/usr/bin/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/forester-heap/sll-rb-cnstr_1-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 11:20:34,995 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 11:20:34,998 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 11:20:35,017 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 11:20:35,017 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 11:20:35,019 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 11:20:35,020 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 11:20:35,031 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 11:20:35,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 11:20:35,033 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 11:20:35,034 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 11:20:35,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 11:20:35,035 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 11:20:35,036 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 11:20:35,038 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 11:20:35,039 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 11:20:35,040 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 11:20:35,041 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 11:20:35,046 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 11:20:35,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 11:20:35,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 11:20:35,053 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 11:20:35,057 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 11:20:35,058 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 11:20:35,061 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 11:20:35,061 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 11:20:35,061 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 11:20:35,065 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 11:20:35,065 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 11:20:35,066 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 11:20:35,067 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 11:20:35,068 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 11:20:35,069 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 11:20:35,070 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 11:20:35,074 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 11:20:35,074 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 11:20:35,075 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 11:20:35,075 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 11:20:35,075 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 11:20:35,076 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 11:20:35,078 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 11:20:35,078 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 [2020-07-07 11:20:35,106 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 11:20:35,106 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 11:20:35,109 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-07 11:20:35,109 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-07 11:20:35,110 INFO L138 SettingsManager]: * Use SBE=true [2020-07-07 11:20:35,110 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 11:20:35,110 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 11:20:35,110 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 11:20:35,111 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 11:20:35,111 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 11:20:35,112 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 11:20:35,112 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 11:20:35,112 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 11:20:35,113 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 11:20:35,113 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 11:20:35,113 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 11:20:35,113 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 11:20:35,114 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 11:20:35,114 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-07 11:20:35,114 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 11:20:35,114 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 11:20:35,114 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 11:20:35,115 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 11:20:35,115 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-07 11:20:35,115 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-07 11:20:35,115 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-07 11:20:35,115 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-07 11:20:35,116 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 11:20:35,116 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-07 11:20:35,116 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-07 11:20:35,392 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 11:20:35,406 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 11:20:35,409 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 11:20:35,411 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 11:20:35,411 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 11:20:35,412 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-2.i [2020-07-07 11:20:35,480 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7129ef022/bdb5fbe8091e453f89f61a19fdbeed9d/FLAGebd2aa282 [2020-07-07 11:20:36,072 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 11:20:36,073 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-2.i [2020-07-07 11:20:36,092 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7129ef022/bdb5fbe8091e453f89f61a19fdbeed9d/FLAGebd2aa282 [2020-07-07 11:20:36,363 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7129ef022/bdb5fbe8091e453f89f61a19fdbeed9d [2020-07-07 11:20:36,372 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 11:20:36,374 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 11:20:36,375 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 11:20:36,375 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 11:20:36,379 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 11:20:36,380 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:20:36" (1/1) ... [2020-07-07 11:20:36,383 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@557bdc1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:20:36, skipping insertion in model container [2020-07-07 11:20:36,383 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 11:20:36" (1/1) ... [2020-07-07 11:20:36,389 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 11:20:36,437 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 11:20:36,884 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:20:36,899 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 11:20:36,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 11:20:37,007 INFO L208 MainTranslator]: Completed translation [2020-07-07 11:20:37,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:20:37 WrapperNode [2020-07-07 11:20:37,008 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 11:20:37,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 11:20:37,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 11:20:37,010 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 11:20:37,024 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:20:37" (1/1) ... [2020-07-07 11:20:37,026 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:20:37" (1/1) ... [2020-07-07 11:20:37,043 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:20:37" (1/1) ... [2020-07-07 11:20:37,043 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:20:37" (1/1) ... [2020-07-07 11:20:37,058 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:20:37" (1/1) ... [2020-07-07 11:20:37,065 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:20:37" (1/1) ... [2020-07-07 11:20:37,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:20:37" (1/1) ... [2020-07-07 11:20:37,075 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 11:20:37,076 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 11:20:37,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 11:20:37,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 11:20:37,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:20:37" (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 [2020-07-07 11:20:37,137 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 11:20:37,138 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 11:20:37,138 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 11:20:37,138 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-07 11:20:37,138 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-07 11:20:37,138 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-07 11:20:37,139 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-07 11:20:37,139 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-07 11:20:37,139 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-07 11:20:37,139 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-07 11:20:37,139 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-07 11:20:37,139 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-07 11:20:37,140 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-07 11:20:37,140 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-07 11:20:37,140 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-07 11:20:37,140 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-07 11:20:37,140 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-07 11:20:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-07 11:20:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-07 11:20:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-07 11:20:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-07 11:20:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-07 11:20:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-07 11:20:37,141 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-07 11:20:37,142 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-07 11:20:37,142 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-07 11:20:37,142 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-07 11:20:37,142 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-07 11:20:37,142 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-07 11:20:37,142 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-07 11:20:37,143 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-07 11:20:37,143 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-07 11:20:37,143 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-07 11:20:37,143 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-07 11:20:37,143 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-07 11:20:37,143 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-07 11:20:37,143 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-07 11:20:37,144 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-07 11:20:37,144 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-07 11:20:37,144 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-07 11:20:37,144 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-07 11:20:37,144 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-07 11:20:37,144 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-07 11:20:37,145 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-07 11:20:37,145 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-07 11:20:37,145 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-07 11:20:37,145 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-07 11:20:37,145 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-07 11:20:37,145 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-07 11:20:37,146 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-07 11:20:37,146 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-07 11:20:37,146 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-07 11:20:37,146 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-07 11:20:37,146 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 11:20:37,146 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-07 11:20:37,147 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-07 11:20:37,147 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 11:20:37,147 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-07 11:20:37,147 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-07 11:20:37,147 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-07 11:20:37,147 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-07 11:20:37,147 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-07 11:20:37,148 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 11:20:37,148 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-07 11:20:37,148 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-07 11:20:37,148 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-07 11:20:37,148 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-07 11:20:37,148 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-07 11:20:37,149 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-07 11:20:37,149 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-07 11:20:37,149 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-07 11:20:37,149 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-07 11:20:37,149 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-07 11:20:37,149 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-07 11:20:37,150 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-07 11:20:37,150 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-07 11:20:37,150 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-07 11:20:37,150 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-07 11:20:37,150 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-07 11:20:37,150 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-07 11:20:37,150 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-07 11:20:37,151 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-07 11:20:37,151 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-07 11:20:37,151 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-07 11:20:37,151 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-07 11:20:37,151 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-07 11:20:37,151 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-07 11:20:37,152 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-07 11:20:37,152 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-07 11:20:37,152 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-07 11:20:37,152 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-07 11:20:37,152 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-07 11:20:37,152 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-07 11:20:37,153 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-07 11:20:37,153 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-07 11:20:37,153 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-07 11:20:37,153 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-07 11:20:37,153 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-07 11:20:37,153 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-07 11:20:37,153 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-07 11:20:37,154 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-07 11:20:37,154 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-07 11:20:37,154 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-07 11:20:37,154 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-07 11:20:37,154 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-07 11:20:37,154 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-07 11:20:37,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 11:20:37,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 11:20:37,155 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 11:20:37,155 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 11:20:37,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 11:20:37,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 11:20:37,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 11:20:37,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 11:20:37,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 11:20:37,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 11:20:37,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 11:20:37,734 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 11:20:37,735 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-07-07 11:20:37,739 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:20:37 BoogieIcfgContainer [2020-07-07 11:20:37,739 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 11:20:37,740 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 11:20:37,741 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 11:20:37,744 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 11:20:37,744 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 11:20:36" (1/3) ... [2020-07-07 11:20:37,745 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@798fd9ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:20:37, skipping insertion in model container [2020-07-07 11:20:37,745 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 11:20:37" (2/3) ... [2020-07-07 11:20:37,746 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@798fd9ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 11:20:37, skipping insertion in model container [2020-07-07 11:20:37,746 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 11:20:37" (3/3) ... [2020-07-07 11:20:37,748 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-2.i [2020-07-07 11:20:37,759 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-07 11:20:37,768 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-07-07 11:20:37,783 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-07-07 11:20:37,808 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 11:20:37,808 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 11:20:37,808 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-07 11:20:37,809 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 11:20:37,809 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 11:20:37,809 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 11:20:37,809 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 11:20:37,810 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 11:20:37,830 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-07-07 11:20:37,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-07 11:20:37,836 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:20:37,837 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:20:37,838 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:20:37,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:20:37,845 INFO L82 PathProgramCache]: Analyzing trace with hash -810798801, now seen corresponding path program 1 times [2020-07-07 11:20:37,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:20:37,856 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1599000964] [2020-07-07 11:20:37,856 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:20:37,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:38,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:38,056 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:20:38,057 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1599000964] [2020-07-07 11:20:38,058 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:20:38,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 11:20:38,059 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1703070285] [2020-07-07 11:20:38,065 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 11:20:38,066 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:20:38,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 11:20:38,081 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:20:38,083 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2020-07-07 11:20:38,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:20:38,205 INFO L93 Difference]: Finished difference Result 59 states and 90 transitions. [2020-07-07 11:20:38,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 11:20:38,207 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-07-07 11:20:38,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:20:38,217 INFO L225 Difference]: With dead ends: 59 [2020-07-07 11:20:38,218 INFO L226 Difference]: Without dead ends: 27 [2020-07-07 11:20:38,221 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 11:20:38,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-07-07 11:20:38,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-07-07 11:20:38,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-07-07 11:20:38,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 30 transitions. [2020-07-07 11:20:38,259 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 30 transitions. Word has length 10 [2020-07-07 11:20:38,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:20:38,260 INFO L479 AbstractCegarLoop]: Abstraction has 27 states and 30 transitions. [2020-07-07 11:20:38,260 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 11:20:38,260 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 30 transitions. [2020-07-07 11:20:38,261 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-07 11:20:38,261 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:20:38,261 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:20:38,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 11:20:38,262 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:20:38,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:20:38,263 INFO L82 PathProgramCache]: Analyzing trace with hash 622671912, now seen corresponding path program 1 times [2020-07-07 11:20:38,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:20:38,263 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977220078] [2020-07-07 11:20:38,264 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:20:38,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:38,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:38,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:20:38,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977220078] [2020-07-07 11:20:38,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:20:38,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 11:20:38,423 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369746588] [2020-07-07 11:20:38,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 11:20:38,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:20:38,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 11:20:38,426 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 11:20:38,426 INFO L87 Difference]: Start difference. First operand 27 states and 30 transitions. Second operand 5 states. [2020-07-07 11:20:38,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:20:38,541 INFO L93 Difference]: Finished difference Result 35 states and 39 transitions. [2020-07-07 11:20:38,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-07 11:20:38,542 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-07-07 11:20:38,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:20:38,543 INFO L225 Difference]: With dead ends: 35 [2020-07-07 11:20:38,543 INFO L226 Difference]: Without dead ends: 33 [2020-07-07 11:20:38,544 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-07 11:20:38,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-07-07 11:20:38,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 25. [2020-07-07 11:20:38,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-07 11:20:38,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-07-07 11:20:38,551 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 11 [2020-07-07 11:20:38,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:20:38,551 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-07-07 11:20:38,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 11:20:38,552 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-07-07 11:20:38,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-07 11:20:38,552 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:20:38,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:20:38,553 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 11:20:38,553 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:20:38,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:20:38,553 INFO L82 PathProgramCache]: Analyzing trace with hash 59124385, now seen corresponding path program 1 times [2020-07-07 11:20:38,554 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:20:38,554 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [52968509] [2020-07-07 11:20:38,554 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:20:38,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:38,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:38,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:20:38,676 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [52968509] [2020-07-07 11:20:38,676 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:20:38,676 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 11:20:38,677 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058295821] [2020-07-07 11:20:38,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 11:20:38,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:20:38,678 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 11:20:38,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-07 11:20:38,678 INFO L87 Difference]: Start difference. First operand 25 states and 28 transitions. Second operand 6 states. [2020-07-07 11:20:38,837 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:20:38,837 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2020-07-07 11:20:38,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-07 11:20:38,838 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-07-07 11:20:38,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:20:38,839 INFO L225 Difference]: With dead ends: 51 [2020-07-07 11:20:38,839 INFO L226 Difference]: Without dead ends: 49 [2020-07-07 11:20:38,840 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-07 11:20:38,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-07-07 11:20:38,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 32. [2020-07-07 11:20:38,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-07 11:20:38,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 36 transitions. [2020-07-07 11:20:38,849 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 36 transitions. Word has length 14 [2020-07-07 11:20:38,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:20:38,849 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 36 transitions. [2020-07-07 11:20:38,850 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 11:20:38,850 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 36 transitions. [2020-07-07 11:20:38,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-07 11:20:38,851 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:20:38,851 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:20:38,851 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 11:20:38,851 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:20:38,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:20:38,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1951969173, now seen corresponding path program 1 times [2020-07-07 11:20:38,853 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:20:38,853 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010974543] [2020-07-07 11:20:38,853 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:20:38,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:39,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:39,116 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:20:39,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010974543] [2020-07-07 11:20:39,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [276482438] [2020-07-07 11:20:39,117 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 [2020-07-07 11:20:39,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:39,247 INFO L264 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 34 conjunts are in the unsatisfiable core [2020-07-07 11:20:39,258 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2020-07-07 11:20:39,337 INFO L384 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 [2020-07-07 11:20:39,337 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-07 11:20:39,357 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:20:39,364 INFO L384 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 13 treesize of output 9 [2020-07-07 11:20:39,364 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-07 11:20:39,375 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:20:39,376 INFO L544 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-07 11:20:39,376 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 2 variables, input treesize:29, output treesize:24 [2020-07-07 11:20:39,446 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:20:39,447 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2020-07-07 11:20:39,449 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-07 11:20:39,504 INFO L624 ElimStorePlain]: treesize reduction 14, result has 81.1 percent of original size [2020-07-07 11:20:39,513 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-07 11:20:39,517 INFO L384 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 1 new quantified variables, introduced 0 case distinctions, treesize of input 25 treesize of output 13 [2020-07-07 11:20:39,518 INFO L544 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-07-07 11:20:39,536 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:20:39,543 INFO L384 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 25 treesize of output 13 [2020-07-07 11:20:39,544 INFO L544 ElimStorePlain]: Start of recursive call 4: End of recursive call: and 1 xjuncts. [2020-07-07 11:20:39,559 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:20:39,561 INFO L544 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. [2020-07-07 11:20:39,562 INFO L244 ElimStorePlain]: Needed 4 recursive calls to eliminate 4 variables, input treesize:62, output treesize:27 [2020-07-07 11:20:39,677 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:20:39,678 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 26 [2020-07-07 11:20:39,679 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-07 11:20:39,710 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:20:39,712 INFO L440 ElimStorePlain]: Different costs {2=[|v_#memory_int_26|, |v_#memory_int_25|], 4=[|v_#memory_int_28|]} [2020-07-07 11:20:39,719 INFO L544 ElimStorePlain]: Start of recursive call 3: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-07 11:20:39,751 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:20:39,755 INFO L544 ElimStorePlain]: Start of recursive call 4: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-07-07 11:20:39,777 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:20:39,792 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-07-07 11:20:39,816 INFO L350 Elim1Store]: treesize reduction 42, result has 28.8 percent of original size [2020-07-07 11:20:39,817 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 4 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 52 treesize of output 45 [2020-07-07 11:20:39,818 INFO L544 ElimStorePlain]: Start of recursive call 5: End of recursive call: and 1 xjuncts. [2020-07-07 11:20:39,838 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:20:39,843 INFO L544 ElimStorePlain]: Start of recursive call 1: 4 dim-0 vars, 1 dim-1 vars, 3 dim-2 vars, End of recursive call: 4 dim-0 vars, and 1 xjuncts. [2020-07-07 11:20:39,844 INFO L244 ElimStorePlain]: Needed 5 recursive calls to eliminate 8 variables, input treesize:80, output treesize:43 [2020-07-07 11:20:39,957 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 0 case distinctions, treesize of input 33 treesize of output 13 [2020-07-07 11:20:39,958 INFO L544 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-07-07 11:20:39,967 INFO L624 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-07-07 11:20:39,968 INFO L544 ElimStorePlain]: Start of recursive call 1: 5 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-07-07 11:20:39,968 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 6 variables, input treesize:45, output treesize:3 [2020-07-07 11:20:39,973 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:20:39,973 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-07-07 11:20:39,974 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 12 [2020-07-07 11:20:39,974 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082465709] [2020-07-07 11:20:39,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-07 11:20:39,975 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:20:39,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-07 11:20:39,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-07-07 11:20:39,976 INFO L87 Difference]: Start difference. First operand 32 states and 36 transitions. Second operand 12 states. [2020-07-07 11:20:46,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:20:46,643 INFO L93 Difference]: Finished difference Result 64 states and 73 transitions. [2020-07-07 11:20:46,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-07 11:20:46,645 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 17 [2020-07-07 11:20:46,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:20:46,646 INFO L225 Difference]: With dead ends: 64 [2020-07-07 11:20:46,647 INFO L226 Difference]: Without dead ends: 62 [2020-07-07 11:20:46,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=227, Unknown=0, NotChecked=0, Total=306 [2020-07-07 11:20:46,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-07-07 11:20:46,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 23. [2020-07-07 11:20:46,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-07-07 11:20:46,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 26 transitions. [2020-07-07 11:20:46,664 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 26 transitions. Word has length 17 [2020-07-07 11:20:46,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:20:46,664 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 26 transitions. [2020-07-07 11:20:46,664 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-07 11:20:46,664 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 26 transitions. [2020-07-07 11:20:46,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-07 11:20:46,665 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:20:46,665 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:20:46,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-07-07 11:20:46,880 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:20:46,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:20:46,881 INFO L82 PathProgramCache]: Analyzing trace with hash -506610811, now seen corresponding path program 1 times [2020-07-07 11:20:46,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:20:46,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1813576983] [2020-07-07 11:20:46,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:20:46,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:46,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 11:20:46,986 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 11:20:46,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1813576983] [2020-07-07 11:20:46,987 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 11:20:46,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 11:20:46,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077562062] [2020-07-07 11:20:46,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 11:20:46,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-07 11:20:46,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 11:20:46,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-07 11:20:46,989 INFO L87 Difference]: Start difference. First operand 23 states and 26 transitions. Second operand 6 states. [2020-07-07 11:20:47,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 11:20:47,113 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-07-07 11:20:47,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 11:20:47,113 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-07-07 11:20:47,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 11:20:47,114 INFO L225 Difference]: With dead ends: 39 [2020-07-07 11:20:47,115 INFO L226 Difference]: Without dead ends: 31 [2020-07-07 11:20:47,115 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-07-07 11:20:47,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-07-07 11:20:47,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 25. [2020-07-07 11:20:47,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-07-07 11:20:47,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 28 transitions. [2020-07-07 11:20:47,121 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 28 transitions. Word has length 19 [2020-07-07 11:20:47,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 11:20:47,122 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 28 transitions. [2020-07-07 11:20:47,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 11:20:47,122 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 28 transitions. [2020-07-07 11:20:47,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-07 11:20:47,123 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 11:20:47,123 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 11:20:47,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 11:20:47,123 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 11:20:47,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 11:20:47,124 INFO L82 PathProgramCache]: Analyzing trace with hash -506551229, now seen corresponding path program 1 times [2020-07-07 11:20:47,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-07 11:20:47,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35851532] [2020-07-07 11:20:47,124 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 11:20:47,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 11:20:47,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 11:20:47,209 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-07 11:20:47,209 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 11:20:47,209 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 11:20:47,251 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 11:20:47 BoogieIcfgContainer [2020-07-07 11:20:47,252 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 11:20:47,254 INFO L168 Benchmark]: Toolchain (without parser) took 10880.12 ms. Allocated memory was 142.6 MB in the beginning and 248.0 MB in the end (delta: 105.4 MB). Free memory was 101.0 MB in the beginning and 205.3 MB in the end (delta: -104.3 MB). Peak memory consumption was 1.1 MB. Max. memory is 7.1 GB. [2020-07-07 11:20:47,254 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 142.6 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-07-07 11:20:47,255 INFO L168 Benchmark]: CACSL2BoogieTranslator took 633.84 ms. Allocated memory was 142.6 MB in the beginning and 204.5 MB in the end (delta: 61.9 MB). Free memory was 100.7 MB in the beginning and 171.2 MB in the end (delta: -70.5 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-07-07 11:20:47,256 INFO L168 Benchmark]: Boogie Preprocessor took 66.17 ms. Allocated memory is still 204.5 MB. Free memory was 171.2 MB in the beginning and 168.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-07-07 11:20:47,257 INFO L168 Benchmark]: RCFGBuilder took 663.20 ms. Allocated memory is still 204.5 MB. Free memory was 168.5 MB in the beginning and 123.7 MB in the end (delta: 44.9 MB). Peak memory consumption was 44.9 MB. Max. memory is 7.1 GB. [2020-07-07 11:20:47,258 INFO L168 Benchmark]: TraceAbstraction took 9511.51 ms. Allocated memory was 204.5 MB in the beginning and 248.0 MB in the end (delta: 43.5 MB). Free memory was 123.0 MB in the beginning and 205.3 MB in the end (delta: -82.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-07 11:20:47,262 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 142.6 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 633.84 ms. Allocated memory was 142.6 MB in the beginning and 204.5 MB in the end (delta: 61.9 MB). Free memory was 100.7 MB in the beginning and 171.2 MB in the end (delta: -70.5 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 66.17 ms. Allocated memory is still 204.5 MB. Free memory was 171.2 MB in the beginning and 168.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 663.20 ms. Allocated memory is still 204.5 MB. Free memory was 168.5 MB in the beginning and 123.7 MB in the end (delta: 44.9 MB). Peak memory consumption was 44.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9511.51 ms. Allocated memory was 204.5 MB in the beginning and 248.0 MB in the end (delta: 43.5 MB). Free memory was 123.0 MB in the beginning and 205.3 MB in the end (delta: -82.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1038]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L995] SLL* list = malloc(sizeof(SLL)); [L996] list->next = ((void*)0) [L997] list->colour = BLACK [L999] SLL* end = list; VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1002] COND FALSE !(__VERIFIER_nondet_int()) [L1023] end = ((void*)0) [L1024] end = list VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1027] COND FALSE !(!(((void*)0) != end)) VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1028] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1028] COND FALSE !(!(BLACK == end->colour)) [L1030] COND TRUE ((void*)0) != end [L1032] EXPR end->colour VAL [end={-1:0}, end->colour=1, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1032] COND FALSE !(RED == end->colour) [L1038] EXPR end->next VAL [end={-1:0}, end->next={0:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L1038] COND TRUE !(end->next) [L1038] __VERIFIER_error() VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 34 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 9.4s, OverallIterations: 6, TraceHistogramMax: 2, AutomataDifference: 7.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 134 SDtfs, 148 SDslu, 286 SDs, 0 SdLazy, 415 SolverSat, 46 SolverUnsat, 3 SolverUnknown, 0 SolverNotchecked, 6.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 60 GetRequests, 25 SyntacticMatches, 3 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 70 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.3s InterpolantComputationTime, 107 NumberOfCodeBlocks, 107 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 82 ConstructedInterpolants, 6 QuantifiedInterpolants, 10406 SizeOfPredicates, 13 NumberOfNonLiveVariables, 108 ConjunctsInSsa, 34 ConjunctsInUnsatCore, 6 InterpolantComputations, 4 PerfectInterpolantSequences, 0/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...