java -Xmx6000000000 -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data ./data --generate-csv --csv-dir ../../../releaseScripts/default/UAutomizer-linux/csv --cacsl2boogietranslator.bitprecise.bitfields false -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf -i ../../../trunk/examples/svcomp/memsafety/960521-1_false-valid-free.i -------------------------------------------------------------------------------- This is Ultimate 0.1.23-408c70d-m [2018-04-12 11:20:39,190 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-04-12 11:20:39,191 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-04-12 11:20:39,204 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-04-12 11:20:39,204 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-04-12 11:20:39,205 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-04-12 11:20:39,205 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-04-12 11:20:39,207 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-04-12 11:20:39,209 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-04-12 11:20:39,209 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-04-12 11:20:39,210 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-04-12 11:20:39,210 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-04-12 11:20:39,211 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-04-12 11:20:39,212 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-04-12 11:20:39,213 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-04-12 11:20:39,214 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-04-12 11:20:39,216 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-04-12 11:20:39,217 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-04-12 11:20:39,218 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-04-12 11:20:39,219 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-04-12 11:20:39,221 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-04-12 11:20:39,221 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-04-12 11:20:39,221 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-04-12 11:20:39,222 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-04-12 11:20:39,223 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-04-12 11:20:39,224 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-04-12 11:20:39,224 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-04-12 11:20:39,224 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-04-12 11:20:39,225 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-04-12 11:20:39,225 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-04-12 11:20:39,226 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-04-12 11:20:39,226 INFO L98 SettingsManager]: Beginning loading settings from /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/cade18-smtinterpol/svcomp-DerefFreeMemtrack-32bit-Automizer_Camel.epf [2018-04-12 11:20:39,235 INFO L110 SettingsManager]: Loading preferences was successful [2018-04-12 11:20:39,235 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-04-12 11:20:39,236 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-04-12 11:20:39,236 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-04-12 11:20:39,236 INFO L133 SettingsManager]: * Use SBE=true [2018-04-12 11:20:39,237 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-04-12 11:20:39,237 INFO L133 SettingsManager]: * sizeof long=4 [2018-04-12 11:20:39,237 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-04-12 11:20:39,237 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-04-12 11:20:39,237 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-04-12 11:20:39,237 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-04-12 11:20:39,237 INFO L133 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2018-04-12 11:20:39,238 INFO L133 SettingsManager]: * Bitprecise bitfields=true [2018-04-12 11:20:39,238 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2018-04-12 11:20:39,238 INFO L133 SettingsManager]: * sizeof long double=12 [2018-04-12 11:20:39,238 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-04-12 11:20:39,238 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-04-12 11:20:39,238 INFO L133 SettingsManager]: * To the following directory=./dump/ [2018-04-12 11:20:39,239 INFO L133 SettingsManager]: * SMT solver=External_DefaultMode [2018-04-12 11:20:39,239 INFO L133 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-12 11:20:39,239 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-04-12 11:20:39,239 INFO L133 SettingsManager]: * Interpolant automaton=TWOTRACK [2018-04-12 11:20:39,239 INFO L133 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2018-04-12 11:20:39,239 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Bitprecise bitfields -> false [2018-04-12 11:20:39,267 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-04-12 11:20:39,277 INFO L266 ainManager$Toolchain]: [Toolchain 1]: Parser(s) successfully (re)initialized [2018-04-12 11:20:39,280 INFO L222 ainManager$Toolchain]: [Toolchain 1]: Toolchain data selected. [2018-04-12 11:20:39,281 INFO L271 PluginConnector]: Initializing CDTParser... [2018-04-12 11:20:39,281 INFO L276 PluginConnector]: CDTParser initialized [2018-04-12 11:20:39,282 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/memsafety/960521-1_false-valid-free.i [2018-04-12 11:20:39,587 INFO L225 CDTParser]: Created temporary CDT project at /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAGe0ec58c5f [2018-04-12 11:20:39,720 INFO L287 CDTParser]: IsIndexed: true [2018-04-12 11:20:39,721 INFO L288 CDTParser]: Found 1 translation units. [2018-04-12 11:20:39,721 INFO L168 CDTParser]: Scanning 960521-1_false-valid-free.i [2018-04-12 11:20:39,729 INFO L210 ultiparseSymbolTable]: Include resolver: [2018-04-12 11:20:39,730 INFO L215 ultiparseSymbolTable]: [2018-04-12 11:20:39,730 INFO L218 ultiparseSymbolTable]: Function table: [2018-04-12 11:20:39,730 INFO L221 ultiparseSymbolTable]: Function definition of __U_MULTI_f_________false_valid_free_i__foo ('foo') in 960521-1_false-valid-free.i [2018-04-12 11:20:39,730 INFO L221 ultiparseSymbolTable]: Function definition of null ('main') in 960521-1_false-valid-free.i [2018-04-12 11:20:39,730 INFO L227 ultiparseSymbolTable]: Global variable table: [2018-04-12 11:20:39,730 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__caddr_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,730 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____rlim_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,730 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__mode_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,730 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__u_int in 960521-1_false-valid-free.i [2018-04-12 11:20:39,731 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__div_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,731 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__pthread_mutex_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,731 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____int32_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,731 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__fsblkcnt_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,731 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____fsfilcnt_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,731 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__pthread_mutexattr_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,731 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____rlim64_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,731 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____suseconds_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,731 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____time_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,731 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____ssize_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,731 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____dev_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,731 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____blksize_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,731 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__int32_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,731 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____qaddr_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,731 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____caddr_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,731 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__fd_set in 960521-1_false-valid-free.i [2018-04-12 11:20:39,731 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____timer_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,731 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____id_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,732 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____blkcnt64_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,732 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__pid_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,732 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__fsfilcnt_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,732 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____u_short in 960521-1_false-valid-free.i [2018-04-12 11:20:39,732 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__key_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,732 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__u_int32_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,732 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____nlink_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,732 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__blkcnt_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,732 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____pthread_list_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,732 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__u_char in 960521-1_false-valid-free.i [2018-04-12 11:20:39,732 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__ulong in 960521-1_false-valid-free.i [2018-04-12 11:20:39,732 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____int16_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,732 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__pthread_once_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,732 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____u_long in 960521-1_false-valid-free.i [2018-04-12 11:20:39,733 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__gid_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,733 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____fsblkcnt64_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,733 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____off64_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,733 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__u_short in 960521-1_false-valid-free.i [2018-04-12 11:20:39,733 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____quad_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,733 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__int16_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,733 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__lldiv_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,733 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____u_char in 960521-1_false-valid-free.i [2018-04-12 11:20:39,733 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____mode_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,733 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__blksize_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,734 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____u_quad_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,734 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__wchar_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,734 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____intptr_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,734 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____uint32_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,734 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__pthread_barrier_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,734 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__size_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,734 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__off_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,734 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__pthread_attr_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,734 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__uid_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,734 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____socklen_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,734 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____clockid_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,735 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__quad_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,735 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____daddr_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,735 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__pthread_spinlock_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,735 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__fsid_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,735 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__u_int16_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,735 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__pthread_cond_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,735 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__int64_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,735 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____key_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,735 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____blkcnt_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,735 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____clock_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,735 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__fd_mask in 960521-1_false-valid-free.i [2018-04-12 11:20:39,735 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__dev_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,736 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____WAIT_STATUS in 960521-1_false-valid-free.i [2018-04-12 11:20:39,736 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__ushort in 960521-1_false-valid-free.i [2018-04-12 11:20:39,736 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__id_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,736 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____uint8_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,736 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__uint in 960521-1_false-valid-free.i [2018-04-12 11:20:39,736 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____sigset_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,736 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__loff_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,736 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____ino_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,736 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____ino64_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,736 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____pid_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,736 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____off_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,737 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____fd_mask in 960521-1_false-valid-free.i [2018-04-12 11:20:39,737 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__pthread_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,737 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____uint16_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,737 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____gid_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,737 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____fsid_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,737 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__nlink_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,737 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__clock_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,737 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__pthread_condattr_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,737 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__pthread_rwlockattr_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,737 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__u_long in 960521-1_false-valid-free.i [2018-04-12 11:20:39,737 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__suseconds_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,737 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__u_int8_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,737 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____loff_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,738 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__daddr_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,738 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____sig_atomic_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,738 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__clockid_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,738 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__timer_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,738 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____int8_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,738 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__pthread_barrierattr_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,738 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__register_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,738 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__sigset_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,738 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____uint64_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,738 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____swblk_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,738 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__u_quad_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,738 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__ldiv_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,738 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____uid_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,738 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__ssize_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,738 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__u_int64_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,739 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____fsblkcnt_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,739 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____int64_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,739 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__int8_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,739 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__n in 960521-1_false-valid-free.i [2018-04-12 11:20:39,739 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____fsfilcnt64_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,739 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__ino_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,739 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____u_int in 960521-1_false-valid-free.i [2018-04-12 11:20:39,739 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i____useconds_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,739 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__a in 960521-1_false-valid-free.i [2018-04-12 11:20:39,739 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__b in 960521-1_false-valid-free.i [2018-04-12 11:20:39,739 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__time_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,739 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__pthread_rwlock_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,739 INFO L230 ultiparseSymbolTable]: Global variable declaration of __U_MULTI_f_________false_valid_free_i__pthread_key_t in 960521-1_false-valid-free.i [2018-04-12 11:20:39,753 INFO L330 CDTParser]: Deleted temporary CDT project at /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/data/FLAGe0ec58c5f [2018-04-12 11:20:39,756 INFO L304 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-04-12 11:20:39,757 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2018-04-12 11:20:39,757 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-04-12 11:20:39,758 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-04-12 11:20:39,761 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-04-12 11:20:39,762 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.04 11:20:39" (1/1) ... [2018-04-12 11:20:39,763 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e82e0aa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 11:20:39, skipping insertion in model container [2018-04-12 11:20:39,763 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.04 11:20:39" (1/1) ... [2018-04-12 11:20:39,774 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-12 11:20:39,798 INFO L167 Dispatcher]: Using SV-COMP mode [2018-04-12 11:20:39,916 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-12 11:20:39,950 INFO L175 PostProcessor]: Settings: Checked method=main [2018-04-12 11:20:39,955 INFO L100 SccComputation]: Graph consists of 0 InCaSumBalls and 111 non ball SCCs. Number of states in SCCs 111. [2018-04-12 11:20:39,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 11:20:39 WrapperNode [2018-04-12 11:20:39,983 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-04-12 11:20:39,983 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-04-12 11:20:39,984 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-04-12 11:20:39,984 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-04-12 11:20:39,991 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 11:20:39" (1/1) ... [2018-04-12 11:20:39,991 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 11:20:39" (1/1) ... [2018-04-12 11:20:40,002 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 11:20:39" (1/1) ... [2018-04-12 11:20:40,002 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 11:20:39" (1/1) ... [2018-04-12 11:20:40,009 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 11:20:39" (1/1) ... [2018-04-12 11:20:40,014 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 11:20:39" (1/1) ... [2018-04-12 11:20:40,016 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 11:20:39" (1/1) ... [2018-04-12 11:20:40,019 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-04-12 11:20:40,019 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-04-12 11:20:40,020 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-04-12 11:20:40,020 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-04-12 11:20:40,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 11:20:39" (1/1) ... No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2018-04-12 11:20:40,125 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2018-04-12 11:20:40,125 INFO L136 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-04-12 11:20:40,125 INFO L136 BoogieDeclarations]: Found implementation of procedure __U_MULTI_f_________false_valid_free_i__foo [2018-04-12 11:20:40,125 INFO L136 BoogieDeclarations]: Found implementation of procedure main [2018-04-12 11:20:40,126 INFO L128 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2018-04-12 11:20:40,126 INFO L128 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2018-04-12 11:20:40,126 INFO L128 BoogieDeclarations]: Found specification of procedure atof [2018-04-12 11:20:40,126 INFO L128 BoogieDeclarations]: Found specification of procedure atoi [2018-04-12 11:20:40,126 INFO L128 BoogieDeclarations]: Found specification of procedure atol [2018-04-12 11:20:40,126 INFO L128 BoogieDeclarations]: Found specification of procedure atoll [2018-04-12 11:20:40,126 INFO L128 BoogieDeclarations]: Found specification of procedure strtod [2018-04-12 11:20:40,126 INFO L128 BoogieDeclarations]: Found specification of procedure strtof [2018-04-12 11:20:40,126 INFO L128 BoogieDeclarations]: Found specification of procedure strtold [2018-04-12 11:20:40,127 INFO L128 BoogieDeclarations]: Found specification of procedure strtol [2018-04-12 11:20:40,127 INFO L128 BoogieDeclarations]: Found specification of procedure strtoul [2018-04-12 11:20:40,127 INFO L128 BoogieDeclarations]: Found specification of procedure strtoq [2018-04-12 11:20:40,127 INFO L128 BoogieDeclarations]: Found specification of procedure strtouq [2018-04-12 11:20:40,127 INFO L128 BoogieDeclarations]: Found specification of procedure strtoll [2018-04-12 11:20:40,127 INFO L128 BoogieDeclarations]: Found specification of procedure strtoull [2018-04-12 11:20:40,127 INFO L128 BoogieDeclarations]: Found specification of procedure l64a [2018-04-12 11:20:40,127 INFO L128 BoogieDeclarations]: Found specification of procedure a64l [2018-04-12 11:20:40,128 INFO L128 BoogieDeclarations]: Found specification of procedure select [2018-04-12 11:20:40,128 INFO L128 BoogieDeclarations]: Found specification of procedure pselect [2018-04-12 11:20:40,128 INFO L128 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2018-04-12 11:20:40,128 INFO L128 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2018-04-12 11:20:40,128 INFO L128 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2018-04-12 11:20:40,128 INFO L128 BoogieDeclarations]: Found specification of procedure random [2018-04-12 11:20:40,128 INFO L128 BoogieDeclarations]: Found specification of procedure srandom [2018-04-12 11:20:40,128 INFO L128 BoogieDeclarations]: Found specification of procedure initstate [2018-04-12 11:20:40,129 INFO L128 BoogieDeclarations]: Found specification of procedure setstate [2018-04-12 11:20:40,129 INFO L128 BoogieDeclarations]: Found specification of procedure random_r [2018-04-12 11:20:40,129 INFO L128 BoogieDeclarations]: Found specification of procedure srandom_r [2018-04-12 11:20:40,129 INFO L128 BoogieDeclarations]: Found specification of procedure initstate_r [2018-04-12 11:20:40,129 INFO L128 BoogieDeclarations]: Found specification of procedure setstate_r [2018-04-12 11:20:40,129 INFO L128 BoogieDeclarations]: Found specification of procedure rand [2018-04-12 11:20:40,129 INFO L128 BoogieDeclarations]: Found specification of procedure srand [2018-04-12 11:20:40,129 INFO L128 BoogieDeclarations]: Found specification of procedure rand_r [2018-04-12 11:20:40,129 INFO L128 BoogieDeclarations]: Found specification of procedure drand48 [2018-04-12 11:20:40,130 INFO L128 BoogieDeclarations]: Found specification of procedure erand48 [2018-04-12 11:20:40,130 INFO L128 BoogieDeclarations]: Found specification of procedure lrand48 [2018-04-12 11:20:40,130 INFO L128 BoogieDeclarations]: Found specification of procedure nrand48 [2018-04-12 11:20:40,130 INFO L128 BoogieDeclarations]: Found specification of procedure mrand48 [2018-04-12 11:20:40,130 INFO L128 BoogieDeclarations]: Found specification of procedure jrand48 [2018-04-12 11:20:40,130 INFO L128 BoogieDeclarations]: Found specification of procedure srand48 [2018-04-12 11:20:40,130 INFO L128 BoogieDeclarations]: Found specification of procedure seed48 [2018-04-12 11:20:40,130 INFO L128 BoogieDeclarations]: Found specification of procedure lcong48 [2018-04-12 11:20:40,130 INFO L128 BoogieDeclarations]: Found specification of procedure drand48_r [2018-04-12 11:20:40,130 INFO L128 BoogieDeclarations]: Found specification of procedure erand48_r [2018-04-12 11:20:40,131 INFO L128 BoogieDeclarations]: Found specification of procedure lrand48_r [2018-04-12 11:20:40,131 INFO L128 BoogieDeclarations]: Found specification of procedure nrand48_r [2018-04-12 11:20:40,131 INFO L128 BoogieDeclarations]: Found specification of procedure mrand48_r [2018-04-12 11:20:40,131 INFO L128 BoogieDeclarations]: Found specification of procedure jrand48_r [2018-04-12 11:20:40,131 INFO L128 BoogieDeclarations]: Found specification of procedure srand48_r [2018-04-12 11:20:40,131 INFO L128 BoogieDeclarations]: Found specification of procedure seed48_r [2018-04-12 11:20:40,131 INFO L128 BoogieDeclarations]: Found specification of procedure lcong48_r [2018-04-12 11:20:40,131 INFO L128 BoogieDeclarations]: Found specification of procedure malloc [2018-04-12 11:20:40,131 INFO L128 BoogieDeclarations]: Found specification of procedure calloc [2018-04-12 11:20:40,132 INFO L128 BoogieDeclarations]: Found specification of procedure realloc [2018-04-12 11:20:40,132 INFO L128 BoogieDeclarations]: Found specification of procedure free [2018-04-12 11:20:40,132 INFO L128 BoogieDeclarations]: Found specification of procedure cfree [2018-04-12 11:20:40,132 INFO L128 BoogieDeclarations]: Found specification of procedure alloca [2018-04-12 11:20:40,132 INFO L128 BoogieDeclarations]: Found specification of procedure valloc [2018-04-12 11:20:40,132 INFO L128 BoogieDeclarations]: Found specification of procedure posix_memalign [2018-04-12 11:20:40,132 INFO L128 BoogieDeclarations]: Found specification of procedure abort [2018-04-12 11:20:40,132 INFO L128 BoogieDeclarations]: Found specification of procedure atexit [2018-04-12 11:20:40,132 INFO L128 BoogieDeclarations]: Found specification of procedure on_exit [2018-04-12 11:20:40,132 INFO L128 BoogieDeclarations]: Found specification of procedure exit [2018-04-12 11:20:40,133 INFO L128 BoogieDeclarations]: Found specification of procedure _Exit [2018-04-12 11:20:40,133 INFO L128 BoogieDeclarations]: Found specification of procedure getenv [2018-04-12 11:20:40,133 INFO L128 BoogieDeclarations]: Found specification of procedure __secure_getenv [2018-04-12 11:20:40,133 INFO L128 BoogieDeclarations]: Found specification of procedure putenv [2018-04-12 11:20:40,133 INFO L128 BoogieDeclarations]: Found specification of procedure setenv [2018-04-12 11:20:40,133 INFO L128 BoogieDeclarations]: Found specification of procedure unsetenv [2018-04-12 11:20:40,133 INFO L128 BoogieDeclarations]: Found specification of procedure clearenv [2018-04-12 11:20:40,133 INFO L128 BoogieDeclarations]: Found specification of procedure mktemp [2018-04-12 11:20:40,133 INFO L128 BoogieDeclarations]: Found specification of procedure mkstemp [2018-04-12 11:20:40,133 INFO L128 BoogieDeclarations]: Found specification of procedure mkstemps [2018-04-12 11:20:40,134 INFO L128 BoogieDeclarations]: Found specification of procedure mkdtemp [2018-04-12 11:20:40,134 INFO L128 BoogieDeclarations]: Found specification of procedure system [2018-04-12 11:20:40,134 INFO L128 BoogieDeclarations]: Found specification of procedure realpath [2018-04-12 11:20:40,134 INFO L128 BoogieDeclarations]: Found specification of procedure bsearch [2018-04-12 11:20:40,134 INFO L128 BoogieDeclarations]: Found specification of procedure qsort [2018-04-12 11:20:40,134 INFO L128 BoogieDeclarations]: Found specification of procedure abs [2018-04-12 11:20:40,134 INFO L128 BoogieDeclarations]: Found specification of procedure labs [2018-04-12 11:20:40,134 INFO L128 BoogieDeclarations]: Found specification of procedure llabs [2018-04-12 11:20:40,134 INFO L128 BoogieDeclarations]: Found specification of procedure div [2018-04-12 11:20:40,135 INFO L128 BoogieDeclarations]: Found specification of procedure ldiv [2018-04-12 11:20:40,135 INFO L128 BoogieDeclarations]: Found specification of procedure lldiv [2018-04-12 11:20:40,135 INFO L128 BoogieDeclarations]: Found specification of procedure ecvt [2018-04-12 11:20:40,135 INFO L128 BoogieDeclarations]: Found specification of procedure fcvt [2018-04-12 11:20:40,135 INFO L128 BoogieDeclarations]: Found specification of procedure gcvt [2018-04-12 11:20:40,135 INFO L128 BoogieDeclarations]: Found specification of procedure qecvt [2018-04-12 11:20:40,135 INFO L128 BoogieDeclarations]: Found specification of procedure qfcvt [2018-04-12 11:20:40,135 INFO L128 BoogieDeclarations]: Found specification of procedure qgcvt [2018-04-12 11:20:40,135 INFO L128 BoogieDeclarations]: Found specification of procedure ecvt_r [2018-04-12 11:20:40,135 INFO L128 BoogieDeclarations]: Found specification of procedure fcvt_r [2018-04-12 11:20:40,136 INFO L128 BoogieDeclarations]: Found specification of procedure qecvt_r [2018-04-12 11:20:40,136 INFO L128 BoogieDeclarations]: Found specification of procedure qfcvt_r [2018-04-12 11:20:40,136 INFO L128 BoogieDeclarations]: Found specification of procedure mblen [2018-04-12 11:20:40,136 INFO L128 BoogieDeclarations]: Found specification of procedure mbtowc [2018-04-12 11:20:40,136 INFO L128 BoogieDeclarations]: Found specification of procedure wctomb [2018-04-12 11:20:40,136 INFO L128 BoogieDeclarations]: Found specification of procedure mbstowcs [2018-04-12 11:20:40,136 INFO L128 BoogieDeclarations]: Found specification of procedure wcstombs [2018-04-12 11:20:40,136 INFO L128 BoogieDeclarations]: Found specification of procedure rpmatch [2018-04-12 11:20:40,136 INFO L128 BoogieDeclarations]: Found specification of procedure getsubopt [2018-04-12 11:20:40,136 INFO L128 BoogieDeclarations]: Found specification of procedure getloadavg [2018-04-12 11:20:40,136 INFO L128 BoogieDeclarations]: Found specification of procedure __U_MULTI_f_________false_valid_free_i__foo [2018-04-12 11:20:40,137 INFO L128 BoogieDeclarations]: Found specification of procedure write~int [2018-04-12 11:20:40,137 INFO L128 BoogieDeclarations]: Found specification of procedure main [2018-04-12 11:20:40,137 INFO L128 BoogieDeclarations]: Found specification of procedure #Ultimate.alloc [2018-04-12 11:20:40,137 INFO L128 BoogieDeclarations]: Found specification of procedure read~int [2018-04-12 11:20:40,137 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2018-04-12 11:20:40,137 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2018-04-12 11:20:40,137 INFO L128 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-04-12 11:20:40,137 INFO L128 BoogieDeclarations]: Found specification of procedure write~unchecked~int [2018-04-12 11:20:40,424 INFO L259 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-04-12 11:20:40,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.04 11:20:40 BoogieIcfgContainer [2018-04-12 11:20:40,425 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-04-12 11:20:40,425 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2018-04-12 11:20:40,425 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2018-04-12 11:20:40,427 INFO L276 PluginConnector]: TraceAbstraction initialized [2018-04-12 11:20:40,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.04 11:20:39" (1/3) ... [2018-04-12 11:20:40,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dee2f80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.04 11:20:40, skipping insertion in model container [2018-04-12 11:20:40,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.04 11:20:39" (2/3) ... [2018-04-12 11:20:40,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4dee2f80 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.04 11:20:40, skipping insertion in model container [2018-04-12 11:20:40,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.04 11:20:40" (3/3) ... [2018-04-12 11:20:40,429 INFO L107 eAbstractionObserver]: Analyzing ICFG 960521-1_false-valid-free.i [2018-04-12 11:20:40,435 INFO L131 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2018-04-12 11:20:40,439 INFO L143 ceAbstractionStarter]: Appying trace abstraction to program that has 17 error locations. [2018-04-12 11:20:40,460 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2018-04-12 11:20:40,461 INFO L369 AbstractCegarLoop]: Interprodecural is true [2018-04-12 11:20:40,461 INFO L370 AbstractCegarLoop]: Hoare is false [2018-04-12 11:20:40,461 INFO L371 AbstractCegarLoop]: Compute interpolants for FPandBP [2018-04-12 11:20:40,461 INFO L372 AbstractCegarLoop]: Backedges is TWOTRACK [2018-04-12 11:20:40,461 INFO L373 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-04-12 11:20:40,461 INFO L374 AbstractCegarLoop]: Difference is false [2018-04-12 11:20:40,461 INFO L375 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-04-12 11:20:40,461 INFO L380 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2018-04-12 11:20:40,462 INFO L87 2NestedWordAutomaton]: Mode: main mode - execution starts in main procedure [2018-04-12 11:20:40,469 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2018-04-12 11:20:40,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-04-12 11:20:40,476 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 11:20:40,476 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 11:20:40,476 INFO L408 AbstractCegarLoop]: === Iteration 1 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-12 11:20:40,479 INFO L82 PathProgramCache]: Analyzing trace with hash 516560539, now seen corresponding path program 1 times [2018-04-12 11:20:40,480 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 11:20:40,480 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 11:20:40,506 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:20:40,506 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 11:20:40,506 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:20:40,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:20:40,545 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 11:20:40,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 11:20:40,583 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-12 11:20:40,584 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-04-12 11:20:40,584 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-04-12 11:20:40,596 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-04-12 11:20:40,597 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-04-12 11:20:40,598 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 4 states. [2018-04-12 11:20:40,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 11:20:40,676 INFO L93 Difference]: Finished difference Result 60 states and 62 transitions. [2018-04-12 11:20:40,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-04-12 11:20:40,677 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2018-04-12 11:20:40,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 11:20:40,682 INFO L225 Difference]: With dead ends: 60 [2018-04-12 11:20:40,682 INFO L226 Difference]: Without dead ends: 57 [2018-04-12 11:20:40,684 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-04-12 11:20:40,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2018-04-12 11:20:40,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2018-04-12 11:20:40,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2018-04-12 11:20:40,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 59 transitions. [2018-04-12 11:20:40,713 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 59 transitions. Word has length 11 [2018-04-12 11:20:40,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 11:20:40,714 INFO L459 AbstractCegarLoop]: Abstraction has 57 states and 59 transitions. [2018-04-12 11:20:40,714 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-04-12 11:20:40,714 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 59 transitions. [2018-04-12 11:20:40,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2018-04-12 11:20:40,714 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 11:20:40,714 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 11:20:40,714 INFO L408 AbstractCegarLoop]: === Iteration 2 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-12 11:20:40,715 INFO L82 PathProgramCache]: Analyzing trace with hash 516560540, now seen corresponding path program 1 times [2018-04-12 11:20:40,715 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 11:20:40,715 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 11:20:40,716 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:20:40,716 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 11:20:40,716 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:20:40,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:20:40,730 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 11:20:40,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 11:20:40,775 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-12 11:20:40,775 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-04-12 11:20:40,776 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2018-04-12 11:20:40,777 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-04-12 11:20:40,777 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2018-04-12 11:20:40,777 INFO L87 Difference]: Start difference. First operand 57 states and 59 transitions. Second operand 5 states. [2018-04-12 11:20:40,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 11:20:40,832 INFO L93 Difference]: Finished difference Result 56 states and 58 transitions. [2018-04-12 11:20:40,832 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-04-12 11:20:40,832 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2018-04-12 11:20:40,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 11:20:40,833 INFO L225 Difference]: With dead ends: 56 [2018-04-12 11:20:40,833 INFO L226 Difference]: Without dead ends: 56 [2018-04-12 11:20:40,833 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-04-12 11:20:40,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2018-04-12 11:20:40,835 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2018-04-12 11:20:40,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-04-12 11:20:40,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2018-04-12 11:20:40,836 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 11 [2018-04-12 11:20:40,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 11:20:40,837 INFO L459 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2018-04-12 11:20:40,837 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states. [2018-04-12 11:20:40,837 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2018-04-12 11:20:40,837 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-04-12 11:20:40,837 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 11:20:40,837 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 11:20:40,837 INFO L408 AbstractCegarLoop]: === Iteration 3 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-12 11:20:40,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1337247429, now seen corresponding path program 1 times [2018-04-12 11:20:40,837 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 11:20:40,837 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 11:20:40,838 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:20:40,838 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 11:20:40,838 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:20:40,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:20:40,850 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 11:20:40,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 11:20:40,890 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-12 11:20:40,890 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2018-04-12 11:20:40,891 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2018-04-12 11:20:40,891 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-04-12 11:20:40,891 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2018-04-12 11:20:40,891 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 6 states. [2018-04-12 11:20:40,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 11:20:40,963 INFO L93 Difference]: Finished difference Result 53 states and 55 transitions. [2018-04-12 11:20:40,964 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-04-12 11:20:40,964 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 17 [2018-04-12 11:20:40,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 11:20:40,965 INFO L225 Difference]: With dead ends: 53 [2018-04-12 11:20:40,965 INFO L226 Difference]: Without dead ends: 53 [2018-04-12 11:20:40,965 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2018-04-12 11:20:40,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2018-04-12 11:20:40,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2018-04-12 11:20:40,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2018-04-12 11:20:40,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 55 transitions. [2018-04-12 11:20:40,967 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 55 transitions. Word has length 17 [2018-04-12 11:20:40,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 11:20:40,968 INFO L459 AbstractCegarLoop]: Abstraction has 53 states and 55 transitions. [2018-04-12 11:20:40,968 INFO L460 AbstractCegarLoop]: Interpolant automaton has 6 states. [2018-04-12 11:20:40,968 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 55 transitions. [2018-04-12 11:20:40,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2018-04-12 11:20:40,968 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 11:20:40,968 INFO L355 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 11:20:40,968 INFO L408 AbstractCegarLoop]: === Iteration 4 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-12 11:20:40,968 INFO L82 PathProgramCache]: Analyzing trace with hash 1337247430, now seen corresponding path program 1 times [2018-04-12 11:20:40,968 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 11:20:40,969 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 11:20:40,969 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:20:40,969 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 11:20:40,969 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:20:40,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:20:40,982 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 11:20:41,037 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 11:20:41,038 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-12 11:20:41,038 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2018-04-12 11:20:41,038 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2018-04-12 11:20:41,038 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2018-04-12 11:20:41,038 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2018-04-12 11:20:41,038 INFO L87 Difference]: Start difference. First operand 53 states and 55 transitions. Second operand 7 states. [2018-04-12 11:20:41,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 11:20:41,120 INFO L93 Difference]: Finished difference Result 61 states and 63 transitions. [2018-04-12 11:20:41,120 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2018-04-12 11:20:41,120 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2018-04-12 11:20:41,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 11:20:41,121 INFO L225 Difference]: With dead ends: 61 [2018-04-12 11:20:41,121 INFO L226 Difference]: Without dead ends: 61 [2018-04-12 11:20:41,121 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2018-04-12 11:20:41,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2018-04-12 11:20:41,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 56. [2018-04-12 11:20:41,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2018-04-12 11:20:41,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 58 transitions. [2018-04-12 11:20:41,124 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 58 transitions. Word has length 17 [2018-04-12 11:20:41,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 11:20:41,124 INFO L459 AbstractCegarLoop]: Abstraction has 56 states and 58 transitions. [2018-04-12 11:20:41,124 INFO L460 AbstractCegarLoop]: Interpolant automaton has 7 states. [2018-04-12 11:20:41,124 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 58 transitions. [2018-04-12 11:20:41,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2018-04-12 11:20:41,125 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 11:20:41,125 INFO L355 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 11:20:41,125 INFO L408 AbstractCegarLoop]: === Iteration 5 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-12 11:20:41,125 INFO L82 PathProgramCache]: Analyzing trace with hash 1186083357, now seen corresponding path program 1 times [2018-04-12 11:20:41,125 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 11:20:41,125 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 11:20:41,126 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:20:41,126 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 11:20:41,126 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:20:41,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:20:41,136 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 11:20:41,221 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 11:20:41,222 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 11:20:41,222 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 11:20:41,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 11:20:41,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:20:41,261 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 11:20:41,291 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-04-12 11:20:41,292 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-12 11:20:41,296 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-12 11:20:41,296 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:15, output treesize:14 [2018-04-12 11:20:41,305 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 15 [2018-04-12 11:20:41,305 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-12 11:20:41,313 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. [2018-04-12 11:20:41,313 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:22, output treesize:21 [2018-04-12 11:20:41,394 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 11:20:41,423 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 11:20:41,423 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8] total 11 [2018-04-12 11:20:41,423 INFO L442 AbstractCegarLoop]: Interpolant automaton has 12 states [2018-04-12 11:20:41,423 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2018-04-12 11:20:41,424 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2018-04-12 11:20:41,424 INFO L87 Difference]: Start difference. First operand 56 states and 58 transitions. Second operand 12 states. [2018-04-12 11:20:41,646 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 11:20:41,646 INFO L93 Difference]: Finished difference Result 71 states and 73 transitions. [2018-04-12 11:20:41,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-04-12 11:20:41,646 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 21 [2018-04-12 11:20:41,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 11:20:41,647 INFO L225 Difference]: With dead ends: 71 [2018-04-12 11:20:41,647 INFO L226 Difference]: Without dead ends: 71 [2018-04-12 11:20:41,647 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 16 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2018-04-12 11:20:41,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2018-04-12 11:20:41,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 64. [2018-04-12 11:20:41,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2018-04-12 11:20:41,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 68 transitions. [2018-04-12 11:20:41,650 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 68 transitions. Word has length 21 [2018-04-12 11:20:41,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 11:20:41,650 INFO L459 AbstractCegarLoop]: Abstraction has 64 states and 68 transitions. [2018-04-12 11:20:41,650 INFO L460 AbstractCegarLoop]: Interpolant automaton has 12 states. [2018-04-12 11:20:41,650 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 68 transitions. [2018-04-12 11:20:41,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2018-04-12 11:20:41,650 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 11:20:41,650 INFO L355 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 11:20:41,650 INFO L408 AbstractCegarLoop]: === Iteration 6 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-12 11:20:41,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1607211508, now seen corresponding path program 2 times [2018-04-12 11:20:41,651 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 11:20:41,651 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 11:20:41,651 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:20:41,651 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 11:20:41,651 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:20:41,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:20:41,662 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 11:20:41,795 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 11:20:41,796 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 11:20:41,796 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 11:20:41,801 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-12 11:20:41,821 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-12 11:20:41,821 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 11:20:41,823 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 11:20:41,826 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 [2018-04-12 11:20:41,826 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-12 11:20:41,831 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-04-12 11:20:41,832 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-12 11:20:41,835 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-12 11:20:41,835 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:21, output treesize:19 [2018-04-12 11:20:41,855 INFO L700 Elim1Store]: detected not equals via solver [2018-04-12 11:20:41,856 INFO L700 Elim1Store]: detected not equals via solver [2018-04-12 11:20:41,856 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-04-12 11:20:41,856 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-12 11:20:41,862 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 19 [2018-04-12 11:20:41,863 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-12 11:20:41,868 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2018-04-12 11:20:41,868 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:32, output treesize:25 [2018-04-12 11:20:41,995 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 11:20:42,022 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 11:20:42,022 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2018-04-12 11:20:42,023 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-04-12 11:20:42,023 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-04-12 11:20:42,023 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2018-04-12 11:20:42,023 INFO L87 Difference]: Start difference. First operand 64 states and 68 transitions. Second operand 17 states. [2018-04-12 11:20:42,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 11:20:42,424 INFO L93 Difference]: Finished difference Result 81 states and 83 transitions. [2018-04-12 11:20:42,424 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2018-04-12 11:20:42,424 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 25 [2018-04-12 11:20:42,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 11:20:42,425 INFO L225 Difference]: With dead ends: 81 [2018-04-12 11:20:42,425 INFO L226 Difference]: Without dead ends: 81 [2018-04-12 11:20:42,425 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=114, Invalid=438, Unknown=0, NotChecked=0, Total=552 [2018-04-12 11:20:42,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2018-04-12 11:20:42,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 72. [2018-04-12 11:20:42,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2018-04-12 11:20:42,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 78 transitions. [2018-04-12 11:20:42,428 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 78 transitions. Word has length 25 [2018-04-12 11:20:42,428 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 11:20:42,428 INFO L459 AbstractCegarLoop]: Abstraction has 72 states and 78 transitions. [2018-04-12 11:20:42,428 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-04-12 11:20:42,428 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 78 transitions. [2018-04-12 11:20:42,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2018-04-12 11:20:42,429 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 11:20:42,429 INFO L355 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 11:20:42,429 INFO L408 AbstractCegarLoop]: === Iteration 7 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-12 11:20:42,429 INFO L82 PathProgramCache]: Analyzing trace with hash 124796491, now seen corresponding path program 3 times [2018-04-12 11:20:42,429 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 11:20:42,429 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 11:20:42,430 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:20:42,430 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 11:20:42,430 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:20:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:20:42,441 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 11:20:42,596 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 11:20:42,596 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 11:20:42,596 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 11:20:42,604 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-04-12 11:20:42,623 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2018-04-12 11:20:42,623 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 11:20:42,625 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 11:20:42,629 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 [2018-04-12 11:20:42,629 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-12 11:20:42,635 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-04-12 11:20:42,635 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-12 11:20:42,640 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-12 11:20:42,640 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:18, output treesize:16 [2018-04-12 11:20:42,671 INFO L700 Elim1Store]: detected not equals via solver [2018-04-12 11:20:42,673 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 19 [2018-04-12 11:20:42,673 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-12 11:20:42,681 INFO L700 Elim1Store]: detected not equals via solver [2018-04-12 11:20:42,681 INFO L700 Elim1Store]: detected not equals via solver [2018-04-12 11:20:42,682 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 4 [2018-04-12 11:20:42,682 INFO L267 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2018-04-12 11:20:42,686 INFO L267 ElimStorePlain]: Start of recursive call 1: 2 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-12 11:20:42,686 INFO L202 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:29, output treesize:22 [2018-04-12 11:20:42,825 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2018-04-12 11:20:42,851 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 11:20:42,851 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 17 [2018-04-12 11:20:42,852 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-04-12 11:20:42,852 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-04-12 11:20:42,852 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2018-04-12 11:20:42,852 INFO L87 Difference]: Start difference. First operand 72 states and 78 transitions. Second operand 18 states. [2018-04-12 11:20:43,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 11:20:43,437 INFO L93 Difference]: Finished difference Result 98 states and 102 transitions. [2018-04-12 11:20:43,437 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-04-12 11:20:43,437 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 29 [2018-04-12 11:20:43,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 11:20:43,439 INFO L225 Difference]: With dead ends: 98 [2018-04-12 11:20:43,439 INFO L226 Difference]: Without dead ends: 98 [2018-04-12 11:20:43,440 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=168, Invalid=644, Unknown=0, NotChecked=0, Total=812 [2018-04-12 11:20:43,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2018-04-12 11:20:43,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 78. [2018-04-12 11:20:43,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2018-04-12 11:20:43,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2018-04-12 11:20:43,453 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 29 [2018-04-12 11:20:43,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 11:20:43,454 INFO L459 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2018-04-12 11:20:43,454 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-04-12 11:20:43,454 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2018-04-12 11:20:43,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-04-12 11:20:43,455 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 11:20:43,455 INFO L355 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 11:20:43,455 INFO L408 AbstractCegarLoop]: === Iteration 8 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-12 11:20:43,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1358308887, now seen corresponding path program 1 times [2018-04-12 11:20:43,455 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 11:20:43,455 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 11:20:43,456 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:20:43,456 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 11:20:43,456 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:20:43,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:20:43,465 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 11:20:43,487 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 50 trivial. 0 not checked. [2018-04-12 11:20:43,488 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-04-12 11:20:43,488 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-04-12 11:20:43,488 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2018-04-12 11:20:43,488 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-04-12 11:20:43,488 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-04-12 11:20:43,488 INFO L87 Difference]: Start difference. First operand 78 states and 84 transitions. Second operand 4 states. [2018-04-12 11:20:43,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 11:20:43,512 INFO L93 Difference]: Finished difference Result 76 states and 80 transitions. [2018-04-12 11:20:43,512 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-04-12 11:20:43,513 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 40 [2018-04-12 11:20:43,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 11:20:43,513 INFO L225 Difference]: With dead ends: 76 [2018-04-12 11:20:43,513 INFO L226 Difference]: Without dead ends: 76 [2018-04-12 11:20:43,513 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2018-04-12 11:20:43,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2018-04-12 11:20:43,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2018-04-12 11:20:43,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2018-04-12 11:20:43,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2018-04-12 11:20:43,517 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 40 [2018-04-12 11:20:43,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 11:20:43,517 INFO L459 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2018-04-12 11:20:43,518 INFO L460 AbstractCegarLoop]: Interpolant automaton has 4 states. [2018-04-12 11:20:43,518 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2018-04-12 11:20:43,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2018-04-12 11:20:43,518 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 11:20:43,518 INFO L355 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 11:20:43,518 INFO L408 AbstractCegarLoop]: === Iteration 9 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-12 11:20:43,519 INFO L82 PathProgramCache]: Analyzing trace with hash 1358308888, now seen corresponding path program 1 times [2018-04-12 11:20:43,519 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 11:20:43,519 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 11:20:43,519 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:20:43,520 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 11:20:43,520 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:20:43,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:20:43,530 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 11:20:43,591 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 11:20:43,591 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 11:20:43,591 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 11:20:43,600 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 11:20:43,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:20:43,622 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 11:20:43,694 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 50 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 11:20:43,721 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 11:20:43,721 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 15 [2018-04-12 11:20:43,721 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-04-12 11:20:43,721 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-04-12 11:20:43,721 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=120, Unknown=0, NotChecked=0, Total=210 [2018-04-12 11:20:43,721 INFO L87 Difference]: Start difference. First operand 76 states and 80 transitions. Second operand 15 states. [2018-04-12 11:20:43,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 11:20:43,791 INFO L93 Difference]: Finished difference Result 102 states and 104 transitions. [2018-04-12 11:20:43,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2018-04-12 11:20:43,791 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 40 [2018-04-12 11:20:43,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 11:20:43,792 INFO L225 Difference]: With dead ends: 102 [2018-04-12 11:20:43,792 INFO L226 Difference]: Without dead ends: 102 [2018-04-12 11:20:43,792 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=90, Invalid=120, Unknown=0, NotChecked=0, Total=210 [2018-04-12 11:20:43,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2018-04-12 11:20:43,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 92. [2018-04-12 11:20:43,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2018-04-12 11:20:43,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 99 transitions. [2018-04-12 11:20:43,795 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 99 transitions. Word has length 40 [2018-04-12 11:20:43,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 11:20:43,795 INFO L459 AbstractCegarLoop]: Abstraction has 92 states and 99 transitions. [2018-04-12 11:20:43,795 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-04-12 11:20:43,795 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 99 transitions. [2018-04-12 11:20:43,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2018-04-12 11:20:43,795 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 11:20:43,795 INFO L355 BasicCegarLoop]: trace histogram [7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 11:20:43,795 INFO L408 AbstractCegarLoop]: === Iteration 10 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-12 11:20:43,795 INFO L82 PathProgramCache]: Analyzing trace with hash 412608737, now seen corresponding path program 2 times [2018-04-12 11:20:43,796 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 11:20:43,796 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 11:20:43,796 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:20:43,796 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 11:20:43,796 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:20:43,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:20:43,805 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 11:20:43,863 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 11:20:43,863 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 11:20:43,864 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 11:20:43,872 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-12 11:20:43,889 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2018-04-12 11:20:43,889 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 11:20:43,892 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 11:20:43,897 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-04-12 11:20:43,897 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-12 11:20:43,902 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. [2018-04-12 11:20:43,902 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:14 [2018-04-12 11:20:44,011 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-04-12 11:20:44,036 INFO L320 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2018-04-12 11:20:44,036 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 15 [2018-04-12 11:20:44,037 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-04-12 11:20:44,037 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-04-12 11:20:44,037 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2018-04-12 11:20:44,037 INFO L87 Difference]: Start difference. First operand 92 states and 99 transitions. Second operand 15 states. [2018-04-12 11:20:44,449 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 11:20:44,449 INFO L93 Difference]: Finished difference Result 95 states and 97 transitions. [2018-04-12 11:20:44,449 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-04-12 11:20:44,449 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 44 [2018-04-12 11:20:44,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 11:20:44,450 INFO L225 Difference]: With dead ends: 95 [2018-04-12 11:20:44,450 INFO L226 Difference]: Without dead ends: 95 [2018-04-12 11:20:44,451 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=294, Invalid=828, Unknown=0, NotChecked=0, Total=1122 [2018-04-12 11:20:44,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2018-04-12 11:20:44,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 85. [2018-04-12 11:20:44,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2018-04-12 11:20:44,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 86 transitions. [2018-04-12 11:20:44,455 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 86 transitions. Word has length 44 [2018-04-12 11:20:44,455 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 11:20:44,455 INFO L459 AbstractCegarLoop]: Abstraction has 85 states and 86 transitions. [2018-04-12 11:20:44,455 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-04-12 11:20:44,455 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 86 transitions. [2018-04-12 11:20:44,456 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2018-04-12 11:20:44,456 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 11:20:44,456 INFO L355 BasicCegarLoop]: trace histogram [8, 7, 7, 7, 7, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 11:20:44,457 INFO L408 AbstractCegarLoop]: === Iteration 11 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-12 11:20:44,457 INFO L82 PathProgramCache]: Analyzing trace with hash 568412717, now seen corresponding path program 1 times [2018-04-12 11:20:44,457 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 11:20:44,457 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 11:20:44,458 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:20:44,458 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 11:20:44,458 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:20:44,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:20:44,469 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 11:20:44,529 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-04-12 11:20:44,530 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 11:20:44,530 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 11:20:44,534 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 11:20:44,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:20:44,589 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 11:20:44,652 INFO L134 CoverageAnalysis]: Checked inductivity of 170 backedges. 0 proven. 98 refuted. 0 times theorem prover too weak. 72 trivial. 0 not checked. [2018-04-12 11:20:44,669 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 11:20:44,669 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11] total 20 [2018-04-12 11:20:44,670 INFO L442 AbstractCegarLoop]: Interpolant automaton has 20 states [2018-04-12 11:20:44,670 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2018-04-12 11:20:44,670 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=244, Unknown=0, NotChecked=0, Total=380 [2018-04-12 11:20:44,671 INFO L87 Difference]: Start difference. First operand 85 states and 86 transitions. Second operand 20 states. [2018-04-12 11:20:44,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 11:20:44,754 INFO L93 Difference]: Finished difference Result 101 states and 102 transitions. [2018-04-12 11:20:44,754 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2018-04-12 11:20:44,754 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 79 [2018-04-12 11:20:44,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 11:20:44,755 INFO L225 Difference]: With dead ends: 101 [2018-04-12 11:20:44,755 INFO L226 Difference]: Without dead ends: 101 [2018-04-12 11:20:44,755 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 71 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=155, Invalid=265, Unknown=0, NotChecked=0, Total=420 [2018-04-12 11:20:44,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2018-04-12 11:20:44,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 97. [2018-04-12 11:20:44,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2018-04-12 11:20:44,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 98 transitions. [2018-04-12 11:20:44,758 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 98 transitions. Word has length 79 [2018-04-12 11:20:44,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 11:20:44,759 INFO L459 AbstractCegarLoop]: Abstraction has 97 states and 98 transitions. [2018-04-12 11:20:44,759 INFO L460 AbstractCegarLoop]: Interpolant automaton has 20 states. [2018-04-12 11:20:44,759 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 98 transitions. [2018-04-12 11:20:44,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2018-04-12 11:20:44,760 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 11:20:44,760 INFO L355 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 11:20:44,760 INFO L408 AbstractCegarLoop]: === Iteration 12 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-12 11:20:44,760 INFO L82 PathProgramCache]: Analyzing trace with hash -1423474090, now seen corresponding path program 2 times [2018-04-12 11:20:44,760 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 11:20:44,760 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 11:20:44,761 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:20:44,761 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 11:20:44,761 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:20:44,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:20:44,774 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 11:20:44,855 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-04-12 11:20:44,855 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 11:20:44,855 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 11:20:44,864 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-12 11:20:44,898 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-12 11:20:44,898 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 11:20:44,901 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 11:20:44,977 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 128 refuted. 0 times theorem prover too weak. 128 trivial. 0 not checked. [2018-04-12 11:20:44,996 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 11:20:45,006 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 12] total 22 [2018-04-12 11:20:45,007 INFO L442 AbstractCegarLoop]: Interpolant automaton has 22 states [2018-04-12 11:20:45,007 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2018-04-12 11:20:45,007 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=166, Invalid=296, Unknown=0, NotChecked=0, Total=462 [2018-04-12 11:20:45,007 INFO L87 Difference]: Start difference. First operand 97 states and 98 transitions. Second operand 22 states. [2018-04-12 11:20:45,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 11:20:45,130 INFO L93 Difference]: Finished difference Result 109 states and 110 transitions. [2018-04-12 11:20:45,131 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2018-04-12 11:20:45,131 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 91 [2018-04-12 11:20:45,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 11:20:45,132 INFO L225 Difference]: With dead ends: 109 [2018-04-12 11:20:45,132 INFO L226 Difference]: Without dead ends: 109 [2018-04-12 11:20:45,132 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 150 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=187, Invalid=319, Unknown=0, NotChecked=0, Total=506 [2018-04-12 11:20:45,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2018-04-12 11:20:45,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 105. [2018-04-12 11:20:45,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 105 states. [2018-04-12 11:20:45,135 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 106 transitions. [2018-04-12 11:20:45,136 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 106 transitions. Word has length 91 [2018-04-12 11:20:45,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 11:20:45,136 INFO L459 AbstractCegarLoop]: Abstraction has 105 states and 106 transitions. [2018-04-12 11:20:45,136 INFO L460 AbstractCegarLoop]: Interpolant automaton has 22 states. [2018-04-12 11:20:45,136 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 106 transitions. [2018-04-12 11:20:45,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2018-04-12 11:20:45,137 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 11:20:45,137 INFO L355 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 11:20:45,137 INFO L408 AbstractCegarLoop]: === Iteration 13 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-12 11:20:45,137 INFO L82 PathProgramCache]: Analyzing trace with hash -1022800842, now seen corresponding path program 3 times [2018-04-12 11:20:45,137 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 11:20:45,138 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 11:20:45,138 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:20:45,138 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 11:20:45,138 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:20:45,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:20:45,151 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 11:20:45,239 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2018-04-12 11:20:45,239 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 11:20:45,239 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 11:20:45,257 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-04-12 11:20:45,339 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 10 check-sat command(s) [2018-04-12 11:20:45,339 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 11:20:45,341 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 11:20:45,358 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 162 refuted. 0 times theorem prover too weak. 162 trivial. 0 not checked. [2018-04-12 11:20:45,378 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 11:20:45,379 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 12] total 15 [2018-04-12 11:20:45,379 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2018-04-12 11:20:45,379 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2018-04-12 11:20:45,379 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=128, Unknown=0, NotChecked=0, Total=210 [2018-04-12 11:20:45,379 INFO L87 Difference]: Start difference. First operand 105 states and 106 transitions. Second operand 15 states. [2018-04-12 11:20:45,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 11:20:45,480 INFO L93 Difference]: Finished difference Result 117 states and 118 transitions. [2018-04-12 11:20:45,480 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2018-04-12 11:20:45,480 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 99 [2018-04-12 11:20:45,480 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 11:20:45,481 INFO L225 Difference]: With dead ends: 117 [2018-04-12 11:20:45,481 INFO L226 Difference]: Without dead ends: 117 [2018-04-12 11:20:45,481 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 132 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=213, Invalid=387, Unknown=0, NotChecked=0, Total=600 [2018-04-12 11:20:45,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2018-04-12 11:20:45,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 113. [2018-04-12 11:20:45,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2018-04-12 11:20:45,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 114 transitions. [2018-04-12 11:20:45,484 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 114 transitions. Word has length 99 [2018-04-12 11:20:45,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 11:20:45,484 INFO L459 AbstractCegarLoop]: Abstraction has 113 states and 114 transitions. [2018-04-12 11:20:45,484 INFO L460 AbstractCegarLoop]: Interpolant automaton has 15 states. [2018-04-12 11:20:45,484 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 114 transitions. [2018-04-12 11:20:45,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2018-04-12 11:20:45,485 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 11:20:45,485 INFO L355 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 11:20:45,485 INFO L408 AbstractCegarLoop]: === Iteration 14 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-12 11:20:45,485 INFO L82 PathProgramCache]: Analyzing trace with hash 282730262, now seen corresponding path program 4 times [2018-04-12 11:20:45,485 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 11:20:45,485 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 11:20:45,485 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:20:45,486 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 11:20:45,486 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:20:45,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:20:45,498 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 11:20:45,583 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 200 refuted. 0 times theorem prover too weak. 200 trivial. 0 not checked. [2018-04-12 11:20:45,583 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 11:20:45,584 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 11:20:45,589 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-04-12 11:20:45,609 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-04-12 11:20:45,609 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 11:20:45,612 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 11:20:45,613 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-04-12 11:20:45,614 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-12 11:20:45,615 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-12 11:20:45,615 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:8, output treesize:7 [2018-04-12 11:20:45,883 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2018-04-12 11:20:45,884 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-12 11:20:45,886 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-04-12 11:20:45,886 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:24, output treesize:17 [2018-04-12 11:20:45,930 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 171 proven. 229 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 11:20:45,947 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 11:20:45,947 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 28] total 41 [2018-04-12 11:20:45,947 INFO L442 AbstractCegarLoop]: Interpolant automaton has 41 states [2018-04-12 11:20:45,947 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2018-04-12 11:20:45,948 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=346, Invalid=1294, Unknown=0, NotChecked=0, Total=1640 [2018-04-12 11:20:45,948 INFO L87 Difference]: Start difference. First operand 113 states and 114 transitions. Second operand 41 states. [2018-04-12 11:20:46,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 11:20:46,228 INFO L93 Difference]: Finished difference Result 125 states and 126 transitions. [2018-04-12 11:20:46,228 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-04-12 11:20:46,229 INFO L78 Accepts]: Start accepts. Automaton has 41 states. Word has length 107 [2018-04-12 11:20:46,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 11:20:46,229 INFO L225 Difference]: With dead ends: 125 [2018-04-12 11:20:46,229 INFO L226 Difference]: Without dead ends: 125 [2018-04-12 11:20:46,230 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1081 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=613, Invalid=2579, Unknown=0, NotChecked=0, Total=3192 [2018-04-12 11:20:46,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2018-04-12 11:20:46,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 121. [2018-04-12 11:20:46,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 121 states. [2018-04-12 11:20:46,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 122 transitions. [2018-04-12 11:20:46,232 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 122 transitions. Word has length 107 [2018-04-12 11:20:46,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 11:20:46,232 INFO L459 AbstractCegarLoop]: Abstraction has 121 states and 122 transitions. [2018-04-12 11:20:46,232 INFO L460 AbstractCegarLoop]: Interpolant automaton has 41 states. [2018-04-12 11:20:46,232 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 122 transitions. [2018-04-12 11:20:46,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2018-04-12 11:20:46,233 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 11:20:46,233 INFO L355 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 11:20:46,233 INFO L408 AbstractCegarLoop]: === Iteration 15 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-12 11:20:46,233 INFO L82 PathProgramCache]: Analyzing trace with hash 233077494, now seen corresponding path program 5 times [2018-04-12 11:20:46,233 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 11:20:46,233 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 11:20:46,234 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:20:46,234 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 11:20:46,234 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:20:46,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:20:46,246 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 11:20:46,350 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2018-04-12 11:20:46,350 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 11:20:46,351 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 11:20:46,356 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-04-12 11:20:47,265 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 12 check-sat command(s) [2018-04-12 11:20:47,265 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 11:20:47,269 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 11:20:47,283 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 242 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2018-04-12 11:20:47,302 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 11:20:47,302 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 14] total 17 [2018-04-12 11:20:47,303 INFO L442 AbstractCegarLoop]: Interpolant automaton has 17 states [2018-04-12 11:20:47,303 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2018-04-12 11:20:47,303 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=163, Unknown=0, NotChecked=0, Total=272 [2018-04-12 11:20:47,303 INFO L87 Difference]: Start difference. First operand 121 states and 122 transitions. Second operand 17 states. [2018-04-12 11:20:47,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 11:20:47,432 INFO L93 Difference]: Finished difference Result 133 states and 134 transitions. [2018-04-12 11:20:47,433 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2018-04-12 11:20:47,433 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 115 [2018-04-12 11:20:47,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 11:20:47,433 INFO L225 Difference]: With dead ends: 133 [2018-04-12 11:20:47,433 INFO L226 Difference]: Without dead ends: 133 [2018-04-12 11:20:47,434 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 154 GetRequests, 127 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=290, Invalid=522, Unknown=0, NotChecked=0, Total=812 [2018-04-12 11:20:47,434 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2018-04-12 11:20:47,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 129. [2018-04-12 11:20:47,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 129 states. [2018-04-12 11:20:47,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 130 transitions. [2018-04-12 11:20:47,436 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 130 transitions. Word has length 115 [2018-04-12 11:20:47,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 11:20:47,436 INFO L459 AbstractCegarLoop]: Abstraction has 129 states and 130 transitions. [2018-04-12 11:20:47,436 INFO L460 AbstractCegarLoop]: Interpolant automaton has 17 states. [2018-04-12 11:20:47,436 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 130 transitions. [2018-04-12 11:20:47,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2018-04-12 11:20:47,438 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 11:20:47,438 INFO L355 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 11:20:47,438 INFO L408 AbstractCegarLoop]: === Iteration 16 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-12 11:20:47,438 INFO L82 PathProgramCache]: Analyzing trace with hash -1556946986, now seen corresponding path program 6 times [2018-04-12 11:20:47,438 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 11:20:47,439 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 11:20:47,439 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:20:47,439 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 11:20:47,439 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:20:47,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:20:47,456 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 11:20:47,581 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2018-04-12 11:20:47,582 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 11:20:47,582 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 11:20:47,587 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-04-12 11:20:47,898 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 13 check-sat command(s) [2018-04-12 11:20:47,898 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 11:20:47,901 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 11:20:47,916 INFO L134 CoverageAnalysis]: Checked inductivity of 576 backedges. 0 proven. 288 refuted. 0 times theorem prover too weak. 288 trivial. 0 not checked. [2018-04-12 11:20:47,935 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 11:20:47,935 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 15] total 18 [2018-04-12 11:20:47,935 INFO L442 AbstractCegarLoop]: Interpolant automaton has 18 states [2018-04-12 11:20:47,935 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2018-04-12 11:20:47,936 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=182, Unknown=0, NotChecked=0, Total=306 [2018-04-12 11:20:47,936 INFO L87 Difference]: Start difference. First operand 129 states and 130 transitions. Second operand 18 states. [2018-04-12 11:20:48,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 11:20:48,069 INFO L93 Difference]: Finished difference Result 141 states and 142 transitions. [2018-04-12 11:20:48,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2018-04-12 11:20:48,069 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 123 [2018-04-12 11:20:48,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 11:20:48,070 INFO L225 Difference]: With dead ends: 141 [2018-04-12 11:20:48,070 INFO L226 Difference]: Without dead ends: 141 [2018-04-12 11:20:48,070 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=333, Invalid=597, Unknown=0, NotChecked=0, Total=930 [2018-04-12 11:20:48,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2018-04-12 11:20:48,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 137. [2018-04-12 11:20:48,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2018-04-12 11:20:48,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 138 transitions. [2018-04-12 11:20:48,072 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 138 transitions. Word has length 123 [2018-04-12 11:20:48,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 11:20:48,072 INFO L459 AbstractCegarLoop]: Abstraction has 137 states and 138 transitions. [2018-04-12 11:20:48,072 INFO L460 AbstractCegarLoop]: Interpolant automaton has 18 states. [2018-04-12 11:20:48,072 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 138 transitions. [2018-04-12 11:20:48,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2018-04-12 11:20:48,073 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 11:20:48,073 INFO L355 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 11:20:48,073 INFO L408 AbstractCegarLoop]: === Iteration 17 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-12 11:20:48,073 INFO L82 PathProgramCache]: Analyzing trace with hash 1234161078, now seen corresponding path program 7 times [2018-04-12 11:20:48,073 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 11:20:48,073 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 11:20:48,074 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:20:48,074 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 11:20:48,074 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:20:48,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:20:48,083 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 11:20:48,190 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2018-04-12 11:20:48,190 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 11:20:48,191 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 11:20:48,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 11:20:48,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:20:48,230 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 11:20:48,370 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 0 proven. 338 refuted. 0 times theorem prover too weak. 338 trivial. 0 not checked. [2018-04-12 11:20:48,388 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 11:20:48,388 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17] total 32 [2018-04-12 11:20:48,388 INFO L442 AbstractCegarLoop]: Interpolant automaton has 32 states [2018-04-12 11:20:48,388 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2018-04-12 11:20:48,388 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=361, Invalid=631, Unknown=0, NotChecked=0, Total=992 [2018-04-12 11:20:48,389 INFO L87 Difference]: Start difference. First operand 137 states and 138 transitions. Second operand 32 states. [2018-04-12 11:20:48,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 11:20:48,481 INFO L93 Difference]: Finished difference Result 149 states and 150 transitions. [2018-04-12 11:20:48,481 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2018-04-12 11:20:48,482 INFO L78 Accepts]: Start accepts. Automaton has 32 states. Word has length 131 [2018-04-12 11:20:48,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 11:20:48,482 INFO L225 Difference]: With dead ends: 149 [2018-04-12 11:20:48,482 INFO L226 Difference]: Without dead ends: 149 [2018-04-12 11:20:48,482 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 149 GetRequests, 117 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 375 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=392, Invalid=664, Unknown=0, NotChecked=0, Total=1056 [2018-04-12 11:20:48,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2018-04-12 11:20:48,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 145. [2018-04-12 11:20:48,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2018-04-12 11:20:48,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 146 transitions. [2018-04-12 11:20:48,485 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 146 transitions. Word has length 131 [2018-04-12 11:20:48,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 11:20:48,485 INFO L459 AbstractCegarLoop]: Abstraction has 145 states and 146 transitions. [2018-04-12 11:20:48,485 INFO L460 AbstractCegarLoop]: Interpolant automaton has 32 states. [2018-04-12 11:20:48,485 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 146 transitions. [2018-04-12 11:20:48,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2018-04-12 11:20:48,485 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 11:20:48,485 INFO L355 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 11:20:48,485 INFO L408 AbstractCegarLoop]: === Iteration 18 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-12 11:20:48,485 INFO L82 PathProgramCache]: Analyzing trace with hash 696632470, now seen corresponding path program 8 times [2018-04-12 11:20:48,486 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 11:20:48,486 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 11:20:48,486 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:20:48,486 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 11:20:48,486 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:20:48,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:20:48,502 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 11:20:48,618 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2018-04-12 11:20:48,618 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 11:20:48,618 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 11:20:48,623 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-12 11:20:48,647 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-12 11:20:48,648 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 11:20:48,649 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 11:20:48,766 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 0 proven. 392 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2018-04-12 11:20:48,789 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 11:20:48,789 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 18] total 34 [2018-04-12 11:20:48,790 INFO L442 AbstractCegarLoop]: Interpolant automaton has 34 states [2018-04-12 11:20:48,790 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2018-04-12 11:20:48,790 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=409, Invalid=713, Unknown=0, NotChecked=0, Total=1122 [2018-04-12 11:20:48,790 INFO L87 Difference]: Start difference. First operand 145 states and 146 transitions. Second operand 34 states. [2018-04-12 11:20:48,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 11:20:48,914 INFO L93 Difference]: Finished difference Result 157 states and 158 transitions. [2018-04-12 11:20:48,915 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2018-04-12 11:20:48,915 INFO L78 Accepts]: Start accepts. Automaton has 34 states. Word has length 139 [2018-04-12 11:20:48,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 11:20:48,915 INFO L225 Difference]: With dead ends: 157 [2018-04-12 11:20:48,915 INFO L226 Difference]: Without dead ends: 157 [2018-04-12 11:20:48,916 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 124 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 432 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=442, Invalid=748, Unknown=0, NotChecked=0, Total=1190 [2018-04-12 11:20:48,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 157 states. [2018-04-12 11:20:48,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 157 to 153. [2018-04-12 11:20:48,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 153 states. [2018-04-12 11:20:48,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 154 transitions. [2018-04-12 11:20:48,918 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 154 transitions. Word has length 139 [2018-04-12 11:20:48,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 11:20:48,918 INFO L459 AbstractCegarLoop]: Abstraction has 153 states and 154 transitions. [2018-04-12 11:20:48,919 INFO L460 AbstractCegarLoop]: Interpolant automaton has 34 states. [2018-04-12 11:20:48,919 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 154 transitions. [2018-04-12 11:20:48,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2018-04-12 11:20:48,919 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 11:20:48,919 INFO L355 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 11:20:48,920 INFO L408 AbstractCegarLoop]: === Iteration 19 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-12 11:20:48,920 INFO L82 PathProgramCache]: Analyzing trace with hash 996099190, now seen corresponding path program 9 times [2018-04-12 11:20:48,920 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 11:20:48,920 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 11:20:48,921 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:20:48,921 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 11:20:48,921 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:20:48,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:20:48,936 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 11:20:49,072 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 0 proven. 450 refuted. 0 times theorem prover too weak. 450 trivial. 0 not checked. [2018-04-12 11:20:49,073 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 11:20:49,073 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 11:20:49,078 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-04-12 11:20:49,939 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 16 check-sat command(s) [2018-04-12 11:20:49,940 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 11:20:49,944 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 11:20:50,133 INFO L134 CoverageAnalysis]: Checked inductivity of 900 backedges. 58 proven. 450 refuted. 0 times theorem prover too weak. 392 trivial. 0 not checked. [2018-04-12 11:20:50,152 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 11:20:50,152 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 22] total 40 [2018-04-12 11:20:50,152 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-04-12 11:20:50,153 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-04-12 11:20:50,153 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=524, Invalid=1036, Unknown=0, NotChecked=0, Total=1560 [2018-04-12 11:20:50,153 INFO L87 Difference]: Start difference. First operand 153 states and 154 transitions. Second operand 40 states. [2018-04-12 11:20:50,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 11:20:50,293 INFO L93 Difference]: Finished difference Result 171 states and 173 transitions. [2018-04-12 11:20:50,293 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-04-12 11:20:50,293 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 147 [2018-04-12 11:20:50,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 11:20:50,293 INFO L225 Difference]: With dead ends: 171 [2018-04-12 11:20:50,294 INFO L226 Difference]: Without dead ends: 171 [2018-04-12 11:20:50,294 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=562, Invalid=1078, Unknown=0, NotChecked=0, Total=1640 [2018-04-12 11:20:50,294 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 171 states. [2018-04-12 11:20:50,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 171 to 165. [2018-04-12 11:20:50,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2018-04-12 11:20:50,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 166 transitions. [2018-04-12 11:20:50,297 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 166 transitions. Word has length 147 [2018-04-12 11:20:50,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 11:20:50,297 INFO L459 AbstractCegarLoop]: Abstraction has 165 states and 166 transitions. [2018-04-12 11:20:50,297 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-04-12 11:20:50,297 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 166 transitions. [2018-04-12 11:20:50,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2018-04-12 11:20:50,298 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 11:20:50,298 INFO L355 BasicCegarLoop]: trace histogram [18, 17, 17, 17, 17, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 11:20:50,298 INFO L408 AbstractCegarLoop]: === Iteration 20 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-12 11:20:50,298 INFO L82 PathProgramCache]: Analyzing trace with hash 1532151789, now seen corresponding path program 10 times [2018-04-12 11:20:50,299 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 11:20:50,299 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 11:20:50,299 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:20:50,299 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 11:20:50,299 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:20:50,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:20:50,316 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 11:20:50,487 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 0 proven. 578 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2018-04-12 11:20:50,487 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 11:20:50,487 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 11:20:50,492 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-04-12 11:20:51,284 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-04-12 11:20:51,284 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 11:20:51,288 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 11:20:51,439 INFO L134 CoverageAnalysis]: Checked inductivity of 1090 backedges. 0 proven. 578 refuted. 0 times theorem prover too weak. 512 trivial. 0 not checked. [2018-04-12 11:20:51,457 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 11:20:51,457 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [22, 21] total 40 [2018-04-12 11:20:51,457 INFO L442 AbstractCegarLoop]: Interpolant automaton has 40 states [2018-04-12 11:20:51,457 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2018-04-12 11:20:51,458 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=571, Invalid=989, Unknown=0, NotChecked=0, Total=1560 [2018-04-12 11:20:51,458 INFO L87 Difference]: Start difference. First operand 165 states and 166 transitions. Second operand 40 states. [2018-04-12 11:20:51,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 11:20:51,589 INFO L93 Difference]: Finished difference Result 181 states and 182 transitions. [2018-04-12 11:20:51,589 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2018-04-12 11:20:51,589 INFO L78 Accepts]: Start accepts. Automaton has 40 states. Word has length 159 [2018-04-12 11:20:51,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 11:20:51,590 INFO L225 Difference]: With dead ends: 181 [2018-04-12 11:20:51,590 INFO L226 Difference]: Without dead ends: 181 [2018-04-12 11:20:51,590 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 627 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=610, Invalid=1030, Unknown=0, NotChecked=0, Total=1640 [2018-04-12 11:20:51,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2018-04-12 11:20:51,591 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 177. [2018-04-12 11:20:51,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2018-04-12 11:20:51,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 178 transitions. [2018-04-12 11:20:51,592 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 178 transitions. Word has length 159 [2018-04-12 11:20:51,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 11:20:51,592 INFO L459 AbstractCegarLoop]: Abstraction has 177 states and 178 transitions. [2018-04-12 11:20:51,592 INFO L460 AbstractCegarLoop]: Interpolant automaton has 40 states. [2018-04-12 11:20:51,592 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 178 transitions. [2018-04-12 11:20:51,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2018-04-12 11:20:51,593 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 11:20:51,593 INFO L355 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 11:20:51,593 INFO L408 AbstractCegarLoop]: === Iteration 21 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-12 11:20:51,593 INFO L82 PathProgramCache]: Analyzing trace with hash 459930134, now seen corresponding path program 11 times [2018-04-12 11:20:51,593 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 11:20:51,593 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 11:20:51,593 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:20:51,593 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 11:20:51,594 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:20:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:20:51,606 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 11:20:51,816 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2018-04-12 11:20:51,816 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 11:20:51,816 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 11:20:51,821 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-04-12 11:21:16,962 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 19 check-sat command(s) [2018-04-12 11:21:16,963 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 11:21:16,982 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 11:21:16,998 INFO L134 CoverageAnalysis]: Checked inductivity of 1296 backedges. 0 proven. 648 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2018-04-12 11:21:17,021 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 11:21:17,022 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21] total 24 [2018-04-12 11:21:17,022 INFO L442 AbstractCegarLoop]: Interpolant automaton has 24 states [2018-04-12 11:21:17,022 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2018-04-12 11:21:17,022 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=235, Invalid=317, Unknown=0, NotChecked=0, Total=552 [2018-04-12 11:21:17,022 INFO L87 Difference]: Start difference. First operand 177 states and 178 transitions. Second operand 24 states. [2018-04-12 11:21:17,245 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 11:21:17,245 INFO L93 Difference]: Finished difference Result 189 states and 190 transitions. [2018-04-12 11:21:17,245 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2018-04-12 11:21:17,245 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 171 [2018-04-12 11:21:17,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 11:21:17,246 INFO L225 Difference]: With dead ends: 189 [2018-04-12 11:21:17,246 INFO L226 Difference]: Without dead ends: 189 [2018-04-12 11:21:17,246 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 190 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 240 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=654, Invalid=1152, Unknown=0, NotChecked=0, Total=1806 [2018-04-12 11:21:17,246 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 189 states. [2018-04-12 11:21:17,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 189 to 185. [2018-04-12 11:21:17,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 185 states. [2018-04-12 11:21:17,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 185 states to 185 states and 186 transitions. [2018-04-12 11:21:17,249 INFO L78 Accepts]: Start accepts. Automaton has 185 states and 186 transitions. Word has length 171 [2018-04-12 11:21:17,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 11:21:17,250 INFO L459 AbstractCegarLoop]: Abstraction has 185 states and 186 transitions. [2018-04-12 11:21:17,250 INFO L460 AbstractCegarLoop]: Interpolant automaton has 24 states. [2018-04-12 11:21:17,250 INFO L276 IsEmpty]: Start isEmpty. Operand 185 states and 186 transitions. [2018-04-12 11:21:17,250 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2018-04-12 11:21:17,251 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 11:21:17,251 INFO L355 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 11:21:17,251 INFO L408 AbstractCegarLoop]: === Iteration 22 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-12 11:21:17,251 INFO L82 PathProgramCache]: Analyzing trace with hash 1119526390, now seen corresponding path program 12 times [2018-04-12 11:21:17,251 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 11:21:17,251 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 11:21:17,252 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:21:17,252 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 11:21:17,252 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:21:17,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:21:17,270 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 11:21:17,524 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 0 proven. 722 refuted. 0 times theorem prover too weak. 722 trivial. 0 not checked. [2018-04-12 11:21:17,524 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 11:21:17,524 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 11:21:17,532 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-04-12 11:21:25,242 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 20 check-sat command(s) [2018-04-12 11:21:25,242 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 11:21:25,255 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 11:21:25,536 INFO L134 CoverageAnalysis]: Checked inductivity of 1444 backedges. 74 proven. 722 refuted. 0 times theorem prover too weak. 648 trivial. 0 not checked. [2018-04-12 11:21:25,557 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 11:21:25,557 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 26] total 48 [2018-04-12 11:21:25,557 INFO L442 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-04-12 11:21:25,558 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-04-12 11:21:25,558 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=770, Invalid=1486, Unknown=0, NotChecked=0, Total=2256 [2018-04-12 11:21:25,558 INFO L87 Difference]: Start difference. First operand 185 states and 186 transitions. Second operand 48 states. [2018-04-12 11:21:25,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 11:21:25,763 INFO L93 Difference]: Finished difference Result 203 states and 205 transitions. [2018-04-12 11:21:25,763 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-04-12 11:21:25,763 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 179 [2018-04-12 11:21:25,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 11:21:25,764 INFO L225 Difference]: With dead ends: 203 [2018-04-12 11:21:25,764 INFO L226 Difference]: Without dead ends: 203 [2018-04-12 11:21:25,764 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 203 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 893 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=816, Invalid=1536, Unknown=0, NotChecked=0, Total=2352 [2018-04-12 11:21:25,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 203 states. [2018-04-12 11:21:25,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 203 to 197. [2018-04-12 11:21:25,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 197 states. [2018-04-12 11:21:25,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 198 transitions. [2018-04-12 11:21:25,767 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 198 transitions. Word has length 179 [2018-04-12 11:21:25,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 11:21:25,767 INFO L459 AbstractCegarLoop]: Abstraction has 197 states and 198 transitions. [2018-04-12 11:21:25,767 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-04-12 11:21:25,767 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 198 transitions. [2018-04-12 11:21:25,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2018-04-12 11:21:25,768 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 11:21:25,768 INFO L355 BasicCegarLoop]: trace histogram [22, 21, 21, 21, 21, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 11:21:25,768 INFO L408 AbstractCegarLoop]: === Iteration 23 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-12 11:21:25,769 INFO L82 PathProgramCache]: Analyzing trace with hash 1906780525, now seen corresponding path program 13 times [2018-04-12 11:21:25,769 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 11:21:25,769 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 11:21:25,769 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:21:25,769 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 11:21:25,769 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:21:25,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:21:25,789 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 11:21:26,112 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 0 proven. 882 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2018-04-12 11:21:26,112 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 11:21:26,112 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 11:21:26,120 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 11:21:26,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:21:26,178 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 11:21:26,473 INFO L134 CoverageAnalysis]: Checked inductivity of 1682 backedges. 0 proven. 882 refuted. 0 times theorem prover too weak. 800 trivial. 0 not checked. [2018-04-12 11:21:26,500 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 11:21:26,501 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 48 [2018-04-12 11:21:26,501 INFO L442 AbstractCegarLoop]: Interpolant automaton has 48 states [2018-04-12 11:21:26,501 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 48 interpolants. [2018-04-12 11:21:26,502 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=829, Invalid=1427, Unknown=0, NotChecked=0, Total=2256 [2018-04-12 11:21:26,502 INFO L87 Difference]: Start difference. First operand 197 states and 198 transitions. Second operand 48 states. [2018-04-12 11:21:26,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 11:21:26,646 INFO L93 Difference]: Finished difference Result 213 states and 214 transitions. [2018-04-12 11:21:26,646 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2018-04-12 11:21:26,646 INFO L78 Accepts]: Start accepts. Automaton has 48 states. Word has length 191 [2018-04-12 11:21:26,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 11:21:26,646 INFO L225 Difference]: With dead ends: 213 [2018-04-12 11:21:26,646 INFO L226 Difference]: Without dead ends: 213 [2018-04-12 11:21:26,647 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 217 GetRequests, 169 SyntacticMatches, 1 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 943 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=876, Invalid=1476, Unknown=0, NotChecked=0, Total=2352 [2018-04-12 11:21:26,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 213 states. [2018-04-12 11:21:26,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 213 to 209. [2018-04-12 11:21:26,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 209 states. [2018-04-12 11:21:26,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 209 states to 209 states and 210 transitions. [2018-04-12 11:21:26,649 INFO L78 Accepts]: Start accepts. Automaton has 209 states and 210 transitions. Word has length 191 [2018-04-12 11:21:26,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 11:21:26,649 INFO L459 AbstractCegarLoop]: Abstraction has 209 states and 210 transitions. [2018-04-12 11:21:26,649 INFO L460 AbstractCegarLoop]: Interpolant automaton has 48 states. [2018-04-12 11:21:26,649 INFO L276 IsEmpty]: Start isEmpty. Operand 209 states and 210 transitions. [2018-04-12 11:21:26,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2018-04-12 11:21:26,650 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 11:21:26,650 INFO L355 BasicCegarLoop]: trace histogram [23, 23, 22, 22, 22, 22, 22, 22, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 11:21:26,650 INFO L408 AbstractCegarLoop]: === Iteration 24 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-12 11:21:26,650 INFO L82 PathProgramCache]: Analyzing trace with hash -785989738, now seen corresponding path program 14 times [2018-04-12 11:21:26,650 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 11:21:26,650 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 11:21:26,650 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:21:26,651 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 11:21:26,651 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:21:26,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:21:26,662 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 11:21:26,891 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2018-04-12 11:21:26,891 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 11:21:26,891 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 11:21:26,902 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-12 11:21:26,963 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-12 11:21:26,963 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 11:21:26,965 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 11:21:27,205 INFO L134 CoverageAnalysis]: Checked inductivity of 1936 backedges. 0 proven. 968 refuted. 0 times theorem prover too weak. 968 trivial. 0 not checked. [2018-04-12 11:21:27,224 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 11:21:27,224 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [27, 26] total 50 [2018-04-12 11:21:27,224 INFO L442 AbstractCegarLoop]: Interpolant automaton has 50 states [2018-04-12 11:21:27,224 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2018-04-12 11:21:27,225 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=901, Invalid=1549, Unknown=0, NotChecked=0, Total=2450 [2018-04-12 11:21:27,225 INFO L87 Difference]: Start difference. First operand 209 states and 210 transitions. Second operand 50 states. [2018-04-12 11:21:27,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 11:21:27,522 INFO L93 Difference]: Finished difference Result 221 states and 222 transitions. [2018-04-12 11:21:27,522 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2018-04-12 11:21:27,522 INFO L78 Accepts]: Start accepts. Automaton has 50 states. Word has length 203 [2018-04-12 11:21:27,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 11:21:27,523 INFO L225 Difference]: With dead ends: 221 [2018-04-12 11:21:27,523 INFO L226 Difference]: Without dead ends: 221 [2018-04-12 11:21:27,524 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 180 SyntacticMatches, 1 SemanticMatches, 49 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1032 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=950, Invalid=1600, Unknown=0, NotChecked=0, Total=2550 [2018-04-12 11:21:27,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2018-04-12 11:21:27,526 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 217. [2018-04-12 11:21:27,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 217 states. [2018-04-12 11:21:27,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 217 states to 217 states and 218 transitions. [2018-04-12 11:21:27,527 INFO L78 Accepts]: Start accepts. Automaton has 217 states and 218 transitions. Word has length 203 [2018-04-12 11:21:27,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 11:21:27,528 INFO L459 AbstractCegarLoop]: Abstraction has 217 states and 218 transitions. [2018-04-12 11:21:27,528 INFO L460 AbstractCegarLoop]: Interpolant automaton has 50 states. [2018-04-12 11:21:27,528 INFO L276 IsEmpty]: Start isEmpty. Operand 217 states and 218 transitions. [2018-04-12 11:21:27,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2018-04-12 11:21:27,529 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 11:21:27,529 INFO L355 BasicCegarLoop]: trace histogram [24, 24, 23, 23, 23, 23, 23, 23, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 11:21:27,529 INFO L408 AbstractCegarLoop]: === Iteration 25 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-12 11:21:27,529 INFO L82 PathProgramCache]: Analyzing trace with hash -23689354, now seen corresponding path program 15 times [2018-04-12 11:21:27,529 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 11:21:27,529 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 11:21:27,530 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:21:27,530 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 11:21:27,530 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:21:27,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:21:27,549 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 11:21:27,848 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 1058 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2018-04-12 11:21:27,848 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 11:21:27,848 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 11:21:27,856 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-04-12 11:21:35,858 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 24 check-sat command(s) [2018-04-12 11:21:35,859 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 11:21:35,867 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 11:21:35,917 INFO L134 CoverageAnalysis]: Checked inductivity of 2116 backedges. 0 proven. 1058 refuted. 0 times theorem prover too weak. 1058 trivial. 0 not checked. [2018-04-12 11:21:35,938 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 11:21:35,938 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [28, 26] total 29 [2018-04-12 11:21:35,938 INFO L442 AbstractCegarLoop]: Interpolant automaton has 29 states [2018-04-12 11:21:35,939 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2018-04-12 11:21:35,939 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=355, Invalid=457, Unknown=0, NotChecked=0, Total=812 [2018-04-12 11:21:35,939 INFO L87 Difference]: Start difference. First operand 217 states and 218 transitions. Second operand 29 states. [2018-04-12 11:21:36,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 11:21:36,392 INFO L93 Difference]: Finished difference Result 229 states and 230 transitions. [2018-04-12 11:21:36,393 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2018-04-12 11:21:36,393 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 211 [2018-04-12 11:21:36,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 11:21:36,394 INFO L225 Difference]: With dead ends: 229 [2018-04-12 11:21:36,394 INFO L226 Difference]: Without dead ends: 229 [2018-04-12 11:21:36,395 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 286 GetRequests, 235 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 365 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1004, Invalid=1752, Unknown=0, NotChecked=0, Total=2756 [2018-04-12 11:21:36,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 229 states. [2018-04-12 11:21:36,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 229 to 225. [2018-04-12 11:21:36,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2018-04-12 11:21:36,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 226 transitions. [2018-04-12 11:21:36,399 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 226 transitions. Word has length 211 [2018-04-12 11:21:36,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 11:21:36,399 INFO L459 AbstractCegarLoop]: Abstraction has 225 states and 226 transitions. [2018-04-12 11:21:36,399 INFO L460 AbstractCegarLoop]: Interpolant automaton has 29 states. [2018-04-12 11:21:36,399 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 226 transitions. [2018-04-12 11:21:36,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2018-04-12 11:21:36,400 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 11:21:36,400 INFO L355 BasicCegarLoop]: trace histogram [25, 25, 24, 24, 24, 24, 24, 24, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 11:21:36,400 INFO L408 AbstractCegarLoop]: === Iteration 26 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-12 11:21:36,400 INFO L82 PathProgramCache]: Analyzing trace with hash 1028151382, now seen corresponding path program 16 times [2018-04-12 11:21:36,400 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 11:21:36,401 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 11:21:36,401 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:21:36,401 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 11:21:36,401 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:21:36,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:21:36,420 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 11:21:36,760 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 0 proven. 1152 refuted. 0 times theorem prover too weak. 1152 trivial. 0 not checked. [2018-04-12 11:21:36,760 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 11:21:36,760 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 11:21:36,767 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-04-12 11:21:36,827 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-04-12 11:21:36,827 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 11:21:36,832 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 11:21:36,835 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-04-12 11:21:36,835 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-12 11:21:36,838 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-12 11:21:36,838 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:8, output treesize:7 [2018-04-12 11:21:37,995 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2018-04-12 11:21:37,996 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-12 11:21:38,002 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-04-12 11:21:38,002 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:24, output treesize:17 [2018-04-12 11:21:38,108 INFO L134 CoverageAnalysis]: Checked inductivity of 2304 backedges. 1081 proven. 1223 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 11:21:38,126 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 11:21:38,126 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [29, 56] total 83 [2018-04-12 11:21:38,126 INFO L442 AbstractCegarLoop]: Interpolant automaton has 83 states [2018-04-12 11:21:38,126 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 83 interpolants. [2018-04-12 11:21:38,127 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1466, Invalid=5340, Unknown=0, NotChecked=0, Total=6806 [2018-04-12 11:21:38,127 INFO L87 Difference]: Start difference. First operand 225 states and 226 transitions. Second operand 83 states. [2018-04-12 11:21:38,909 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 11:21:38,909 INFO L93 Difference]: Finished difference Result 237 states and 238 transitions. [2018-04-12 11:21:38,909 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-04-12 11:21:38,909 INFO L78 Accepts]: Start accepts. Automaton has 83 states. Word has length 219 [2018-04-12 11:21:38,909 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 11:21:38,910 INFO L225 Difference]: With dead ends: 237 [2018-04-12 11:21:38,910 INFO L226 Difference]: Without dead ends: 237 [2018-04-12 11:21:38,911 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 278 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4903 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2566, Invalid=10090, Unknown=0, NotChecked=0, Total=12656 [2018-04-12 11:21:38,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 237 states. [2018-04-12 11:21:38,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 237 to 233. [2018-04-12 11:21:38,913 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 233 states. [2018-04-12 11:21:38,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 233 states to 233 states and 234 transitions. [2018-04-12 11:21:38,919 INFO L78 Accepts]: Start accepts. Automaton has 233 states and 234 transitions. Word has length 219 [2018-04-12 11:21:38,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 11:21:38,919 INFO L459 AbstractCegarLoop]: Abstraction has 233 states and 234 transitions. [2018-04-12 11:21:38,920 INFO L460 AbstractCegarLoop]: Interpolant automaton has 83 states. [2018-04-12 11:21:38,920 INFO L276 IsEmpty]: Start isEmpty. Operand 233 states and 234 transitions. [2018-04-12 11:21:38,920 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 228 [2018-04-12 11:21:38,920 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 11:21:38,920 INFO L355 BasicCegarLoop]: trace histogram [26, 26, 25, 25, 25, 25, 25, 25, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 11:21:38,920 INFO L408 AbstractCegarLoop]: === Iteration 27 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-12 11:21:38,920 INFO L82 PathProgramCache]: Analyzing trace with hash -2096713162, now seen corresponding path program 17 times [2018-04-12 11:21:38,921 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 11:21:38,921 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 11:21:38,921 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:21:38,921 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 11:21:38,921 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:21:38,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:21:38,933 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 11:21:39,257 INFO L134 CoverageAnalysis]: Checked inductivity of 2500 backedges. 0 proven. 1250 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2018-04-12 11:21:39,258 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 11:21:39,258 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 11:21:39,265 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-04-12 11:23:17,068 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 26 check-sat command(s) [2018-04-12 11:23:17,068 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 11:23:17,114 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 11:23:17,142 INFO L134 CoverageAnalysis]: Checked inductivity of 2500 backedges. 0 proven. 1250 refuted. 0 times theorem prover too weak. 1250 trivial. 0 not checked. [2018-04-12 11:23:17,176 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 11:23:17,176 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 28] total 31 [2018-04-12 11:23:17,177 INFO L442 AbstractCegarLoop]: Interpolant automaton has 31 states [2018-04-12 11:23:17,177 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2018-04-12 11:23:17,177 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=410, Invalid=520, Unknown=0, NotChecked=0, Total=930 [2018-04-12 11:23:17,177 INFO L87 Difference]: Start difference. First operand 233 states and 234 transitions. Second operand 31 states. [2018-04-12 11:23:17,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 11:23:17,514 INFO L93 Difference]: Finished difference Result 245 states and 246 transitions. [2018-04-12 11:23:17,515 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2018-04-12 11:23:17,515 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 227 [2018-04-12 11:23:17,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 11:23:17,515 INFO L225 Difference]: With dead ends: 245 [2018-04-12 11:23:17,515 INFO L226 Difference]: Without dead ends: 245 [2018-04-12 11:23:17,516 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 308 GetRequests, 253 SyntacticMatches, 0 SemanticMatches, 55 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 422 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=1165, Invalid=2027, Unknown=0, NotChecked=0, Total=3192 [2018-04-12 11:23:17,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2018-04-12 11:23:17,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 241. [2018-04-12 11:23:17,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 241 states. [2018-04-12 11:23:17,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 242 transitions. [2018-04-12 11:23:17,519 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 242 transitions. Word has length 227 [2018-04-12 11:23:17,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 11:23:17,519 INFO L459 AbstractCegarLoop]: Abstraction has 241 states and 242 transitions. [2018-04-12 11:23:17,519 INFO L460 AbstractCegarLoop]: Interpolant automaton has 31 states. [2018-04-12 11:23:17,519 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 242 transitions. [2018-04-12 11:23:17,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 236 [2018-04-12 11:23:17,519 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 11:23:17,519 INFO L355 BasicCegarLoop]: trace histogram [27, 27, 26, 26, 26, 26, 26, 26, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 11:23:17,520 INFO L408 AbstractCegarLoop]: === Iteration 28 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-12 11:23:17,520 INFO L82 PathProgramCache]: Analyzing trace with hash -178514666, now seen corresponding path program 18 times [2018-04-12 11:23:17,520 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 11:23:17,520 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 11:23:17,520 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:23:17,520 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 11:23:17,520 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:23:17,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:23:17,539 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 11:23:17,806 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 0 proven. 1352 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2018-04-12 11:23:17,807 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 11:23:17,807 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 11:23:17,812 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-04-12 11:24:54,555 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 27 check-sat command(s) [2018-04-12 11:24:54,555 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 11:24:54,593 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 11:24:54,934 INFO L134 CoverageAnalysis]: Checked inductivity of 2704 backedges. 0 proven. 1352 refuted. 0 times theorem prover too weak. 1352 trivial. 0 not checked. [2018-04-12 11:24:54,964 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 11:24:54,964 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31] total 59 [2018-04-12 11:24:54,965 INFO L442 AbstractCegarLoop]: Interpolant automaton has 59 states [2018-04-12 11:24:54,965 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2018-04-12 11:24:54,965 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1222, Invalid=2200, Unknown=0, NotChecked=0, Total=3422 [2018-04-12 11:24:54,965 INFO L87 Difference]: Start difference. First operand 241 states and 242 transitions. Second operand 59 states. [2018-04-12 11:24:55,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 11:24:55,197 INFO L93 Difference]: Finished difference Result 253 states and 254 transitions. [2018-04-12 11:24:55,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-04-12 11:24:55,197 INFO L78 Accepts]: Start accepts. Automaton has 59 states. Word has length 235 [2018-04-12 11:24:55,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 11:24:55,198 INFO L225 Difference]: With dead ends: 253 [2018-04-12 11:24:55,198 INFO L226 Difference]: Without dead ends: 253 [2018-04-12 11:24:55,198 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 207 SyntacticMatches, 1 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1454 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1279, Invalid=2261, Unknown=0, NotChecked=0, Total=3540 [2018-04-12 11:24:55,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2018-04-12 11:24:55,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 249. [2018-04-12 11:24:55,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2018-04-12 11:24:55,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 250 transitions. [2018-04-12 11:24:55,201 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 250 transitions. Word has length 235 [2018-04-12 11:24:55,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 11:24:55,201 INFO L459 AbstractCegarLoop]: Abstraction has 249 states and 250 transitions. [2018-04-12 11:24:55,201 INFO L460 AbstractCegarLoop]: Interpolant automaton has 59 states. [2018-04-12 11:24:55,201 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 250 transitions. [2018-04-12 11:24:55,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2018-04-12 11:24:55,202 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 11:24:55,202 INFO L355 BasicCegarLoop]: trace histogram [28, 28, 27, 27, 27, 27, 27, 27, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 11:24:55,202 INFO L408 AbstractCegarLoop]: === Iteration 29 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-12 11:24:55,202 INFO L82 PathProgramCache]: Analyzing trace with hash 160628982, now seen corresponding path program 19 times [2018-04-12 11:24:55,202 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 11:24:55,202 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 11:24:55,203 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:24:55,203 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 11:24:55,203 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:24:55,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:24:55,217 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 11:24:55,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2916 backedges. 0 proven. 1458 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2018-04-12 11:24:55,539 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 11:24:55,539 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 11:24:55,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 11:24:55,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:24:55,593 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 11:24:55,967 INFO L134 CoverageAnalysis]: Checked inductivity of 2916 backedges. 0 proven. 1458 refuted. 0 times theorem prover too weak. 1458 trivial. 0 not checked. [2018-04-12 11:24:55,984 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 11:24:55,985 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [32, 31] total 60 [2018-04-12 11:24:55,985 INFO L442 AbstractCegarLoop]: Interpolant automaton has 60 states [2018-04-12 11:24:55,985 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 60 interpolants. [2018-04-12 11:24:55,985 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1306, Invalid=2234, Unknown=0, NotChecked=0, Total=3540 [2018-04-12 11:24:55,985 INFO L87 Difference]: Start difference. First operand 249 states and 250 transitions. Second operand 60 states. [2018-04-12 11:24:56,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 11:24:56,198 INFO L93 Difference]: Finished difference Result 261 states and 262 transitions. [2018-04-12 11:24:56,198 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2018-04-12 11:24:56,198 INFO L78 Accepts]: Start accepts. Automaton has 60 states. Word has length 243 [2018-04-12 11:24:56,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 11:24:56,199 INFO L225 Difference]: With dead ends: 261 [2018-04-12 11:24:56,199 INFO L226 Difference]: Without dead ends: 261 [2018-04-12 11:24:56,199 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 275 GetRequests, 215 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1537 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=1365, Invalid=2295, Unknown=0, NotChecked=0, Total=3660 [2018-04-12 11:24:56,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2018-04-12 11:24:56,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 257. [2018-04-12 11:24:56,202 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 257 states. [2018-04-12 11:24:56,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 258 transitions. [2018-04-12 11:24:56,203 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 258 transitions. Word has length 243 [2018-04-12 11:24:56,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 11:24:56,203 INFO L459 AbstractCegarLoop]: Abstraction has 257 states and 258 transitions. [2018-04-12 11:24:56,203 INFO L460 AbstractCegarLoop]: Interpolant automaton has 60 states. [2018-04-12 11:24:56,203 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 258 transitions. [2018-04-12 11:24:56,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 252 [2018-04-12 11:24:56,204 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 11:24:56,204 INFO L355 BasicCegarLoop]: trace histogram [29, 29, 28, 28, 28, 28, 28, 28, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 11:24:56,204 INFO L408 AbstractCegarLoop]: === Iteration 30 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-12 11:24:56,204 INFO L82 PathProgramCache]: Analyzing trace with hash -1531578922, now seen corresponding path program 20 times [2018-04-12 11:24:56,205 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 11:24:56,205 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 11:24:56,205 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:24:56,205 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 11:24:56,205 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:24:56,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:24:56,228 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 11:24:56,557 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 0 proven. 1568 refuted. 0 times theorem prover too weak. 1568 trivial. 0 not checked. [2018-04-12 11:24:56,557 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 11:24:56,557 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 11:24:56,563 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-12 11:24:56,600 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-12 11:24:56,600 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 11:24:56,603 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 11:24:56,988 INFO L134 CoverageAnalysis]: Checked inductivity of 3136 backedges. 0 proven. 1568 refuted. 0 times theorem prover too weak. 1568 trivial. 0 not checked. [2018-04-12 11:24:57,006 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 11:24:57,006 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 32] total 62 [2018-04-12 11:24:57,006 INFO L442 AbstractCegarLoop]: Interpolant automaton has 62 states [2018-04-12 11:24:57,007 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2018-04-12 11:24:57,007 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1396, Invalid=2386, Unknown=0, NotChecked=0, Total=3782 [2018-04-12 11:24:57,007 INFO L87 Difference]: Start difference. First operand 257 states and 258 transitions. Second operand 62 states. [2018-04-12 11:24:57,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 11:24:57,275 INFO L93 Difference]: Finished difference Result 269 states and 270 transitions. [2018-04-12 11:24:57,275 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2018-04-12 11:24:57,276 INFO L78 Accepts]: Start accepts. Automaton has 62 states. Word has length 251 [2018-04-12 11:24:57,276 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 11:24:57,277 INFO L225 Difference]: With dead ends: 269 [2018-04-12 11:24:57,277 INFO L226 Difference]: Without dead ends: 269 [2018-04-12 11:24:57,277 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 222 SyntacticMatches, 1 SemanticMatches, 61 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1650 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1457, Invalid=2449, Unknown=0, NotChecked=0, Total=3906 [2018-04-12 11:24:57,278 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 269 states. [2018-04-12 11:24:57,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 269 to 265. [2018-04-12 11:24:57,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 265 states. [2018-04-12 11:24:57,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 265 states to 265 states and 266 transitions. [2018-04-12 11:24:57,282 INFO L78 Accepts]: Start accepts. Automaton has 265 states and 266 transitions. Word has length 251 [2018-04-12 11:24:57,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 11:24:57,282 INFO L459 AbstractCegarLoop]: Abstraction has 265 states and 266 transitions. [2018-04-12 11:24:57,282 INFO L460 AbstractCegarLoop]: Interpolant automaton has 62 states. [2018-04-12 11:24:57,282 INFO L276 IsEmpty]: Start isEmpty. Operand 265 states and 266 transitions. [2018-04-12 11:24:57,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 260 [2018-04-12 11:24:57,283 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 11:24:57,283 INFO L355 BasicCegarLoop]: trace histogram [30, 30, 29, 29, 29, 29, 29, 29, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 11:24:57,284 INFO L408 AbstractCegarLoop]: === Iteration 31 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-12 11:24:57,284 INFO L82 PathProgramCache]: Analyzing trace with hash 999257014, now seen corresponding path program 21 times [2018-04-12 11:24:57,284 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 11:24:57,284 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 11:24:57,285 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:24:57,285 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 11:24:57,285 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:24:57,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:24:57,309 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 11:24:57,646 INFO L134 CoverageAnalysis]: Checked inductivity of 3364 backedges. 0 proven. 1682 refuted. 0 times theorem prover too weak. 1682 trivial. 0 not checked. [2018-04-12 11:24:57,646 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 11:24:57,646 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 11:24:57,651 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-04-12 11:25:42,208 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 30 check-sat command(s) [2018-04-12 11:25:42,208 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 11:25:42,226 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 11:25:42,679 INFO L134 CoverageAnalysis]: Checked inductivity of 3364 backedges. 114 proven. 1682 refuted. 0 times theorem prover too weak. 1568 trivial. 0 not checked. [2018-04-12 11:25:42,705 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 11:25:42,706 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 36] total 68 [2018-04-12 11:25:42,706 INFO L442 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-04-12 11:25:42,706 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-04-12 11:25:42,707 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1595, Invalid=2961, Unknown=0, NotChecked=0, Total=4556 [2018-04-12 11:25:42,707 INFO L87 Difference]: Start difference. First operand 265 states and 266 transitions. Second operand 68 states. [2018-04-12 11:25:42,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 11:25:42,938 INFO L93 Difference]: Finished difference Result 283 states and 285 transitions. [2018-04-12 11:25:42,938 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-04-12 11:25:42,938 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 259 [2018-04-12 11:25:42,938 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 11:25:42,939 INFO L225 Difference]: With dead ends: 283 [2018-04-12 11:25:42,939 INFO L226 Difference]: Without dead ends: 283 [2018-04-12 11:25:42,940 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 293 GetRequests, 226 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1943 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1661, Invalid=3031, Unknown=0, NotChecked=0, Total=4692 [2018-04-12 11:25:42,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283 states. [2018-04-12 11:25:42,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283 to 277. [2018-04-12 11:25:42,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 277 states. [2018-04-12 11:25:42,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 278 transitions. [2018-04-12 11:25:42,943 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 278 transitions. Word has length 259 [2018-04-12 11:25:42,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 11:25:42,944 INFO L459 AbstractCegarLoop]: Abstraction has 277 states and 278 transitions. [2018-04-12 11:25:42,944 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-04-12 11:25:42,944 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 278 transitions. [2018-04-12 11:25:42,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 272 [2018-04-12 11:25:42,945 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 11:25:42,945 INFO L355 BasicCegarLoop]: trace histogram [32, 31, 31, 31, 31, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 11:25:42,945 INFO L408 AbstractCegarLoop]: === Iteration 32 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-12 11:25:42,946 INFO L82 PathProgramCache]: Analyzing trace with hash 80974637, now seen corresponding path program 22 times [2018-04-12 11:25:42,946 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 11:25:42,946 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 11:25:42,946 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:25:42,946 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 11:25:42,947 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:25:42,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:25:42,972 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 11:25:43,350 INFO L134 CoverageAnalysis]: Checked inductivity of 3722 backedges. 0 proven. 1922 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2018-04-12 11:25:43,371 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 11:25:43,371 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 11:25:43,377 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-04-12 11:25:50,669 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-04-12 11:25:50,669 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 11:25:50,680 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 11:25:51,045 INFO L134 CoverageAnalysis]: Checked inductivity of 3722 backedges. 0 proven. 1922 refuted. 0 times theorem prover too weak. 1800 trivial. 0 not checked. [2018-04-12 11:25:51,070 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 11:25:51,070 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [36, 35] total 68 [2018-04-12 11:25:51,070 INFO L442 AbstractCegarLoop]: Interpolant automaton has 68 states [2018-04-12 11:25:51,070 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2018-04-12 11:25:51,071 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1684, Invalid=2872, Unknown=0, NotChecked=0, Total=4556 [2018-04-12 11:25:51,071 INFO L87 Difference]: Start difference. First operand 277 states and 278 transitions. Second operand 68 states. [2018-04-12 11:25:51,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 11:25:51,313 INFO L93 Difference]: Finished difference Result 293 states and 294 transitions. [2018-04-12 11:25:51,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2018-04-12 11:25:51,313 INFO L78 Accepts]: Start accepts. Automaton has 68 states. Word has length 271 [2018-04-12 11:25:51,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 11:25:51,314 INFO L225 Difference]: With dead ends: 293 [2018-04-12 11:25:51,314 INFO L226 Difference]: Without dead ends: 293 [2018-04-12 11:25:51,315 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 307 GetRequests, 239 SyntacticMatches, 1 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2013 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1751, Invalid=2941, Unknown=0, NotChecked=0, Total=4692 [2018-04-12 11:25:51,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2018-04-12 11:25:51,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 289. [2018-04-12 11:25:51,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2018-04-12 11:25:51,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 290 transitions. [2018-04-12 11:25:51,317 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 290 transitions. Word has length 271 [2018-04-12 11:25:51,317 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 11:25:51,317 INFO L459 AbstractCegarLoop]: Abstraction has 289 states and 290 transitions. [2018-04-12 11:25:51,318 INFO L460 AbstractCegarLoop]: Interpolant automaton has 68 states. [2018-04-12 11:25:51,318 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 290 transitions. [2018-04-12 11:25:51,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 284 [2018-04-12 11:25:51,318 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 11:25:51,319 INFO L355 BasicCegarLoop]: trace histogram [33, 33, 32, 32, 32, 32, 32, 32, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 11:25:51,319 INFO L408 AbstractCegarLoop]: === Iteration 33 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-12 11:25:51,319 INFO L82 PathProgramCache]: Analyzing trace with hash -2104745130, now seen corresponding path program 23 times [2018-04-12 11:25:51,319 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 11:25:51,319 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 11:25:51,319 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:25:51,319 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 11:25:51,319 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:25:51,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:25:51,336 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 11:25:51,709 INFO L134 CoverageAnalysis]: Checked inductivity of 4096 backedges. 0 proven. 2048 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2018-04-12 11:25:51,709 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 11:25:51,709 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 11:25:51,714 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 [2018-04-12 11:27:32,282 INFO L242 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 33 check-sat command(s) [2018-04-12 11:27:32,282 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 11:27:32,334 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 11:27:32,394 INFO L134 CoverageAnalysis]: Checked inductivity of 4096 backedges. 0 proven. 2048 refuted. 0 times theorem prover too weak. 2048 trivial. 0 not checked. [2018-04-12 11:27:32,439 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 11:27:32,439 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [37, 35] total 38 [2018-04-12 11:27:32,440 INFO L442 AbstractCegarLoop]: Interpolant automaton has 38 states [2018-04-12 11:27:32,440 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2018-04-12 11:27:32,440 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=634, Invalid=772, Unknown=0, NotChecked=0, Total=1406 [2018-04-12 11:27:32,440 INFO L87 Difference]: Start difference. First operand 289 states and 290 transitions. Second operand 38 states. [2018-04-12 11:27:32,905 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 11:27:32,905 INFO L93 Difference]: Finished difference Result 301 states and 302 transitions. [2018-04-12 11:27:32,905 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2018-04-12 11:27:32,905 INFO L78 Accepts]: Start accepts. Automaton has 38 states. Word has length 283 [2018-04-12 11:27:32,906 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 11:27:32,906 INFO L225 Difference]: With dead ends: 301 [2018-04-12 11:27:32,906 INFO L226 Difference]: Without dead ends: 301 [2018-04-12 11:27:32,907 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 385 GetRequests, 316 SyntacticMatches, 0 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 653 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=1823, Invalid=3147, Unknown=0, NotChecked=0, Total=4970 [2018-04-12 11:27:32,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2018-04-12 11:27:32,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 297. [2018-04-12 11:27:32,909 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 297 states. [2018-04-12 11:27:32,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 297 states to 297 states and 298 transitions. [2018-04-12 11:27:32,910 INFO L78 Accepts]: Start accepts. Automaton has 297 states and 298 transitions. Word has length 283 [2018-04-12 11:27:32,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 11:27:32,910 INFO L459 AbstractCegarLoop]: Abstraction has 297 states and 298 transitions. [2018-04-12 11:27:32,910 INFO L460 AbstractCegarLoop]: Interpolant automaton has 38 states. [2018-04-12 11:27:32,910 INFO L276 IsEmpty]: Start isEmpty. Operand 297 states and 298 transitions. [2018-04-12 11:27:32,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 292 [2018-04-12 11:27:32,912 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 11:27:32,912 INFO L355 BasicCegarLoop]: trace histogram [34, 34, 33, 33, 33, 33, 33, 33, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 11:27:32,912 INFO L408 AbstractCegarLoop]: === Iteration 34 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-12 11:27:32,912 INFO L82 PathProgramCache]: Analyzing trace with hash 858309942, now seen corresponding path program 24 times [2018-04-12 11:27:32,912 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 11:27:32,912 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 11:27:32,913 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:27:32,913 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 11:27:32,913 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:27:32,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:27:32,938 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 11:27:33,288 INFO L134 CoverageAnalysis]: Checked inductivity of 4356 backedges. 0 proven. 2178 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2018-04-12 11:27:33,288 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 11:27:33,288 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 11:27:33,295 INFO L103 rtionOrderModulation]: Keeping assertion order MIX_INSIDE_OUTSIDE [2018-04-12 11:30:20,943 INFO L242 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 34 check-sat command(s) [2018-04-12 11:30:20,943 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 11:30:21,004 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 11:30:21,491 INFO L134 CoverageAnalysis]: Checked inductivity of 4356 backedges. 0 proven. 2178 refuted. 0 times theorem prover too weak. 2178 trivial. 0 not checked. [2018-04-12 11:30:21,529 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 11:30:21,529 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [38, 37] total 72 [2018-04-12 11:30:21,530 INFO L442 AbstractCegarLoop]: Interpolant automaton has 72 states [2018-04-12 11:30:21,530 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 72 interpolants. [2018-04-12 11:30:21,530 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1891, Invalid=3221, Unknown=0, NotChecked=0, Total=5112 [2018-04-12 11:30:21,530 INFO L87 Difference]: Start difference. First operand 297 states and 298 transitions. Second operand 72 states. [2018-04-12 11:30:21,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 11:30:21,837 INFO L93 Difference]: Finished difference Result 309 states and 310 transitions. [2018-04-12 11:30:21,837 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2018-04-12 11:30:21,837 INFO L78 Accepts]: Start accepts. Automaton has 72 states. Word has length 291 [2018-04-12 11:30:21,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 11:30:21,838 INFO L225 Difference]: With dead ends: 309 [2018-04-12 11:30:21,838 INFO L226 Difference]: Without dead ends: 309 [2018-04-12 11:30:21,838 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 329 GetRequests, 257 SyntacticMatches, 1 SemanticMatches, 71 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2275 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=1962, Invalid=3294, Unknown=0, NotChecked=0, Total=5256 [2018-04-12 11:30:21,838 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2018-04-12 11:30:21,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 305. [2018-04-12 11:30:21,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2018-04-12 11:30:21,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 306 transitions. [2018-04-12 11:30:21,840 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 306 transitions. Word has length 291 [2018-04-12 11:30:21,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 11:30:21,840 INFO L459 AbstractCegarLoop]: Abstraction has 305 states and 306 transitions. [2018-04-12 11:30:21,840 INFO L460 AbstractCegarLoop]: Interpolant automaton has 72 states. [2018-04-12 11:30:21,841 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 306 transitions. [2018-04-12 11:30:21,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 300 [2018-04-12 11:30:21,841 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 11:30:21,841 INFO L355 BasicCegarLoop]: trace histogram [35, 35, 34, 34, 34, 34, 34, 34, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 11:30:21,841 INFO L408 AbstractCegarLoop]: === Iteration 35 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-12 11:30:21,842 INFO L82 PathProgramCache]: Analyzing trace with hash -206540778, now seen corresponding path program 25 times [2018-04-12 11:30:21,842 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 11:30:21,842 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 11:30:21,842 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:30:21,842 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 11:30:21,842 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:30:21,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:30:21,859 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 11:30:22,290 INFO L134 CoverageAnalysis]: Checked inductivity of 4624 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2018-04-12 11:30:22,290 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 11:30:22,291 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 31 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 11:30:22,297 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 11:30:22,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:30:22,358 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 11:30:22,785 INFO L134 CoverageAnalysis]: Checked inductivity of 4624 backedges. 0 proven. 2312 refuted. 0 times theorem prover too weak. 2312 trivial. 0 not checked. [2018-04-12 11:30:22,803 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 11:30:22,803 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [39, 38] total 74 [2018-04-12 11:30:22,803 INFO L442 AbstractCegarLoop]: Interpolant automaton has 74 states [2018-04-12 11:30:22,804 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 74 interpolants. [2018-04-12 11:30:22,804 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=1999, Invalid=3403, Unknown=0, NotChecked=0, Total=5402 [2018-04-12 11:30:22,804 INFO L87 Difference]: Start difference. First operand 305 states and 306 transitions. Second operand 74 states. [2018-04-12 11:30:23,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 11:30:23,077 INFO L93 Difference]: Finished difference Result 317 states and 318 transitions. [2018-04-12 11:30:23,077 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2018-04-12 11:30:23,077 INFO L78 Accepts]: Start accepts. Automaton has 74 states. Word has length 299 [2018-04-12 11:30:23,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 11:30:23,078 INFO L225 Difference]: With dead ends: 317 [2018-04-12 11:30:23,078 INFO L226 Difference]: Without dead ends: 317 [2018-04-12 11:30:23,078 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 338 GetRequests, 264 SyntacticMatches, 1 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2412 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=2072, Invalid=3478, Unknown=0, NotChecked=0, Total=5550 [2018-04-12 11:30:23,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2018-04-12 11:30:23,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 313. [2018-04-12 11:30:23,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 313 states. [2018-04-12 11:30:23,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 314 transitions. [2018-04-12 11:30:23,081 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 314 transitions. Word has length 299 [2018-04-12 11:30:23,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 11:30:23,081 INFO L459 AbstractCegarLoop]: Abstraction has 313 states and 314 transitions. [2018-04-12 11:30:23,081 INFO L460 AbstractCegarLoop]: Interpolant automaton has 74 states. [2018-04-12 11:30:23,081 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 314 transitions. [2018-04-12 11:30:23,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 308 [2018-04-12 11:30:23,082 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 11:30:23,082 INFO L355 BasicCegarLoop]: trace histogram [36, 36, 35, 35, 35, 35, 35, 35, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 11:30:23,082 INFO L408 AbstractCegarLoop]: === Iteration 36 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-12 11:30:23,082 INFO L82 PathProgramCache]: Analyzing trace with hash 929932278, now seen corresponding path program 26 times [2018-04-12 11:30:23,082 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 11:30:23,082 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 11:30:23,083 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:30:23,083 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-04-12 11:30:23,083 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:30:23,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:30:23,099 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 11:30:23,484 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2018-04-12 11:30:23,484 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 11:30:23,484 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 32 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 11:30:23,490 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST1 [2018-04-12 11:30:23,541 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2018-04-12 11:30:23,541 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 11:30:23,545 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 11:30:23,993 INFO L134 CoverageAnalysis]: Checked inductivity of 4900 backedges. 0 proven. 2450 refuted. 0 times theorem prover too weak. 2450 trivial. 0 not checked. [2018-04-12 11:30:24,011 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 11:30:24,011 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [40, 39] total 76 [2018-04-12 11:30:24,011 INFO L442 AbstractCegarLoop]: Interpolant automaton has 76 states [2018-04-12 11:30:24,011 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 76 interpolants. [2018-04-12 11:30:24,012 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2110, Invalid=3590, Unknown=0, NotChecked=0, Total=5700 [2018-04-12 11:30:24,012 INFO L87 Difference]: Start difference. First operand 313 states and 314 transitions. Second operand 76 states. [2018-04-12 11:30:24,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 11:30:24,334 INFO L93 Difference]: Finished difference Result 325 states and 326 transitions. [2018-04-12 11:30:24,334 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2018-04-12 11:30:24,334 INFO L78 Accepts]: Start accepts. Automaton has 76 states. Word has length 307 [2018-04-12 11:30:24,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 11:30:24,335 INFO L225 Difference]: With dead ends: 325 [2018-04-12 11:30:24,335 INFO L226 Difference]: Without dead ends: 325 [2018-04-12 11:30:24,335 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 347 GetRequests, 271 SyntacticMatches, 1 SemanticMatches, 75 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2553 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=2185, Invalid=3667, Unknown=0, NotChecked=0, Total=5852 [2018-04-12 11:30:24,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 325 states. [2018-04-12 11:30:24,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 325 to 321. [2018-04-12 11:30:24,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 321 states. [2018-04-12 11:30:24,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 321 states to 321 states and 322 transitions. [2018-04-12 11:30:24,337 INFO L78 Accepts]: Start accepts. Automaton has 321 states and 322 transitions. Word has length 307 [2018-04-12 11:30:24,338 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 11:30:24,338 INFO L459 AbstractCegarLoop]: Abstraction has 321 states and 322 transitions. [2018-04-12 11:30:24,338 INFO L460 AbstractCegarLoop]: Interpolant automaton has 76 states. [2018-04-12 11:30:24,338 INFO L276 IsEmpty]: Start isEmpty. Operand 321 states and 322 transitions. [2018-04-12 11:30:24,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 316 [2018-04-12 11:30:24,339 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 11:30:24,339 INFO L355 BasicCegarLoop]: trace histogram [37, 37, 36, 36, 36, 36, 36, 36, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 11:30:24,339 INFO L408 AbstractCegarLoop]: === Iteration 37 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-12 11:30:24,340 INFO L82 PathProgramCache]: Analyzing trace with hash -513089322, now seen corresponding path program 27 times [2018-04-12 11:30:24,340 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 11:30:24,340 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 11:30:24,340 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:30:24,340 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 11:30:24,340 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:30:24,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:30:24,368 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 11:30:24,792 INFO L134 CoverageAnalysis]: Checked inductivity of 5184 backedges. 0 proven. 2592 refuted. 0 times theorem prover too weak. 2592 trivial. 0 not checked. [2018-04-12 11:30:24,792 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 11:30:24,792 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 33 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 11:30:24,797 INFO L103 rtionOrderModulation]: Keeping assertion order OUTSIDE_LOOP_FIRST2 [2018-04-12 11:32:29,757 INFO L242 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 37 check-sat command(s) [2018-04-12 11:32:29,757 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 11:32:29,792 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 11:32:30,344 INFO L134 CoverageAnalysis]: Checked inductivity of 5184 backedges. 0 proven. 2592 refuted. 0 times theorem prover too weak. 2592 trivial. 0 not checked. [2018-04-12 11:32:30,377 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 11:32:30,378 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [41, 40] total 78 [2018-04-12 11:32:30,378 INFO L442 AbstractCegarLoop]: Interpolant automaton has 78 states [2018-04-12 11:32:30,378 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2018-04-12 11:32:30,378 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=2224, Invalid=3782, Unknown=0, NotChecked=0, Total=6006 [2018-04-12 11:32:30,379 INFO L87 Difference]: Start difference. First operand 321 states and 322 transitions. Second operand 78 states. [2018-04-12 11:32:30,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 11:32:30,662 INFO L93 Difference]: Finished difference Result 333 states and 334 transitions. [2018-04-12 11:32:30,662 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2018-04-12 11:32:30,662 INFO L78 Accepts]: Start accepts. Automaton has 78 states. Word has length 315 [2018-04-12 11:32:30,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 11:32:30,663 INFO L225 Difference]: With dead ends: 333 [2018-04-12 11:32:30,663 INFO L226 Difference]: Without dead ends: 333 [2018-04-12 11:32:30,663 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 356 GetRequests, 278 SyntacticMatches, 1 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2698 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=2301, Invalid=3861, Unknown=0, NotChecked=0, Total=6162 [2018-04-12 11:32:30,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2018-04-12 11:32:30,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 329. [2018-04-12 11:32:30,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2018-04-12 11:32:30,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 330 transitions. [2018-04-12 11:32:30,666 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 330 transitions. Word has length 315 [2018-04-12 11:32:30,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 11:32:30,666 INFO L459 AbstractCegarLoop]: Abstraction has 329 states and 330 transitions. [2018-04-12 11:32:30,666 INFO L460 AbstractCegarLoop]: Interpolant automaton has 78 states. [2018-04-12 11:32:30,666 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 330 transitions. [2018-04-12 11:32:30,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2018-04-12 11:32:30,667 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 11:32:30,668 INFO L355 BasicCegarLoop]: trace histogram [38, 38, 37, 37, 37, 37, 37, 37, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 11:32:30,668 INFO L408 AbstractCegarLoop]: === Iteration 38 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-12 11:32:30,668 INFO L82 PathProgramCache]: Analyzing trace with hash 1685235382, now seen corresponding path program 28 times [2018-04-12 11:32:30,668 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 11:32:30,668 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 11:32:30,668 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:32:30,668 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 11:32:30,668 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:32:30,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:32:30,687 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 11:32:31,083 INFO L134 CoverageAnalysis]: Checked inductivity of 5476 backedges. 0 proven. 2738 refuted. 0 times theorem prover too weak. 2738 trivial. 0 not checked. [2018-04-12 11:32:31,083 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 11:32:31,084 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 11:32:31,089 INFO L103 rtionOrderModulation]: Keeping assertion order TERMS_WITH_SMALL_CONSTANTS_FIRST [2018-04-12 11:32:31,135 INFO L242 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2018-04-12 11:32:31,135 INFO L243 tOrderPrioritization]: Conjunction of SSA is unsat [2018-04-12 11:32:31,139 INFO L270 TraceCheckSpWp]: Computing forward predicates... [2018-04-12 11:32:31,141 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2018-04-12 11:32:31,141 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-12 11:32:31,150 INFO L267 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2018-04-12 11:32:31,150 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:8, output treesize:7 [2018-04-12 11:32:33,116 INFO L477 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 10 [2018-04-12 11:32:33,116 INFO L267 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2018-04-12 11:32:33,120 INFO L267 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 1 dim-1 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2018-04-12 11:32:33,120 INFO L202 ElimStorePlain]: Needed 2 recursive calls to eliminate 4 variables, input treesize:24, output treesize:17 [2018-04-12 11:32:33,314 INFO L134 CoverageAnalysis]: Checked inductivity of 5476 backedges. 2628 proven. 2848 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-04-12 11:32:33,331 INFO L320 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-04-12 11:32:33,331 INFO L335 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [42, 82] total 122 [2018-04-12 11:32:33,332 INFO L442 AbstractCegarLoop]: Interpolant automaton has 122 states [2018-04-12 11:32:33,332 INFO L132 InterpolantAutomaton]: Constructing interpolant automaton starting with 122 interpolants. [2018-04-12 11:32:33,332 INFO L133 InterpolantAutomaton]: CoverageRelationStatistics Valid=3208, Invalid=11554, Unknown=0, NotChecked=0, Total=14762 [2018-04-12 11:32:33,332 INFO L87 Difference]: Start difference. First operand 329 states and 330 transitions. Second operand 122 states. [2018-04-12 11:32:34,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-04-12 11:32:34,500 INFO L93 Difference]: Finished difference Result 341 states and 342 transitions. [2018-04-12 11:32:34,500 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 45 states. [2018-04-12 11:32:34,500 INFO L78 Accepts]: Start accepts. Automaton has 122 states. Word has length 323 [2018-04-12 11:32:34,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2018-04-12 11:32:34,501 INFO L225 Difference]: With dead ends: 341 [2018-04-12 11:32:34,501 INFO L226 Difference]: Without dead ends: 341 [2018-04-12 11:32:34,502 INFO L567 BasicCegarLoop]: 0 DeclaredPredicates, 408 GetRequests, 245 SyntacticMatches, 0 SemanticMatches, 163 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10909 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=5608, Invalid=21452, Unknown=0, NotChecked=0, Total=27060 [2018-04-12 11:32:34,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 341 states. [2018-04-12 11:32:34,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 341 to 337. [2018-04-12 11:32:34,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 337 states. [2018-04-12 11:32:34,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 338 transitions. [2018-04-12 11:32:34,506 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 338 transitions. Word has length 323 [2018-04-12 11:32:34,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2018-04-12 11:32:34,506 INFO L459 AbstractCegarLoop]: Abstraction has 337 states and 338 transitions. [2018-04-12 11:32:34,506 INFO L460 AbstractCegarLoop]: Interpolant automaton has 122 states. [2018-04-12 11:32:34,506 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 338 transitions. [2018-04-12 11:32:34,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 332 [2018-04-12 11:32:34,508 INFO L347 BasicCegarLoop]: Found error trace [2018-04-12 11:32:34,508 INFO L355 BasicCegarLoop]: trace histogram [39, 39, 38, 38, 38, 38, 38, 38, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-04-12 11:32:34,508 INFO L408 AbstractCegarLoop]: === Iteration 39 === [__U_MULTI_f_________false_valid_free_i__fooErr1RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr3RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr2RequiresViolation, __U_MULTI_f_________false_valid_free_i__fooErr0RequiresViolation, mainErr1RequiresViolation, mainErr6AssertViolationMEMORY_FREE, mainErr4AssertViolationMEMORY_FREE, mainErr10AssertViolationMEMORY_FREE, mainErr11AssertViolationMEMORY_FREE, mainErr0RequiresViolation, mainErr12EnsuresViolationMEMORY_LEAK, mainErr3RequiresViolation, mainErr7AssertViolationMEMORY_FREE, mainErr9AssertViolationMEMORY_FREE, mainErr2RequiresViolation, mainErr8AssertViolationMEMORY_FREE, mainErr5AssertViolationMEMORY_FREE]=== [2018-04-12 11:32:34,508 INFO L82 PathProgramCache]: Analyzing trace with hash -485526122, now seen corresponding path program 29 times [2018-04-12 11:32:34,508 INFO L213 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-04-12 11:32:34,508 INFO L68 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-04-12 11:32:34,509 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:32:34,509 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-04-12 11:32:34,509 INFO L119 rtionOrderModulation]: Craig nested/tree interpolation forces the following order [2018-04-12 11:32:34,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-04-12 11:32:34,532 WARN L250 erpolLogProxyWrapper]: Using partial proofs (cut at CNF-level). Set option :produce-proofs to true to get complete proofs. [2018-04-12 11:32:34,947 INFO L134 CoverageAnalysis]: Checked inductivity of 5776 backedges. 0 proven. 2888 refuted. 0 times theorem prover too weak. 2888 trivial. 0 not checked. [2018-04-12 11:32:34,947 INFO L308 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-04-12 11:32:34,947 INFO L213 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /home/ultimate/work/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 35 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-04-12 11:32:34,952 INFO L103 rtionOrderModulation]: Keeping assertion order INSIDE_LOOP_FIRST1 Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown