21,033 WARN L151 SmtUtils]: Spent 239ms on a formula simplification. DAG size of input: 40 DAG size of output 32 [2018-04-05 17:10:21,718 WARN L151 SmtUtils]: Spent 321ms on a formula simplification. DAG size of input: 35 DAG size of output 34 [2018-04-05 17:10:22,175 WARN L151 SmtUtils]: Spent 238ms on a formula simplification. DAG size of input: 54 DAG size of output 43 [2018-04-05 17:10:22,587 WARN L151 SmtUtils]: Spent 154ms on a formula simplification. DAG size of input: 46 DAG size of output 38 [2018-04-05 17:10:23,669 WARN L151 SmtUtils]: Spent 529ms on a formula simplification. DAG size of input: 57 DAG size of output 46 [2018-04-05 17:10:27,309 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:10:27,396 INFO L93 Difference]: Finished difference Result 19598 states and 23188 transitions. [2018-04-05 17:10:27,396 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 119 states. [2018-04-05 17:10:27,396 INFO L78 Accepts]: Start accepts. Automaton has 28 states. Word has length 277 [2018-04-05 17:10:27,397 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:10:27,466 INFO L225 Difference]: With dead ends: 19598 [2018-04-05 17:10:27,466 INFO L226 Difference]: Without dead ends: 19491 [2018-04-05 17:10:27,484 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 718 GetRequests, 568 SyntacticMatches, 9 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6517 ImplicationChecksByTransitivity, 26.5s TimeCoverageRelationStatistics Valid=3655, Invalid=16651, Unknown=0, NotChecked=0, Total=20306 [2018-04-05 17:10:27,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19491 states. [2018-04-05 17:10:29,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19491 to 17792. [2018-04-05 17:10:29,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17792 states. [2018-04-05 17:10:29,594 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17792 states to 17792 states and 21106 transitions. [2018-04-05 17:10:29,595 INFO L78 Accepts]: Start accepts. Automaton has 17792 states and 21106 transitions. Word has length 277 [2018-04-05 17:10:29,595 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:10:29,595 INFO L459 AbstractCegarLoop]: Abstraction has 17792 states and 21106 transitions. [2018-04-05 17:10:29,595 INFO L460 AbstractCegarLoop]: Interpolant automaton has 28 states. [2018-04-05 17:10:29,595 INFO L276 IsEmpty]: Start isEmpty. Operand 17792 states and 21106 transitions. [2018-04-05 17:10:29,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2018-04-05 17:10:29,605 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:10:29,605 INFO L355 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 10, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:10:29,605 INFO L408 AbstractCegarLoop]: === Iteration 36 === [__U_MULTI_flockfree_____true_valid_memsafety_i__pushErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr6RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr7RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr4RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr4RequiresViolation, mainErr1RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr2AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr3AssertViolationMEMORY_FREE]=== [2018-04-05 17:10:29,606 INFO L82 PathProgramCache]: Analyzing trace with hash 1083399618, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:10:29,619 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:10:29,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:10:29,849 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:10:30,473 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 128 proven. 390 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2018-04-05 17:10:30,474 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:10:31,909 INFO L134 CoverageAnalysis]: Checked inductivity of 746 backedges. 116 proven. 402 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2018-04-05 17:10:32,155 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 17:10:32,155 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 19 [2018-04-05 17:10:32,156 INFO L442 AbstractCegarLoop]: Interpolant automaton has 19 states [2018-04-05 17:10:32,156 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2018-04-05 17:10:32,156 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2018-04-05 17:10:32,156 INFO L87 Difference]: Start difference. First operand 17792 states and 21106 transitions. Second operand 19 states. [2018-04-05 17:10:37,555 WARN L151 SmtUtils]: Spent 132ms on a formula simplification. DAG size of input: 19 DAG size of output 17 [2018-04-05 17:10:38,444 WARN L151 SmtUtils]: Spent 104ms on a formula simplification. DAG size of input: 16 DAG size of output 14 [2018-04-05 17:10:41,534 WARN L151 SmtUtils]: Spent 141ms on a formula simplification. DAG size of input: 18 DAG size of output 16 [2018-04-05 17:10:44,164 WARN L148 SmtUtils]: Spent 110ms on a formula simplification that was a NOOP. DAG size: 15 [2018-04-05 17:10:45,350 WARN L151 SmtUtils]: Spent 115ms on a formula simplification. DAG size of input: 19 DAG size of output 17 [2018-04-05 17:10:46,188 WARN L151 SmtUtils]: Spent 399ms on a formula simplification. DAG size of input: 19 DAG size of output 17 [2018-04-05 17:10:46,708 WARN L151 SmtUtils]: Spent 142ms on a formula simplification. DAG size of input: 19 DAG size of output 17 [2018-04-05 17:10:49,145 WARN L151 SmtUtils]: Spent 126ms on a formula simplification. DAG size of input: 21 DAG size of output 19 [2018-04-05 17:10:52,736 WARN L148 SmtUtils]: Spent 106ms on a formula simplification that was a NOOP. DAG size: 20 [2018-04-05 17:10:54,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:10:54,281 INFO L93 Difference]: Finished difference Result 35757 states and 42495 transitions. [2018-04-05 17:10:54,281 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2018-04-05 17:10:54,281 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 278 [2018-04-05 17:10:54,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:10:54,317 INFO L225 Difference]: With dead ends: 35757 [2018-04-05 17:10:54,317 INFO L226 Difference]: Without dead ends: 18730 [2018-04-05 17:10:54,343 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 645 GetRequests, 561 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2146 ImplicationChecksByTransitivity, 8.0s TimeCoverageRelationStatistics Valid=1379, Invalid=5931, Unknown=0, NotChecked=0, Total=7310 [2018-04-05 17:10:54,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18730 states. [2018-04-05 17:10:55,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18730 to 17626. [2018-04-05 17:10:55,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17626 states. [2018-04-05 17:10:55,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17626 states to 17626 states and 20906 transitions. [2018-04-05 17:10:55,767 INFO L78 Accepts]: Start accepts. Automaton has 17626 states and 20906 transitions. Word has length 278 [2018-04-05 17:10:55,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:10:55,768 INFO L459 AbstractCegarLoop]: Abstraction has 17626 states and 20906 transitions. [2018-04-05 17:10:55,768 INFO L460 AbstractCegarLoop]: Interpolant automaton has 19 states. [2018-04-05 17:10:55,768 INFO L276 IsEmpty]: Start isEmpty. Operand 17626 states and 20906 transitions. [2018-04-05 17:10:55,781 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2018-04-05 17:10:55,781 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:10:55,781 INFO L355 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 10, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:10:55,781 INFO L408 AbstractCegarLoop]: === Iteration 37 === [__U_MULTI_flockfree_____true_valid_memsafety_i__pushErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr6RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr7RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr4RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr4RequiresViolation, mainErr1RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr2AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr3AssertViolationMEMORY_FREE]=== [2018-04-05 17:10:55,782 INFO L82 PathProgramCache]: Analyzing trace with hash 430512857, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:10:55,795 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:10:55,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:10:55,969 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:10:56,312 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-04-05 17:10:56,314 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 10 treesize of output 9 [2018-04-05 17:10:56,315 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 17:10:56,317 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 17:10:56,337 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 10 [2018-04-05 17:10:56,346 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2018-04-05 17:10:56,346 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-04-05 17:10:56,348 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 17:10:56,354 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-04-05 17:10:56,354 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 2 variables, input treesize:33, output treesize:25 [2018-04-05 17:10:56,702 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-04-05 17:10:56,706 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-04-05 17:10:56,706 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-05 17:10:56,719 INFO L267 ElimStorePlain]: Start of recursive call 2: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 17:10:56,803 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2018-04-05 17:10:56,827 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 3 [2018-04-05 17:10:56,827 INFO L267 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2018-04-05 17:10:56,862 INFO L267 ElimStorePlain]: Start of recursive call 4: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-05 17:10:56,980 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2018-04-05 17:10:56,980 INFO L202 ElimStorePlain]: Needed 5 recursive calls to eliminate 3 variables, input treesize:29, output treesize:7 [2018-04-05 17:10:57,512 WARN L148 SmtUtils]: Spent 115ms on a formula simplification that was a NOOP. DAG size: 6 [2018-04-05 17:10:57,715 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 117 proven. 404 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2018-04-05 17:10:57,715 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:10:58,181 WARN L148 SmtUtils]: Spent 121ms on a formula simplification that was a NOOP. DAG size: 37 [2018-04-05 17:10:58,743 WARN L148 SmtUtils]: Spent 161ms on a formula simplification that was a NOOP. DAG size: 25 [2018-04-05 17:11:00,989 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 31 proven. 490 refuted. 0 times theorem prover too weak. 228 trivial. 0 not checked. [2018-04-05 17:11:01,011 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-05 17:11:01,012 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 32 [2018-04-05 17:11:01,012 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-04-05 17:11:01,012 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-04-05 17:11:01,013 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=820, Unknown=0, NotChecked=0, Total=992 [2018-04-05 17:11:01,013 INFO L87 Difference]: Start difference. First operand 17626 states and 20906 transitions. Second operand 32 states. [2018-04-05 17:11:01,488 WARN L148 SmtUtils]: Spent 121ms on a formula simplification that was a NOOP. DAG size: 19 [2018-04-05 17:11:01,876 WARN L151 SmtUtils]: Spent 151ms on a formula simplification. DAG size of input: 21 DAG size of output 20 [2018-04-05 17:11:02,548 WARN L151 SmtUtils]: Spent 128ms on a formula simplification. DAG size of input: 22 DAG size of output 21 [2018-04-05 17:11:03,100 WARN L151 SmtUtils]: Spent 131ms on a formula simplification. DAG size of input: 20 DAG size of output 19 [2018-04-05 17:11:03,755 WARN L151 SmtUtils]: Spent 215ms on a formula simplification. DAG size of input: 22 DAG size of output 21 [2018-04-05 17:11:08,969 WARN L151 SmtUtils]: Spent 233ms on a formula simplification. DAG size of input: 33 DAG size of output 32 [2018-04-05 17:11:09,887 WARN L151 SmtUtils]: Spent 600ms on a formula simplification. DAG size of input: 39 DAG size of output 33 [2018-04-05 17:11:10,868 WARN L151 SmtUtils]: Spent 236ms on a formula simplification. DAG size of input: 38 DAG size of output 37 [2018-04-05 17:11:11,178 WARN L151 SmtUtils]: Spent 171ms on a formula simplification. DAG size of input: 31 DAG size of output 30 [2018-04-05 17:11:11,542 WARN L151 SmtUtils]: Spent 212ms on a formula simplification. DAG size of input: 42 DAG size of output 41 [2018-04-05 17:11:11,782 WARN L151 SmtUtils]: Spent 188ms on a formula simplification. DAG size of input: 35 DAG size of output 34 [2018-04-05 17:11:15,894 WARN L148 SmtUtils]: Spent 138ms on a formula simplification that was a NOOP. DAG size: 36 [2018-04-05 17:11:16,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-05 17:11:16,572 INFO L93 Difference]: Finished difference Result 25856 states and 31023 transitions. [2018-04-05 17:11:16,572 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2018-04-05 17:11:16,572 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 286 [2018-04-05 17:11:16,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-05 17:11:16,621 INFO L225 Difference]: With dead ends: 25856 [2018-04-05 17:11:16,622 INFO L226 Difference]: Without dead ends: 25748 [2018-04-05 17:11:16,636 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 675 GetRequests, 560 SyntacticMatches, 3 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4123 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=1811, Invalid=11071, Unknown=0, NotChecked=0, Total=12882 [2018-04-05 17:11:16,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25748 states. [2018-04-05 17:11:20,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25748 to 23520. [2018-04-05 17:11:20,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23520 states. [2018-04-05 17:11:20,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23520 states to 23520 states and 28023 transitions. [2018-04-05 17:11:20,096 INFO L78 Accepts]: Start accepts. Automaton has 23520 states and 28023 transitions. Word has length 286 [2018-04-05 17:11:20,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-05 17:11:20,097 INFO L459 AbstractCegarLoop]: Abstraction has 23520 states and 28023 transitions. [2018-04-05 17:11:20,100 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-04-05 17:11:20,100 INFO L276 IsEmpty]: Start isEmpty. Operand 23520 states and 28023 transitions. [2018-04-05 17:11:20,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 288 [2018-04-05 17:11:20,110 INFO L347 BasicCegarLoop]: Found error trace [2018-04-05 17:11:20,110 INFO L355 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 10, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-05 17:11:20,110 INFO L408 AbstractCegarLoop]: === Iteration 38 === [__U_MULTI_flockfree_____true_valid_memsafety_i__pushErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr6RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr7RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__pushErr4RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr3RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr1RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr5RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr0RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr2RequiresViolation, __U_MULTI_flockfree_____true_valid_memsafety_i__popErr4RequiresViolation, mainErr1RequiresViolation, mainErr4EnsuresViolationMEMORY_LEAK, mainErr2AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr3AssertViolationMEMORY_FREE]=== [2018-04-05 17:11:20,111 INFO L82 PathProgramCache]: Analyzing trace with hash 460995295, now seen corresponding path program 1 times No working directory specified, using /storage/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 39 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2018-04-05 17:11:20,129 INFO L68 tionRefinementEngine]: Using refinement strategy FixedRefinementStrategy [2018-04-05 17:11:20,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-05 17:11:20,347 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-05 17:11:21,211 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 17:11:21,213 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2018-04-05 17:11:21,213 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 17:11:21,245 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-04-05 17:11:21,246 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-05 17:11:21,647 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 17:11:21,648 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2018-04-05 17:11:21,648 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 17:11:21,654 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-04-05 17:11:21,654 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-05 17:11:21,700 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 17:11:21,701 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2018-04-05 17:11:21,701 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 17:11:21,706 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-04-05 17:11:21,706 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-05 17:11:21,901 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 17:11:21,902 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2018-04-05 17:11:21,902 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 17:11:21,942 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-04-05 17:11:21,943 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-05 17:11:22,188 INFO L700 Elim1Store]: detected not equals via solver [2018-04-05 17:11:22,189 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 5 [2018-04-05 17:11:22,190 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-05 17:11:22,213 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-04-05 17:11:22,214 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:9 [2018-04-05 17:11:22,534 WARN L1033 $PredicateComparison]: unable to prove that (exists ((~__U_MULTI_flockfree_____true_valid_memsafety_i__garbage~0.base Int)) (and (= (select |c_old(#valid)| ~__U_MULTI_flockfree_____true_valid_memsafety_i__garbage~0.base) 0) (= |c_#valid| (store |c_old(#valid)| ~__U_MULTI_flockfree_____true_valid_memsafety_i__garbage~0.base 0)))) is different from true [2018-04-05 17:11:22,781 INFO L134 CoverageAnalysis]: Checked inductivity of 748 backedges. 32 proven. 486 refuted. 0 times theorem prover too weak. 228 trivial. 2 not checked. [2018-04-05 17:11:22,782 INFO L314 TraceCheckSpWp]: Computing backward predicates... [2018-04-05 17:11:24,901 WARN L1011 $PredicateComparison]: unable to prove that (forall ((|v___U_MULTI_flockfree_____true_valid_memsafety_i__push_#t~malloc2.base_83| Int)) (or (= (store |c_#valid| |v___U_MULTI_flockfree_____true_valid_memsafety_i__push_#t~malloc2.base_83| 0) |c_old(#valid)|) (not (= 0 (select |c_#valid| |v___U_MULTI_flockfree_____true_valid_memsafety_i__push_#t~malloc2.base_83|))))) is different from false [2018-04-05 17:11:24,909 FATAL L292 ToolchainWalker]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: var is still there: |v_old(#valid)_BEFORE_CALL_22| term size 19 at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:452) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimOneRec(ElimStorePlain.java:221) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.doElimAllRec(ElimStorePlain.java:247) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.ElimStorePlain.elimAllRec(ElimStorePlain.java:199) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.elim(PartialQuantifierElimination.java:270) at de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.PartialQuantifierElimination.tryToEliminate(PartialQuantifierElimination.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer$QuantifierEliminationPostprocessor.postprocess(IterativePredicateTransformer.java:243) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.applyPostprocessors(IterativePredicateTransformer.java:445) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeBackwardSequence(IterativePredicateTransformer.java:421) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.predicates.IterativePredicateTransformer.computeWeakestPreconditionSequence(IterativePredicateTransformer.java:292) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolantsUsingUnsatCore(TraceCheckSpWp.java:328) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.computeInterpolants(TraceCheckSpWp.java:173) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.singletracecheck.TraceCheckSpWp.(TraceCheckSpWp.java:160) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.constructForwardBackward(TraceCheckConstructor.java:237) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceCheckConstructor.get(TraceCheckConstructor.java:185) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.FixedRefinementStrategy.getTraceCheck(FixedRefinementStrategy.java:131) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.checkFeasibility(BaseRefinementStrategy.java:231) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.BaseRefinementStrategy.executeStrategy(BaseRefinementStrategy.java:205) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:69) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:408) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:417) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:363) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:304) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:150) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:118) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:119) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:324) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.runToolchainDefault(DefaultToolchainJob.java:221) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.BasicToolchainJob.run(BasicToolchainJob.java:134) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2018-04-05 17:11:24,912 INFO L168 Benchmark]: Toolchain (without parser) took 215843.43 ms. Allocated memory was 315.1 MB in the beginning and 2.2 GB in the end (delta: 1.9 GB). Free memory was 253.6 MB in the beginning and 979.3 MB in the end (delta: -725.8 MB). Peak memory consumption was 1.2 GB. Max. memory is 5.3 GB. [2018-04-05 17:11:24,914 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 315.1 MB. Free memory is still 277.4 MB. There was no memory consumed. Max. memory is 5.3 GB. [2018-04-05 17:11:24,914 INFO L168 Benchmark]: CACSL2BoogieTranslator took 743.27 ms. Allocated memory is still 315.1 MB. Free memory was 252.6 MB in the beginning and 226.6 MB in the end (delta: 25.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 5.3 GB. [2018-04-05 17:11:24,914 INFO L168 Benchmark]: Boogie Preprocessor took 96.60 ms. Allocated memory is still 315.1 MB. Free memory was 226.6 MB in the beginning and 224.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. [2018-04-05 17:11:24,915 INFO L168 Benchmark]: RCFGBuilder took 1421.70 ms. Allocated memory was 315.1 MB in the beginning and 485.5 MB in the end (delta: 170.4 MB). Free memory was 223.7 MB in the beginning and 411.0 MB in the end (delta: -187.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 5.3 GB. [2018-04-05 17:11:24,915 INFO L168 Benchmark]: TraceAbstraction took 213564.90 ms. Allocated memory was 485.5 MB in the beginning and 2.2 GB in the end (delta: 1.7 GB). Free memory was 411.0 MB in the beginning and 979.3 MB in the end (delta: -568.3 MB). Peak memory consumption was 1.2 GB. Max. memory is 5.3 GB. [2018-04-05 17:11:24,918 INFO L344 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 315.1 MB. Free memory is still 277.4 MB. There was no memory consumed. Max. memory is 5.3 GB. * CACSL2BoogieTranslator took 743.27 ms. Allocated memory is still 315.1 MB. Free memory was 252.6 MB in the beginning and 226.6 MB in the end (delta: 25.9 MB). Peak memory consumption was 25.9 MB. Max. memory is 5.3 GB. * Boogie Preprocessor took 96.60 ms. Allocated memory is still 315.1 MB. Free memory was 226.6 MB in the beginning and 224.7 MB in the end (delta: 2.0 MB). Peak memory consumption was 2.0 MB. Max. memory is 5.3 GB. * RCFGBuilder took 1421.70 ms. Allocated memory was 315.1 MB in the beginning and 485.5 MB in the end (delta: 170.4 MB). Free memory was 223.7 MB in the beginning and 411.0 MB in the end (delta: -187.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 5.3 GB. * TraceAbstraction took 213564.90 ms. Allocated memory was 485.5 MB in the beginning and 2.2 GB in the end (delta: 1.7 GB). Free memory was 411.0 MB in the beginning and 979.3 MB in the end (delta: -568.3 MB). Peak memory consumption was 1.2 GB. Max. memory is 5.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: var is still there: |v_old(#valid)_BEFORE_CALL_22| term size 19 de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: var is still there: |v_old(#valid)_BEFORE_CALL_22| term size 19: de.uni_freiburg.informatik.ultimate.modelcheckerutils.smt.Elim1Store.elim1(Elim1Store.java:452) RESULT: Ultimate could not prove your program: Toolchain returned no result. Written .csv to /storage/ultimate/releaseScripts/default/UAutomizer-linux/../../../releaseScripts/default/UAutomizer-linux/csv/lockfree-3.0_true-valid-memsafety.i_svcomp-DerefFreeMemtrack-32bit-Automizer_Fixed_noBitfields+AI_EQ_SS.epf_AutomizerC.xml/Csv-Benchmark-0-2018-04-05_17-11-24-929.csv Received shutdown request...