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/ldv-regression/rule60_list2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-36ac518-m [2019-10-07 12:47:43,134 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-07 12:47:43,137 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-07 12:47:43,152 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-07 12:47:43,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-07 12:47:43,154 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-07 12:47:43,155 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-07 12:47:43,157 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-07 12:47:43,159 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-07 12:47:43,159 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-07 12:47:43,160 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-07 12:47:43,161 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-07 12:47:43,162 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-07 12:47:43,163 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-07 12:47:43,164 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-07 12:47:43,165 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-07 12:47:43,165 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-07 12:47:43,166 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-07 12:47:43,168 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-07 12:47:43,170 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-07 12:47:43,173 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-07 12:47:43,176 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-07 12:47:43,178 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-07 12:47:43,178 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-07 12:47:43,183 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-07 12:47:43,183 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-07 12:47:43,183 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-07 12:47:43,184 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-07 12:47:43,184 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-07 12:47:43,185 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-07 12:47:43,185 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-07 12:47:43,186 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-07 12:47:43,187 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-07 12:47:43,188 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-07 12:47:43,189 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-07 12:47:43,189 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-07 12:47:43,190 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-07 12:47:43,190 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-07 12:47:43,190 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-07 12:47:43,191 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-07 12:47:43,191 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-07 12:47:43,192 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 12:47:43,207 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-07 12:47:43,207 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-07 12:47:43,208 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-07 12:47:43,208 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-07 12:47:43,208 INFO L138 SettingsManager]: * Use SBE=true [2019-10-07 12:47:43,209 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-07 12:47:43,209 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-07 12:47:43,209 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-07 12:47:43,209 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-07 12:47:43,209 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-07 12:47:43,210 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-07 12:47:43,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-07 12:47:43,210 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-07 12:47:43,210 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-07 12:47:43,210 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-07 12:47:43,211 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-07 12:47:43,211 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-07 12:47:43,211 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-07 12:47:43,211 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-07 12:47:43,211 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-10-07 12:47:43,212 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-10-07 12:47:43,212 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-07 12:47:43,212 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-07 12:47:43,212 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-07 12:47:43,212 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-10-07 12:47:43,213 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-07 12:47:43,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-07 12:47:43,213 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-10-07 12:47:43,213 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 12:47:43,497 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-07 12:47:43,513 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-07 12:47:43,517 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-07 12:47:43,519 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-07 12:47:43,519 INFO L275 PluginConnector]: CDTParser initialized [2019-10-07 12:47:43,521 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list2.i [2019-10-07 12:47:43,595 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/caebe58c5/078db10622be477380328112cbb83db3/FLAG885cc479e [2019-10-07 12:47:44,105 INFO L306 CDTParser]: Found 1 translation units. [2019-10-07 12:47:44,106 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/rule60_list2.i [2019-10-07 12:47:44,115 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/caebe58c5/078db10622be477380328112cbb83db3/FLAG885cc479e [2019-10-07 12:47:44,411 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/caebe58c5/078db10622be477380328112cbb83db3 [2019-10-07 12:47:44,424 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-07 12:47:44,426 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-07 12:47:44,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-07 12:47:44,427 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-07 12:47:44,429 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-07 12:47:44,430 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:47:44" (1/1) ... [2019-10-07 12:47:44,433 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7fb0478c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:47:44, skipping insertion in model container [2019-10-07 12:47:44,433 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.10 12:47:44" (1/1) ... [2019-10-07 12:47:44,440 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-07 12:47:44,484 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-07 12:47:44,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 12:47:44,901 INFO L188 MainTranslator]: Completed pre-run [2019-10-07 12:47:44,973 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-07 12:47:45,053 INFO L192 MainTranslator]: Completed translation [2019-10-07 12:47:45,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:47:45 WrapperNode [2019-10-07 12:47:45,054 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-07 12:47:45,054 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-07 12:47:45,055 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-07 12:47:45,055 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-07 12:47:45,066 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:47:45" (1/1) ... [2019-10-07 12:47:45,066 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:47:45" (1/1) ... [2019-10-07 12:47:45,083 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:47:45" (1/1) ... [2019-10-07 12:47:45,083 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:47:45" (1/1) ... [2019-10-07 12:47:45,095 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:47:45" (1/1) ... [2019-10-07 12:47:45,098 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:47:45" (1/1) ... [2019-10-07 12:47:45,101 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:47:45" (1/1) ... [2019-10-07 12:47:45,107 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-07 12:47:45,108 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-07 12:47:45,108 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-07 12:47:45,108 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-07 12:47:45,109 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:47:45" (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 12:47:45,169 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-07 12:47:45,170 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-07 12:47:45,170 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2019-10-07 12:47:45,170 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2019-10-07 12:47:45,170 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2019-10-07 12:47:45,170 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2019-10-07 12:47:45,170 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2019-10-07 12:47:45,171 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-07 12:47:45,171 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-07 12:47:45,171 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2019-10-07 12:47:45,171 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2019-10-07 12:47:45,171 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2019-10-07 12:47:45,171 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2019-10-07 12:47:45,171 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2019-10-07 12:47:45,172 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2019-10-07 12:47:45,172 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2019-10-07 12:47:45,172 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2019-10-07 12:47:45,172 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2019-10-07 12:47:45,172 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2019-10-07 12:47:45,172 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2019-10-07 12:47:45,173 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2019-10-07 12:47:45,173 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2019-10-07 12:47:45,173 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2019-10-07 12:47:45,173 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2019-10-07 12:47:45,173 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2019-10-07 12:47:45,173 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2019-10-07 12:47:45,174 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2019-10-07 12:47:45,174 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2019-10-07 12:47:45,174 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2019-10-07 12:47:45,174 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2019-10-07 12:47:45,174 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2019-10-07 12:47:45,174 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2019-10-07 12:47:45,175 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2019-10-07 12:47:45,175 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2019-10-07 12:47:45,175 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2019-10-07 12:47:45,175 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2019-10-07 12:47:45,175 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2019-10-07 12:47:45,175 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2019-10-07 12:47:45,175 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2019-10-07 12:47:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2019-10-07 12:47:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2019-10-07 12:47:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2019-10-07 12:47:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2019-10-07 12:47:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2019-10-07 12:47:45,176 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2019-10-07 12:47:45,177 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2019-10-07 12:47:45,177 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2019-10-07 12:47:45,177 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2019-10-07 12:47:45,177 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-10-07 12:47:45,177 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2019-10-07 12:47:45,177 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2019-10-07 12:47:45,177 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2019-10-07 12:47:45,178 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2019-10-07 12:47:45,178 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2019-10-07 12:47:45,178 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2019-10-07 12:47:45,178 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2019-10-07 12:47:45,178 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2019-10-07 12:47:45,178 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2019-10-07 12:47:45,179 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2019-10-07 12:47:45,179 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2019-10-07 12:47:45,179 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2019-10-07 12:47:45,179 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2019-10-07 12:47:45,179 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2019-10-07 12:47:45,179 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2019-10-07 12:47:45,179 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2019-10-07 12:47:45,180 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2019-10-07 12:47:45,180 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2019-10-07 12:47:45,180 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2019-10-07 12:47:45,180 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2019-10-07 12:47:45,180 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2019-10-07 12:47:45,180 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2019-10-07 12:47:45,181 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2019-10-07 12:47:45,181 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2019-10-07 12:47:45,181 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2019-10-07 12:47:45,181 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2019-10-07 12:47:45,181 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2019-10-07 12:47:45,181 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2019-10-07 12:47:45,182 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2019-10-07 12:47:45,182 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2019-10-07 12:47:45,182 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2019-10-07 12:47:45,182 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2019-10-07 12:47:45,182 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2019-10-07 12:47:45,182 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2019-10-07 12:47:45,183 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2019-10-07 12:47:45,183 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2019-10-07 12:47:45,183 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2019-10-07 12:47:45,183 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2019-10-07 12:47:45,183 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2019-10-07 12:47:45,184 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2019-10-07 12:47:45,184 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2019-10-07 12:47:45,184 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2019-10-07 12:47:45,184 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2019-10-07 12:47:45,184 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2019-10-07 12:47:45,184 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2019-10-07 12:47:45,185 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2019-10-07 12:47:45,185 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2019-10-07 12:47:45,185 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2019-10-07 12:47:45,185 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2019-10-07 12:47:45,185 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2019-10-07 12:47:45,186 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2019-10-07 12:47:45,186 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2019-10-07 12:47:45,186 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2019-10-07 12:47:45,186 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2019-10-07 12:47:45,186 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2019-10-07 12:47:45,186 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2019-10-07 12:47:45,187 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2019-10-07 12:47:45,187 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2019-10-07 12:47:45,187 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2019-10-07 12:47:45,187 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2019-10-07 12:47:45,187 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2019-10-07 12:47:45,187 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2019-10-07 12:47:45,188 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-07 12:47:45,188 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-07 12:47:45,188 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-07 12:47:45,188 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-07 12:47:45,188 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-07 12:47:45,188 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2019-10-07 12:47:45,189 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-07 12:47:45,189 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2019-10-07 12:47:45,189 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2019-10-07 12:47:45,189 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2019-10-07 12:47:45,189 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2019-10-07 12:47:45,190 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2019-10-07 12:47:45,190 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2019-10-07 12:47:45,190 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2019-10-07 12:47:45,190 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2019-10-07 12:47:45,190 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2019-10-07 12:47:45,190 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2019-10-07 12:47:45,191 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2019-10-07 12:47:45,191 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-07 12:47:45,191 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2019-10-07 12:47:45,191 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2019-10-07 12:47:45,191 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2019-10-07 12:47:45,192 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2019-10-07 12:47:45,192 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-07 12:47:45,192 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-07 12:47:45,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-10-07 12:47:45,192 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-10-07 12:47:45,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-07 12:47:45,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-07 12:47:45,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-07 12:47:45,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-07 12:47:45,784 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-07 12:47:45,784 INFO L284 CfgBuilder]: Removed 0 assume(true) statements. [2019-10-07 12:47:45,785 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:47:45 BoogieIcfgContainer [2019-10-07 12:47:45,786 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-07 12:47:45,787 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-07 12:47:45,787 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-07 12:47:45,790 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-07 12:47:45,790 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.10 12:47:44" (1/3) ... [2019-10-07 12:47:45,791 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1016c25f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:47:45, skipping insertion in model container [2019-10-07 12:47:45,791 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.10 12:47:45" (2/3) ... [2019-10-07 12:47:45,792 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1016c25f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.10 12:47:45, skipping insertion in model container [2019-10-07 12:47:45,792 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.10 12:47:45" (3/3) ... [2019-10-07 12:47:45,794 INFO L109 eAbstractionObserver]: Analyzing ICFG rule60_list2.i [2019-10-07 12:47:45,803 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-07 12:47:45,811 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-07 12:47:45,823 INFO L249 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-07 12:47:45,845 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-10-07 12:47:45,845 INFO L374 AbstractCegarLoop]: Hoare is true [2019-10-07 12:47:45,846 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-07 12:47:45,846 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-07 12:47:45,846 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-07 12:47:45,846 INFO L378 AbstractCegarLoop]: Difference is false [2019-10-07 12:47:45,846 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-07 12:47:45,847 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-07 12:47:45,864 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2019-10-07 12:47:45,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-10-07 12:47:45,871 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 12:47:45,872 INFO L385 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 12:47:45,874 INFO L410 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 12:47:45,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 12:47:45,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1762364833, now seen corresponding path program 1 times [2019-10-07 12:47:45,889 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 12:47:45,889 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 12:47:45,890 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 12:47:45,890 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 12:47:45,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 12:47:46,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 12:47:46,139 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 12:47:46,140 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 12:47:46,141 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 12:47:46,142 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 12:47:46,146 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 12:47:46,160 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 12:47:46,161 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-07 12:47:46,164 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 6 states. [2019-10-07 12:47:46,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 12:47:46,276 INFO L93 Difference]: Finished difference Result 66 states and 83 transitions. [2019-10-07 12:47:46,276 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-07 12:47:46,277 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 12 [2019-10-07 12:47:46,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 12:47:46,287 INFO L225 Difference]: With dead ends: 66 [2019-10-07 12:47:46,288 INFO L226 Difference]: Without dead ends: 31 [2019-10-07 12:47:46,295 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2019-10-07 12:47:46,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2019-10-07 12:47:46,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2019-10-07 12:47:46,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-10-07 12:47:46,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2019-10-07 12:47:46,354 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 12 [2019-10-07 12:47:46,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 12:47:46,354 INFO L462 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2019-10-07 12:47:46,354 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 12:47:46,354 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2019-10-07 12:47:46,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2019-10-07 12:47:46,357 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 12:47:46,357 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 12:47:46,358 INFO L410 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 12:47:46,359 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 12:47:46,360 INFO L82 PathProgramCache]: Analyzing trace with hash 516237429, now seen corresponding path program 1 times [2019-10-07 12:47:46,360 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 12:47:46,360 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 12:47:46,360 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 12:47:46,360 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 12:47:46,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 12:47:46,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 12:47:46,550 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2019-10-07 12:47:46,550 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 12:47:46,550 INFO L211 tionRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-07 12:47:46,551 INFO L224 tionRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-07 12:47:46,552 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-07 12:47:46,553 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-07 12:47:46,553 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-07 12:47:46,553 INFO L87 Difference]: Start difference. First operand 31 states and 33 transitions. Second operand 6 states. [2019-10-07 12:47:46,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-07 12:47:46,675 INFO L93 Difference]: Finished difference Result 37 states and 39 transitions. [2019-10-07 12:47:46,675 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-10-07 12:47:46,675 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2019-10-07 12:47:46,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-07 12:47:46,676 INFO L225 Difference]: With dead ends: 37 [2019-10-07 12:47:46,676 INFO L226 Difference]: Without dead ends: 34 [2019-10-07 12:47:46,678 INFO L606 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2019-10-07 12:47:46,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-10-07 12:47:46,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2019-10-07 12:47:46,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-10-07 12:47:46,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 35 transitions. [2019-10-07 12:47:46,687 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 35 transitions. Word has length 31 [2019-10-07 12:47:46,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-07 12:47:46,689 INFO L462 AbstractCegarLoop]: Abstraction has 33 states and 35 transitions. [2019-10-07 12:47:46,689 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-07 12:47:46,689 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 35 transitions. [2019-10-07 12:47:46,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2019-10-07 12:47:46,690 INFO L377 BasicCegarLoop]: Found error trace [2019-10-07 12:47:46,690 INFO L385 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-07 12:47:46,690 INFO L410 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-07 12:47:46,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-07 12:47:46,691 INFO L82 PathProgramCache]: Analyzing trace with hash -1298848610, now seen corresponding path program 1 times [2019-10-07 12:47:46,691 INFO L150 tionRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2019-10-07 12:47:46,691 INFO L231 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019-10-07 12:47:46,692 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 12:47:46,692 INFO L117 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-07 12:47:46,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-07 12:47:46,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 12:47:47,382 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2019-10-07 12:47:47,382 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019-10-07 12:47:47,382 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2019-10-07 12:47:47,383 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 12:47:47,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-07 12:47:47,562 INFO L256 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 93 conjunts are in the unsatisfiable core [2019-10-07 12:47:47,579 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2019-10-07 12:47:48,134 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:48,138 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:48,543 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:48,544 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:48,754 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 12:47:48,754 INFO L322 TraceCheckSpWp]: Computing backward predicates... [2019-10-07 12:47:49,003 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:49,004 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:49,005 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:49,005 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:49,006 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:49,007 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:49,080 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:49,081 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:49,083 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:49,542 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:49,543 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:49,544 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:49,545 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:49,546 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:49,547 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:49,548 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:49,558 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:49,559 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:49,560 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:49,619 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:49,620 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:49,621 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:49,622 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:49,623 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:49,780 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:49,781 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:49,782 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:49,783 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:49,785 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:49,786 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:49,787 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:49,854 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:49,855 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:49,857 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:49,874 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:50,205 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-07 12:47:50,206 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:50,207 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:50,208 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:50,208 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:50,209 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:50,210 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:50,219 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:50,221 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:50,222 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:50,222 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:50,580 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:50,580 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:50,581 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:50,582 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-07 12:47:50,582 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:50,583 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:50,584 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:50,595 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:50,596 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-07 12:47:50,597 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:50,600 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:50,601 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:50,601 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:50,602 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:50,603 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:50,604 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:50,605 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:50,606 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-10-07 12:47:50,606 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:50,607 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:50,607 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:50,776 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:50,777 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:50,777 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 2 terms [2019-10-07 12:47:50,851 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-07 12:47:50,852 INFO L286 tionRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2019-10-07 12:47:50,881 INFO L162 IcfgInterpreter]: Started Sifa with 27 locations of interest [2019-10-07 12:47:50,881 INFO L169 IcfgInterpreter]: Building call graph [2019-10-07 12:47:50,887 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-10-07 12:47:50,895 INFO L179 IcfgInterpreter]: Starting interpretation [2019-10-07 12:47:50,896 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-10-07 12:47:51,201 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 61 for LOIs [2019-10-07 12:47:51,511 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2019-10-07 12:47:51,512 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 12:47:51,520 INFO L168 Benchmark]: Toolchain (without parser) took 7094.43 ms. Allocated memory was 146.8 MB in the beginning and 303.0 MB in the end (delta: 156.2 MB). Free memory was 103.8 MB in the beginning and 241.6 MB in the end (delta: -137.8 MB). Peak memory consumption was 18.4 MB. Max. memory is 7.1 GB. [2019-10-07 12:47:51,522 INFO L168 Benchmark]: CDTParser took 1.50 ms. Allocated memory is still 146.8 MB. Free memory was 123.2 MB in the beginning and 123.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2019-10-07 12:47:51,525 INFO L168 Benchmark]: CACSL2BoogieTranslator took 627.60 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 103.4 MB in the beginning and 168.5 MB in the end (delta: -65.1 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2019-10-07 12:47:51,525 INFO L168 Benchmark]: Boogie Preprocessor took 52.67 ms. Allocated memory is still 203.4 MB. Free memory was 168.5 MB in the beginning and 165.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2019-10-07 12:47:51,527 INFO L168 Benchmark]: RCFGBuilder took 678.36 ms. Allocated memory is still 203.4 MB. Free memory was 165.5 MB in the beginning and 113.7 MB in the end (delta: 51.9 MB). Peak memory consumption was 51.9 MB. Max. memory is 7.1 GB. [2019-10-07 12:47:51,529 INFO L168 Benchmark]: TraceAbstraction took 5731.41 ms. Allocated memory was 203.4 MB in the beginning and 303.0 MB in the end (delta: 99.6 MB). Free memory was 113.0 MB in the beginning and 241.6 MB in the end (delta: -128.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-10-07 12:47:51,537 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.50 ms. Allocated memory is still 146.8 MB. Free memory was 123.2 MB in the beginning and 123.0 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 627.60 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 103.4 MB in the beginning and 168.5 MB in the end (delta: -65.1 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 52.67 ms. Allocated memory is still 203.4 MB. Free memory was 168.5 MB in the beginning and 165.5 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 678.36 ms. Allocated memory is still 203.4 MB. Free memory was 165.5 MB in the beginning and 113.7 MB in the end (delta: 51.9 MB). Peak memory consumption was 51.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5731.41 ms. Allocated memory was 203.4 MB in the beginning and 303.0 MB in the end (delta: 99.6 MB). Free memory was 113.0 MB in the beginning and 241.6 MB in the end (delta: -128.6 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...