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 --abstractinterpretationv2.abstract.domain IntervalDomain --traceabstraction.trace.refinement.strategy TAIPAN --traceabstraction.abstract.interpretation.mode USE_PREDICATES -i ../../../trunk/examples/svcomp/list-ext3-properties/sll_of_sll_nondet_append-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-13a467a-m [2019-10-15 01:03:26,024 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-15 01:03:26,026 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-15 01:03:26,045 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-15 01:03:26,045 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-15 01:03:26,047 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-15 01:03:26,049 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-15 01:03:26,058 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-15 01:03:26,062 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-15 01:03:26,066 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-15 01:03:26,067 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-15 01:03:26,068 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-15 01:03:26,069 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-15 01:03:26,070 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-15 01:03:26,073 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-15 01:03:26,074 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-15 01:03:26,075 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-15 01:03:26,076 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-15 01:03:26,078 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-15 01:03:26,082 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-15 01:03:26,087 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-15 01:03:26,090 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-15 01:03:26,092 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-15 01:03:26,093 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-15 01:03:26,095 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-15 01:03:26,095 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-15 01:03:26,096 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-15 01:03:26,097 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-15 01:03:26,099 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-15 01:03:26,100 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-15 01:03:26,100 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-15 01:03:26,101 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-15 01:03:26,102 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-15 01:03:26,102 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-15 01:03:26,104 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-15 01:03:26,104 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-15 01:03:26,105 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-15 01:03:26,105 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-15 01:03:26,105 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-15 01:03:26,106 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-15 01:03:26,107 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-15 01:03:26,108 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 [2019-10-15 01:03:26,133 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-15 01:03:26,134 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-15 01:03:26,135 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-15 01:03:26,135 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-15 01:03:26,135 INFO L138 SettingsManager]: * Use SBE=true [2019-10-15 01:03:26,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-15 01:03:26,136 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-15 01:03:26,136 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-15 01:03:26,136 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-15 01:03:26,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-15 01:03:26,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-15 01:03:26,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-15 01:03:26,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-15 01:03:26,137 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-15 01:03:26,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-15 01:03:26,137 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-15 01:03:26,137 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-15 01:03:26,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-15 01:03:26,138 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-15 01:03:26,138 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-15 01:03:26,138 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-15 01:03:26,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-15 01:03:26,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-15 01:03:26,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-15 01:03:26,139 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-15 01:03:26,139 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-15 01:03:26,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-15 01:03:26,140 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-15 01:03:26,140 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.analysis.abstractinterpretationv2: Abstract domain -> IntervalDomain Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> TAIPAN Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Abstract interpretation Mode -> USE_PREDICATES [2019-10-15 01:03:26,430 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-15 01:03:26,443 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-15 01:03:26,447 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-15 01:03:26,448 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-15 01:03:26,448 INFO L275 PluginConnector]: CDTParser initialized [2019-10-15 01:03:26,449 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/sll_of_sll_nondet_append-1.i [2019-10-15 01:03:26,513 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2312d3620/9b0e7c70f1ff40818561c1abf400a155/FLAGadb32dcb5 [2019-10-15 01:03:27,095 INFO L306 CDTParser]: Found 1 translation units. [2019-10-15 01:03:27,096 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext3-properties/sll_of_sll_nondet_append-1.i [2019-10-15 01:03:27,109 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2312d3620/9b0e7c70f1ff40818561c1abf400a155/FLAGadb32dcb5 [2019-10-15 01:03:27,361 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2312d3620/9b0e7c70f1ff40818561c1abf400a155 [2019-10-15 01:03:27,369 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-15 01:03:27,371 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-15 01:03:27,372 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-15 01:03:27,372 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-15 01:03:27,375 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-15 01:03:27,376 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:03:27" (1/1) ... [2019-10-15 01:03:27,379 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1273f33 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:03:27, skipping insertion in model container [2019-10-15 01:03:27,379 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 01:03:27" (1/1) ... [2019-10-15 01:03:27,385 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-15 01:03:27,438 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-15 01:03:27,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:03:27,872 INFO L188 MainTranslator]: Completed pre-run [2019-10-15 01:03:27,941 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-15 01:03:27,991 INFO L192 MainTranslator]: Completed translation [2019-10-15 01:03:27,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:03:27 WrapperNode [2019-10-15 01:03:27,992 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-15 01:03:27,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-15 01:03:27,993 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-15 01:03:27,993 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-15 01:03:28,007 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:03:27" (1/1) ... [2019-10-15 01:03:28,008 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:03:27" (1/1) ... [2019-10-15 01:03:28,025 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:03:27" (1/1) ... [2019-10-15 01:03:28,026 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:03:27" (1/1) ... [2019-10-15 01:03:28,054 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:03:27" (1/1) ... [2019-10-15 01:03:28,065 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:03:27" (1/1) ... [2019-10-15 01:03:28,069 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:03:27" (1/1) ... [2019-10-15 01:03:28,077 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-15 01:03:28,084 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-15 01:03:28,084 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-15 01:03:28,084 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-15 01:03:28,085 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:03:27" (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 [2019-10-15 01:03:28,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-15 01:03:28,145 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-15 01:03:28,145 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-15 01:03:28,146 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-15 01:03:28,146 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-15 01:03:28,146 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2019-10-15 01:03:28,146 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create_with_sublist [2019-10-15 01:03:28,146 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_length [2019-10-15 01:03:28,147 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_append [2019-10-15 01:03:28,147 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_hierarchical_destroy [2019-10-15 01:03:28,147 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-15 01:03:28,150 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-15 01:03:28,151 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-15 01:03:28,152 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-15 01:03:28,152 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-15 01:03:28,152 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-15 01:03:28,154 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-15 01:03:28,154 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-15 01:03:28,155 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-15 01:03:28,155 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-15 01:03:28,155 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-15 01:03:28,155 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-15 01:03:28,155 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-15 01:03:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-15 01:03:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-15 01:03:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-15 01:03:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-15 01:03:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-15 01:03:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-15 01:03:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-15 01:03:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-15 01:03:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-15 01:03:28,156 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-15 01:03:28,157 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-15 01:03:28,157 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-15 01:03:28,157 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-15 01:03:28,157 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-15 01:03:28,157 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-15 01:03:28,157 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-15 01:03:28,157 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-15 01:03:28,157 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-15 01:03:28,158 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-15 01:03:28,158 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-15 01:03:28,158 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-15 01:03:28,158 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-15 01:03:28,158 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-15 01:03:28,158 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-15 01:03:28,158 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-15 01:03:28,158 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-15 01:03:28,158 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-15 01:03:28,159 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-15 01:03:28,159 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-15 01:03:28,159 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-15 01:03:28,159 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-15 01:03:28,159 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-15 01:03:28,159 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-15 01:03:28,159 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-15 01:03:28,159 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-15 01:03:28,159 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-15 01:03:28,160 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-15 01:03:28,160 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-15 01:03:28,160 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-15 01:03:28,160 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-15 01:03:28,160 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-15 01:03:28,160 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-15 01:03:28,160 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-15 01:03:28,160 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-15 01:03:28,160 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-15 01:03:28,161 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-15 01:03:28,161 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-15 01:03:28,161 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-15 01:03:28,161 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-15 01:03:28,161 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-15 01:03:28,161 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-15 01:03:28,162 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-15 01:03:28,162 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-15 01:03:28,162 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-15 01:03:28,162 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-15 01:03:28,162 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-15 01:03:28,162 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-15 01:03:28,162 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-15 01:03:28,162 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-15 01:03:28,163 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-15 01:03:28,163 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-15 01:03:28,163 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-15 01:03:28,163 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-15 01:03:28,163 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-15 01:03:28,163 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-15 01:03:28,164 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-15 01:03:28,164 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-15 01:03:28,164 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-15 01:03:28,164 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-15 01:03:28,164 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-15 01:03:28,164 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-15 01:03:28,165 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-15 01:03:28,165 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-15 01:03:28,165 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-15 01:03:28,165 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-15 01:03:28,165 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-15 01:03:28,165 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-15 01:03:28,165 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-15 01:03:28,166 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-15 01:03:28,166 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-15 01:03:28,166 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-15 01:03:28,166 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-15 01:03:28,166 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-15 01:03:28,166 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-15 01:03:28,166 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-15 01:03:28,167 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-15 01:03:28,167 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-15 01:03:28,167 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-15 01:03:28,167 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-15 01:03:28,167 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-15 01:03:28,167 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-15 01:03:28,167 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-15 01:03:28,168 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-15 01:03:28,168 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-15 01:03:28,168 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-15 01:03:28,168 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-15 01:03:28,168 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2019-10-15 01:03:28,168 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-15 01:03:28,169 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-15 01:03:28,169 INFO L130 BoogieDeclarations]: Found specification of procedure node_create_with_sublist [2019-10-15 01:03:28,169 INFO L130 BoogieDeclarations]: Found specification of procedure sll_length [2019-10-15 01:03:28,169 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-15 01:03:28,169 INFO L130 BoogieDeclarations]: Found specification of procedure sll_append [2019-10-15 01:03:28,169 INFO L130 BoogieDeclarations]: Found specification of procedure sll_hierarchical_destroy [2019-10-15 01:03:28,169 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-15 01:03:28,170 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-15 01:03:28,170 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-15 01:03:28,170 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-15 01:03:28,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-15 01:03:28,170 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-15 01:03:28,573 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-15 01:03:28,806 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-15 01:03:28,807 INFO L284 CfgBuilder]: Removed 9 assume(true) statements. [2019-10-15 01:03:28,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:03:28 BoogieIcfgContainer [2019-10-15 01:03:28,808 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-15 01:03:28,809 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-15 01:03:28,809 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-15 01:03:28,812 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-15 01:03:28,813 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 01:03:27" (1/3) ... [2019-10-15 01:03:28,813 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19f31469 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:03:28, skipping insertion in model container [2019-10-15 01:03:28,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 01:03:27" (2/3) ... [2019-10-15 01:03:28,814 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@19f31469 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 01:03:28, skipping insertion in model container [2019-10-15 01:03:28,814 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 01:03:28" (3/3) ... [2019-10-15 01:03:28,816 INFO L109 eAbstractionObserver]: Analyzing ICFG sll_of_sll_nondet_append-1.i [2019-10-15 01:03:28,825 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-15 01:03:28,835 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-15 01:03:28,845 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-15 01:03:28,866 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-15 01:03:28,866 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-15 01:03:28,866 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-15 01:03:28,867 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-15 01:03:28,867 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-15 01:03:28,867 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-15 01:03:28,867 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-15 01:03:28,867 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-15 01:03:28,887 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states. [2019-10-15 01:03:28,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-15 01:03:28,893 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:03:28,894 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:03:28,895 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:03:28,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:03:28,901 INFO L82 PathProgramCache]: Analyzing trace with hash 881770505, now seen corresponding path program 1 times [2019-10-15 01:03:28,909 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:03:28,909 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048018171] [2019-10-15 01:03:28,909 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:03:28,910 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:03:28,910 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:03:29,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:03:29,053 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:03:29,054 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048018171] [2019-10-15 01:03:29,055 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:03:29,055 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-15 01:03:29,056 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451490538] [2019-10-15 01:03:29,061 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:03:29,062 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:03:29,078 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:03:29,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:03:29,081 INFO L87 Difference]: Start difference. First operand 69 states. Second operand 2 states. [2019-10-15 01:03:29,140 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:03:29,141 INFO L93 Difference]: Finished difference Result 132 states and 187 transitions. [2019-10-15 01:03:29,141 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:03:29,142 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 11 [2019-10-15 01:03:29,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:03:29,154 INFO L225 Difference]: With dead ends: 132 [2019-10-15 01:03:29,154 INFO L226 Difference]: Without dead ends: 52 [2019-10-15 01:03:29,161 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:03:29,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2019-10-15 01:03:29,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2019-10-15 01:03:29,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2019-10-15 01:03:29,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 63 transitions. [2019-10-15 01:03:29,253 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 63 transitions. Word has length 11 [2019-10-15 01:03:29,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:03:29,253 INFO L462 AbstractCegarLoop]: Abstraction has 52 states and 63 transitions. [2019-10-15 01:03:29,253 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:03:29,253 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 63 transitions. [2019-10-15 01:03:29,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-10-15 01:03:29,254 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:03:29,254 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:03:29,255 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:03:29,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:03:29,256 INFO L82 PathProgramCache]: Analyzing trace with hash 857758959, now seen corresponding path program 1 times [2019-10-15 01:03:29,256 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:03:29,257 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557580595] [2019-10-15 01:03:29,257 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:03:29,257 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:03:29,257 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:03:29,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:03:29,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:03:29,364 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557580595] [2019-10-15 01:03:29,364 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:03:29,364 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-15 01:03:29,364 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177734305] [2019-10-15 01:03:29,367 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-15 01:03:29,367 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:03:29,367 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-15 01:03:29,368 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:03:29,368 INFO L87 Difference]: Start difference. First operand 52 states and 63 transitions. Second operand 3 states. [2019-10-15 01:03:29,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:03:29,409 INFO L93 Difference]: Finished difference Result 76 states and 96 transitions. [2019-10-15 01:03:29,409 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-15 01:03:29,409 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2019-10-15 01:03:29,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:03:29,412 INFO L225 Difference]: With dead ends: 76 [2019-10-15 01:03:29,412 INFO L226 Difference]: Without dead ends: 59 [2019-10-15 01:03:29,414 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-15 01:03:29,414 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-10-15 01:03:29,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2019-10-15 01:03:29,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2019-10-15 01:03:29,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 64 transitions. [2019-10-15 01:03:29,438 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 64 transitions. Word has length 11 [2019-10-15 01:03:29,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:03:29,438 INFO L462 AbstractCegarLoop]: Abstraction has 53 states and 64 transitions. [2019-10-15 01:03:29,438 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-15 01:03:29,439 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 64 transitions. [2019-10-15 01:03:29,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-10-15 01:03:29,440 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:03:29,440 INFO L380 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:03:29,440 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:03:29,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:03:29,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1045120254, now seen corresponding path program 1 times [2019-10-15 01:03:29,441 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:03:29,441 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639210942] [2019-10-15 01:03:29,442 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:03:29,442 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:03:29,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:03:29,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:03:29,515 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-15 01:03:29,515 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639210942] [2019-10-15 01:03:29,515 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:03:29,516 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-15 01:03:29,516 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596334836] [2019-10-15 01:03:29,516 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-15 01:03:29,517 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:03:29,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-15 01:03:29,517 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-15 01:03:29,517 INFO L87 Difference]: Start difference. First operand 53 states and 64 transitions. Second operand 4 states. [2019-10-15 01:03:29,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:03:29,591 INFO L93 Difference]: Finished difference Result 79 states and 99 transitions. [2019-10-15 01:03:29,592 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:03:29,592 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2019-10-15 01:03:29,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:03:29,595 INFO L225 Difference]: With dead ends: 79 [2019-10-15 01:03:29,595 INFO L226 Difference]: Without dead ends: 59 [2019-10-15 01:03:29,596 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-15 01:03:29,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-10-15 01:03:29,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2019-10-15 01:03:29,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-10-15 01:03:29,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 69 transitions. [2019-10-15 01:03:29,604 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 69 transitions. Word has length 16 [2019-10-15 01:03:29,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:03:29,604 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 69 transitions. [2019-10-15 01:03:29,604 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-15 01:03:29,605 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 69 transitions. [2019-10-15 01:03:29,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-15 01:03:29,606 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:03:29,606 INFO L380 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:03:29,606 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:03:29,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:03:29,607 INFO L82 PathProgramCache]: Analyzing trace with hash 685223862, now seen corresponding path program 1 times [2019-10-15 01:03:29,607 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:03:29,607 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301557116] [2019-10-15 01:03:29,607 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:03:29,608 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:03:29,608 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:03:29,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:03:29,787 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:03:29,787 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301557116] [2019-10-15 01:03:29,788 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-15 01:03:29,788 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-10-15 01:03:29,788 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926548034] [2019-10-15 01:03:29,789 INFO L442 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-15 01:03:29,789 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:03:29,789 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-15 01:03:29,790 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2019-10-15 01:03:29,790 INFO L87 Difference]: Start difference. First operand 57 states and 69 transitions. Second operand 9 states. [2019-10-15 01:03:29,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:03:29,948 INFO L93 Difference]: Finished difference Result 130 states and 161 transitions. [2019-10-15 01:03:29,948 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-15 01:03:29,949 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 38 [2019-10-15 01:03:29,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:03:29,950 INFO L225 Difference]: With dead ends: 130 [2019-10-15 01:03:29,951 INFO L226 Difference]: Without dead ends: 84 [2019-10-15 01:03:29,951 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2019-10-15 01:03:29,952 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2019-10-15 01:03:29,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 80. [2019-10-15 01:03:29,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2019-10-15 01:03:29,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 100 transitions. [2019-10-15 01:03:29,964 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 100 transitions. Word has length 38 [2019-10-15 01:03:29,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:03:29,965 INFO L462 AbstractCegarLoop]: Abstraction has 80 states and 100 transitions. [2019-10-15 01:03:29,965 INFO L463 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-15 01:03:29,965 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 100 transitions. [2019-10-15 01:03:29,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2019-10-15 01:03:29,968 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:03:29,968 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:03:29,968 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:03:29,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:03:29,969 INFO L82 PathProgramCache]: Analyzing trace with hash -27576761, now seen corresponding path program 2 times [2019-10-15 01:03:29,969 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:03:29,969 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1631597723] [2019-10-15 01:03:29,969 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:03:29,969 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:03:29,970 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:03:30,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:03:30,216 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:03:30,217 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1631597723] [2019-10-15 01:03:30,217 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96938998] [2019-10-15 01:03:30,217 INFO L92 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 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 [2019-10-15 01:03:30,358 INFO L249 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2019-10-15 01:03:30,359 INFO L250 tOrderPrioritization]: Conjunction of SSA is unsat [2019-10-15 01:03:30,361 INFO L256 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-15 01:03:30,369 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:03:30,469 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-15 01:03:30,469 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:03:30,574 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2019-10-15 01:03:30,575 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:03:30,575 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [14] total 18 [2019-10-15 01:03:30,576 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560978978] [2019-10-15 01:03:30,576 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-15 01:03:30,577 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:03:30,577 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-15 01:03:30,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=262, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:03:30,578 INFO L87 Difference]: Start difference. First operand 80 states and 100 transitions. Second operand 6 states. [2019-10-15 01:03:30,708 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:03:30,708 INFO L93 Difference]: Finished difference Result 116 states and 145 transitions. [2019-10-15 01:03:30,709 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-15 01:03:30,709 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 43 [2019-10-15 01:03:30,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:03:30,711 INFO L225 Difference]: With dead ends: 116 [2019-10-15 01:03:30,711 INFO L226 Difference]: Without dead ends: 99 [2019-10-15 01:03:30,713 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2019-10-15 01:03:30,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2019-10-15 01:03:30,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 93. [2019-10-15 01:03:30,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2019-10-15 01:03:30,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 117 transitions. [2019-10-15 01:03:30,739 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 117 transitions. Word has length 43 [2019-10-15 01:03:30,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:03:30,739 INFO L462 AbstractCegarLoop]: Abstraction has 93 states and 117 transitions. [2019-10-15 01:03:30,739 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-15 01:03:30,739 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 117 transitions. [2019-10-15 01:03:30,742 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2019-10-15 01:03:30,743 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:03:30,743 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:03:30,949 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:03:30,950 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:03:30,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:03:30,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1977264063, now seen corresponding path program 1 times [2019-10-15 01:03:30,950 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:03:30,951 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1521894947] [2019-10-15 01:03:30,951 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:03:30,951 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:03:30,951 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:03:31,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:03:31,184 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 01:03:31,185 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1521894947] [2019-10-15 01:03:31,185 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670520542] [2019-10-15 01:03:31,185 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 [2019-10-15 01:03:31,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:03:31,323 INFO L256 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 10 conjunts are in the unsatisfiable core [2019-10-15 01:03:31,335 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:03:31,396 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:03:31,397 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:03:31,658 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:03:31,707 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:03:31,762 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:03:31,762 INFO L223 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-15 01:03:31,762 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [10, 10] imperfect sequences [11] total 18 [2019-10-15 01:03:31,763 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1433059485] [2019-10-15 01:03:31,763 INFO L442 AbstractCegarLoop]: Interpolant automaton has 15 states [2019-10-15 01:03:31,764 INFO L137 tionRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy TAIPAN [2019-10-15 01:03:31,764 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2019-10-15 01:03:31,764 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=260, Unknown=0, NotChecked=0, Total=306 [2019-10-15 01:03:31,764 INFO L87 Difference]: Start difference. First operand 93 states and 117 transitions. Second operand 15 states. [2019-10-15 01:03:32,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:03:32,250 INFO L93 Difference]: Finished difference Result 178 states and 223 transitions. [2019-10-15 01:03:32,250 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2019-10-15 01:03:32,250 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 54 [2019-10-15 01:03:32,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:03:32,253 INFO L225 Difference]: With dead ends: 178 [2019-10-15 01:03:32,253 INFO L226 Difference]: Without dead ends: 94 [2019-10-15 01:03:32,254 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 96 SyntacticMatches, 6 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=61, Invalid=359, Unknown=0, NotChecked=0, Total=420 [2019-10-15 01:03:32,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2019-10-15 01:03:32,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 89. [2019-10-15 01:03:32,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 89 states. [2019-10-15 01:03:32,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 114 transitions. [2019-10-15 01:03:32,263 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 114 transitions. Word has length 54 [2019-10-15 01:03:32,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:03:32,264 INFO L462 AbstractCegarLoop]: Abstraction has 89 states and 114 transitions. [2019-10-15 01:03:32,264 INFO L463 AbstractCegarLoop]: Interpolant automaton has 15 states. [2019-10-15 01:03:32,264 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 114 transitions. [2019-10-15 01:03:32,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2019-10-15 01:03:32,265 INFO L372 BasicCegarLoop]: Found error trace [2019-10-15 01:03:32,266 INFO L380 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-15 01:03:32,470 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:03:32,471 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-15 01:03:32,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:03:32,472 INFO L82 PathProgramCache]: Analyzing trace with hash -694434935, now seen corresponding path program 1 times [2019-10-15 01:03:32,472 INFO L157 tionRefinementEngine]: Executing refinement strategy TAIPAN [2019-10-15 01:03:32,473 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752567399] [2019-10-15 01:03:32,473 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:03:32,473 INFO L116 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-15 01:03:32,473 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-15 01:03:32,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:03:32,634 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2019-10-15 01:03:32,634 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752567399] [2019-10-15 01:03:32,634 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1147221054] [2019-10-15 01:03:32,635 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 [2019-10-15 01:03:32,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-15 01:03:32,788 INFO L256 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 11 conjunts are in the unsatisfiable core [2019-10-15 01:03:32,796 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-15 01:03:32,844 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:03:32,844 INFO L321 TraceCheckSpWp]: Computing backward predicates... [2019-10-15 01:03:33,123 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:03:33,192 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-15 01:03:33,264 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-15 01:03:33,265 INFO L342 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleAbstractInterpretation [77683957] [2019-10-15 01:03:33,270 INFO L211 CegarAbsIntRunner]: Running AI on error trace of length 58 [2019-10-15 01:03:33,301 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-15 01:03:33,302 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-15 01:03:33,355 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-15 01:03:33,356 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 19 root evaluator evaluations with a maximum evaluation depth of 0. Performed 19 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 32 variables. [2019-10-15 01:03:33,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-15 01:03:33,360 INFO L536 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-15 01:03:33,397 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-10-15 01:03:33,397 INFO L551 sIntCurrentIteration]: Unifying AI predicates [2019-10-15 01:03:33,399 INFO L553 sIntCurrentIteration]: We unified 56 AI predicates to 56 [2019-10-15 01:03:33,399 INFO L562 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-15 01:03:33,400 INFO L223 tionRefinementEngine]: Constructing automaton from 1 perfect and 3 imperfect interpolant sequences. [2019-10-15 01:03:33,400 INFO L236 tionRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [12, 11, 11] total 20 [2019-10-15 01:03:33,401 INFO L342 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689554240] [2019-10-15 01:03:33,401 INFO L442 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-15 01:03:33,402 INFO L137 tionRefinementEngine]: Using predicate unifier AbsIntPredicateUnifier provided by strategy TAIPAN [2019-10-15 01:03:33,402 INFO L124 tionRefinementEngine]: Using hoare triple checker CachingHoareTripleCheckerMap provided by strategy [2019-10-15 01:03:33,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-15 01:03:33,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:03:33,403 INFO L87 Difference]: Start difference. First operand 89 states and 114 transitions. Second operand 2 states. [2019-10-15 01:03:33,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-15 01:03:33,405 INFO L93 Difference]: Finished difference Result 89 states and 114 transitions. [2019-10-15 01:03:33,405 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-15 01:03:33,405 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 57 [2019-10-15 01:03:33,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-15 01:03:33,406 INFO L225 Difference]: With dead ends: 89 [2019-10-15 01:03:33,406 INFO L226 Difference]: Without dead ends: 0 [2019-10-15 01:03:33,407 INFO L600 BasicCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 56 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-15 01:03:33,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-15 01:03:33,407 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-15 01:03:33,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-15 01:03:33,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-15 01:03:33,408 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 57 [2019-10-15 01:03:33,408 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-15 01:03:33,408 INFO L462 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-15 01:03:33,408 INFO L463 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-15 01:03:33,408 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-15 01:03:33,408 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-15 01:03:33,610 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-15 01:03:33,616 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2019-10-15 01:03:33,670 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2019-10-15 01:03:33,671 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: true [2019-10-15 01:03:33,671 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:03:33,671 INFO L446 ceAbstractionStarter]: At program point myexitENTRY(lines 561 563) the Hoare annotation is: true [2019-10-15 01:03:33,671 INFO L443 ceAbstractionStarter]: For program point myexitEXIT(lines 561 563) no Hoare annotation was computed. [2019-10-15 01:03:33,671 INFO L446 ceAbstractionStarter]: At program point L562(line 562) the Hoare annotation is: true [2019-10-15 01:03:33,671 INFO L446 ceAbstractionStarter]: At program point sll_appendENTRY(lines 594 606) the Hoare annotation is: true [2019-10-15 01:03:33,671 INFO L443 ceAbstractionStarter]: For program point sll_appendEXIT(lines 594 606) no Hoare annotation was computed. [2019-10-15 01:03:33,671 INFO L443 ceAbstractionStarter]: For program point L598(lines 598 605) no Hoare annotation was computed. [2019-10-15 01:03:33,671 INFO L443 ceAbstractionStarter]: For program point L599-1(lines 599 601) no Hoare annotation was computed. [2019-10-15 01:03:33,671 INFO L446 ceAbstractionStarter]: At program point L599-3(lines 599 601) the Hoare annotation is: true [2019-10-15 01:03:33,672 INFO L443 ceAbstractionStarter]: For program point L598-2(lines 594 606) no Hoare annotation was computed. [2019-10-15 01:03:33,672 INFO L446 ceAbstractionStarter]: At program point L595(line 595) the Hoare annotation is: true [2019-10-15 01:03:33,672 INFO L443 ceAbstractionStarter]: For program point L599-4(lines 599 601) no Hoare annotation was computed. [2019-10-15 01:03:33,672 INFO L443 ceAbstractionStarter]: For program point L595-1(line 595) no Hoare annotation was computed. [2019-10-15 01:03:33,672 INFO L443 ceAbstractionStarter]: For program point __bswap_32ENTRY(lines 64 68) no Hoare annotation was computed. [2019-10-15 01:03:33,672 INFO L443 ceAbstractionStarter]: For program point __bswap_32FINAL(lines 64 68) no Hoare annotation was computed. [2019-10-15 01:03:33,672 INFO L443 ceAbstractionStarter]: For program point __bswap_32EXIT(lines 64 68) no Hoare annotation was computed. [2019-10-15 01:03:33,672 INFO L443 ceAbstractionStarter]: For program point sll_createEXIT(lines 564 576) no Hoare annotation was computed. [2019-10-15 01:03:33,672 INFO L446 ceAbstractionStarter]: At program point L569(line 569) the Hoare annotation is: true [2019-10-15 01:03:33,672 INFO L443 ceAbstractionStarter]: For program point L568(lines 568 570) no Hoare annotation was computed. [2019-10-15 01:03:33,673 INFO L443 ceAbstractionStarter]: For program point L568-1(lines 568 570) no Hoare annotation was computed. [2019-10-15 01:03:33,673 INFO L446 ceAbstractionStarter]: At program point sll_createENTRY(lines 564 576) the Hoare annotation is: true [2019-10-15 01:03:33,673 INFO L446 ceAbstractionStarter]: At program point L566-2(lines 566 574) the Hoare annotation is: true [2019-10-15 01:03:33,673 INFO L443 ceAbstractionStarter]: For program point L566-3(lines 566 574) no Hoare annotation was computed. [2019-10-15 01:03:33,673 INFO L443 ceAbstractionStarter]: For program point sll_createFINAL(lines 564 576) no Hoare annotation was computed. [2019-10-15 01:03:33,673 INFO L443 ceAbstractionStarter]: For program point __bswap_64ENTRY(lines 69 73) no Hoare annotation was computed. [2019-10-15 01:03:33,673 INFO L443 ceAbstractionStarter]: For program point __bswap_64FINAL(lines 69 73) no Hoare annotation was computed. [2019-10-15 01:03:33,673 INFO L443 ceAbstractionStarter]: For program point __bswap_64EXIT(lines 69 73) no Hoare annotation was computed. [2019-10-15 01:03:33,674 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2019-10-15 01:03:33,674 INFO L446 ceAbstractionStarter]: At program point L-1(line -1) the Hoare annotation is: true [2019-10-15 01:03:33,674 INFO L446 ceAbstractionStarter]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2019-10-15 01:03:33,674 INFO L443 ceAbstractionStarter]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2019-10-15 01:03:33,674 INFO L446 ceAbstractionStarter]: At program point node_create_with_sublistENTRY(lines 577 585) the Hoare annotation is: true [2019-10-15 01:03:33,674 INFO L443 ceAbstractionStarter]: For program point node_create_with_sublistFINAL(lines 577 585) no Hoare annotation was computed. [2019-10-15 01:03:33,674 INFO L443 ceAbstractionStarter]: For program point L582(line 582) no Hoare annotation was computed. [2019-10-15 01:03:33,674 INFO L446 ceAbstractionStarter]: At program point L580(line 580) the Hoare annotation is: true [2019-10-15 01:03:33,674 INFO L443 ceAbstractionStarter]: For program point L579(lines 579 581) no Hoare annotation was computed. [2019-10-15 01:03:33,674 INFO L446 ceAbstractionStarter]: At program point L579-1(lines 579 581) the Hoare annotation is: true [2019-10-15 01:03:33,674 INFO L443 ceAbstractionStarter]: For program point node_create_with_sublistEXIT(lines 577 585) no Hoare annotation was computed. [2019-10-15 01:03:33,675 INFO L443 ceAbstractionStarter]: For program point mainEXIT(lines 620 653) no Hoare annotation was computed. [2019-10-15 01:03:33,675 INFO L443 ceAbstractionStarter]: For program point L626-1(line 626) no Hoare annotation was computed. [2019-10-15 01:03:33,675 INFO L443 ceAbstractionStarter]: For program point L626-3(lines 626 628) no Hoare annotation was computed. [2019-10-15 01:03:33,675 INFO L439 ceAbstractionStarter]: At program point L626-5(lines 626 628) the Hoare annotation is: false [2019-10-15 01:03:33,675 INFO L443 ceAbstractionStarter]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 651) no Hoare annotation was computed. [2019-10-15 01:03:33,675 INFO L443 ceAbstractionStarter]: For program point L639(lines 639 646) no Hoare annotation was computed. [2019-10-15 01:03:33,675 INFO L443 ceAbstractionStarter]: For program point L631-2(lines 631 648) no Hoare annotation was computed. [2019-10-15 01:03:33,676 INFO L439 ceAbstractionStarter]: At program point L631-3(lines 631 648) the Hoare annotation is: (and (= 0 main_~ptr~0.base) (= main_~ptr~0.offset 0)) [2019-10-15 01:03:33,676 INFO L439 ceAbstractionStarter]: At program point L627(line 627) the Hoare annotation is: false [2019-10-15 01:03:33,676 INFO L443 ceAbstractionStarter]: For program point L631-4(lines 631 648) no Hoare annotation was computed. [2019-10-15 01:03:33,676 INFO L443 ceAbstractionStarter]: For program point L627-1(lines 626 628) no Hoare annotation was computed. [2019-10-15 01:03:33,676 INFO L439 ceAbstractionStarter]: At program point L636(line 636) the Hoare annotation is: false [2019-10-15 01:03:33,676 INFO L443 ceAbstractionStarter]: For program point L636-1(line 636) no Hoare annotation was computed. [2019-10-15 01:03:33,676 INFO L443 ceAbstractionStarter]: For program point L632(lines 632 634) no Hoare annotation was computed. [2019-10-15 01:03:33,676 INFO L443 ceAbstractionStarter]: For program point mainFINAL(lines 620 653) no Hoare annotation was computed. [2019-10-15 01:03:33,677 INFO L446 ceAbstractionStarter]: At program point L649(line 649) the Hoare annotation is: true [2019-10-15 01:03:33,677 INFO L443 ceAbstractionStarter]: For program point L649-1(line 649) no Hoare annotation was computed. [2019-10-15 01:03:33,677 INFO L439 ceAbstractionStarter]: At program point L645(lines 620 653) the Hoare annotation is: false [2019-10-15 01:03:33,677 INFO L446 ceAbstractionStarter]: At program point mainENTRY(lines 620 653) the Hoare annotation is: true [2019-10-15 01:03:33,677 INFO L443 ceAbstractionStarter]: For program point L637(lines 637 646) no Hoare annotation was computed. [2019-10-15 01:03:33,677 INFO L439 ceAbstractionStarter]: At program point L637-1(lines 635 647) the Hoare annotation is: false [2019-10-15 01:03:33,677 INFO L443 ceAbstractionStarter]: For program point L625-2(lines 625 629) no Hoare annotation was computed. [2019-10-15 01:03:33,677 INFO L439 ceAbstractionStarter]: At program point L625-3(lines 625 629) the Hoare annotation is: false [2019-10-15 01:03:33,678 INFO L443 ceAbstractionStarter]: For program point L625-4(lines 625 629) no Hoare annotation was computed. [2019-10-15 01:03:33,678 INFO L443 ceAbstractionStarter]: For program point L642(lines 642 646) no Hoare annotation was computed. [2019-10-15 01:03:33,678 INFO L443 ceAbstractionStarter]: For program point sll_lengthEXIT(lines 586 593) no Hoare annotation was computed. [2019-10-15 01:03:33,678 INFO L446 ceAbstractionStarter]: At program point sll_lengthENTRY(lines 586 593) the Hoare annotation is: true [2019-10-15 01:03:33,678 INFO L446 ceAbstractionStarter]: At program point L588-2(lines 588 591) the Hoare annotation is: true [2019-10-15 01:03:33,678 INFO L443 ceAbstractionStarter]: For program point L588-3(lines 588 591) no Hoare annotation was computed. [2019-10-15 01:03:33,678 INFO L443 ceAbstractionStarter]: For program point sll_lengthFINAL(lines 586 593) no Hoare annotation was computed. [2019-10-15 01:03:33,679 INFO L446 ceAbstractionStarter]: At program point L611-2(lines 611 615) the Hoare annotation is: true [2019-10-15 01:03:33,679 INFO L443 ceAbstractionStarter]: For program point L611-3(lines 611 615) no Hoare annotation was computed. [2019-10-15 01:03:33,679 INFO L446 ceAbstractionStarter]: At program point L608-2(lines 608 618) the Hoare annotation is: true [2019-10-15 01:03:33,679 INFO L443 ceAbstractionStarter]: For program point L608-3(lines 607 619) no Hoare annotation was computed. [2019-10-15 01:03:33,679 INFO L446 ceAbstractionStarter]: At program point sll_hierarchical_destroyENTRY(lines 607 619) the Hoare annotation is: true [2019-10-15 01:03:33,679 INFO L443 ceAbstractionStarter]: For program point sll_hierarchical_destroyEXIT(lines 607 619) no Hoare annotation was computed. [2019-10-15 01:03:33,690 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 01:03:33 BoogieIcfgContainer [2019-10-15 01:03:33,691 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-15 01:03:33,693 INFO L168 Benchmark]: Toolchain (without parser) took 6321.46 ms. Allocated memory was 146.3 MB in the beginning and 287.3 MB in the end (delta: 141.0 MB). Free memory was 101.5 MB in the beginning and 146.8 MB in the end (delta: -45.3 MB). Peak memory consumption was 95.7 MB. Max. memory is 7.1 GB. [2019-10-15 01:03:33,693 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 146.3 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2019-10-15 01:03:33,694 INFO L168 Benchmark]: CACSL2BoogieTranslator took 620.71 ms. Allocated memory was 146.3 MB in the beginning and 204.5 MB in the end (delta: 58.2 MB). Free memory was 101.2 MB in the beginning and 168.9 MB in the end (delta: -67.6 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2019-10-15 01:03:33,695 INFO L168 Benchmark]: Boogie Preprocessor took 84.87 ms. Allocated memory is still 204.5 MB. Free memory was 168.9 MB in the beginning and 165.5 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2019-10-15 01:03:33,696 INFO L168 Benchmark]: RCFGBuilder took 724.29 ms. Allocated memory is still 204.5 MB. Free memory was 165.5 MB in the beginning and 112.9 MB in the end (delta: 52.6 MB). Peak memory consumption was 52.6 MB. Max. memory is 7.1 GB. [2019-10-15 01:03:33,697 INFO L168 Benchmark]: TraceAbstraction took 4881.42 ms. Allocated memory was 204.5 MB in the beginning and 287.3 MB in the end (delta: 82.8 MB). Free memory was 112.2 MB in the beginning and 146.8 MB in the end (delta: -34.5 MB). Peak memory consumption was 48.3 MB. Max. memory is 7.1 GB. [2019-10-15 01:03:33,700 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 146.3 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 620.71 ms. Allocated memory was 146.3 MB in the beginning and 204.5 MB in the end (delta: 58.2 MB). Free memory was 101.2 MB in the beginning and 168.9 MB in the end (delta: -67.6 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 84.87 ms. Allocated memory is still 204.5 MB. Free memory was 168.9 MB in the beginning and 165.5 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 724.29 ms. Allocated memory is still 204.5 MB. Free memory was 165.5 MB in the beginning and 112.9 MB in the end (delta: 52.6 MB). Peak memory consumption was 52.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4881.42 ms. Allocated memory was 204.5 MB in the beginning and 287.3 MB in the end (delta: 82.8 MB). Free memory was 112.2 MB in the beginning and 146.8 MB in the end (delta: -34.5 MB). Peak memory consumption was 48.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 651]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 611]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 620]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 562]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 631]: Loop Invariant Derived loop invariant: 0 == ptr && ptr == 0 - InvariantResult [Line: 625]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 599]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 608]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 566]: Loop Invariant Derived loop invariant: 1 - InvariantResult [Line: 626]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 635]: Loop Invariant Derived loop invariant: 0 - InvariantResult [Line: 588]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 11 procedures, 76 locations, 1 error locations. Result: SAFE, OverallTime: 4.8s, OverallIterations: 7, TraceHistogramMax: 3, AutomataDifference: 1.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 383 SDtfs, 192 SDslu, 1239 SDs, 0 SdLazy, 406 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 300 GetRequests, 243 SyntacticMatches, 6 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 56 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=93occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 7 MinimizatonAttempts, 23 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 28 LocationsWithAnnotation, 85 PreInvPairs, 93 NumberOfFragments, 34 HoareAnnotationTreeSize, 85 FomulaSimplifications, 33 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 28 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 384 NumberOfCodeBlocks, 352 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 525 ConstructedInterpolants, 0 QuantifiedInterpolants, 64843 SizeOfPredicates, 13 NumberOfNonLiveVariables, 519 ConjunctsInSsa, 25 ConjunctsInUnsatCore, 13 InterpolantComputations, 8 PerfectInterpolantSequences, 91/125 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: TIME[ms]: 90, ITERATIONS: 1, WAS_STRONG: 1, WEAKENING_RATIO: 0.9732142857142857, AVG_VARS_REMOVED_DURING_WEAKENING: 1.2678571428571428, AVG_WEAKENED_CONJUNCTS: 0.10714285714285714, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...