/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 0.1.25-3af5e1f [2020-09-04 16:39:56,183 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:39:56,187 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:39:56,215 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 16:39:56,215 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 16:39:56,216 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 16:39:56,218 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 16:39:56,220 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 16:39:56,222 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 16:39:56,223 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 16:39:56,224 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 16:39:56,226 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 16:39:56,226 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 16:39:56,227 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 16:39:56,228 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 16:39:56,230 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 16:39:56,231 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 16:39:56,232 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 16:39:56,234 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 16:39:56,236 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 16:39:56,237 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 16:39:56,239 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 16:39:56,240 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 16:39:56,241 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 16:39:56,244 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 16:39:56,244 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 16:39:56,244 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 16:39:56,245 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 16:39:56,246 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 16:39:56,247 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 16:39:56,247 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 16:39:56,248 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 16:39:56,249 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 16:39:56,250 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 16:39:56,251 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 16:39:56,251 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 16:39:56,252 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 16:39:56,252 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 16:39:56,252 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 16:39:56,253 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 16:39:56,254 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 16:39:56,255 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 16:39:56,267 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:39:56,268 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:39:56,269 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:39:56,269 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:39:56,269 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:39:56,270 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:39:56,270 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:39:56,270 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:39:56,270 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:39:56,271 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:39:56,271 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:39:56,271 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:39:56,271 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:39:56,271 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:39:56,272 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:39:56,272 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:39:56,272 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:39:56,272 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:39:56,272 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:39:56,273 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:39:56,273 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:39:56,273 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:39:56,273 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:39:56,752 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:39:56,772 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:39:56,776 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:39:56,778 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:39:56,778 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:39:56,779 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i [2020-09-04 16:39:56,864 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/145740997/1e751a4f67b84eb482333900371342d0/FLAGe9cc7e1a3 [2020-09-04 16:39:57,575 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:39:57,576 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/rule60_list2.c_1.i [2020-09-04 16:39:57,592 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/145740997/1e751a4f67b84eb482333900371342d0/FLAGe9cc7e1a3 [2020-09-04 16:39:57,799 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/145740997/1e751a4f67b84eb482333900371342d0 [2020-09-04 16:39:57,814 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:39:57,817 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:39:57,818 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:39:57,818 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:39:57,822 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:39:57,824 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:39:57" (1/1) ... [2020-09-04 16:39:57,831 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@779392b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:39:57, skipping insertion in model container [2020-09-04 16:39:57,831 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:39:57" (1/1) ... [2020-09-04 16:39:57,841 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:39:57,912 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:39:58,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:39:58,401 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:39:58,459 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:39:58,536 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:39:58,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:39:58 WrapperNode [2020-09-04 16:39:58,537 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:39:58,538 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:39:58,538 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:39:58,538 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:39:58,557 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:39:58" (1/1) ... [2020-09-04 16:39:58,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:39:58" (1/1) ... [2020-09-04 16:39:58,575 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:39:58" (1/1) ... [2020-09-04 16:39:58,576 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:39:58" (1/1) ... [2020-09-04 16:39:58,592 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:39:58" (1/1) ... [2020-09-04 16:39:58,594 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:39:58" (1/1) ... [2020-09-04 16:39:58,598 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:39:58" (1/1) ... [2020-09-04 16:39:58,605 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:39:58,606 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:39:58,606 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:39:58,606 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:39:58,607 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:39:58" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 16:39:58,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:39:58,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:39:58,692 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-09-04 16:39:58,692 INFO L138 BoogieDeclarations]: Found implementation of procedure __getMemory [2020-09-04 16:39:58,692 INFO L138 BoogieDeclarations]: Found implementation of procedure my_malloc [2020-09-04 16:39:58,692 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-09-04 16:39:58,692 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2020-09-04 16:39:58,692 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:39:58,692 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:39:58,693 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-09-04 16:39:58,693 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-09-04 16:39:58,693 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-09-04 16:39:58,693 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-09-04 16:39:58,693 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-09-04 16:39:58,694 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-09-04 16:39:58,694 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-09-04 16:39:58,694 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-09-04 16:39:58,694 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-09-04 16:39:58,694 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-09-04 16:39:58,695 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-09-04 16:39:58,695 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-09-04 16:39:58,695 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-09-04 16:39:58,695 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-09-04 16:39:58,696 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-09-04 16:39:58,696 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-09-04 16:39:58,696 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-09-04 16:39:58,696 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-09-04 16:39:58,696 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-09-04 16:39:58,696 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-09-04 16:39:58,697 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-09-04 16:39:58,697 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-09-04 16:39:58,697 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-09-04 16:39:58,697 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-09-04 16:39:58,697 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-09-04 16:39:58,697 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-09-04 16:39:58,698 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-09-04 16:39:58,698 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-09-04 16:39:58,698 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-09-04 16:39:58,698 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-09-04 16:39:58,698 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-09-04 16:39:58,698 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-09-04 16:39:58,699 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-09-04 16:39:58,699 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-09-04 16:39:58,699 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-09-04 16:39:58,699 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-09-04 16:39:58,699 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-09-04 16:39:58,699 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-09-04 16:39:58,699 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-09-04 16:39:58,700 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-09-04 16:39:58,700 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-09-04 16:39:58,700 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-09-04 16:39:58,700 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-09-04 16:39:58,700 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-09-04 16:39:58,700 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-09-04 16:39:58,701 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-09-04 16:39:58,701 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-09-04 16:39:58,701 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-09-04 16:39:58,701 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-09-04 16:39:58,701 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-09-04 16:39:58,701 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-09-04 16:39:58,701 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-09-04 16:39:58,702 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-09-04 16:39:58,702 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-09-04 16:39:58,702 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-09-04 16:39:58,702 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-09-04 16:39:58,702 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-09-04 16:39:58,702 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-09-04 16:39:58,703 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-09-04 16:39:58,703 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-09-04 16:39:58,703 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-09-04 16:39:58,703 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-09-04 16:39:58,703 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-09-04 16:39:58,703 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-09-04 16:39:58,704 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-09-04 16:39:58,704 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-09-04 16:39:58,704 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-09-04 16:39:58,704 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-09-04 16:39:58,704 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-09-04 16:39:58,704 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-09-04 16:39:58,705 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-09-04 16:39:58,705 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-09-04 16:39:58,705 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-09-04 16:39:58,705 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-09-04 16:39:58,705 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-09-04 16:39:58,706 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-09-04 16:39:58,706 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-09-04 16:39:58,706 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-09-04 16:39:58,706 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-09-04 16:39:58,706 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-09-04 16:39:58,706 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-09-04 16:39:58,706 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-09-04 16:39:58,707 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-09-04 16:39:58,707 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-09-04 16:39:58,707 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-09-04 16:39:58,707 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-09-04 16:39:58,707 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-09-04 16:39:58,707 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-09-04 16:39:58,708 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-09-04 16:39:58,708 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-09-04 16:39:58,708 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-09-04 16:39:58,708 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-09-04 16:39:58,708 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-09-04 16:39:58,708 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-09-04 16:39:58,709 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-09-04 16:39:58,709 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-09-04 16:39:58,709 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-09-04 16:39:58,709 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-09-04 16:39:58,709 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-09-04 16:39:58,710 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-09-04 16:39:58,710 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-09-04 16:39:58,710 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-09-04 16:39:58,710 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 16:39:58,710 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-04 16:39:58,710 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-04 16:39:58,711 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 16:39:58,711 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-04 16:39:58,711 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2020-09-04 16:39:58,711 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-04 16:39:58,711 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2020-09-04 16:39:58,712 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2020-09-04 16:39:58,712 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2020-09-04 16:39:58,712 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2020-09-04 16:39:58,712 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2020-09-04 16:39:58,712 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2020-09-04 16:39:58,712 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2020-09-04 16:39:58,713 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2020-09-04 16:39:58,713 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2020-09-04 16:39:58,713 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2020-09-04 16:39:58,713 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2020-09-04 16:39:58,713 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 16:39:58,713 INFO L130 BoogieDeclarations]: Found specification of procedure __getMemory [2020-09-04 16:39:58,714 INFO L130 BoogieDeclarations]: Found specification of procedure my_malloc [2020-09-04 16:39:58,714 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-09-04 16:39:58,714 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2020-09-04 16:39:58,714 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:39:58,714 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:39:58,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-04 16:39:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-04 16:39:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:39:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 16:39:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 16:39:58,715 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 16:39:59,279 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:39:59,279 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-04 16:39:59,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:39:59 BoogieIcfgContainer [2020-09-04 16:39:59,285 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:39:59,287 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:39:59,287 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:39:59,291 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:39:59,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:39:57" (1/3) ... [2020-09-04 16:39:59,293 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5af09583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:39:59, skipping insertion in model container [2020-09-04 16:39:59,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:39:58" (2/3) ... [2020-09-04 16:39:59,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5af09583 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:39:59, skipping insertion in model container [2020-09-04 16:39:59,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:39:59" (3/3) ... [2020-09-04 16:39:59,297 INFO L109 eAbstractionObserver]: Analyzing ICFG rule60_list2.c_1.i [2020-09-04 16:39:59,310 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:39:59,321 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 16:39:59,346 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 16:39:59,379 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:39:59,379 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:39:59,379 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:39:59,379 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:39:59,379 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:39:59,380 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:39:59,380 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:39:59,380 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:39:59,401 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states. [2020-09-04 16:39:59,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-04 16:39:59,415 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:39:59,416 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] [2020-09-04 16:39:59,417 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:39:59,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:39:59,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1490968618, now seen corresponding path program 1 times [2020-09-04 16:39:59,438 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:39:59,439 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [429743717] [2020-09-04 16:39:59,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:39:59,536 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:39:59,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:59,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:39:59,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:59,823 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:39:59,827 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [429743717] [2020-09-04 16:39:59,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:39:59,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 16:39:59,831 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518098684] [2020-09-04 16:39:59,836 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 16:39:59,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:39:59,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 16:39:59,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-04 16:39:59,869 INFO L87 Difference]: Start difference. First operand 71 states. Second operand 7 states. [2020-09-04 16:40:00,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:40:00,434 INFO L93 Difference]: Finished difference Result 128 states and 157 transitions. [2020-09-04 16:40:00,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-04 16:40:00,437 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-09-04 16:40:00,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:40:00,454 INFO L225 Difference]: With dead ends: 128 [2020-09-04 16:40:00,454 INFO L226 Difference]: Without dead ends: 67 [2020-09-04 16:40:00,460 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 [2020-09-04 16:40:00,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-09-04 16:40:00,530 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 63. [2020-09-04 16:40:00,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-04 16:40:00,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2020-09-04 16:40:00,537 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 21 [2020-09-04 16:40:00,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:40:00,538 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2020-09-04 16:40:00,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 16:40:00,538 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2020-09-04 16:40:00,541 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-04 16:40:00,542 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:40:00,542 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] [2020-09-04 16:40:00,543 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:40:00,543 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:40:00,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:40:00,543 INFO L82 PathProgramCache]: Analyzing trace with hash -114203518, now seen corresponding path program 1 times [2020-09-04 16:40:00,544 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:40:00,544 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [20127308] [2020-09-04 16:40:00,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:40:00,550 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:40:00,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:00,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:40:00,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:00,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 16:40:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:00,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:40:00,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:00,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 16:40:00,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:00,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:40:00,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:00,869 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-04 16:40:00,870 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [20127308] [2020-09-04 16:40:00,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:40:00,870 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 16:40:00,870 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1448952769] [2020-09-04 16:40:00,872 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 16:40:00,872 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:40:00,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 16:40:00,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 16:40:00,873 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand 9 states. [2020-09-04 16:40:01,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:40:01,205 INFO L93 Difference]: Finished difference Result 99 states and 112 transitions. [2020-09-04 16:40:01,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-04 16:40:01,205 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-09-04 16:40:01,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:40:01,208 INFO L225 Difference]: With dead ends: 99 [2020-09-04 16:40:01,208 INFO L226 Difference]: Without dead ends: 73 [2020-09-04 16:40:01,211 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-09-04 16:40:01,212 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-04 16:40:01,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 69. [2020-09-04 16:40:01,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-04 16:40:01,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2020-09-04 16:40:01,231 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 61 [2020-09-04 16:40:01,232 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:40:01,232 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2020-09-04 16:40:01,232 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 16:40:01,232 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2020-09-04 16:40:01,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-04 16:40:01,234 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:40:01,234 INFO L422 BasicCegarLoop]: trace histogram [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, 1] [2020-09-04 16:40:01,235 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 16:40:01,235 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:40:01,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:40:01,236 INFO L82 PathProgramCache]: Analyzing trace with hash -577094017, now seen corresponding path program 1 times [2020-09-04 16:40:01,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:40:01,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1142333830] [2020-09-04 16:40:01,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:40:01,241 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:40:01,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:01,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:40:01,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:01,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 16:40:01,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:01,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:40:01,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:01,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 16:40:01,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:01,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:40:01,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:01,597 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-04 16:40:01,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1142333830] [2020-09-04 16:40:01,598 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:40:01,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 16:40:01,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [411625447] [2020-09-04 16:40:01,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 16:40:01,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:40:01,599 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 16:40:01,600 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 16:40:01,600 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand 9 states. [2020-09-04 16:40:01,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:40:01,884 INFO L93 Difference]: Finished difference Result 102 states and 115 transitions. [2020-09-04 16:40:01,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-04 16:40:01,885 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 61 [2020-09-04 16:40:01,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:40:01,887 INFO L225 Difference]: With dead ends: 102 [2020-09-04 16:40:01,887 INFO L226 Difference]: Without dead ends: 65 [2020-09-04 16:40:01,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-09-04 16:40:01,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-09-04 16:40:01,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 61. [2020-09-04 16:40:01,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-04 16:40:01,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2020-09-04 16:40:01,904 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 61 [2020-09-04 16:40:01,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:40:01,904 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2020-09-04 16:40:01,905 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 16:40:01,905 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2020-09-04 16:40:01,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-04 16:40:01,906 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:40:01,907 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] [2020-09-04 16:40:01,907 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 16:40:01,907 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:40:01,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:40:01,908 INFO L82 PathProgramCache]: Analyzing trace with hash -1723385860, now seen corresponding path program 1 times [2020-09-04 16:40:01,908 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:40:01,908 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246646663] [2020-09-04 16:40:01,908 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:40:01,913 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:40:01,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:02,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:40:02,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:02,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 16:40:02,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:02,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:40:02,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:02,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 16:40:02,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:02,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:40:02,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:02,359 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-04 16:40:02,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246646663] [2020-09-04 16:40:02,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:40:02,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-09-04 16:40:02,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [479583952] [2020-09-04 16:40:02,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-04 16:40:02,362 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:40:02,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-04 16:40:02,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-09-04 16:40:02,363 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand 17 states. [2020-09-04 16:40:03,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:40:03,569 INFO L93 Difference]: Finished difference Result 108 states and 121 transitions. [2020-09-04 16:40:03,570 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-09-04 16:40:03,570 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 61 [2020-09-04 16:40:03,571 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:40:03,573 INFO L225 Difference]: With dead ends: 108 [2020-09-04 16:40:03,573 INFO L226 Difference]: Without dead ends: 105 [2020-09-04 16:40:03,574 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 [2020-09-04 16:40:03,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-09-04 16:40:03,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 88. [2020-09-04 16:40:03,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-09-04 16:40:03,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 101 transitions. [2020-09-04 16:40:03,599 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 101 transitions. Word has length 61 [2020-09-04 16:40:03,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:40:03,600 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 101 transitions. [2020-09-04 16:40:03,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-04 16:40:03,600 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 101 transitions. [2020-09-04 16:40:03,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-04 16:40:03,602 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:40:03,603 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] [2020-09-04 16:40:03,603 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 16:40:03,603 INFO L427 AbstractCegarLoop]: === Iteration 5 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:40:03,604 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:40:03,604 INFO L82 PathProgramCache]: Analyzing trace with hash -1814582916, now seen corresponding path program 1 times [2020-09-04 16:40:03,604 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:40:03,604 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [833951787] [2020-09-04 16:40:03,605 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:40:03,609 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:40:03,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:03,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:40:03,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:03,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 16:40:03,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:03,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:40:03,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:03,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 16:40:03,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:03,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:40:03,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:03,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-04 16:40:03,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:03,991 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-04 16:40:03,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [833951787] [2020-09-04 16:40:03,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:40:03,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-09-04 16:40:03,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338706306] [2020-09-04 16:40:03,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-04 16:40:03,993 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:40:03,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-04 16:40:03,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-09-04 16:40:03,994 INFO L87 Difference]: Start difference. First operand 88 states and 101 transitions. Second operand 18 states. [2020-09-04 16:40:05,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:40:05,137 INFO L93 Difference]: Finished difference Result 113 states and 129 transitions. [2020-09-04 16:40:05,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-04 16:40:05,138 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 70 [2020-09-04 16:40:05,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:40:05,140 INFO L225 Difference]: With dead ends: 113 [2020-09-04 16:40:05,140 INFO L226 Difference]: Without dead ends: 104 [2020-09-04 16:40:05,142 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=173, Invalid=949, Unknown=0, NotChecked=0, Total=1122 [2020-09-04 16:40:05,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2020-09-04 16:40:05,165 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 94. [2020-09-04 16:40:05,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 94 states. [2020-09-04 16:40:05,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 107 transitions. [2020-09-04 16:40:05,168 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 107 transitions. Word has length 70 [2020-09-04 16:40:05,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:40:05,168 INFO L479 AbstractCegarLoop]: Abstraction has 94 states and 107 transitions. [2020-09-04 16:40:05,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-04 16:40:05,169 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 107 transitions. [2020-09-04 16:40:05,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-04 16:40:05,170 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:40:05,170 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, 1] [2020-09-04 16:40:05,171 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 16:40:05,171 INFO L427 AbstractCegarLoop]: === Iteration 6 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:40:05,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:40:05,171 INFO L82 PathProgramCache]: Analyzing trace with hash 983151375, now seen corresponding path program 1 times [2020-09-04 16:40:05,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:40:05,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [845378233] [2020-09-04 16:40:05,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:40:05,176 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:40:05,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:05,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:40:05,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:05,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 16:40:05,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:05,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:40:05,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:05,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 16:40:05,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:05,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:40:05,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:05,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-04 16:40:05,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:05,679 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-04 16:40:05,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [845378233] [2020-09-04 16:40:05,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:40:05,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-09-04 16:40:05,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803990819] [2020-09-04 16:40:05,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-04 16:40:05,683 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:40:05,683 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-04 16:40:05,684 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=459, Unknown=0, NotChecked=0, Total=506 [2020-09-04 16:40:05,684 INFO L87 Difference]: Start difference. First operand 94 states and 107 transitions. Second operand 23 states. [2020-09-04 16:40:07,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:40:07,567 INFO L93 Difference]: Finished difference Result 112 states and 129 transitions. [2020-09-04 16:40:07,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-04 16:40:07,568 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 71 [2020-09-04 16:40:07,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:40:07,570 INFO L225 Difference]: With dead ends: 112 [2020-09-04 16:40:07,570 INFO L226 Difference]: Without dead ends: 105 [2020-09-04 16:40:07,572 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=210, Invalid=1682, Unknown=0, NotChecked=0, Total=1892 [2020-09-04 16:40:07,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-09-04 16:40:07,592 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 103. [2020-09-04 16:40:07,592 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 103 states. [2020-09-04 16:40:07,593 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 114 transitions. [2020-09-04 16:40:07,594 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 114 transitions. Word has length 71 [2020-09-04 16:40:07,594 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:40:07,595 INFO L479 AbstractCegarLoop]: Abstraction has 103 states and 114 transitions. [2020-09-04 16:40:07,595 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-04 16:40:07,595 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 114 transitions. [2020-09-04 16:40:07,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-04 16:40:07,597 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:40:07,597 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:40:07,597 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 16:40:07,597 INFO L427 AbstractCegarLoop]: === Iteration 7 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:40:07,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:40:07,598 INFO L82 PathProgramCache]: Analyzing trace with hash -1660138148, now seen corresponding path program 1 times [2020-09-04 16:40:07,598 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:40:07,599 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [587366179] [2020-09-04 16:40:07,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:40:07,602 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:40:07,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:07,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:40:07,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:07,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 16:40:07,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:07,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:40:07,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:07,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 16:40:07,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:07,891 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:40:07,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:07,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-04 16:40:07,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:07,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-04 16:40:07,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:08,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-04 16:40:08,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:08,097 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-04 16:40:08,097 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [587366179] [2020-09-04 16:40:08,098 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:40:08,098 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [24] imperfect sequences [] total 24 [2020-09-04 16:40:08,098 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394250814] [2020-09-04 16:40:08,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-09-04 16:40:08,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:40:08,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-09-04 16:40:08,100 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=501, Unknown=0, NotChecked=0, Total=552 [2020-09-04 16:40:08,100 INFO L87 Difference]: Start difference. First operand 103 states and 114 transitions. Second operand 24 states. [2020-09-04 16:40:09,878 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:40:09,879 INFO L93 Difference]: Finished difference Result 118 states and 130 transitions. [2020-09-04 16:40:09,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-04 16:40:09,879 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 85 [2020-09-04 16:40:09,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:40:09,883 INFO L225 Difference]: With dead ends: 118 [2020-09-04 16:40:09,883 INFO L226 Difference]: Without dead ends: 113 [2020-09-04 16:40:09,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=232, Invalid=1748, Unknown=0, NotChecked=0, Total=1980 [2020-09-04 16:40:09,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-09-04 16:40:09,906 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 112. [2020-09-04 16:40:09,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-09-04 16:40:09,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 123 transitions. [2020-09-04 16:40:09,908 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 123 transitions. Word has length 85 [2020-09-04 16:40:09,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:40:09,908 INFO L479 AbstractCegarLoop]: Abstraction has 112 states and 123 transitions. [2020-09-04 16:40:09,908 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-09-04 16:40:09,908 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 123 transitions. [2020-09-04 16:40:09,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-04 16:40:09,910 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:40:09,911 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:40:09,911 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 16:40:09,911 INFO L427 AbstractCegarLoop]: === Iteration 8 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:40:09,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:40:09,912 INFO L82 PathProgramCache]: Analyzing trace with hash 1173492322, now seen corresponding path program 2 times [2020-09-04 16:40:09,912 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:40:09,912 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1798214797] [2020-09-04 16:40:09,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:40:09,916 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:40:09,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:10,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:40:10,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:10,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 16:40:10,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:10,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:40:10,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:10,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 16:40:10,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:10,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:40:10,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:10,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-04 16:40:10,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:10,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-04 16:40:10,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:10,126 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-04 16:40:10,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:10,167 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-04 16:40:10,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1798214797] [2020-09-04 16:40:10,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:40:10,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-09-04 16:40:10,168 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832685193] [2020-09-04 16:40:10,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-04 16:40:10,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:40:10,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-04 16:40:10,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-04 16:40:10,169 INFO L87 Difference]: Start difference. First operand 112 states and 123 transitions. Second operand 10 states. [2020-09-04 16:40:10,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:40:10,766 INFO L93 Difference]: Finished difference Result 127 states and 137 transitions. [2020-09-04 16:40:10,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 16:40:10,767 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 85 [2020-09-04 16:40:10,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:40:10,769 INFO L225 Difference]: With dead ends: 127 [2020-09-04 16:40:10,769 INFO L226 Difference]: Without dead ends: 111 [2020-09-04 16:40:10,769 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=63, Invalid=177, Unknown=0, NotChecked=0, Total=240 [2020-09-04 16:40:10,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-09-04 16:40:10,809 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2020-09-04 16:40:10,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-09-04 16:40:10,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 121 transitions. [2020-09-04 16:40:10,812 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 121 transitions. Word has length 85 [2020-09-04 16:40:10,812 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:40:10,812 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 121 transitions. [2020-09-04 16:40:10,812 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-04 16:40:10,812 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 121 transitions. [2020-09-04 16:40:10,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-04 16:40:10,820 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:40:10,820 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:40:10,820 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 16:40:10,821 INFO L427 AbstractCegarLoop]: === Iteration 9 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:40:10,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:40:10,821 INFO L82 PathProgramCache]: Analyzing trace with hash 2046230471, now seen corresponding path program 1 times [2020-09-04 16:40:10,821 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:40:10,822 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858475118] [2020-09-04 16:40:10,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:40:10,826 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:40:10,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:10,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:40:10,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:10,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 16:40:10,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:11,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:40:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:11,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 16:40:11,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:11,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:40:11,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:11,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-04 16:40:11,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:11,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-04 16:40:11,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:11,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-04 16:40:11,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:11,394 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 9 proven. 6 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-04 16:40:11,395 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [858475118] [2020-09-04 16:40:11,395 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:40:11,395 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-09-04 16:40:11,395 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500097299] [2020-09-04 16:40:11,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-04 16:40:11,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:40:11,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-04 16:40:11,398 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=459, Unknown=0, NotChecked=0, Total=506 [2020-09-04 16:40:11,398 INFO L87 Difference]: Start difference. First operand 111 states and 121 transitions. Second operand 23 states. [2020-09-04 16:40:13,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:40:13,257 INFO L93 Difference]: Finished difference Result 129 states and 139 transitions. [2020-09-04 16:40:13,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-04 16:40:13,257 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 86 [2020-09-04 16:40:13,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:40:13,259 INFO L225 Difference]: With dead ends: 129 [2020-09-04 16:40:13,259 INFO L226 Difference]: Without dead ends: 112 [2020-09-04 16:40:13,260 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 232 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=214, Invalid=1766, Unknown=0, NotChecked=0, Total=1980 [2020-09-04 16:40:13,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-04 16:40:13,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 111. [2020-09-04 16:40:13,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 111 states. [2020-09-04 16:40:13,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 120 transitions. [2020-09-04 16:40:13,278 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 120 transitions. Word has length 86 [2020-09-04 16:40:13,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:40:13,279 INFO L479 AbstractCegarLoop]: Abstraction has 111 states and 120 transitions. [2020-09-04 16:40:13,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-04 16:40:13,279 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 120 transitions. [2020-09-04 16:40:13,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-04 16:40:13,281 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:40:13,281 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:40:13,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 16:40:13,281 INFO L427 AbstractCegarLoop]: === Iteration 10 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:40:13,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:40:13,282 INFO L82 PathProgramCache]: Analyzing trace with hash -305538175, now seen corresponding path program 2 times [2020-09-04 16:40:13,282 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:40:13,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227911421] [2020-09-04 16:40:13,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:40:13,286 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:40:13,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:13,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:40:13,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:13,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 16:40:13,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:13,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:40:13,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:13,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 16:40:13,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:13,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:40:13,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:13,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-04 16:40:13,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:13,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2020-09-04 16:40:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:13,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2020-09-04 16:40:13,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:13,674 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-04 16:40:13,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227911421] [2020-09-04 16:40:13,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:40:13,675 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-09-04 16:40:13,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [672606580] [2020-09-04 16:40:13,675 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-04 16:40:13,676 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:40:13,676 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-04 16:40:13,676 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2020-09-04 16:40:13,676 INFO L87 Difference]: Start difference. First operand 111 states and 120 transitions. Second operand 19 states. [2020-09-04 16:40:15,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:40:15,187 INFO L93 Difference]: Finished difference Result 144 states and 154 transitions. [2020-09-04 16:40:15,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-04 16:40:15,188 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 86 [2020-09-04 16:40:15,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:40:15,190 INFO L225 Difference]: With dead ends: 144 [2020-09-04 16:40:15,190 INFO L226 Difference]: Without dead ends: 131 [2020-09-04 16:40:15,191 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 279 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=253, Invalid=1469, Unknown=0, NotChecked=0, Total=1722 [2020-09-04 16:40:15,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-09-04 16:40:15,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 110. [2020-09-04 16:40:15,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 110 states. [2020-09-04 16:40:15,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 118 transitions. [2020-09-04 16:40:15,208 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 118 transitions. Word has length 86 [2020-09-04 16:40:15,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:40:15,208 INFO L479 AbstractCegarLoop]: Abstraction has 110 states and 118 transitions. [2020-09-04 16:40:15,208 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-04 16:40:15,208 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 118 transitions. [2020-09-04 16:40:15,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-09-04 16:40:15,209 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:40:15,209 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1] [2020-09-04 16:40:15,210 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 16:40:15,210 INFO L427 AbstractCegarLoop]: === Iteration 11 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:40:15,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:40:15,210 INFO L82 PathProgramCache]: Analyzing trace with hash -1959566780, now seen corresponding path program 1 times [2020-09-04 16:40:15,210 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:40:15,211 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270482987] [2020-09-04 16:40:15,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:40:15,213 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:40:15,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:15,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:40:15,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:15,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2020-09-04 16:40:15,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:15,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:40:15,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:15,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2020-09-04 16:40:15,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:15,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-09-04 16:40:15,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:15,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2020-09-04 16:40:15,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:15,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-04 16:40:15,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:15,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2020-09-04 16:40:15,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:15,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2020-09-04 16:40:15,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:40:15,636 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-04 16:40:15,636 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270482987] [2020-09-04 16:40:15,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:40:15,637 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-09-04 16:40:15,637 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44266899] [2020-09-04 16:40:15,639 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-04 16:40:15,640 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:40:15,640 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-04 16:40:15,641 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2020-09-04 16:40:15,641 INFO L87 Difference]: Start difference. First operand 110 states and 118 transitions. Second operand 19 states. [2020-09-04 16:40:17,156 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:40:17,156 INFO L93 Difference]: Finished difference Result 137 states and 144 transitions. [2020-09-04 16:40:17,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-04 16:40:17,157 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 94 [2020-09-04 16:40:17,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:40:17,158 INFO L225 Difference]: With dead ends: 137 [2020-09-04 16:40:17,158 INFO L226 Difference]: Without dead ends: 108 [2020-09-04 16:40:17,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=239, Invalid=1321, Unknown=0, NotChecked=0, Total=1560 [2020-09-04 16:40:17,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-09-04 16:40:17,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 100. [2020-09-04 16:40:17,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 100 states. [2020-09-04 16:40:17,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 106 transitions. [2020-09-04 16:40:17,176 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 106 transitions. Word has length 94 [2020-09-04 16:40:17,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:40:17,176 INFO L479 AbstractCegarLoop]: Abstraction has 100 states and 106 transitions. [2020-09-04 16:40:17,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-04 16:40:17,177 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 106 transitions. [2020-09-04 16:40:17,177 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-09-04 16:40:17,177 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:40:17,178 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:40:17,178 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-04 16:40:17,178 INFO L427 AbstractCegarLoop]: === Iteration 12 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:40:17,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:40:17,178 INFO L82 PathProgramCache]: Analyzing trace with hash -416868516, now seen corresponding path program 1 times [2020-09-04 16:40:17,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:40:17,179 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288692516] [2020-09-04 16:40:17,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:40:17,181 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:40:17,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:40:17,204 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:40:17,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:40:17,230 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:40:17,283 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 16:40:17,283 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 16:40:17,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-04 16:40:17,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 04:40:17 BoogieIcfgContainer [2020-09-04 16:40:17,312 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 16:40:17,315 INFO L168 Benchmark]: Toolchain (without parser) took 19497.66 ms. Allocated memory was 140.0 MB in the beginning and 406.8 MB in the end (delta: 266.9 MB). Free memory was 102.7 MB in the beginning and 336.8 MB in the end (delta: -234.1 MB). Peak memory consumption was 32.7 MB. Max. memory is 7.1 GB. [2020-09-04 16:40:17,316 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 140.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 16:40:17,317 INFO L168 Benchmark]: CACSL2BoogieTranslator took 719.48 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.5 MB in the beginning and 168.0 MB in the end (delta: -65.5 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. [2020-09-04 16:40:17,318 INFO L168 Benchmark]: Boogie Preprocessor took 67.76 ms. Allocated memory is still 202.9 MB. Free memory was 168.0 MB in the beginning and 165.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-09-04 16:40:17,319 INFO L168 Benchmark]: RCFGBuilder took 679.98 ms. Allocated memory is still 202.9 MB. Free memory was 165.4 MB in the beginning and 117.9 MB in the end (delta: 47.5 MB). Peak memory consumption was 47.5 MB. Max. memory is 7.1 GB. [2020-09-04 16:40:17,319 INFO L168 Benchmark]: TraceAbstraction took 18024.76 ms. Allocated memory was 202.9 MB in the beginning and 406.8 MB in the end (delta: 203.9 MB). Free memory was 117.2 MB in the beginning and 336.8 MB in the end (delta: -219.5 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 16:40:17,323 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 140.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 719.48 ms. Allocated memory was 140.0 MB in the beginning and 202.9 MB in the end (delta: 62.9 MB). Free memory was 102.5 MB in the beginning and 168.0 MB in the end (delta: -65.5 MB). Peak memory consumption was 26.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.76 ms. Allocated memory is still 202.9 MB. Free memory was 168.0 MB in the beginning and 165.4 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 679.98 ms. Allocated memory is still 202.9 MB. Free memory was 165.4 MB in the beginning and 117.9 MB in the end (delta: 47.5 MB). Peak memory consumption was 47.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 18024.76 ms. Allocated memory was 202.9 MB in the beginning and 406.8 MB in the end (delta: 203.9 MB). Free memory was 117.2 MB in the beginning and 336.8 MB in the end (delta: -219.5 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L867] void * guard_malloc_counter = 0; [L887] struct list_head *elem = ((void *)0); [L900] static struct list_head head; [L903] struct list_head *dev1, *dev2; [L904] CALL, EXPR my_malloc(sizeof(*dev1)) [L879] CALL, EXPR __getMemory(size) [L871] (size > 0) ? (0) : __blast_assert () [L872] guard_malloc_counter++ [L873] COND FALSE !(!__VERIFIER_nondet_int()) [L875] return (void *) guard_malloc_counter; [L879] RET, EXPR __getMemory(size) [L879] return __getMemory(size); [L904] RET, EXPR my_malloc(sizeof(*dev1)) [L904] dev1 = my_malloc(sizeof(*dev1)) [L905] CALL, EXPR my_malloc(sizeof(*dev2)) [L879] CALL, EXPR __getMemory(size) [L871] (size > 0) ? (0) : __blast_assert () [L872] guard_malloc_counter++ [L873] COND FALSE !(!__VERIFIER_nondet_int()) [L875] return (void *) guard_malloc_counter; [L879] RET, EXPR __getMemory(size) [L879] return __getMemory(size); [L905] RET, EXPR my_malloc(sizeof(*dev2)) [L905] dev2 = my_malloc(sizeof(*dev2)) [L906] COND TRUE dev1!=((void *)0) && dev2!=((void *)0) [L907] CALL list_add(dev2, &head) [L890] (new!=elem) ? (0) : __blast_assert () [L891] COND FALSE !(__VERIFIER_nondet_int()) [L907] RET list_add(dev2, &head) [L908] CALL list_add(dev1, &head) [L890] (new!=elem) ? (0) : __blast_assert () [L891] COND TRUE __VERIFIER_nondet_int() [L892] elem = new [L908] RET list_add(dev1, &head) [L909] CALL list_del(dev2) [L896] COND FALSE !(entry==elem) [L909] RET list_del(dev2) [L910] CALL list_add(dev2, &head) [L890] (new!=elem) ? (0) : __blast_assert () [L891] COND FALSE !(__VERIFIER_nondet_int()) [L910] RET list_add(dev2, &head) [L913] CALL list_add(dev1, &head) [L890] (new!=elem) ? (0) : __blast_assert () [L890] CALL __blast_assert () [L6] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 71 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 17.9s, OverallIterations: 12, TraceHistogramMax: 4, AutomataDifference: 12.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 629 SDtfs, 1113 SDslu, 2232 SDs, 0 SdLazy, 7486 SolverSat, 605 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 454 GetRequests, 141 SyntacticMatches, 1 SemanticMatches, 312 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1428 ImplicationChecksByTransitivity, 7.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=112occurred in iteration=7, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 11 MinimizatonAttempts, 72 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...