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/sll2n_insert_equal.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-14 23:12:58,944 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-14 23:12:58,947 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-14 23:12:58,964 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-14 23:12:58,965 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-14 23:12:58,966 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-14 23:12:58,968 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-14 23:12:58,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-14 23:12:58,980 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-14 23:12:58,983 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-14 23:12:58,985 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-14 23:12:58,986 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-14 23:12:58,987 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-14 23:12:58,988 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-14 23:12:58,990 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-14 23:12:58,992 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-14 23:12:58,993 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-14 23:12:58,994 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-14 23:12:58,995 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-14 23:12:59,000 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-14 23:12:59,004 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-14 23:12:59,007 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-14 23:12:59,010 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-14 23:12:59,010 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-14 23:12:59,012 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-14 23:12:59,013 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-14 23:12:59,013 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-14 23:12:59,014 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-14 23:12:59,016 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-14 23:12:59,017 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-14 23:12:59,017 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-14 23:12:59,019 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-14 23:12:59,019 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-14 23:12:59,020 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-14 23:12:59,021 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-14 23:12:59,022 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-14 23:12:59,022 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-14 23:12:59,022 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-14 23:12:59,023 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-14 23:12:59,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-14 23:12:59,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-14 23:12:59,025 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 [2019-10-14 23:12:59,045 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-14 23:12:59,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-14 23:12:59,046 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-14 23:12:59,047 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-14 23:12:59,047 INFO L138 SettingsManager]: * Use SBE=true [2019-10-14 23:12:59,047 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-14 23:12:59,047 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-14 23:12:59,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-14 23:12:59,048 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-14 23:12:59,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-14 23:12:59,048 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-14 23:12:59,048 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-14 23:12:59,048 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-14 23:12:59,048 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-14 23:12:59,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-14 23:12:59,049 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-14 23:12:59,049 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-14 23:12:59,049 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-14 23:12:59,049 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-14 23:12:59,050 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-14 23:12:59,050 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-14 23:12:59,050 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-14 23:12:59,050 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-14 23:12:59,050 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-14 23:12:59,051 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-14 23:12:59,051 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-14 23:12:59,051 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-14 23:12:59,051 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-14 23:12:59,051 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-14 23:12:59,297 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-14 23:12:59,314 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-14 23:12:59,317 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-14 23:12:59,319 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-14 23:12:59,319 INFO L275 PluginConnector]: CDTParser initialized [2019-10-14 23:12:59,320 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_insert_equal.i [2019-10-14 23:12:59,393 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76c5a34db/cd3cded1ead24310872b5820bb6c9c1e/FLAGe1c07cd57 [2019-10-14 23:12:59,924 INFO L306 CDTParser]: Found 1 translation units. [2019-10-14 23:12:59,925 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2n_insert_equal.i [2019-10-14 23:12:59,943 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76c5a34db/cd3cded1ead24310872b5820bb6c9c1e/FLAGe1c07cd57 [2019-10-14 23:13:00,210 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/76c5a34db/cd3cded1ead24310872b5820bb6c9c1e [2019-10-14 23:13:00,218 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-14 23:13:00,219 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-14 23:13:00,222 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-14 23:13:00,222 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-14 23:13:00,225 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-14 23:13:00,226 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:13:00" (1/1) ... [2019-10-14 23:13:00,228 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7838a7c0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:13:00, skipping insertion in model container [2019-10-14 23:13:00,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:13:00" (1/1) ... [2019-10-14 23:13:00,234 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-14 23:13:00,276 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-14 23:13:00,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:13:00,751 INFO L188 MainTranslator]: Completed pre-run [2019-10-14 23:13:00,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-14 23:13:00,872 INFO L192 MainTranslator]: Completed translation [2019-10-14 23:13:00,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:13:00 WrapperNode [2019-10-14 23:13:00,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-14 23:13:00,874 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-14 23:13:00,874 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-14 23:13:00,874 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-14 23:13:00,887 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:13:00" (1/1) ... [2019-10-14 23:13:00,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:13:00" (1/1) ... [2019-10-14 23:13:00,911 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:13:00" (1/1) ... [2019-10-14 23:13:00,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:13:00" (1/1) ... [2019-10-14 23:13:00,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:13:00" (1/1) ... [2019-10-14 23:13:00,939 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:13:00" (1/1) ... [2019-10-14 23:13:00,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:13:00" (1/1) ... [2019-10-14 23:13:00,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-14 23:13:00,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-14 23:13:00,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-14 23:13:00,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-14 23:13:00,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:13:00" (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 [2019-10-14 23:13:00,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-14 23:13:00,998 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-14 23:13:00,998 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-14 23:13:00,998 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-14 23:13:00,998 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-14 23:13:00,999 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-10-14 23:13:00,999 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-10-14 23:13:00,999 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2019-10-14 23:13:00,999 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2019-10-14 23:13:00,999 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-14 23:13:01,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-14 23:13:01,000 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-14 23:13:01,000 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-14 23:13:01,000 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-14 23:13:01,000 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-14 23:13:01,000 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-14 23:13:01,001 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-14 23:13:01,001 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-14 23:13:01,001 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-14 23:13:01,001 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-14 23:13:01,001 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-14 23:13:01,002 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-14 23:13:01,002 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-14 23:13:01,002 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-14 23:13:01,002 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-14 23:13:01,002 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-14 23:13:01,002 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-14 23:13:01,003 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-14 23:13:01,003 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-14 23:13:01,003 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-14 23:13:01,003 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-14 23:13:01,003 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-14 23:13:01,003 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-14 23:13:01,004 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-14 23:13:01,004 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-14 23:13:01,004 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-14 23:13:01,004 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-14 23:13:01,004 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-14 23:13:01,004 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-14 23:13:01,004 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-14 23:13:01,005 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-14 23:13:01,005 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-14 23:13:01,005 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-14 23:13:01,005 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-14 23:13:01,005 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-14 23:13:01,005 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-14 23:13:01,005 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-14 23:13:01,005 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-14 23:13:01,005 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-14 23:13:01,006 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-14 23:13:01,006 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-14 23:13:01,006 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-14 23:13:01,006 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-14 23:13:01,006 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-14 23:13:01,006 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-14 23:13:01,007 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-14 23:13:01,007 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-14 23:13:01,007 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-14 23:13:01,007 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-14 23:13:01,007 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-14 23:13:01,007 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-14 23:13:01,007 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-14 23:13:01,008 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-14 23:13:01,008 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-14 23:13:01,008 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-14 23:13:01,008 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-14 23:13:01,008 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-14 23:13:01,008 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-14 23:13:01,009 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-14 23:13:01,009 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-14 23:13:01,009 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-14 23:13:01,009 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-14 23:13:01,009 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-14 23:13:01,009 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-14 23:13:01,010 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-14 23:13:01,010 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-14 23:13:01,010 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-14 23:13:01,010 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-14 23:13:01,010 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-14 23:13:01,010 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-14 23:13:01,011 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-14 23:13:01,011 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-14 23:13:01,011 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-14 23:13:01,011 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-14 23:13:01,011 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-14 23:13:01,012 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-14 23:13:01,012 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-14 23:13:01,012 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-14 23:13:01,012 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-14 23:13:01,012 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-14 23:13:01,012 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-14 23:13:01,013 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-14 23:13:01,013 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-14 23:13:01,013 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-14 23:13:01,013 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-14 23:13:01,013 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-14 23:13:01,013 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-14 23:13:01,014 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-14 23:13:01,014 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-14 23:13:01,014 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-14 23:13:01,014 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-14 23:13:01,014 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-14 23:13:01,014 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-14 23:13:01,014 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-14 23:13:01,015 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-14 23:13:01,015 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-14 23:13:01,015 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-14 23:13:01,015 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-14 23:13:01,015 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-14 23:13:01,015 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-14 23:13:01,016 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-14 23:13:01,016 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-14 23:13:01,016 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-14 23:13:01,016 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-14 23:13:01,016 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-14 23:13:01,016 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-14 23:13:01,016 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-14 23:13:01,017 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-10-14 23:13:01,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-14 23:13:01,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-14 23:13:01,017 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-14 23:13:01,017 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-10-14 23:13:01,017 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2019-10-14 23:13:01,017 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-14 23:13:01,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-14 23:13:01,018 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2019-10-14 23:13:01,018 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-14 23:13:01,018 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-14 23:13:01,018 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-14 23:13:01,018 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-14 23:13:01,018 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-14 23:13:01,019 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-14 23:13:01,378 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-14 23:13:01,595 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-14 23:13:01,595 INFO L284 CfgBuilder]: Removed 4 assume(true) statements. [2019-10-14 23:13:01,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:13:01 BoogieIcfgContainer [2019-10-14 23:13:01,599 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-14 23:13:01,600 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-14 23:13:01,601 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-14 23:13:01,604 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-14 23:13:01,605 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:13:00" (1/3) ... [2019-10-14 23:13:01,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cb9d30d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:13:01, skipping insertion in model container [2019-10-14 23:13:01,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:13:00" (2/3) ... [2019-10-14 23:13:01,607 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cb9d30d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:13:01, skipping insertion in model container [2019-10-14 23:13:01,607 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:13:01" (3/3) ... [2019-10-14 23:13:01,610 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_insert_equal.i [2019-10-14 23:13:01,620 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-14 23:13:01,628 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-14 23:13:01,640 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-14 23:13:01,672 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-14 23:13:01,672 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-14 23:13:01,672 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-14 23:13:01,672 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-14 23:13:01,673 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-14 23:13:01,673 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-14 23:13:01,673 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-14 23:13:01,673 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-14 23:13:01,694 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2019-10-14 23:13:01,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-14 23:13:01,702 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:13:01,704 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:13:01,708 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:13:01,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:13:01,713 INFO L82 PathProgramCache]: Analyzing trace with hash 1950085846, now seen corresponding path program 1 times [2019-10-14 23:13:01,722 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:13:01,722 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31598086] [2019-10-14 23:13:01,722 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:13:01,723 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:13:01,723 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:13:01,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:01,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:01,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:02,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:02,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:02,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:13:02,046 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31598086] [2019-10-14 23:13:02,047 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:13:02,047 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-14 23:13:02,047 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907836165] [2019-10-14 23:13:02,052 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-14 23:13:02,052 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:13:02,066 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-14 23:13:02,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-14 23:13:02,069 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 4 states. [2019-10-14 23:13:02,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:13:02,304 INFO L93 Difference]: Finished difference Result 94 states and 122 transitions. [2019-10-14 23:13:02,304 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-14 23:13:02,305 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2019-10-14 23:13:02,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:13:02,322 INFO L225 Difference]: With dead ends: 94 [2019-10-14 23:13:02,322 INFO L226 Difference]: Without dead ends: 41 [2019-10-14 23:13:02,328 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:13:02,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-10-14 23:13:02,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2019-10-14 23:13:02,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-10-14 23:13:02,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2019-10-14 23:13:02,387 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 31 [2019-10-14 23:13:02,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:13:02,388 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2019-10-14 23:13:02,388 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-14 23:13:02,388 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2019-10-14 23:13:02,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-14 23:13:02,393 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:13:02,394 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:13:02,394 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:13:02,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:13:02,395 INFO L82 PathProgramCache]: Analyzing trace with hash -778212150, now seen corresponding path program 1 times [2019-10-14 23:13:02,395 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:13:02,395 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018480583] [2019-10-14 23:13:02,395 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:13:02,395 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:13:02,396 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:13:02,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:02,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:02,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:02,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:02,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:02,584 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:13:02,584 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018480583] [2019-10-14 23:13:02,584 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:13:02,585 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-14 23:13:02,585 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612700772] [2019-10-14 23:13:02,586 INFO L442 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-14 23:13:02,587 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:13:02,587 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-14 23:13:02,587 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-14 23:13:02,587 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 5 states. [2019-10-14 23:13:02,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:13:02,727 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2019-10-14 23:13:02,727 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-14 23:13:02,727 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 31 [2019-10-14 23:13:02,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:13:02,729 INFO L225 Difference]: With dead ends: 55 [2019-10-14 23:13:02,729 INFO L226 Difference]: Without dead ends: 46 [2019-10-14 23:13:02,730 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-14 23:13:02,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-10-14 23:13:02,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 38. [2019-10-14 23:13:02,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-10-14 23:13:02,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2019-10-14 23:13:02,739 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 31 [2019-10-14 23:13:02,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:13:02,740 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2019-10-14 23:13:02,740 INFO L463 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-14 23:13:02,740 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2019-10-14 23:13:02,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-14 23:13:02,741 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:13:02,741 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:13:02,742 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:13:02,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:13:02,742 INFO L82 PathProgramCache]: Analyzing trace with hash -1587558776, now seen corresponding path program 1 times [2019-10-14 23:13:02,742 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:13:02,743 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2018945938] [2019-10-14 23:13:02,743 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:13:02,743 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:13:02,743 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:13:02,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:02,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:02,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:02,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:02,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:02,998 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-14 23:13:02,998 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2018945938] [2019-10-14 23:13:02,999 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-14 23:13:02,999 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-14 23:13:02,999 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1599285414] [2019-10-14 23:13:03,000 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-14 23:13:03,001 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:13:03,002 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-14 23:13:03,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2019-10-14 23:13:03,004 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 10 states. [2019-10-14 23:13:03,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:13:03,292 INFO L93 Difference]: Finished difference Result 71 states and 83 transitions. [2019-10-14 23:13:03,295 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-14 23:13:03,295 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 31 [2019-10-14 23:13:03,296 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:13:03,297 INFO L225 Difference]: With dead ends: 71 [2019-10-14 23:13:03,297 INFO L226 Difference]: Without dead ends: 41 [2019-10-14 23:13:03,298 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2019-10-14 23:13:03,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2019-10-14 23:13:03,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2019-10-14 23:13:03,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-10-14 23:13:03,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2019-10-14 23:13:03,310 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 31 [2019-10-14 23:13:03,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:13:03,311 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2019-10-14 23:13:03,311 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-14 23:13:03,311 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2019-10-14 23:13:03,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2019-10-14 23:13:03,312 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:13:03,313 INFO L380 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, 1, 1, 1] [2019-10-14 23:13:03,313 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:13:03,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:13:03,313 INFO L82 PathProgramCache]: Analyzing trace with hash 1489805475, now seen corresponding path program 1 times [2019-10-14 23:13:03,314 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:13:03,314 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [515123238] [2019-10-14 23:13:03,314 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:13:03,314 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:13:03,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:13:03,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:03,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:03,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:03,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:03,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:03,525 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-14 23:13:03,525 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [515123238] [2019-10-14 23:13:03,526 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695090660] [2019-10-14 23:13:03,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:13:03,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:03,691 INFO L256 TraceCheckSpWp]: Trace formula consists of 247 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-14 23:13:03,700 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:13:03,767 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-14 23:13:03,768 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:13:03,768 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 9 [2019-10-14 23:13:03,768 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787092355] [2019-10-14 23:13:03,769 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-14 23:13:03,769 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:13:03,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-14 23:13:03,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2019-10-14 23:13:03,770 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 9 states. [2019-10-14 23:13:03,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-14 23:13:03,963 INFO L93 Difference]: Finished difference Result 70 states and 81 transitions. [2019-10-14 23:13:03,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-10-14 23:13:03,964 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 41 [2019-10-14 23:13:03,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-14 23:13:03,965 INFO L225 Difference]: With dead ends: 70 [2019-10-14 23:13:03,965 INFO L226 Difference]: Without dead ends: 45 [2019-10-14 23:13:03,967 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2019-10-14 23:13:03,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-10-14 23:13:03,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 42. [2019-10-14 23:13:03,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-10-14 23:13:03,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2019-10-14 23:13:03,979 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 41 [2019-10-14 23:13:03,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-14 23:13:03,980 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2019-10-14 23:13:03,980 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-14 23:13:03,980 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2019-10-14 23:13:03,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2019-10-14 23:13:03,984 INFO L372 BasicCegarLoop]: Found error trace [2019-10-14 23:13:03,984 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-14 23:13:04,190 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:13:04,190 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-14 23:13:04,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-14 23:13:04,191 INFO L82 PathProgramCache]: Analyzing trace with hash 341969372, now seen corresponding path program 2 times [2019-10-14 23:13:04,191 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-14 23:13:04,191 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086743594] [2019-10-14 23:13:04,191 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:13:04,191 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-14 23:13:04,192 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-14 23:13:04,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:04,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:04,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:04,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:04,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:04,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:05,144 WARN L191 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 49 [2019-10-14 23:13:05,423 WARN L191 SmtUtils]: Spent 170.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 57 [2019-10-14 23:13:05,686 WARN L191 SmtUtils]: Spent 164.00 ms on a formula simplification. DAG size of input: 74 DAG size of output: 64 [2019-10-14 23:13:05,971 WARN L191 SmtUtils]: Spent 174.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 65 [2019-10-14 23:13:06,222 WARN L191 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2019-10-14 23:13:06,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-14 23:13:06,715 WARN L191 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 38 [2019-10-14 23:13:06,742 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-14 23:13:06,742 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086743594] [2019-10-14 23:13:06,742 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [778560170] [2019-10-14 23:13:06,742 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-14 23:13:06,895 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2019-10-14 23:13:06,895 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-14 23:13:06,900 INFO L256 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 109 conjunts are in the unsatisfiable core [2019-10-14 23:13:06,906 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-14 23:13:07,019 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 [2019-10-14 23:13:07,019 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:13:07,028 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:13:07,028 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:13:07,029 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:16, output treesize:15 [2019-10-14 23:13:07,053 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2019-10-14 23:13:07,054 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:13:07,064 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:13:07,064 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:13:07,065 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:25, output treesize:21 [2019-10-14 23:13:07,146 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2019-10-14 23:13:07,147 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:13:07,162 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:13:07,163 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:13:07,163 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:36, output treesize:21 [2019-10-14 23:13:07,335 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 3 [2019-10-14 23:13:07,335 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:13:07,356 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:13:07,362 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 15 treesize of output 7 [2019-10-14 23:13:07,362 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-14 23:13:07,375 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:13:07,379 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 9 treesize of output 5 [2019-10-14 23:13:07,380 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-10-14 23:13:07,388 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:13:07,389 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:13:07,389 INFO L221 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:48, output treesize:13 [2019-10-14 23:13:07,542 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-14 23:13:07,558 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:13:07,560 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. [2019-10-14 23:13:07,560 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:81, output treesize:67 [2019-10-14 23:13:11,640 WARN L191 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 42 [2019-10-14 23:13:15,746 WARN L191 SmtUtils]: Spent 2.01 s on a formula simplification that was a NOOP. DAG size: 48 [2019-10-14 23:13:15,980 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-14 23:13:16,023 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:13:16,027 INFO L496 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-14 23:13:16,065 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:13:16,067 INFO L496 ElimStorePlain]: Start of recursive call 1: 3 dim-0 vars, 2 dim-2 vars, End of recursive call: 5 dim-0 vars, and 1 xjuncts. [2019-10-14 23:13:16,067 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 5 variables, input treesize:166, output treesize:321 [2019-10-14 23:13:20,275 INFO L496 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-14 23:13:20,356 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:13:20,357 INFO L496 ElimStorePlain]: Start of recursive call 1: 9 dim-0 vars, 1 dim-2 vars, End of recursive call: 10 dim-0 vars, and 1 xjuncts. [2019-10-14 23:13:20,358 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 10 variables, input treesize:534, output treesize:578 [2019-10-14 23:13:38,977 WARN L191 SmtUtils]: Spent 151.00 ms on a formula simplification that was a NOOP. DAG size: 84 [2019-10-14 23:13:39,025 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:13:39,026 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 15 treesize of output 19 [2019-10-14 23:13:39,026 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:13:39,144 WARN L191 SmtUtils]: Spent 117.00 ms on a formula simplification that was a NOOP. DAG size: 80 [2019-10-14 23:13:39,144 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:13:39,150 INFO L392 ElimStorePlain]: Different costs {8=[|v_#memory_int_BEFORE_CALL_4|], 20=[|v_#memory_$Pointer$.base_BEFORE_CALL_4|, |v_#memory_$Pointer$.offset_BEFORE_CALL_4|]} [2019-10-14 23:13:39,166 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-14 23:13:39,172 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:13:39,175 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:13:39,234 INFO L341 Elim1Store]: treesize reduction 44, result has 41.3 percent of original size [2019-10-14 23:13:39,235 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 205 treesize of output 88 [2019-10-14 23:13:39,238 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-14 23:13:39,377 WARN L191 SmtUtils]: Spent 138.00 ms on a formula simplification that was a NOOP. DAG size: 78 [2019-10-14 23:13:39,378 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:13:39,382 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:13:39,394 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:13:39,399 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:13:39,625 WARN L191 SmtUtils]: Spent 217.00 ms on a formula simplification. DAG size of input: 71 DAG size of output: 65 [2019-10-14 23:13:39,625 INFO L341 Elim1Store]: treesize reduction 86, result has 77.5 percent of original size [2019-10-14 23:13:39,626 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 4 case distinctions, treesize of input 329 treesize of output 470 [2019-10-14 23:13:39,628 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 23:13:39,629 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:39,633 INFO L496 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2019-10-14 23:13:40,056 WARN L191 SmtUtils]: Spent 422.00 ms on a formula simplification. DAG size of input: 96 DAG size of output: 80 [2019-10-14 23:13:40,057 INFO L567 ElimStorePlain]: treesize reduction 302, result has 67.4 percent of original size [2019-10-14 23:13:40,060 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:13:40,063 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:13:40,065 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:13:40,254 WARN L191 SmtUtils]: Spent 179.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 59 [2019-10-14 23:13:40,254 INFO L341 Elim1Store]: treesize reduction 56, result has 76.0 percent of original size [2019-10-14 23:13:40,255 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 446 treesize of output 392 [2019-10-14 23:13:40,256 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 23:13:40,257 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:40,257 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:40,258 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 23:13:40,259 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:40,261 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:40,263 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 23:13:40,264 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 23:13:40,264 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:40,266 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:40,267 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 23:13:40,268 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:40,269 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:40,271 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:40,271 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:40,273 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 23:13:40,273 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:40,275 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:40,277 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:40,278 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:40,279 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 23:13:40,279 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:40,281 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:40,283 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 23:13:40,284 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 23:13:40,285 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:40,286 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:40,287 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 23:13:40,287 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:40,288 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:40,297 INFO L496 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 6 xjuncts. [2019-10-14 23:13:41,008 WARN L191 SmtUtils]: Spent 709.00 ms on a formula simplification. DAG size of input: 193 DAG size of output: 83 [2019-10-14 23:13:41,008 INFO L567 ElimStorePlain]: treesize reduction 11534, result has 4.0 percent of original size [2019-10-14 23:13:41,010 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:41,011 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:41,012 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:41,013 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:41,015 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:41,017 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:41,018 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:41,019 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:41,020 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 23:13:41,021 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:41,022 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 23:13:41,026 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:41,028 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:41,028 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 23:13:41,029 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:41,029 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:41,030 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-14 23:13:41,031 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:41,032 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-14 23:13:41,034 INFO L496 ElimStorePlain]: Start of recursive call 1: 10 dim-0 vars, 1 dim-1 vars, 3 dim-2 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-10-14 23:13:41,034 INFO L221 ElimStorePlain]: Needed 5 recursive calls to eliminate 14 variables, input treesize:624, output treesize:945 [2019-10-14 23:13:41,230 INFO L392 ElimStorePlain]: Different costs {0=[|#memory_$Pointer$.offset|], 2=[|#memory_$Pointer$.base|]} [2019-10-14 23:13:41,233 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 63 treesize of output 43 [2019-10-14 23:13:41,234 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:13:41,251 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:13:41,253 INFO L189 IndexEqualityManager]: detected not equals via solver [2019-10-14 23:13:41,254 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:13:41,254 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 61 treesize of output 28 [2019-10-14 23:13:41,255 INFO L496 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2019-10-14 23:13:41,263 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:13:41,264 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:13:41,264 INFO L221 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:90, output treesize:14 [2019-10-14 23:13:41,330 INFO L172 IndexEqualityManager]: detected equality via solver [2019-10-14 23:13:41,332 INFO L341 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:13:41,333 INFO L375 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 10 [2019-10-14 23:13:41,333 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-10-14 23:13:41,337 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-10-14 23:13:41,337 INFO L496 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2019-10-14 23:13:41,337 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:21, output treesize:3 [2019-10-14 23:13:41,352 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 10 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-10-14 23:13:41,353 INFO L223 tionRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2019-10-14 23:13:41,353 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24, 23] total 37 [2019-10-14 23:13:41,353 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216578853] [2019-10-14 23:13:41,354 INFO L442 AbstractCegarLoop]: Interpolant automaton has 37 states [2019-10-14 23:13:41,354 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-10-14 23:13:41,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2019-10-14 23:13:41,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1207, Unknown=13, NotChecked=0, Total=1332 [2019-10-14 23:13:41,355 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 37 states.