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 --traceabstraction.trace.refinement.strategy SIFA_TAIPAN --sifa.abstract.domain CompoundDomain --rcfgbuilder.size.of.a.code.block LoopFreeBlock --sifa.call.summarizer TopInputCallSummarizer --sifa.fluid SizeLimitFluid --sifa.simplification.technique SIMPLIFY_QUICK -i ../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-f4eb214f-m [2019-10-13 22:55:47,023 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-13 22:55:47,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-13 22:55:47,044 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-13 22:55:47,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-13 22:55:47,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-13 22:55:47,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-13 22:55:47,052 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-13 22:55:47,057 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-13 22:55:47,058 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-13 22:55:47,059 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-13 22:55:47,060 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-13 22:55:47,060 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-13 22:55:47,061 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-13 22:55:47,062 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-13 22:55:47,063 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-13 22:55:47,064 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-13 22:55:47,065 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-13 22:55:47,067 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-13 22:55:47,068 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-13 22:55:47,070 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-13 22:55:47,071 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-13 22:55:47,072 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-13 22:55:47,073 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-13 22:55:47,075 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-13 22:55:47,075 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-13 22:55:47,075 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-13 22:55:47,076 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-13 22:55:47,077 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-13 22:55:47,077 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-13 22:55:47,078 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-13 22:55:47,079 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-13 22:55:47,079 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-13 22:55:47,080 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-13 22:55:47,081 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-13 22:55:47,081 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-13 22:55:47,082 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-13 22:55:47,082 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-13 22:55:47,082 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-13 22:55:47,083 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-13 22:55:47,084 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-13 22:55:47,085 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 [2019-10-13 22:55:47,100 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-13 22:55:47,101 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-13 22:55:47,102 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-13 22:55:47,102 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-13 22:55:47,102 INFO L138 SettingsManager]: * Use SBE=true [2019-10-13 22:55:47,103 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-13 22:55:47,103 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-13 22:55:47,103 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-13 22:55:47,103 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-13 22:55:47,103 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-13 22:55:47,104 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-13 22:55:47,104 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-13 22:55:47,104 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-13 22:55:47,104 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-13 22:55:47,104 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-13 22:55:47,105 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-13 22:55:47,105 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-13 22:55:47,105 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-13 22:55:47,105 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-13 22:55:47,106 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-13 22:55:47,106 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-13 22:55:47,106 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-13 22:55:47,106 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-13 22:55:47,106 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-13 22:55:47,107 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-13 22:55:47,107 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-13 22:55:47,107 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-13 22:55:47,107 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-13 22:55:47,107 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> SIFA_TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> CompoundDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> LoopFreeBlock Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Call Summarizer -> TopInputCallSummarizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Fluid -> SizeLimitFluid Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Simplification Technique -> SIMPLIFY_QUICK [2019-10-13 22:55:47,435 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-13 22:55:47,449 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-13 22:55:47,453 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-13 22:55:47,454 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-13 22:55:47,455 INFO L275 PluginConnector]: CDTParser initialized [2019-10-13 22:55:47,456 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-2.i [2019-10-13 22:55:47,521 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20e41c824/705370617ba84ae3a63dc57d35359e6c/FLAGa1ab2ce0d [2019-10-13 22:55:48,079 INFO L306 CDTParser]: Found 1 translation units. [2019-10-13 22:55:48,079 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext3-properties/sll_nondet_insert-2.i [2019-10-13 22:55:48,104 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20e41c824/705370617ba84ae3a63dc57d35359e6c/FLAGa1ab2ce0d [2019-10-13 22:55:48,357 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/20e41c824/705370617ba84ae3a63dc57d35359e6c [2019-10-13 22:55:48,368 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-13 22:55:48,370 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-13 22:55:48,371 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-13 22:55:48,371 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-13 22:55:48,374 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-13 22:55:48,375 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:55:48" (1/1) ... [2019-10-13 22:55:48,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6b5def57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:55:48, skipping insertion in model container [2019-10-13 22:55:48,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.10 10:55:48" (1/1) ... [2019-10-13 22:55:48,387 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-13 22:55:48,437 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-13 22:55:48,917 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:55:48,926 INFO L188 MainTranslator]: Completed pre-run [2019-10-13 22:55:48,978 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-13 22:55:49,050 INFO L192 MainTranslator]: Completed translation [2019-10-13 22:55:49,050 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:55:49 WrapperNode [2019-10-13 22:55:49,052 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-13 22:55:49,053 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-13 22:55:49,053 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-13 22:55:49,053 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-13 22:55:49,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:55:49" (1/1) ... [2019-10-13 22:55:49,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:55:49" (1/1) ... [2019-10-13 22:55:49,101 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:55:49" (1/1) ... [2019-10-13 22:55:49,101 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:55:49" (1/1) ... [2019-10-13 22:55:49,131 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:55:49" (1/1) ... [2019-10-13 22:55:49,145 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:55:49" (1/1) ... [2019-10-13 22:55:49,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:55:49" (1/1) ... [2019-10-13 22:55:49,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-13 22:55:49,161 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-13 22:55:49,162 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-13 22:55:49,162 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-13 22:55:49,163 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:55:49" (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 [2019-10-13 22:55:49,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-13 22:55:49,226 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-13 22:55:49,226 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-13 22:55:49,227 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-13 22:55:49,227 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-13 22:55:49,227 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-10-13 22:55:49,227 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2019-10-13 22:55:49,227 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2019-10-13 22:55:49,228 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2019-10-13 22:55:49,228 INFO L138 BoogieDeclarations]: Found implementation of procedure _get_nondet_int [2019-10-13 22:55:49,228 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-13 22:55:49,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-13 22:55:49,228 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-13 22:55:49,229 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-13 22:55:49,229 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-13 22:55:49,229 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-13 22:55:49,229 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-13 22:55:49,229 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-13 22:55:49,229 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-13 22:55:49,230 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-13 22:55:49,230 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-13 22:55:49,230 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-13 22:55:49,230 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-13 22:55:49,230 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-13 22:55:49,230 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-13 22:55:49,231 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-13 22:55:49,231 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-13 22:55:49,231 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-13 22:55:49,231 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-13 22:55:49,231 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-13 22:55:49,231 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-13 22:55:49,232 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-13 22:55:49,232 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-13 22:55:49,232 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-13 22:55:49,232 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-13 22:55:49,232 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-13 22:55:49,232 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-13 22:55:49,233 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-13 22:55:49,233 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-13 22:55:49,233 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-13 22:55:49,233 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-13 22:55:49,233 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-13 22:55:49,233 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-13 22:55:49,234 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-13 22:55:49,234 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-13 22:55:49,234 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-13 22:55:49,234 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-13 22:55:49,234 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-13 22:55:49,234 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-13 22:55:49,235 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-13 22:55:49,235 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-13 22:55:49,235 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-13 22:55:49,235 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-13 22:55:49,235 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-13 22:55:49,235 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-13 22:55:49,236 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-13 22:55:49,236 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-13 22:55:49,236 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-13 22:55:49,236 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-13 22:55:49,236 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-13 22:55:49,237 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-13 22:55:49,237 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-13 22:55:49,237 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-13 22:55:49,237 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-13 22:55:49,237 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-13 22:55:49,237 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-13 22:55:49,237 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-13 22:55:49,238 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-13 22:55:49,238 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-13 22:55:49,238 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-13 22:55:49,238 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-13 22:55:49,238 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-13 22:55:49,238 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-13 22:55:49,239 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-13 22:55:49,239 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-13 22:55:49,239 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-13 22:55:49,239 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-13 22:55:49,239 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-13 22:55:49,239 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-13 22:55:49,240 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-13 22:55:49,240 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-13 22:55:49,240 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-13 22:55:49,240 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-13 22:55:49,240 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-13 22:55:49,240 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-13 22:55:49,241 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-13 22:55:49,241 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-13 22:55:49,241 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-13 22:55:49,241 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-13 22:55:49,241 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-13 22:55:49,241 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-13 22:55:49,241 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-13 22:55:49,242 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-13 22:55:49,242 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-13 22:55:49,242 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-13 22:55:49,242 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-13 22:55:49,242 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-13 22:55:49,242 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-13 22:55:49,242 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-13 22:55:49,243 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-13 22:55:49,243 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-13 22:55:49,243 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-13 22:55:49,243 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-13 22:55:49,243 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-13 22:55:49,243 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-13 22:55:49,244 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-13 22:55:49,244 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-13 22:55:49,244 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-13 22:55:49,244 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-13 22:55:49,244 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-13 22:55:49,244 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-13 22:55:49,244 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-13 22:55:49,244 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-13 22:55:49,245 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-13 22:55:49,245 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-13 22:55:49,245 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-13 22:55:49,245 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-13 22:55:49,245 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-13 22:55:49,245 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-13 22:55:49,246 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-10-13 22:55:49,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-13 22:55:49,246 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-13 22:55:49,246 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2019-10-13 22:55:49,246 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-13 22:55:49,246 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2019-10-13 22:55:49,246 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-13 22:55:49,247 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2019-10-13 22:55:49,247 INFO L130 BoogieDeclarations]: Found specification of procedure _get_nondet_int [2019-10-13 22:55:49,247 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-13 22:55:49,247 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-13 22:55:49,247 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-13 22:55:49,249 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-13 22:55:49,250 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-13 22:55:49,643 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-13 22:55:50,030 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-13 22:55:50,030 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-13 22:55:50,032 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:55:50 BoogieIcfgContainer [2019-10-13 22:55:50,032 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-13 22:55:50,033 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-13 22:55:50,034 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-13 22:55:50,037 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-13 22:55:50,037 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.10 10:55:48" (1/3) ... [2019-10-13 22:55:50,038 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cc0cc7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:55:50, skipping insertion in model container [2019-10-13 22:55:50,038 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.10 10:55:49" (2/3) ... [2019-10-13 22:55:50,039 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cc0cc7e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.10 10:55:50, skipping insertion in model container [2019-10-13 22:55:50,039 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.10 10:55:50" (3/3) ... [2019-10-13 22:55:50,041 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_nondet_insert-2.i [2019-10-13 22:55:50,051 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-13 22:55:50,060 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-13 22:55:50,071 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-13 22:55:50,092 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-13 22:55:50,092 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-13 22:55:50,092 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-13 22:55:50,092 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-13 22:55:50,092 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-13 22:55:50,093 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-13 22:55:50,093 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-13 22:55:50,093 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-13 22:55:50,112 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states. [2019-10-13 22:55:50,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-13 22:55:50,118 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:55:50,119 INFO L380 BasicCegarLoop]: trace histogram [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] [2019-10-13 22:55:50,121 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:55:50,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:55:50,127 INFO L82 PathProgramCache]: Analyzing trace with hash -665084243, now seen corresponding path program 1 times [2019-10-13 22:55:50,136 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:55:50,136 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648989412] [2019-10-13 22:55:50,137 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:50,137 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:50,137 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:55:50,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:50,326 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 22:55:50,326 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648989412] [2019-10-13 22:55:50,327 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [63418737] [2019-10-13 22:55:50,327 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 [2019-10-13 22:55:50,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:50,507 INFO L256 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 1 conjunts are in the unsatisfiable core [2019-10-13 22:55:50,516 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:55:50,538 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 22:55:50,538 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:55:50,587 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 22:55:50,588 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 22:55:50,588 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2, 2] total 2 [2019-10-13 22:55:50,589 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800959008] [2019-10-13 22:55:50,596 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-13 22:55:50,596 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:55:50,611 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-13 22:55:50,612 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 22:55:50,614 INFO L87 Difference]: Start difference. First operand 55 states. Second operand 2 states. [2019-10-13 22:55:50,658 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:55:50,658 INFO L93 Difference]: Finished difference Result 105 states and 135 transitions. [2019-10-13 22:55:50,658 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-13 22:55:50,660 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 30 [2019-10-13 22:55:50,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:55:50,670 INFO L225 Difference]: With dead ends: 105 [2019-10-13 22:55:50,670 INFO L226 Difference]: Without dead ends: 42 [2019-10-13 22:55:50,676 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 61 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-13 22:55:50,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-10-13 22:55:50,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2019-10-13 22:55:50,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2019-10-13 22:55:50,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 48 transitions. [2019-10-13 22:55:50,721 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 48 transitions. Word has length 30 [2019-10-13 22:55:50,722 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:55:50,722 INFO L462 AbstractCegarLoop]: Abstraction has 42 states and 48 transitions. [2019-10-13 22:55:50,722 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-13 22:55:50,722 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 48 transitions. [2019-10-13 22:55:50,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-10-13 22:55:50,724 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:55:50,725 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] [2019-10-13 22:55:50,929 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:55:50,930 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:55:50,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:55:50,931 INFO L82 PathProgramCache]: Analyzing trace with hash -598447700, now seen corresponding path program 1 times [2019-10-13 22:55:50,931 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:55:50,932 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916995756] [2019-10-13 22:55:50,932 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:50,932 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:50,933 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:55:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:51,147 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 22:55:51,147 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916995756] [2019-10-13 22:55:51,148 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1050102317] [2019-10-13 22:55:51,148 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY 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 [2019-10-13 22:55:51,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:51,285 INFO L256 TraceCheckSpWp]: Trace formula consists of 146 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-13 22:55:51,293 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:55:51,342 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-13 22:55:51,342 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:55:51,614 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 22:55:51,615 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 2 imperfect interpolant sequences. [2019-10-13 22:55:51,615 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 15 [2019-10-13 22:55:51,615 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167630507] [2019-10-13 22:55:51,616 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-13 22:55:51,617 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:55:51,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-13 22:55:51,618 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2019-10-13 22:55:51,618 INFO L87 Difference]: Start difference. First operand 42 states and 48 transitions. Second operand 9 states. [2019-10-13 22:55:51,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:55:51,788 INFO L93 Difference]: Finished difference Result 74 states and 85 transitions. [2019-10-13 22:55:51,789 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-13 22:55:51,789 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2019-10-13 22:55:51,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:55:51,791 INFO L225 Difference]: With dead ends: 74 [2019-10-13 22:55:51,791 INFO L226 Difference]: Without dead ends: 44 [2019-10-13 22:55:51,792 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 58 SyntacticMatches, 3 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=199, Unknown=0, NotChecked=0, Total=240 [2019-10-13 22:55:51,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-10-13 22:55:51,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2019-10-13 22:55:51,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-10-13 22:55:51,801 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2019-10-13 22:55:51,801 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 33 [2019-10-13 22:55:51,803 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:55:51,803 INFO L462 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2019-10-13 22:55:51,803 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-13 22:55:51,803 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2019-10-13 22:55:51,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2019-10-13 22:55:51,805 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:55:51,805 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:55:52,013 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:55:52,014 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:55:52,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:55:52,014 INFO L82 PathProgramCache]: Analyzing trace with hash -528209773, now seen corresponding path program 1 times [2019-10-13 22:55:52,014 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:55:52,014 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568437376] [2019-10-13 22:55:52,015 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:52,015 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:52,015 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:55:52,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:52,170 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-13 22:55:52,171 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1568437376] [2019-10-13 22:55:52,171 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-13 22:55:52,171 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-13 22:55:52,171 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [407670653] [2019-10-13 22:55:52,172 INFO L442 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-13 22:55:52,172 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2019-10-13 22:55:52,172 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-13 22:55:52,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-13 22:55:52,173 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 10 states. [2019-10-13 22:55:52,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-13 22:55:52,328 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2019-10-13 22:55:52,328 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-13 22:55:52,329 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 37 [2019-10-13 22:55:52,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-13 22:55:52,332 INFO L225 Difference]: With dead ends: 61 [2019-10-13 22:55:52,332 INFO L226 Difference]: Without dead ends: 57 [2019-10-13 22:55:52,333 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2019-10-13 22:55:52,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2019-10-13 22:55:52,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 48. [2019-10-13 22:55:52,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-10-13 22:55:52,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 57 transitions. [2019-10-13 22:55:52,345 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 57 transitions. Word has length 37 [2019-10-13 22:55:52,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-13 22:55:52,345 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 57 transitions. [2019-10-13 22:55:52,345 INFO L463 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-13 22:55:52,346 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 57 transitions. [2019-10-13 22:55:52,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-13 22:55:52,347 INFO L372 BasicCegarLoop]: Found error trace [2019-10-13 22:55:52,347 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-13 22:55:52,347 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-13 22:55:52,348 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-13 22:55:52,348 INFO L82 PathProgramCache]: Analyzing trace with hash 653487607, now seen corresponding path program 1 times [2019-10-13 22:55:52,348 INFO L157 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-13 22:55:52,348 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108627852] [2019-10-13 22:55:52,349 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:52,349 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-13 22:55:52,349 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-13 22:55:52,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:52,477 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 22:55:52,477 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108627852] [2019-10-13 22:55:52,477 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [642366796] [2019-10-13 22:55:52,478 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:55:52,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-13 22:55:52,591 INFO L256 TraceCheckSpWp]: Trace formula consists of 177 conjuncts, 12 conjunts are in the unsatisfiable core [2019-10-13 22:55:52,594 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-13 22:55:52,611 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 5 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-13 22:55:52,611 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-13 22:55:52,843 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-13 22:55:52,844 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [998908728] [2019-10-13 22:55:52,892 INFO L162 IcfgInterpreter]: Started Sifa with 31 locations of interest [2019-10-13 22:55:52,892 INFO L169 IcfgInterpreter]: Building call graph [2019-10-13 22:55:52,907 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-13 22:55:52,914 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-13 22:55:52,915 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-13 22:55:53,039 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 24 for LOIs [2019-10-13 22:55:53,528 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-13 22:55:53,529 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:174) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:124) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:431) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:419) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:368) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterate(TraceAbstractionStarter.java:332) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:170) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:122) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:316) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) Caused by: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε at de.uni_freiburg.informatik.ultimate.lib.sifa.PriorityWorklist.add(PriorityWorklist.java:97) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.lambda$2(DagInterpreter.java:135) at java.lang.Iterable.forEach(Iterable.java:75) at java.util.Collections$UnmodifiableCollection.forEach(Collections.java:1080) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:135) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:104) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.computeTopSummary(TopInputCallSummarizer.java:78) at java.util.HashMap.computeIfAbsent(HashMap.java:1127) at de.uni_freiburg.informatik.ultimate.lib.sifa.summarizers.TopInputCallSummarizer.summarize(TopInputCallSummarizer.java:67) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretCallReturnSummary(DagInterpreter.java:230) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTransAndStoreLoiPred(DagInterpreter.java:214) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretTrans(DagInterpreter.java:197) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.ipretNode(DagInterpreter.java:166) at de.uni_freiburg.informatik.ultimate.lib.sifa.DagInterpreter.interpret(DagInterpreter.java:130) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpretLoisInProcedure(IcfgInterpreter.java:139) at de.uni_freiburg.informatik.ultimate.lib.sifa.IcfgInterpreter.interpret(IcfgInterpreter.java:129) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.SifaRunner.(SifaRunner.java:102) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleSifa.construct(IpTcStrategyModuleSifa.java:67) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:77) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:299) ... 21 more [2019-10-13 22:55:53,536 INFO L168 Benchmark]: Toolchain (without parser) took 5165.53 ms. Allocated memory was 145.8 MB in the beginning and 246.4 MB in the end (delta: 100.7 MB). Free memory was 101.9 MB in the beginning and 165.9 MB in the end (delta: -64.0 MB). Peak memory consumption was 36.7 MB. Max. memory is 7.1 GB. [2019-10-13 22:55:53,537 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 145.8 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-10-13 22:55:53,538 INFO L168 Benchmark]: CACSL2BoogieTranslator took 681.21 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 101.7 MB in the beginning and 168.1 MB in the end (delta: -66.4 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. [2019-10-13 22:55:53,539 INFO L168 Benchmark]: Boogie Preprocessor took 108.43 ms. Allocated memory is still 203.4 MB. Free memory was 168.1 MB in the beginning and 164.8 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2019-10-13 22:55:53,540 INFO L168 Benchmark]: RCFGBuilder took 870.89 ms. Allocated memory is still 203.4 MB. Free memory was 164.8 MB in the beginning and 107.5 MB in the end (delta: 57.3 MB). Peak memory consumption was 57.3 MB. Max. memory is 7.1 GB. [2019-10-13 22:55:53,540 INFO L168 Benchmark]: TraceAbstraction took 3500.57 ms. Allocated memory was 203.4 MB in the beginning and 246.4 MB in the end (delta: 43.0 MB). Free memory was 106.9 MB in the beginning and 165.9 MB in the end (delta: -59.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-10-13 22:55:53,545 INFO L335 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 145.8 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 681.21 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 101.7 MB in the beginning and 168.1 MB in the end (delta: -66.4 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 108.43 ms. Allocated memory is still 203.4 MB. Free memory was 168.1 MB in the beginning and 164.8 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 870.89 ms. Allocated memory is still 203.4 MB. Free memory was 164.8 MB in the beginning and 107.5 MB in the end (delta: 57.3 MB). Peak memory consumption was 57.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3500.57 ms. Allocated memory was 203.4 MB in the beginning and 246.4 MB in the end (delta: 43.0 MB). Free memory was 106.9 MB in the beginning and 165.9 MB in the end (delta: -59.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: AssertionError: java.lang.IllegalArgumentException: Tried to insert element unknown in custom order: ε: de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:307) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...