java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-simple/sll2c_append_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:02:36,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:02:36,174 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:02:36,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:02:36,186 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:02:36,187 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:02:36,188 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:02:36,190 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:02:36,192 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:02:36,193 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:02:36,194 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:02:36,195 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:02:36,195 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:02:36,196 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:02:36,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:02:36,198 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:02:36,199 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:02:36,200 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:02:36,202 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:02:36,204 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:02:36,205 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:02:36,206 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:02:36,207 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:02:36,208 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:02:36,210 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:02:36,211 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:02:36,211 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:02:36,212 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:02:36,212 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:02:36,213 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:02:36,214 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:02:36,214 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:02:36,215 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:02:36,216 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:02:36,217 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:02:36,217 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:02:36,218 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:02:36,218 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:02:36,218 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:02:36,219 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:02:36,220 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:02:36,220 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-20 13:02:36,235 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:02:36,235 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:02:36,236 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-20 13:02:36,236 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-20 13:02:36,236 INFO L138 SettingsManager]: * Use SBE=true [2019-09-20 13:02:36,237 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:02:36,237 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:02:36,237 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-20 13:02:36,237 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:02:36,237 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:02:36,237 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:02:36,238 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:02:36,238 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:02:36,238 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:02:36,238 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:02:36,238 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-20 13:02:36,239 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:02:36,239 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:02:36,239 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:02:36,239 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-20 13:02:36,240 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-20 13:02:36,240 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:02:36,240 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:02:36,240 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:02:36,240 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-20 13:02:36,241 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-20 13:02:36,241 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:02:36,241 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-20 13:02:36,241 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:02:36,269 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:02:36,281 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:02:36,285 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:02:36,286 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:02:36,287 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:02:36,287 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2c_append_unequal.i [2019-09-20 13:02:36,363 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f68db3df7/36e51782703d4a1a9e208028258ecb18/FLAGcfc9cfd7f [2019-09-20 13:02:36,918 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:02:36,919 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2c_append_unequal.i [2019-09-20 13:02:36,944 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f68db3df7/36e51782703d4a1a9e208028258ecb18/FLAGcfc9cfd7f [2019-09-20 13:02:37,159 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f68db3df7/36e51782703d4a1a9e208028258ecb18 [2019-09-20 13:02:37,167 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:02:37,168 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:02:37,169 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:02:37,170 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:02:37,173 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:02:37,174 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:02:37" (1/1) ... [2019-09-20 13:02:37,177 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@32400a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:37, skipping insertion in model container [2019-09-20 13:02:37,177 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:02:37" (1/1) ... [2019-09-20 13:02:37,184 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:02:37,236 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:02:37,675 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:02:37,685 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:02:37,752 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:02:37,816 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:02:37,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:37 WrapperNode [2019-09-20 13:02:37,817 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:02:37,818 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:02:37,818 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:02:37,818 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:02:37,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:37" (1/1) ... [2019-09-20 13:02:37,831 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:37" (1/1) ... [2019-09-20 13:02:37,847 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:37" (1/1) ... [2019-09-20 13:02:37,848 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:37" (1/1) ... [2019-09-20 13:02:37,877 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:37" (1/1) ... [2019-09-20 13:02:37,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:37" (1/1) ... [2019-09-20 13:02:37,886 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:37" (1/1) ... [2019-09-20 13:02:37,893 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:02:37,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:02:37,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:02:37,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:02:37,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:37" (1/1) ... No working directory specified, using /storage/repos/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 [2019-09-20 13:02:37,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:02:37,948 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:02:37,948 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-09-20 13:02:37,949 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-09-20 13:02:37,949 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-09-20 13:02:37,949 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-09-20 13:02:37,949 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_create [2019-09-20 13:02:37,949 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_destroy [2019-09-20 13:02:37,949 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_circular_append [2019-09-20 13:02:37,950 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:02:37,950 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:02:37,950 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-09-20 13:02:37,950 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-09-20 13:02:37,950 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-20 13:02:37,951 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-20 13:02:37,951 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-20 13:02:37,951 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-20 13:02:37,951 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-20 13:02:37,951 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-20 13:02:37,952 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-20 13:02:37,952 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-20 13:02:37,952 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-20 13:02:37,952 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-20 13:02:37,952 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-20 13:02:37,952 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-20 13:02:37,953 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-20 13:02:37,953 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-20 13:02:37,953 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-20 13:02:37,953 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-20 13:02:37,953 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-20 13:02:37,953 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-20 13:02:37,953 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-20 13:02:37,954 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-20 13:02:37,954 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-20 13:02:37,954 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-20 13:02:37,954 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-20 13:02:37,954 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-20 13:02:37,955 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-20 13:02:37,955 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-20 13:02:37,955 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-20 13:02:37,955 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-20 13:02:37,955 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-20 13:02:37,955 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-20 13:02:37,956 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-20 13:02:37,956 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-20 13:02:37,956 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-20 13:02:37,956 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-20 13:02:37,956 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-20 13:02:37,956 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-20 13:02:37,956 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-20 13:02:37,957 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-20 13:02:37,957 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-20 13:02:37,957 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-20 13:02:37,957 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-20 13:02:37,957 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-20 13:02:37,957 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-20 13:02:37,958 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-20 13:02:37,958 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-20 13:02:37,958 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-20 13:02:37,958 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-20 13:02:37,958 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-20 13:02:37,958 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-20 13:02:37,959 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-20 13:02:37,959 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:02:37,959 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-20 13:02:37,959 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-20 13:02:37,959 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:02:37,959 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-09-20 13:02:37,960 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-20 13:02:37,960 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-20 13:02:37,960 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-20 13:02:37,960 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-09-20 13:02:37,960 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-20 13:02:37,960 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-20 13:02:37,960 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-09-20 13:02:37,961 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-20 13:02:37,961 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-20 13:02:37,961 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-09-20 13:02:37,961 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-20 13:02:37,961 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-20 13:02:37,961 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-20 13:02:37,961 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-20 13:02:37,962 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-20 13:02:37,962 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-20 13:02:37,962 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-20 13:02:37,962 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-20 13:02:37,962 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-20 13:02:37,962 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-20 13:02:37,963 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-20 13:02:37,963 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-20 13:02:37,963 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-20 13:02:37,963 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-20 13:02:37,963 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-20 13:02:37,963 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-20 13:02:37,963 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-20 13:02:37,964 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-20 13:02:37,964 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-20 13:02:37,964 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-20 13:02:37,964 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-20 13:02:37,964 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-20 13:02:37,964 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-20 13:02:37,965 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-20 13:02:37,965 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-20 13:02:37,965 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-20 13:02:37,965 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-20 13:02:37,965 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-20 13:02:37,965 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-20 13:02:37,965 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-20 13:02:37,966 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-20 13:02:37,966 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-20 13:02:37,966 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-20 13:02:37,966 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-20 13:02:37,966 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-20 13:02:37,966 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-20 13:02:37,966 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-20 13:02:37,967 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-20 13:02:37,967 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-09-20 13:02:37,967 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-09-20 13:02:37,967 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:02:37,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:02:37,967 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:02:37,967 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_create [2019-09-20 13:02:37,968 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_destroy [2019-09-20 13:02:37,968 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:02:37,968 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:02:37,968 INFO L130 BoogieDeclarations]: Found specification of procedure sll_circular_append [2019-09-20 13:02:37,968 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:02:37,968 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:02:37,969 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-09-20 13:02:37,969 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:02:37,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:02:37,969 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:02:38,304 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-09-20 13:02:38,559 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:02:38,559 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:02:38,561 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:02:38 BoogieIcfgContainer [2019-09-20 13:02:38,561 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:02:38,562 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:02:38,562 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:02:38,565 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:02:38,566 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:02:37" (1/3) ... [2019-09-20 13:02:38,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38b5923d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:02:38, skipping insertion in model container [2019-09-20 13:02:38,567 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:02:37" (2/3) ... [2019-09-20 13:02:38,567 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38b5923d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:02:38, skipping insertion in model container [2019-09-20 13:02:38,568 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:02:38" (3/3) ... [2019-09-20 13:02:38,569 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2c_append_unequal.i [2019-09-20 13:02:38,579 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:02:38,587 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:02:38,603 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:02:38,630 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-20 13:02:38,632 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:02:38,632 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-20 13:02:38,632 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:02:38,632 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:02:38,632 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:02:38,633 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:02:38,633 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:02:38,633 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:02:38,648 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2019-09-20 13:02:38,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-09-20 13:02:38,655 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:02:38,656 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:02:38,657 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:02:38,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:02:38,662 INFO L82 PathProgramCache]: Analyzing trace with hash -1121781111, now seen corresponding path program 1 times [2019-09-20 13:02:38,664 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:02:38,664 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:02:38,729 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:02:38,729 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:02:38,730 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:02:38,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:02:38,883 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-20 13:02:38,886 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:02:38,886 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:02:38,892 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:02:38,903 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:02:38,904 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:02:38,906 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 2 states. [2019-09-20 13:02:38,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:02:38,933 INFO L93 Difference]: Finished difference Result 103 states and 135 transitions. [2019-09-20 13:02:38,933 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:02:38,934 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 37 [2019-09-20 13:02:38,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:02:38,943 INFO L225 Difference]: With dead ends: 103 [2019-09-20 13:02:38,944 INFO L226 Difference]: Without dead ends: 43 [2019-09-20 13:02:38,948 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:02:38,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-09-20 13:02:38,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2019-09-20 13:02:38,991 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-09-20 13:02:38,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 51 transitions. [2019-09-20 13:02:38,995 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 51 transitions. Word has length 37 [2019-09-20 13:02:38,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:02:38,997 INFO L475 AbstractCegarLoop]: Abstraction has 43 states and 51 transitions. [2019-09-20 13:02:38,997 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:02:38,997 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 51 transitions. [2019-09-20 13:02:38,999 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-09-20 13:02:38,999 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:02:39,000 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:02:39,000 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:02:39,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:02:39,000 INFO L82 PathProgramCache]: Analyzing trace with hash 699165091, now seen corresponding path program 1 times [2019-09-20 13:02:39,001 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:02:39,001 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:02:39,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:02:39,006 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:02:39,006 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:02:39,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:02:39,215 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-09-20 13:02:39,215 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:02:39,216 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-20 13:02:39,219 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-20 13:02:39,220 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-20 13:02:39,220 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-20 13:02:39,221 INFO L87 Difference]: Start difference. First operand 43 states and 51 transitions. Second operand 5 states. [2019-09-20 13:02:39,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:02:39,300 INFO L93 Difference]: Finished difference Result 76 states and 91 transitions. [2019-09-20 13:02:39,302 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-20 13:02:39,302 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 38 [2019-09-20 13:02:39,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:02:39,304 INFO L225 Difference]: With dead ends: 76 [2019-09-20 13:02:39,304 INFO L226 Difference]: Without dead ends: 46 [2019-09-20 13:02:39,305 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:02:39,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-09-20 13:02:39,320 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2019-09-20 13:02:39,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-09-20 13:02:39,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 52 transitions. [2019-09-20 13:02:39,323 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 52 transitions. Word has length 38 [2019-09-20 13:02:39,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:02:39,324 INFO L475 AbstractCegarLoop]: Abstraction has 44 states and 52 transitions. [2019-09-20 13:02:39,326 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-20 13:02:39,326 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 52 transitions. [2019-09-20 13:02:39,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2019-09-20 13:02:39,329 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:02:39,329 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:02:39,329 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:02:39,329 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:02:39,330 INFO L82 PathProgramCache]: Analyzing trace with hash 983235931, now seen corresponding path program 1 times [2019-09-20 13:02:39,330 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:02:39,330 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:02:39,338 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:02:39,338 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:02:39,339 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:02:39,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:02:39,853 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:02:39,853 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:02:39,853 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2019-09-20 13:02:39,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:02:40,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:02:40,028 INFO L256 TraceCheckSpWp]: Trace formula consists of 288 conjuncts, 45 conjunts are in the unsatisfiable core [2019-09-20 13:02:40,045 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:02:40,269 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2019-09-20 13:02:40,270 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:02:40,277 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:02:40,277 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:02:40,278 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:3 [2019-09-20 13:02:41,476 WARN L191 SmtUtils]: Spent 1.13 s on a formula simplification that was a NOOP. DAG size: 20 [2019-09-20 13:02:42,961 WARN L191 SmtUtils]: Spent 1.38 s on a formula simplification that was a NOOP. DAG size: 26 [2019-09-20 13:02:42,976 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-20 13:02:42,987 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:02:42,988 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-09-20 13:02:42,988 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:35, output treesize:26 [2019-09-20 13:02:51,449 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:02:51,454 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:02:51,454 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17] total 24 [2019-09-20 13:02:51,455 INFO L454 AbstractCegarLoop]: Interpolant automaton has 24 states [2019-09-20 13:02:51,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2019-09-20 13:02:51,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=484, Unknown=2, NotChecked=0, Total=552 [2019-09-20 13:02:51,456 INFO L87 Difference]: Start difference. First operand 44 states and 52 transitions. Second operand 24 states. [2019-09-20 13:02:52,934 WARN L191 SmtUtils]: Spent 1.23 s on a formula simplification that was a NOOP. DAG size: 25 [2019-09-20 13:03:01,469 WARN L191 SmtUtils]: Spent 4.06 s on a formula simplification. DAG size of input: 43 DAG size of output: 39 [2019-09-20 13:03:03,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:03:03,856 INFO L93 Difference]: Finished difference Result 59 states and 71 transitions. [2019-09-20 13:03:03,861 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2019-09-20 13:03:03,862 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 46 [2019-09-20 13:03:03,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:03:03,863 INFO L225 Difference]: With dead ends: 59 [2019-09-20 13:03:03,863 INFO L226 Difference]: Without dead ends: 46 [2019-09-20 13:03:03,864 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 70 GetRequests, 40 SyntacticMatches, 1 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 17.0s TimeCoverageRelationStatistics Valid=105, Invalid=823, Unknown=2, NotChecked=0, Total=930 [2019-09-20 13:03:03,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-09-20 13:03:03,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2019-09-20 13:03:03,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-09-20 13:03:03,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2019-09-20 13:03:03,872 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 46 [2019-09-20 13:03:03,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:03:03,873 INFO L475 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2019-09-20 13:03:03,873 INFO L476 AbstractCegarLoop]: Interpolant automaton has 24 states. [2019-09-20 13:03:03,873 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2019-09-20 13:03:03,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2019-09-20 13:03:03,875 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:03:03,875 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:03:03,875 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:03:03,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:03:03,875 INFO L82 PathProgramCache]: Analyzing trace with hash 2011910278, now seen corresponding path program 1 times [2019-09-20 13:03:03,876 INFO L224 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-20 13:03:03,876 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-20 13:03:03,879 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:03:03,879 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:03:03,880 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:03:03,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:03:04,903 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:03:04,903 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:03:04,903 INFO L224 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /storage/repos/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 [2019-09-20 13:03:04,987 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:03:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:03:05,054 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 124 conjunts are in the unsatisfiable core [2019-09-20 13:03:05,060 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-09-20 13:03:05,102 INFO L375 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 [2019-09-20 13:03:05,103 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:03:05,105 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:05,105 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:03:05,106 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-09-20 13:03:05,204 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:05,205 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2019-09-20 13:03:05,206 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:03:05,212 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:05,213 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:03:05,213 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:20, output treesize:14 [2019-09-20 13:03:05,257 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 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 11 treesize of output 7 [2019-09-20 13:03:05,257 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:03:05,265 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:05,265 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:03:05,265 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:22, output treesize:18 [2019-09-20 13:03:05,334 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:05,334 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 46 [2019-09-20 13:03:05,336 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-09-20 13:03:05,337 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:03:05,339 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 2 xjuncts. [2019-09-20 13:03:05,370 INFO L567 ElimStorePlain]: treesize reduction 25, result has 51.9 percent of original size [2019-09-20 13:03:05,370 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-20 13:03:05,371 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:34, output treesize:26 [2019-09-20 13:03:05,606 INFO L392 ElimStorePlain]: Different costs {0=[|v_#memory_$Pointer$.offset_BEFORE_CALL_1|], 5=[|v_#memory_$Pointer$.base_BEFORE_CALL_5|]} [2019-09-20 13:03:05,610 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2019-09-20 13:03:05,610 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-09-20 13:03:05,636 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:05,658 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:05,659 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 43 treesize of output 49 [2019-09-20 13:03:05,660 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:03:05,661 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:03:05,662 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:03:05,663 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-09-20 13:03:05,663 INFO L496 ElimStorePlain]: Start of recursive call 3: 2 dim-0 vars, End of recursive call: 2 dim-0 vars, and 1 xjuncts. [2019-09-20 13:03:05,681 INFO L567 ElimStorePlain]: treesize reduction 20, result has 45.9 percent of original size [2019-09-20 13:03:05,681 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-09-20 13:03:05,682 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 4 variables, input treesize:59, output treesize:7 [2019-09-20 13:03:06,485 INFO L392 ElimStorePlain]: Different costs {17=[|v_#memory_$Pointer$.offset_39|], 27=[|v_#memory_$Pointer$.base_42|]} [2019-09-20 13:03:06,489 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-20 13:03:06,529 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:06,535 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-09-20 13:03:06,574 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-09-20 13:03:06,574 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: 3 dim-0 vars, and 1 xjuncts. [2019-09-20 13:03:06,575 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:215, output treesize:553 [2019-09-20 13:03:21,040 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 14 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-20 13:03:21,052 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-09-20 13:03:21,054 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 26] total 43 [2019-09-20 13:03:21,056 INFO L454 AbstractCegarLoop]: Interpolant automaton has 43 states [2019-09-20 13:03:21,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2019-09-20 13:03:21,059 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=1683, Unknown=7, NotChecked=0, Total=1806 [2019-09-20 13:03:21,059 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 43 states.