/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.c_1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:23:55,106 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:23:55,109 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:23:55,128 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:23:55,128 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:23:55,130 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:23:55,132 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:23:55,144 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:23:55,147 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:23:55,151 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:23:55,153 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:23:55,155 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:23:55,156 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:23:55,156 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:23:55,159 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:23:55,161 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:23:55,163 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:23:55,164 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:23:55,166 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:23:55,171 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:23:55,176 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:23:55,180 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:23:55,181 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:23:55,182 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:23:55,184 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 13:23:55,184 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 13:23:55,184 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 13:23:55,187 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 13:23:55,188 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 13:23:55,189 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 13:23:55,189 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 13:23:55,190 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 13:23:55,191 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 13:23:55,192 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 13:23:55,193 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 13:23:55,193 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 13:23:55,194 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 13:23:55,194 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 13:23:55,194 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:23:55,195 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:23:55,196 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:23:55,197 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 13:23:55,226 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:23:55,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:23:55,231 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:23:55,231 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:23:55,232 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:23:55,232 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:23:55,232 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:23:55,235 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:23:55,236 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:23:55,236 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:23:55,236 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:23:55,236 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:23:55,236 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:23:55,236 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:23:55,237 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:23:55,237 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:23:55,237 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:23:55,237 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:23:55,237 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:23:55,238 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:23:55,238 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:23:55,238 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:23:55,238 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:23:55,562 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:23:55,576 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:23:55,580 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:23:55,581 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:23:55,582 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:23:55,583 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i [2020-07-07 13:23:55,649 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/700c3d6cf/fa1601cdeda84d2b90d65f1688c30bd9/FLAGc7aaf297e [2020-07-07 13:23:56,177 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:23:56,178 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i [2020-07-07 13:23:56,193 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/700c3d6cf/fa1601cdeda84d2b90d65f1688c30bd9/FLAGc7aaf297e [2020-07-07 13:23:56,526 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/700c3d6cf/fa1601cdeda84d2b90d65f1688c30bd9 [2020-07-07 13:23:56,537 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:23:56,539 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:23:56,541 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:23:56,544 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:23:56,547 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:23:56,548 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:23:56" (1/1) ... [2020-07-07 13:23:56,552 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12f47918 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 13:23:56,552 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:23:56" (1/1) ... [2020-07-07 13:23:56,560 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:23:56,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:23:57,211 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:23:57,220 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:23:57,276 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:23:57,342 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:23:57,342 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:57 WrapperNode [2020-07-07 13:23:57,343 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:23:57,343 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:23:57,343 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:23:57,344 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:23:57,357 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 13:23:57,357 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 13:23:57,372 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 13:23:57,373 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 13:23:57,389 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 13:23:57,395 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 13:23:57,403 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 13:23:57,418 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:23:57,419 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:23:57,419 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:23:57,419 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:23:57,422 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 13:23:57,497 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:23:57,498 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:23:57,498 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-07-07 13:23:57,498 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2020-07-07 13:23:57,498 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2020-07-07 13:23:57,498 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-07-07 13:23:57,498 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2020-07-07 13:23:57,498 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:23:57,499 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:23:57,499 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-07-07 13:23:57,499 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-07-07 13:23:57,499 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-07-07 13:23:57,499 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-07-07 13:23:57,499 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-07-07 13:23:57,500 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-07-07 13:23:57,500 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-07-07 13:23:57,500 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-07-07 13:23:57,500 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-07-07 13:23:57,500 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-07-07 13:23:57,501 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-07-07 13:23:57,501 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-07-07 13:23:57,501 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-07-07 13:23:57,501 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-07-07 13:23:57,502 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-07-07 13:23:57,502 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-07-07 13:23:57,502 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-07-07 13:23:57,502 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-07-07 13:23:57,502 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-07-07 13:23:57,503 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-07-07 13:23:57,503 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-07-07 13:23:57,503 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-07-07 13:23:57,503 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-07-07 13:23:57,503 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-07-07 13:23:57,504 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-07-07 13:23:57,504 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-07-07 13:23:57,504 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-07-07 13:23:57,504 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-07-07 13:23:57,504 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-07-07 13:23:57,504 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-07-07 13:23:57,505 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-07-07 13:23:57,505 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-07-07 13:23:57,505 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-07-07 13:23:57,505 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-07-07 13:23:57,505 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-07-07 13:23:57,505 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-07-07 13:23:57,506 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-07-07 13:23:57,506 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-07-07 13:23:57,506 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-07-07 13:23:57,506 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-07 13:23:57,506 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-07-07 13:23:57,507 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-07-07 13:23:57,507 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-07-07 13:23:57,507 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-07-07 13:23:57,507 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-07-07 13:23:57,507 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-07-07 13:23:57,507 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-07-07 13:23:57,507 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-07-07 13:23:57,507 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-07-07 13:23:57,507 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-07-07 13:23:57,507 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-07-07 13:23:57,508 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-07-07 13:23:57,508 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-07-07 13:23:57,508 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-07-07 13:23:57,508 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-07-07 13:23:57,508 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-07-07 13:23:57,508 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-07-07 13:23:57,508 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-07-07 13:23:57,508 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-07-07 13:23:57,508 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-07-07 13:23:57,509 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-07-07 13:23:57,509 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-07-07 13:23:57,509 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-07-07 13:23:57,509 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-07-07 13:23:57,509 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-07-07 13:23:57,509 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-07-07 13:23:57,509 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-07-07 13:23:57,509 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-07-07 13:23:57,509 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-07-07 13:23:57,510 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-07-07 13:23:57,510 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-07-07 13:23:57,510 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-07-07 13:23:57,510 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-07-07 13:23:57,510 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-07-07 13:23:57,510 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-07-07 13:23:57,510 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-07-07 13:23:57,511 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-07-07 13:23:57,511 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-07-07 13:23:57,511 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-07-07 13:23:57,511 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-07-07 13:23:57,511 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-07-07 13:23:57,511 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-07-07 13:23:57,512 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-07-07 13:23:57,512 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-07-07 13:23:57,512 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-07-07 13:23:57,512 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-07-07 13:23:57,512 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-07-07 13:23:57,512 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-07-07 13:23:57,512 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-07-07 13:23:57,513 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-07-07 13:23:57,513 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-07-07 13:23:57,513 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-07-07 13:23:57,513 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-07-07 13:23:57,513 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-07-07 13:23:57,513 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-07-07 13:23:57,513 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-07-07 13:23:57,514 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-07-07 13:23:57,514 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-07-07 13:23:57,514 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-07-07 13:23:57,514 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-07-07 13:23:57,514 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-07-07 13:23:57,514 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-07-07 13:23:57,514 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 13:23:57,515 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-07 13:23:57,515 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-07 13:23:57,515 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 13:23:57,515 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-07 13:23:57,515 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2020-07-07 13:23:57,515 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-07 13:23:57,515 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2020-07-07 13:23:57,516 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2020-07-07 13:23:57,516 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2020-07-07 13:23:57,516 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2020-07-07 13:23:57,516 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2020-07-07 13:23:57,516 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2020-07-07 13:23:57,516 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2020-07-07 13:23:57,516 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2020-07-07 13:23:57,517 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2020-07-07 13:23:57,517 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2020-07-07 13:23:57,517 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2020-07-07 13:23:57,517 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 13:23:57,517 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2020-07-07 13:23:57,517 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2020-07-07 13:23:57,518 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-07-07 13:23:57,518 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2020-07-07 13:23:57,518 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:23:57,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:23:57,518 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-07 13:23:57,518 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-07 13:23:57,518 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:23:57,519 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 13:23:57,519 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 13:23:57,519 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 13:23:58,056 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:23:58,057 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-07 13:23:58,061 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:23:58 BoogieIcfgContainer [2020-07-07 13:23:58,061 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:23:58,062 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:23:58,062 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:23:58,066 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:23:58,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:23:56" (1/3) ... [2020-07-07 13:23:58,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@271b3b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:23:58, skipping insertion in model container [2020-07-07 13:23:58,067 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 13:23:58,068 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@271b3b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:23:58, skipping insertion in model container [2020-07-07 13:23:58,068 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:23:58" (3/3) ... [2020-07-07 13:23:58,069 INFO L109 eAbstractionObserver]: Analyzing ICFG rule60_list2.c_1.i [2020-07-07 13:23:58,080 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:23:58,088 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:23:58,102 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:23:58,125 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:23:58,125 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:23:58,125 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:23:58,126 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:23:58,126 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:23:58,126 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:23:58,126 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:23:58,126 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:23:58,142 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2020-07-07 13:23:58,152 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-07 13:23:58,152 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:23:58,153 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 13:23:58,154 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:23:58,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:23:58,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1490968618, now seen corresponding path program 1 times [2020-07-07 13:23:58,169 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:23:58,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994298386] [2020-07-07 13:23:58,170 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:23:58,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:58,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:58,496 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 13:23:58,497 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:23:58,499 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994298386] [2020-07-07 13:23:58,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:23:58,502 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-07 13:23:58,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583924765] [2020-07-07 13:23:58,508 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 13:23:58,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:23:58,545 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 13:23:58,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-07 13:23:58,548 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 7 states. [2020-07-07 13:23:59,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:23:59,020 INFO L93 Difference]: Finished difference Result 128 states and 157 transitions. [2020-07-07 13:23:59,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-07 13:23:59,023 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-07-07 13:23:59,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:23:59,036 INFO L225 Difference]: With dead ends: 128 [2020-07-07 13:23:59,037 INFO L226 Difference]: Without dead ends: 67 [2020-07-07 13:23:59,042 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 13:23:59,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-07-07 13:23:59,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2020-07-07 13:23:59,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-07-07 13:23:59,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2020-07-07 13:23:59,111 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 21 [2020-07-07 13:23:59,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:23:59,112 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2020-07-07 13:23:59,112 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 13:23:59,112 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2020-07-07 13:23:59,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-07-07 13:23:59,115 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:23:59,116 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 13:23:59,116 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:23:59,116 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:23:59,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:23:59,117 INFO L82 PathProgramCache]: Analyzing trace with hash -114203518, now seen corresponding path program 1 times [2020-07-07 13:23:59,117 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:23:59,118 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [786284861] [2020-07-07 13:23:59,118 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 / 0.001s / 0.001s total Resizing node table from 73 to 139 Garbage collection #3: 139 nodes / 0 free / 0.0s / 0.001s total Resizing node table from 139 to 277 Garbage collection #4: 277 nodes / 0 free / 0.001s / 0.002s total Resizing node table from 277 to 547 Garbage collection #5: 547 nodes / 0 free / 0.0s / 0.002s total Resizing node table from 547 to 1093 [2020-07-07 13:24:01,381 INFO L501 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-07-07 13:24:01,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:01,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:01,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:01,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:01,854 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 13:24:02,531 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:24:02,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [786284861] [2020-07-07 13:24:02,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:24:02,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [26] imperfect sequences [] total 26 [2020-07-07 13:24:02,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851944622] [2020-07-07 13:24:02,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-07-07 13:24:02,535 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:24:02,535 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-07-07 13:24:02,536 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=618, Unknown=0, NotChecked=0, Total=702 [2020-07-07 13:24:02,536 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand 26 states. [2020-07-07 13:24:03,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:24:03,412 INFO L93 Difference]: Finished difference Result 124 states and 138 transitions. [2020-07-07 13:24:03,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-07 13:24:03,412 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 61 [2020-07-07 13:24:03,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:24:03,415 INFO L225 Difference]: With dead ends: 124 [2020-07-07 13:24:03,415 INFO L226 Difference]: Without dead ends: 65 [2020-07-07 13:24:03,417 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 13:24:03,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-07-07 13:24:03,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 61. [2020-07-07 13:24:03,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-07-07 13:24:03,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2020-07-07 13:24:03,433 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 61 [2020-07-07 13:24:03,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:24:03,434 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2020-07-07 13:24:03,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-07-07 13:24:03,434 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2020-07-07 13:24:03,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-07-07 13:24:03,436 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:24:03,436 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 13:24:03,437 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:24:03,437 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:24:03,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:24:03,437 INFO L82 PathProgramCache]: Analyzing trace with hash -1723385860, now seen corresponding path program 1 times [2020-07-07 13:24:03,437 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:24:03,438 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [616517322] [2020-07-07 13:24:03,438 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:24:03,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:03,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:03,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:03,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:03,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:03,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:24:03,848 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 13:24:03,848 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:24:03,848 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [616517322] [2020-07-07 13:24:03,849 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:24:03,849 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-07-07 13:24:03,849 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572110988] [2020-07-07 13:24:03,850 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-07 13:24:03,850 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:24:03,850 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-07 13:24:03,851 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-07-07 13:24:03,851 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand 17 states. [2020-07-07 13:24:05,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:24:05,008 INFO L93 Difference]: Finished difference Result 108 states and 121 transitions. [2020-07-07 13:24:05,010 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-07-07 13:24:05,011 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 61 [2020-07-07 13:24:05,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:24:05,015 INFO L225 Difference]: With dead ends: 108 [2020-07-07 13:24:05,016 INFO L226 Difference]: Without dead ends: 105 [2020-07-07 13:24:05,018 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=150, Invalid=906, Unknown=0, NotChecked=0, Total=1056 [2020-07-07 13:24:05,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-07-07 13:24:05,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 88. [2020-07-07 13:24:05,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-07-07 13:24:05,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 101 transitions. [2020-07-07 13:24:05,057 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 101 transitions. Word has length 61 [2020-07-07 13:24:05,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:24:05,060 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 101 transitions. [2020-07-07 13:24:05,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-07 13:24:05,060 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 101 transitions. [2020-07-07 13:24:05,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-07-07 13:24:05,064 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:24:05,064 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 13:24:05,065 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 13:24:05,065 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:24:05,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:24:05,065 INFO L82 PathProgramCache]: Analyzing trace with hash -1814582916, now seen corresponding path program 1 times [2020-07-07 13:24:05,066 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:24:05,068 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2089404592] [2020-07-07 13:24:05,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:24:05,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 13:24:05,091 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 13:24:05,100 INFO L168 Benchmark]: Toolchain (without parser) took 8559.06 ms. Allocated memory was 146.3 MB in the beginning and 267.9 MB in the end (delta: 121.6 MB). Free memory was 103.9 MB in the beginning and 146.5 MB in the end (delta: -42.6 MB). Peak memory consumption was 79.1 MB. Max. memory is 7.1 GB. [2020-07-07 13:24:05,101 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 146.3 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-07 13:24:05,103 INFO L168 Benchmark]: CACSL2BoogieTranslator took 801.81 ms. Allocated memory was 146.3 MB in the beginning and 208.7 MB in the end (delta: 62.4 MB). Free memory was 103.7 MB in the beginning and 173.8 MB in the end (delta: -70.1 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. [2020-07-07 13:24:05,105 INFO L168 Benchmark]: Boogie Preprocessor took 75.36 ms. Allocated memory is still 208.7 MB. Free memory was 173.8 MB in the beginning and 170.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-07-07 13:24:05,106 INFO L168 Benchmark]: RCFGBuilder took 641.99 ms. Allocated memory is still 208.7 MB. Free memory was 170.4 MB in the beginning and 123.1 MB in the end (delta: 47.3 MB). Peak memory consumption was 47.3 MB. Max. memory is 7.1 GB. [2020-07-07 13:24:05,113 INFO L168 Benchmark]: TraceAbstraction took 7034.13 ms. Allocated memory was 208.7 MB in the beginning and 267.9 MB in the end (delta: 59.2 MB). Free memory was 123.1 MB in the beginning and 146.5 MB in the end (delta: -23.4 MB). Peak memory consumption was 35.9 MB. Max. memory is 7.1 GB. [2020-07-07 13:24:05,124 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 146.3 MB. Free memory was 122.9 MB in the beginning and 122.7 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 801.81 ms. Allocated memory was 146.3 MB in the beginning and 208.7 MB in the end (delta: 62.4 MB). Free memory was 103.7 MB in the beginning and 173.8 MB in the end (delta: -70.1 MB). Peak memory consumption was 21.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 75.36 ms. Allocated memory is still 208.7 MB. Free memory was 173.8 MB in the beginning and 170.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 641.99 ms. Allocated memory is still 208.7 MB. Free memory was 170.4 MB in the beginning and 123.1 MB in the end (delta: 47.3 MB). Peak memory consumption was 47.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 7034.13 ms. Allocated memory was 208.7 MB in the beginning and 267.9 MB in the end (delta: 59.2 MB). Free memory was 123.1 MB in the beginning and 146.5 MB in the end (delta: -23.4 MB). Peak memory consumption was 35.9 MB. 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...