/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/rule60_list2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:23:55,310 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:23:55,314 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:23:55,331 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:23:55,332 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:23:55,334 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:23:55,335 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:23:55,337 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:23:55,338 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:23:55,339 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:23:55,340 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:23:55,341 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:23:55,341 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:23:55,342 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:23:55,343 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:23:55,345 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:23:55,345 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:23:55,346 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:23:55,348 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:23:55,350 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:23:55,351 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:23:55,352 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:23:55,353 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:23:55,354 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:23:55,357 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 13:23:55,357 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 13:23:55,357 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 13:23:55,358 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 13:23:55,358 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 13:23:55,359 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 13:23:55,359 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 13:23:55,360 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 13:23:55,361 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 13:23:55,362 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 13:23:55,363 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 13:23:55,363 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 13:23:55,363 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 13:23:55,364 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 13:23:55,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:23:55,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:23:55,365 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:23:55,366 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:23:55,375 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:23:55,375 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:23:55,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:23:55,377 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:23:55,377 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:23:55,377 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:23:55,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:23:55,377 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:23:55,378 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:23:55,378 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:23:55,378 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:23:55,378 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:23:55,378 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:23:55,379 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:23:55,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:23:55,379 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:23:55,379 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:23:55,379 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:23:55,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:23:55,380 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:23:55,380 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:23:55,380 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:23:55,380 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:23:55,682 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:23:55,703 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:23:55,707 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:23:55,708 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:23:55,709 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:23:55,710 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list2.i [2020-07-07 13:23:55,782 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a331ba3a3/298f2d71bc2445469c42bac0331cabcf/FLAG0af482887 [2020-07-07 13:23:56,290 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:23:56,291 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/rule60_list2.i [2020-07-07 13:23:56,307 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a331ba3a3/298f2d71bc2445469c42bac0331cabcf/FLAG0af482887 [2020-07-07 13:23:56,589 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a331ba3a3/298f2d71bc2445469c42bac0331cabcf [2020-07-07 13:23:56,598 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:23:56,600 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:23:56,601 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:23:56,601 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:23:56,604 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:23:56,605 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:23:56" (1/1) ... [2020-07-07 13:23:56,608 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@65b2b8c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:56, skipping insertion in model container [2020-07-07 13:23:56,608 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:23:56" (1/1) ... [2020-07-07 13:23:56,616 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:23:56,652 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:23:57,096 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:23:57,103 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:23:57,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:23:57,226 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:23:57,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:57 WrapperNode [2020-07-07 13:23:57,226 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:23:57,227 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:23:57,227 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:23:57,228 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:23:57,241 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:57" (1/1) ... [2020-07-07 13:23:57,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:57" (1/1) ... [2020-07-07 13:23:57,256 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:57" (1/1) ... [2020-07-07 13:23:57,256 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:57" (1/1) ... [2020-07-07 13:23:57,269 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:57" (1/1) ... [2020-07-07 13:23:57,271 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:57" (1/1) ... [2020-07-07 13:23:57,275 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:57" (1/1) ... [2020-07-07 13:23:57,281 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:23:57,282 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:23:57,282 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:23:57,282 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:23:57,283 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:57" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:23:57,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:23:57,345 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:23:57,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-07-07 13:23:57,345 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2020-07-07 13:23:57,346 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2020-07-07 13:23:57,346 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-07-07 13:23:57,346 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2020-07-07 13:23:57,346 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:23:57,346 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:23:57,346 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-07-07 13:23:57,346 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-07-07 13:23:57,346 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-07-07 13:23:57,347 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-07-07 13:23:57,347 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-07-07 13:23:57,347 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-07-07 13:23:57,347 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-07-07 13:23:57,347 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-07-07 13:23:57,347 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-07-07 13:23:57,347 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-07-07 13:23:57,348 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-07-07 13:23:57,348 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-07-07 13:23:57,348 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-07-07 13:23:57,348 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-07-07 13:23:57,348 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-07-07 13:23:57,349 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-07-07 13:23:57,349 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-07-07 13:23:57,349 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-07-07 13:23:57,349 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-07-07 13:23:57,349 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-07-07 13:23:57,349 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-07-07 13:23:57,350 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-07-07 13:23:57,350 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-07-07 13:23:57,350 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-07-07 13:23:57,350 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-07-07 13:23:57,350 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-07-07 13:23:57,350 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-07-07 13:23:57,351 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-07-07 13:23:57,351 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-07-07 13:23:57,351 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-07-07 13:23:57,351 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-07-07 13:23:57,351 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-07-07 13:23:57,351 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-07-07 13:23:57,351 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-07-07 13:23:57,352 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-07-07 13:23:57,352 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-07-07 13:23:57,352 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-07-07 13:23:57,352 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-07-07 13:23:57,352 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-07-07 13:23:57,352 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-07 13:23:57,353 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-07-07 13:23:57,353 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-07-07 13:23:57,353 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-07-07 13:23:57,353 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-07-07 13:23:57,353 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-07-07 13:23:57,353 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-07-07 13:23:57,354 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-07-07 13:23:57,354 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-07-07 13:23:57,354 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-07-07 13:23:57,354 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-07-07 13:23:57,354 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-07-07 13:23:57,354 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-07-07 13:23:57,354 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-07-07 13:23:57,355 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-07-07 13:23:57,355 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-07-07 13:23:57,355 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-07-07 13:23:57,355 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-07-07 13:23:57,355 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-07-07 13:23:57,355 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-07-07 13:23:57,356 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-07-07 13:23:57,356 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-07-07 13:23:57,356 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-07-07 13:23:57,356 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-07-07 13:23:57,356 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-07-07 13:23:57,356 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-07-07 13:23:57,356 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-07-07 13:23:57,357 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-07-07 13:23:57,357 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-07-07 13:23:57,357 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-07-07 13:23:57,357 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-07-07 13:23:57,358 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-07-07 13:23:57,358 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-07-07 13:23:57,359 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-07-07 13:23:57,359 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-07-07 13:23:57,359 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-07-07 13:23:57,359 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-07-07 13:23:57,359 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-07-07 13:23:57,360 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-07-07 13:23:57,361 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-07-07 13:23:57,361 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-07-07 13:23:57,361 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-07-07 13:23:57,362 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-07-07 13:23:57,362 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-07-07 13:23:57,362 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-07-07 13:23:57,362 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-07-07 13:23:57,362 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-07-07 13:23:57,362 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-07-07 13:23:57,362 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-07-07 13:23:57,363 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-07-07 13:23:57,363 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-07-07 13:23:57,363 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-07-07 13:23:57,364 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-07-07 13:23:57,364 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-07-07 13:23:57,364 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-07-07 13:23:57,364 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-07-07 13:23:57,364 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-07-07 13:23:57,364 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-07-07 13:23:57,364 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-07-07 13:23:57,365 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-07-07 13:23:57,365 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-07-07 13:23:57,365 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-07-07 13:23:57,365 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-07-07 13:23:57,365 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 13:23:57,365 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-07 13:23:57,365 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-07 13:23:57,366 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 13:23:57,366 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-07 13:23:57,366 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2020-07-07 13:23:57,366 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-07 13:23:57,366 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2020-07-07 13:23:57,366 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2020-07-07 13:23:57,366 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2020-07-07 13:23:57,366 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2020-07-07 13:23:57,367 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2020-07-07 13:23:57,367 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2020-07-07 13:23:57,367 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2020-07-07 13:23:57,367 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2020-07-07 13:23:57,368 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2020-07-07 13:23:57,368 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2020-07-07 13:23:57,368 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2020-07-07 13:23:57,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 13:23:57,369 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2020-07-07 13:23:57,369 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2020-07-07 13:23:57,370 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-07-07 13:23:57,370 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2020-07-07 13:23:57,370 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:23:57,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:23:57,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 13:23:57,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-07 13:23:57,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:23:57,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 13:23:57,371 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 13:23:57,372 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 13:23:57,843 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:23:57,843 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-07 13:23:57,852 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:23:57 BoogieIcfgContainer [2020-07-07 13:23:57,852 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:23:57,853 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:23:57,854 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:23:57,857 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:23:57,858 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:23:56" (1/3) ... [2020-07-07 13:23:57,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@459037b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:23:57, skipping insertion in model container [2020-07-07 13:23:57,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:57" (2/3) ... [2020-07-07 13:23:57,861 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@459037b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:23:57, skipping insertion in model container [2020-07-07 13:23:57,861 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:23:57" (3/3) ... [2020-07-07 13:23:57,863 INFO L109 eAbstractionObserver]: Analyzing ICFG rule60_list2.i [2020-07-07 13:23:57,873 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:23:57,880 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:23:57,893 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:23:57,914 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:23:57,915 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:23:57,915 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:23:57,915 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:23:57,915 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:23:57,916 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:23:57,916 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:23:57,916 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:23:57,931 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states. [2020-07-07 13:23:57,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-07 13:23:57,942 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:23:57,943 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:23:57,943 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:23:57,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:23:57,950 INFO L82 PathProgramCache]: Analyzing trace with hash 1653885127, now seen corresponding path program 1 times [2020-07-07 13:23:57,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:23:57,959 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [378687199] [2020-07-07 13:23:57,959 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:23:58,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:58,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:58,297 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:23:58,297 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:23:58,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [378687199] [2020-07-07 13:23:58,302 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:23:58,302 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-07 13:23:58,303 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089059640] [2020-07-07 13:23:58,308 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 13:23:58,308 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:23:58,322 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 13:23:58,323 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-07 13:23:58,325 INFO L87 Difference]: Start difference. First operand 70 states. Second operand 7 states. [2020-07-07 13:23:58,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:23:58,830 INFO L93 Difference]: Finished difference Result 126 states and 151 transitions. [2020-07-07 13:23:58,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-07 13:23:58,832 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-07-07 13:23:58,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:23:58,844 INFO L225 Difference]: With dead ends: 126 [2020-07-07 13:23:58,844 INFO L226 Difference]: Without dead ends: 66 [2020-07-07 13:23:58,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2020-07-07 13:23:58,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-07-07 13:23:58,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 62. [2020-07-07 13:23:58,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-07-07 13:23:58,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 67 transitions. [2020-07-07 13:23:58,908 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 67 transitions. Word has length 21 [2020-07-07 13:23:58,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:23:58,909 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 67 transitions. [2020-07-07 13:23:58,909 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 13:23:58,909 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 67 transitions. [2020-07-07 13:23:58,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-07-07 13:23:58,913 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:23:58,913 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:23:58,913 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:23:58,914 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:23:58,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:23:58,914 INFO L82 PathProgramCache]: Analyzing trace with hash -1154270079, now seen corresponding path program 1 times [2020-07-07 13:23:58,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:23:58,915 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [356647660] [2020-07-07 13:23:58,915 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY Garbage collection #1: 37 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 37 to 73 Garbage collection #2: 73 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 73 to 139 Garbage collection #3: 139 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 139 to 277 Garbage collection #4: 277 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 277 to 547 Garbage collection #5: 547 nodes / 0 free / 0.0s / 0.0s total Resizing node table from 547 to 1093 [2020-07-07 13:24:01,137 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 13:24:01,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:01,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:01,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:01,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:01,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:24:02,136 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:24:02,136 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [356647660] [2020-07-07 13:24:02,136 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:24:02,137 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2020-07-07 13:24:02,137 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886746057] [2020-07-07 13:24:02,138 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-07-07 13:24:02,138 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:24:02,139 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-07-07 13:24:02,139 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2020-07-07 13:24:02,140 INFO L87 Difference]: Start difference. First operand 62 states and 67 transitions. Second operand 26 states. [2020-07-07 13:24:02,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:24:02,835 INFO L93 Difference]: Finished difference Result 122 states and 133 transitions. [2020-07-07 13:24:02,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-07 13:24:02,837 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 61 [2020-07-07 13:24:02,838 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:24:02,841 INFO L225 Difference]: With dead ends: 122 [2020-07-07 13:24:02,841 INFO L226 Difference]: Without dead ends: 64 [2020-07-07 13:24:02,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 227 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=125, Invalid=931, Unknown=0, NotChecked=0, Total=1056 [2020-07-07 13:24:02,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-07-07 13:24:02,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 60. [2020-07-07 13:24:02,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-07-07 13:24:02,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 64 transitions. [2020-07-07 13:24:02,873 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 64 transitions. Word has length 61 [2020-07-07 13:24:02,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:24:02,874 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 64 transitions. [2020-07-07 13:24:02,874 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-07-07 13:24:02,874 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 64 transitions. [2020-07-07 13:24:02,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-07-07 13:24:02,879 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:24:02,879 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:24:02,879 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:24:02,879 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:24:02,880 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:24:02,880 INFO L82 PathProgramCache]: Analyzing trace with hash 1531514875, now seen corresponding path program 1 times [2020-07-07 13:24:02,881 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:24:02,881 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1193160887] [2020-07-07 13:24:02,881 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:24:02,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:03,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:03,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:03,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:03,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:03,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:03,284 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-07-07 13:24:03,284 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:24:03,285 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1193160887] [2020-07-07 13:24:03,285 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:24:03,285 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-07-07 13:24:03,285 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [265115845] [2020-07-07 13:24:03,286 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-07 13:24:03,286 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:24:03,286 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-07 13:24:03,287 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-07-07 13:24:03,287 INFO L87 Difference]: Start difference. First operand 60 states and 64 transitions. Second operand 17 states. [2020-07-07 13:24:04,297 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:24:04,297 INFO L93 Difference]: Finished difference Result 106 states and 115 transitions. [2020-07-07 13:24:04,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-07 13:24:04,304 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 61 [2020-07-07 13:24:04,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:24:04,306 INFO L225 Difference]: With dead ends: 106 [2020-07-07 13:24:04,306 INFO L226 Difference]: Without dead ends: 91 [2020-07-07 13:24:04,307 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=150, Invalid=906, Unknown=0, NotChecked=0, Total=1056 [2020-07-07 13:24:04,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-07-07 13:24:04,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 76. [2020-07-07 13:24:04,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-07-07 13:24:04,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 83 transitions. [2020-07-07 13:24:04,331 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 83 transitions. Word has length 61 [2020-07-07 13:24:04,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:24:04,332 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 83 transitions. [2020-07-07 13:24:04,332 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-07 13:24:04,332 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 83 transitions. [2020-07-07 13:24:04,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-07-07 13:24:04,334 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:24:04,334 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:24:04,334 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 13:24:04,334 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:24:04,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:24:04,335 INFO L82 PathProgramCache]: Analyzing trace with hash 2098824736, now seen corresponding path program 1 times [2020-07-07 13:24:04,335 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:24:04,335 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375790848] [2020-07-07 13:24:04,335 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:24:04,345 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 13:24:04,346 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:442) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:277) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:184) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:144) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) 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:317) 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) [2020-07-07 13:24:04,351 INFO L168 Benchmark]: Toolchain (without parser) took 7750.91 ms. Allocated memory was 145.8 MB in the beginning and 281.0 MB in the end (delta: 135.3 MB). Free memory was 102.0 MB in the beginning and 236.9 MB in the end (delta: -134.9 MB). Peak memory consumption was 388.0 kB. Max. memory is 7.1 GB. [2020-07-07 13:24:04,352 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 145.8 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 13:24:04,353 INFO L168 Benchmark]: CACSL2BoogieTranslator took 625.86 ms. Allocated memory was 145.8 MB in the beginning and 203.9 MB in the end (delta: 58.2 MB). Free memory was 101.8 MB in the beginning and 169.6 MB in the end (delta: -67.8 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-07-07 13:24:04,354 INFO L168 Benchmark]: Boogie Preprocessor took 54.15 ms. Allocated memory is still 203.9 MB. Free memory was 169.6 MB in the beginning and 166.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-07-07 13:24:04,355 INFO L168 Benchmark]: RCFGBuilder took 570.31 ms. Allocated memory is still 203.9 MB. Free memory was 166.3 MB in the beginning and 119.4 MB in the end (delta: 46.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 7.1 GB. [2020-07-07 13:24:04,356 INFO L168 Benchmark]: TraceAbstraction took 6495.81 ms. Allocated memory was 203.9 MB in the beginning and 281.0 MB in the end (delta: 77.1 MB). Free memory was 119.4 MB in the beginning and 236.9 MB in the end (delta: -117.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-07 13:24:04,360 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 145.8 MB. Free memory was 121.1 MB in the beginning and 120.9 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 625.86 ms. Allocated memory was 145.8 MB in the beginning and 203.9 MB in the end (delta: 58.2 MB). Free memory was 101.8 MB in the beginning and 169.6 MB in the end (delta: -67.8 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 54.15 ms. Allocated memory is still 203.9 MB. Free memory was 169.6 MB in the beginning and 166.9 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 570.31 ms. Allocated memory is still 203.9 MB. Free memory was 166.3 MB in the beginning and 119.4 MB in the end (delta: 46.9 MB). Peak memory consumption was 46.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6495.81 ms. Allocated memory was 203.9 MB in the beginning and 281.0 MB in the end (delta: 77.1 MB). Free memory was 119.4 MB in the beginning and 236.9 MB in the end (delta: -117.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:442) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...