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-simple/dll2c_update_all_reverse.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 13:24:51,073 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 13:24:51,075 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 13:24:51,090 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 13:24:51,091 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 13:24:51,093 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 13:24:51,095 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 13:24:51,104 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 13:24:51,110 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 13:24:51,113 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 13:24:51,114 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 13:24:51,116 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 13:24:51,116 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 13:24:51,118 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 13:24:51,120 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 13:24:51,121 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 13:24:51,123 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 13:24:51,124 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 13:24:51,126 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 13:24:51,131 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 13:24:51,135 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 13:24:51,138 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 13:24:51,141 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 13:24:51,142 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 13:24:51,144 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 13:24:51,144 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 13:24:51,144 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 13:24:51,146 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 13:24:51,147 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 13:24:51,148 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 13:24:51,149 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 13:24:51,150 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 13:24:51,151 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 13:24:51,152 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 13:24:51,153 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 13:24:51,153 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 13:24:51,154 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 13:24:51,154 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 13:24:51,154 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 13:24:51,155 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 13:24:51,156 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 13:24:51,157 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 [2019-10-07 13:24:51,175 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 13:24:51,175 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 13:24:51,177 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 13:24:51,177 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 13:24:51,177 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 13:24:51,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 13:24:51,178 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 13:24:51,178 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 13:24:51,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 13:24:51,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 13:24:51,178 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 13:24:51,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 13:24:51,179 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 13:24:51,179 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 13:24:51,179 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 13:24:51,179 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 13:24:51,179 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 13:24:51,180 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 13:24:51,180 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 13:24:51,180 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 13:24:51,180 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 13:24:51,180 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 13:24:51,181 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 13:24:51,181 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 13:24:51,181 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 13:24:51,181 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 13:24:51,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 13:24:51,182 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 13:24:51,182 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 [2019-10-07 13:24:51,472 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 13:24:51,489 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 13:24:51,493 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 13:24:51,495 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 13:24:51,495 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 13:24:51,496 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2c_update_all_reverse.i [2019-10-07 13:24:51,566 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5afb17101/cd018b47942b4b319b9b9f9999b5b426/FLAGcbcab539f [2019-10-07 13:24:52,110 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 13:24:52,111 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2c_update_all_reverse.i [2019-10-07 13:24:52,124 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5afb17101/cd018b47942b4b319b9b9f9999b5b426/FLAGcbcab539f [2019-10-07 13:24:52,385 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5afb17101/cd018b47942b4b319b9b9f9999b5b426 [2019-10-07 13:24:52,393 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 13:24:52,394 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 13:24:52,395 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 13:24:52,395 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 13:24:52,398 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 13:24:52,399 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:24:52" (1/1) ... [2019-10-07 13:24:52,401 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2518b27f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:24:52, skipping insertion in model container [2019-10-07 13:24:52,401 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 01:24:52" (1/1) ... [2019-10-07 13:24:52,408 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 13:24:52,448 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 13:24:52,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:24:52,876 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 13:24:52,951 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 13:24:53,000 INFO L192 MainTranslator]: Completed translation [2019-10-07 13:24:53,001 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:24:53 WrapperNode [2019-10-07 13:24:53,001 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 13:24:53,002 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 13:24:53,002 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 13:24:53,002 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 13:24:53,016 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:24:53" (1/1) ... [2019-10-07 13:24:53,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:24:53" (1/1) ... [2019-10-07 13:24:53,038 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:24:53" (1/1) ... [2019-10-07 13:24:53,039 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:24:53" (1/1) ... [2019-10-07 13:24:53,057 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:24:53" (1/1) ... [2019-10-07 13:24:53,064 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:24:53" (1/1) ... [2019-10-07 13:24:53,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:24:53" (1/1) ... [2019-10-07 13:24:53,075 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 13:24:53,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 13:24:53,076 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 13:24:53,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 13:24:53,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:24:53" (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 [2019-10-07 13:24:53,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 13:24:53,135 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 13:24:53,135 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-07 13:24:53,136 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-07 13:24:53,136 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-07 13:24:53,136 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-10-07 13:24:53,136 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_create [2019-10-07 13:24:53,136 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_destroy [2019-10-07 13:24:53,137 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_get_data_at [2019-10-07 13:24:53,137 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_circular_update_at [2019-10-07 13:24:53,137 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 13:24:53,137 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 13:24:53,137 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-07 13:24:53,137 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-07 13:24:53,138 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-07 13:24:53,138 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-07 13:24:53,138 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-07 13:24:53,138 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-07 13:24:53,138 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-07 13:24:53,139 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-07 13:24:53,139 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-07 13:24:53,139 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-07 13:24:53,139 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-07 13:24:53,139 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-07 13:24:53,139 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-07 13:24:53,140 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-07 13:24:53,140 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-07 13:24:53,140 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-07 13:24:53,140 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-07 13:24:53,140 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-07 13:24:53,140 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-07 13:24:53,141 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-07 13:24:53,141 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-07 13:24:53,141 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-07 13:24:53,141 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-07 13:24:53,141 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-07 13:24:53,141 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-07 13:24:53,142 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-07 13:24:53,142 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-07 13:24:53,142 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-07 13:24:53,142 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-07 13:24:53,142 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-07 13:24:53,142 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-07 13:24:53,142 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-07 13:24:53,143 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-07 13:24:53,143 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-07 13:24:53,143 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-07 13:24:53,143 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-07 13:24:53,143 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-07 13:24:53,143 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-07 13:24:53,143 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-07 13:24:53,143 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-07 13:24:53,143 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-07 13:24:53,144 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-07 13:24:53,144 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-07 13:24:53,144 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-07 13:24:53,144 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-07 13:24:53,144 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-07 13:24:53,144 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-07 13:24:53,145 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-07 13:24:53,145 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-07 13:24:53,145 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-07 13:24:53,145 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-07 13:24:53,145 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-07 13:24:53,145 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 13:24:53,146 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-07 13:24:53,146 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-07 13:24:53,146 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 13:24:53,146 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-07 13:24:53,146 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-07 13:24:53,146 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-07 13:24:53,147 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-07 13:24:53,147 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-07 13:24:53,147 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-07 13:24:53,147 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-07 13:24:53,147 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-07 13:24:53,147 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-07 13:24:53,148 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-07 13:24:53,148 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-07 13:24:53,148 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-07 13:24:53,148 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-07 13:24:53,148 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-07 13:24:53,148 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-07 13:24:53,149 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-07 13:24:53,149 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-07 13:24:53,149 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-07 13:24:53,149 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-07 13:24:53,149 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-07 13:24:53,149 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-07 13:24:53,149 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-07 13:24:53,150 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-07 13:24:53,150 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-07 13:24:53,150 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-07 13:24:53,150 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-07 13:24:53,150 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-07 13:24:53,150 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-07 13:24:53,151 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-07 13:24:53,151 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-07 13:24:53,151 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-07 13:24:53,151 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-07 13:24:53,151 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-07 13:24:53,151 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-07 13:24:53,151 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-07 13:24:53,152 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-07 13:24:53,152 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-07 13:24:53,152 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-07 13:24:53,152 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-07 13:24:53,152 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-07 13:24:53,152 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-07 13:24:53,152 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-07 13:24:53,153 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-07 13:24:53,153 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-07 13:24:53,153 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-07 13:24:53,153 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-07 13:24:53,153 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-07 13:24:53,153 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-07 13:24:53,153 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-07 13:24:53,154 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-07 13:24:53,154 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-10-07 13:24:53,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-07 13:24:53,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 13:24:53,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-07 13:24:53,154 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_create [2019-10-07 13:24:53,155 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_destroy [2019-10-07 13:24:53,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 13:24:53,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 13:24:53,155 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_get_data_at [2019-10-07 13:24:53,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-07 13:24:53,155 INFO L130 BoogieDeclarations]: Found specification of procedure dll_circular_update_at [2019-10-07 13:24:53,155 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 13:24:53,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 13:24:53,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 13:24:53,680 INFO L685 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-07 13:24:54,015 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 13:24:54,015 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-07 13:24:54,017 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:24:54 BoogieIcfgContainer [2019-10-07 13:24:54,017 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 13:24:54,018 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 13:24:54,019 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 13:24:54,022 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 13:24:54,022 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 01:24:52" (1/3) ... [2019-10-07 13:24:54,023 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cce2f74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:24:54, skipping insertion in model container [2019-10-07 13:24:54,023 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 01:24:53" (2/3) ... [2019-10-07 13:24:54,024 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cce2f74 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 01:24:54, skipping insertion in model container [2019-10-07 13:24:54,024 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 01:24:54" (3/3) ... [2019-10-07 13:24:54,026 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2c_update_all_reverse.i [2019-10-07 13:24:54,036 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 13:24:54,045 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 13:24:54,057 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 13:24:54,084 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 13:24:54,085 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 13:24:54,085 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 13:24:54,085 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 13:24:54,085 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 13:24:54,086 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 13:24:54,086 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 13:24:54,086 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 13:24:54,106 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states. [2019-10-07 13:24:54,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-07 13:24:54,113 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:24:54,114 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:24:54,117 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:24:54,122 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:24:54,123 INFO L82 PathProgramCache]: Analyzing trace with hash 246515482, now seen corresponding path program 1 times [2019-10-07 13:24:54,132 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:24:54,133 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:24:54,133 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:24:54,133 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:24:54,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:24:54,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:24:54,397 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:24:54,398 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:24:54,399 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 13:24:54,399 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-07 13:24:54,403 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-07 13:24:54,417 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-07 13:24:54,418 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-07 13:24:54,420 INFO L87 Difference]: Start difference. First operand 47 states. Second operand 4 states. [2019-10-07 13:24:54,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:24:54,500 INFO L93 Difference]: Finished difference Result 76 states and 94 transitions. [2019-10-07 13:24:54,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-07 13:24:54,502 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2019-10-07 13:24:54,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:24:54,512 INFO L225 Difference]: With dead ends: 76 [2019-10-07 13:24:54,512 INFO L226 Difference]: Without dead ends: 42 [2019-10-07 13:24:54,516 INFO L606 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 [2019-10-07 13:24:54,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2019-10-07 13:24:54,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 34. [2019-10-07 13:24:54,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-07 13:24:54,561 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 39 transitions. [2019-10-07 13:24:54,563 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 39 transitions. Word has length 25 [2019-10-07 13:24:54,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:24:54,564 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 39 transitions. [2019-10-07 13:24:54,564 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-07 13:24:54,564 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 39 transitions. [2019-10-07 13:24:54,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-07 13:24:54,566 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:24:54,566 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:24:54,567 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:24:54,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:24:54,567 INFO L82 PathProgramCache]: Analyzing trace with hash -2069588377, now seen corresponding path program 1 times [2019-10-07 13:24:54,568 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:24:54,568 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:24:54,568 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:24:54,568 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:24:54,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:24:54,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:24:54,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 13:24:54,865 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:24:54,865 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:24:54,865 INFO L95 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 [2019-10-07 13:24:55,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:24:55,068 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 13:24:55,078 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:24:55,129 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-07 13:24:55,129 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:24:55,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-07 13:24:55,256 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 13:24:55,256 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [13] total 14 [2019-10-07 13:24:55,259 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 13:24:55,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 13:24:55,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2019-10-07 13:24:55,260 INFO L87 Difference]: Start difference. First operand 34 states and 39 transitions. Second operand 6 states. [2019-10-07 13:24:55,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:24:55,366 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2019-10-07 13:24:55,366 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 13:24:55,366 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2019-10-07 13:24:55,367 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:24:55,368 INFO L225 Difference]: With dead ends: 55 [2019-10-07 13:24:55,368 INFO L226 Difference]: Without dead ends: 37 [2019-10-07 13:24:55,369 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 59 SyntacticMatches, 3 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2019-10-07 13:24:55,370 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-10-07 13:24:55,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 35. [2019-10-07 13:24:55,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2019-10-07 13:24:55,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 40 transitions. [2019-10-07 13:24:55,380 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 40 transitions. Word has length 31 [2019-10-07 13:24:55,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:24:55,380 INFO L462 AbstractCegarLoop]: Abstraction has 35 states and 40 transitions. [2019-10-07 13:24:55,380 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 13:24:55,381 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 40 transitions. [2019-10-07 13:24:55,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2019-10-07 13:24:55,383 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:24:55,383 INFO L385 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, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:24:55,587 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:24:55,588 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:24:55,588 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:24:55,588 INFO L82 PathProgramCache]: Analyzing trace with hash -110051892, now seen corresponding path program 1 times [2019-10-07 13:24:55,588 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:24:55,589 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:24:55,589 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:24:55,589 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:24:55,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:24:55,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:24:55,792 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-07 13:24:55,792 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:24:55,792 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:24:55,793 INFO L95 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 [2019-10-07 13:24:55,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:24:55,974 INFO L256 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 5 conjunts are in the unsatisfiable core [2019-10-07 13:24:55,984 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:24:56,017 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-07 13:24:56,018 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:24:56,126 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2019-10-07 13:24:56,128 INFO L211 tionRefinementEngine]: Constructing automaton from 2 perfect and 1 imperfect interpolant sequences. [2019-10-07 13:24:56,128 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [10] total 12 [2019-10-07 13:24:56,128 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-10-07 13:24:56,129 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-10-07 13:24:56,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2019-10-07 13:24:56,131 INFO L87 Difference]: Start difference. First operand 35 states and 40 transitions. Second operand 7 states. [2019-10-07 13:24:56,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 13:24:56,224 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2019-10-07 13:24:56,224 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 13:24:56,225 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2019-10-07 13:24:56,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 13:24:56,228 INFO L225 Difference]: With dead ends: 60 [2019-10-07 13:24:56,228 INFO L226 Difference]: Without dead ends: 45 [2019-10-07 13:24:56,229 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 71 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2019-10-07 13:24:56,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-10-07 13:24:56,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 38. [2019-10-07 13:24:56,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-10-07 13:24:56,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 45 transitions. [2019-10-07 13:24:56,238 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 45 transitions. Word has length 38 [2019-10-07 13:24:56,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 13:24:56,238 INFO L462 AbstractCegarLoop]: Abstraction has 38 states and 45 transitions. [2019-10-07 13:24:56,239 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-10-07 13:24:56,239 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 45 transitions. [2019-10-07 13:24:56,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2019-10-07 13:24:56,240 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 13:24:56,240 INFO L385 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 13:24:56,444 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:24:56,445 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 13:24:56,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 13:24:56,445 INFO L82 PathProgramCache]: Analyzing trace with hash 688594833, now seen corresponding path program 1 times [2019-10-07 13:24:56,445 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 13:24:56,445 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:24:56,445 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:24:56,446 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 13:24:56,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 13:24:56,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:24:56,629 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 13:24:56,629 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 13:24:56,630 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 13:24:56,630 INFO L95 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 [2019-10-07 13:24:56,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 13:24:56,751 INFO L256 TraceCheckSpWp]: Trace formula consists of 240 conjuncts, 4 conjunts are in the unsatisfiable core [2019-10-07 13:24:56,754 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 13:24:56,782 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 13:24:56,782 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 13:24:56,830 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2019-10-07 13:24:56,831 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 13:24:56,863 INFO L162 IcfgInterpreter]: Started Sifa with 33 locations of interest [2019-10-07 13:24:56,863 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 13:24:56,869 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 13:24:56,876 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 13:24:56,877 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 13:24:57,001 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 27 for LOIs [2019-10-07 13:24:57,193 WARN L225 Elim1Store]: Array PQE input equivalent to false [2019-10-07 13:24:57,483 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 13:24:57,484 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:295) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.generateProof(TraceAbstractionRefinementEngine.java:177) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.executeStrategy(TraceAbstractionRefinementEngine.java:167) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:90) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.RefinementEngineFactory.runRefinementEngine(RefinementEngineFactory.java:133) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:436) 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:99) 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:99) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getInterpolantComputationStatus(IpTcStrategyModuleBase.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.tryExecuteInterpolantGenerator(TraceAbstractionRefinementEngine.java:287) ... 21 more [2019-10-07 13:24:57,490 INFO L168 Benchmark]: Toolchain (without parser) took 5095.48 ms. Allocated memory was 137.4 MB in the beginning and 250.6 MB in the end (delta: 113.2 MB). Free memory was 100.9 MB in the beginning and 201.6 MB in the end (delta: -100.7 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2019-10-07 13:24:57,491 INFO L168 Benchmark]: CDTParser took 1.22 ms. Allocated memory is still 137.4 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2019-10-07 13:24:57,492 INFO L168 Benchmark]: CACSL2BoogieTranslator took 606.07 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 100.7 MB in the beginning and 166.6 MB in the end (delta: -65.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2019-10-07 13:24:57,496 INFO L168 Benchmark]: Boogie Preprocessor took 73.28 ms. Allocated memory is still 201.3 MB. Free memory was 166.6 MB in the beginning and 162.9 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. [2019-10-07 13:24:57,497 INFO L168 Benchmark]: RCFGBuilder took 941.75 ms. Allocated memory is still 201.3 MB. Free memory was 162.9 MB in the beginning and 101.5 MB in the end (delta: 61.4 MB). Peak memory consumption was 61.4 MB. Max. memory is 7.1 GB. [2019-10-07 13:24:57,497 INFO L168 Benchmark]: TraceAbstraction took 3469.92 ms. Allocated memory was 201.3 MB in the beginning and 250.6 MB in the end (delta: 49.3 MB). Free memory was 100.8 MB in the beginning and 201.6 MB in the end (delta: -100.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-10-07 13:24:57,502 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.22 ms. Allocated memory is still 137.4 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 606.07 ms. Allocated memory was 137.4 MB in the beginning and 201.3 MB in the end (delta: 64.0 MB). Free memory was 100.7 MB in the beginning and 166.6 MB in the end (delta: -65.9 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 73.28 ms. Allocated memory is still 201.3 MB. Free memory was 166.6 MB in the beginning and 162.9 MB in the end (delta: 3.7 MB). Peak memory consumption was 3.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 941.75 ms. Allocated memory is still 201.3 MB. Free memory was 162.9 MB in the beginning and 101.5 MB in the end (delta: 61.4 MB). Peak memory consumption was 61.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3469.92 ms. Allocated memory was 201.3 MB in the beginning and 250.6 MB in the end (delta: 49.3 MB). Free memory was 100.8 MB in the beginning and 201.6 MB in the end (delta: -100.8 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:295) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...