/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 --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/rule60_list.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 17:26:14,968 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 17:26:14,972 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 17:26:14,994 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 17:26:14,995 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 17:26:14,997 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 17:26:14,999 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 17:26:15,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 17:26:15,014 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 17:26:15,015 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 17:26:15,016 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 17:26:15,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 17:26:15,018 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 17:26:15,019 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 17:26:15,020 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 17:26:15,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 17:26:15,023 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 17:26:15,024 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 17:26:15,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 17:26:15,027 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 17:26:15,029 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 17:26:15,030 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 17:26:15,031 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 17:26:15,032 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 17:26:15,039 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 17:26:15,039 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 17:26:15,039 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 17:26:15,041 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 17:26:15,041 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 17:26:15,042 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 17:26:15,042 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 17:26:15,044 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 17:26:15,045 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 17:26:15,046 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 17:26:15,048 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 17:26:15,048 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 17:26:15,052 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 17:26:15,052 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 17:26:15,052 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 17:26:15,054 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 17:26:15,054 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 17:26:15,057 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 17:26:15,072 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 17:26:15,072 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 17:26:15,074 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 17:26:15,075 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 17:26:15,075 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 17:26:15,075 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 17:26:15,075 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 17:26:15,075 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 17:26:15,076 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 17:26:15,076 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 17:26:15,077 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 17:26:15,077 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 17:26:15,077 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 17:26:15,078 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 17:26:15,078 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 17:26:15,078 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 17:26:15,079 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 17:26:15,079 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 17:26:15,079 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 17:26:15,079 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 17:26:15,080 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 17:26:15,080 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 17:26:15,080 INFO L138 SettingsManager]: * Use separate solver for trace checks=false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use separate solver for trace checks -> true [2020-07-17 17:26:15,392 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 17:26:15,408 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 17:26:15,413 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 17:26:15,415 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 17:26:15,415 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 17:26:15,416 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list.i [2020-07-17 17:26:15,513 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0d99a08b/c4f5c149b9524ee68f98d143fbae1095/FLAG8ecc03b95 [2020-07-17 17:26:16,161 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 17:26:16,163 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/rule60_list.i [2020-07-17 17:26:16,189 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0d99a08b/c4f5c149b9524ee68f98d143fbae1095/FLAG8ecc03b95 [2020-07-17 17:26:16,441 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c0d99a08b/c4f5c149b9524ee68f98d143fbae1095 [2020-07-17 17:26:16,454 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 17:26:16,458 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 17:26:16,460 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 17:26:16,460 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 17:26:16,464 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 17:26:16,465 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 05:26:16" (1/1) ... [2020-07-17 17:26:16,469 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ecaeae0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:26:16, skipping insertion in model container [2020-07-17 17:26:16,469 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 05:26:16" (1/1) ... [2020-07-17 17:26:16,479 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 17:26:16,530 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 17:26:16,874 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 17:26:17,031 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 17:26:17,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 17:26:17,195 INFO L208 MainTranslator]: Completed translation [2020-07-17 17:26:17,196 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:26:17 WrapperNode [2020-07-17 17:26:17,197 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 17:26:17,198 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 17:26:17,198 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 17:26:17,198 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 17:26:17,211 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:26:17" (1/1) ... [2020-07-17 17:26:17,211 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:26:17" (1/1) ... [2020-07-17 17:26:17,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:26:17" (1/1) ... [2020-07-17 17:26:17,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:26:17" (1/1) ... [2020-07-17 17:26:17,247 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:26:17" (1/1) ... [2020-07-17 17:26:17,257 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:26:17" (1/1) ... [2020-07-17 17:26:17,268 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:26:17" (1/1) ... [2020-07-17 17:26:17,275 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 17:26:17,276 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 17:26:17,276 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 17:26:17,276 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 17:26:17,278 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:26:17" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 17:26:17,352 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 17:26:17,353 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 17:26:17,353 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-07-17 17:26:17,353 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-07-17 17:26:17,353 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2020-07-17 17:26:17,354 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 17:26:17,354 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 17:26:17,354 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-07-17 17:26:17,354 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-07-17 17:26:17,354 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-07-17 17:26:17,354 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-07-17 17:26:17,355 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-07-17 17:26:17,355 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-07-17 17:26:17,355 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-07-17 17:26:17,355 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-07-17 17:26:17,356 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-07-17 17:26:17,356 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-07-17 17:26:17,356 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-07-17 17:26:17,356 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-07-17 17:26:17,356 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-07-17 17:26:17,357 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-07-17 17:26:17,357 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-07-17 17:26:17,358 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-07-17 17:26:17,358 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-07-17 17:26:17,358 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-07-17 17:26:17,358 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-07-17 17:26:17,358 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-07-17 17:26:17,358 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-07-17 17:26:17,359 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-07-17 17:26:17,359 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-07-17 17:26:17,359 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-07-17 17:26:17,359 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-07-17 17:26:17,359 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-07-17 17:26:17,360 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-07-17 17:26:17,360 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-07-17 17:26:17,360 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-07-17 17:26:17,360 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-07-17 17:26:17,360 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-07-17 17:26:17,360 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-07-17 17:26:17,361 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-07-17 17:26:17,361 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-07-17 17:26:17,361 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-07-17 17:26:17,361 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-07-17 17:26:17,361 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-07-17 17:26:17,361 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-07-17 17:26:17,362 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-07-17 17:26:17,362 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-17 17:26:17,362 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-07-17 17:26:17,362 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-07-17 17:26:17,362 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-07-17 17:26:17,362 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-07-17 17:26:17,362 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-07-17 17:26:17,363 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-07-17 17:26:17,363 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-07-17 17:26:17,363 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-07-17 17:26:17,363 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-07-17 17:26:17,363 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-07-17 17:26:17,363 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-07-17 17:26:17,364 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-07-17 17:26:17,364 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-07-17 17:26:17,364 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-07-17 17:26:17,364 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-07-17 17:26:17,364 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-07-17 17:26:17,364 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-07-17 17:26:17,365 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-07-17 17:26:17,365 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-07-17 17:26:17,365 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-07-17 17:26:17,365 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-07-17 17:26:17,365 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-07-17 17:26:17,365 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-07-17 17:26:17,366 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-07-17 17:26:17,366 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-07-17 17:26:17,366 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-07-17 17:26:17,366 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-07-17 17:26:17,366 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-07-17 17:26:17,367 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-07-17 17:26:17,367 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-07-17 17:26:17,367 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-07-17 17:26:17,367 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-07-17 17:26:17,367 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-07-17 17:26:17,367 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-07-17 17:26:17,368 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-07-17 17:26:17,368 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-07-17 17:26:17,368 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-07-17 17:26:17,368 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-07-17 17:26:17,368 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-07-17 17:26:17,368 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-07-17 17:26:17,369 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-07-17 17:26:17,369 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-07-17 17:26:17,369 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-07-17 17:26:17,369 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-07-17 17:26:17,369 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-07-17 17:26:17,369 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-07-17 17:26:17,370 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-07-17 17:26:17,370 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-07-17 17:26:17,370 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-07-17 17:26:17,370 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-07-17 17:26:17,370 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-07-17 17:26:17,370 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-07-17 17:26:17,371 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-07-17 17:26:17,371 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-07-17 17:26:17,371 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-07-17 17:26:17,371 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-07-17 17:26:17,371 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-07-17 17:26:17,371 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-07-17 17:26:17,372 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-07-17 17:26:17,372 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-07-17 17:26:17,372 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-07-17 17:26:17,372 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-07-17 17:26:17,372 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-17 17:26:17,372 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-17 17:26:17,372 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-17 17:26:17,373 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-17 17:26:17,373 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-17 17:26:17,373 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2020-07-17 17:26:17,373 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-17 17:26:17,373 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2020-07-17 17:26:17,373 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2020-07-17 17:26:17,374 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2020-07-17 17:26:17,374 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2020-07-17 17:26:17,374 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2020-07-17 17:26:17,374 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2020-07-17 17:26:17,374 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2020-07-17 17:26:17,374 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2020-07-17 17:26:17,375 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2020-07-17 17:26:17,375 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2020-07-17 17:26:17,375 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2020-07-17 17:26:17,375 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-07-17 17:26:17,375 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 17:26:17,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 17:26:17,376 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2020-07-17 17:26:17,376 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 17:26:17,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-17 17:26:17,376 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 17:26:17,376 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-07-17 17:26:17,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-07-17 17:26:17,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-07-17 17:26:17,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 17:26:17,377 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-17 17:26:17,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-17 17:26:17,378 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 17:26:17,975 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 17:26:17,976 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-17 17:26:17,980 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 05:26:17 BoogieIcfgContainer [2020-07-17 17:26:17,980 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 17:26:17,982 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 17:26:17,982 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 17:26:17,990 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 17:26:17,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 05:26:16" (1/3) ... [2020-07-17 17:26:17,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49839c29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 05:26:17, skipping insertion in model container [2020-07-17 17:26:17,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:26:17" (2/3) ... [2020-07-17 17:26:17,992 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49839c29 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 05:26:17, skipping insertion in model container [2020-07-17 17:26:17,992 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 05:26:17" (3/3) ... [2020-07-17 17:26:17,994 INFO L109 eAbstractionObserver]: Analyzing ICFG rule60_list.i [2020-07-17 17:26:18,009 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 17:26:18,021 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 17:26:18,035 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 17:26:18,061 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 17:26:18,062 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 17:26:18,062 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-17 17:26:18,062 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 17:26:18,062 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 17:26:18,062 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 17:26:18,062 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 17:26:18,062 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 17:26:18,075 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-07-17 17:26:18,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-17 17:26:18,086 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:26:18,087 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, 1, 1] [2020-07-17 17:26:18,087 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:26:18,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:26:18,094 INFO L82 PathProgramCache]: Analyzing trace with hash -1815251874, now seen corresponding path program 1 times [2020-07-17 17:26:18,103 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:26:18,104 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1943569948] [2020-07-17 17:26:18,104 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:26:18,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:18,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:18,541 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:26:18,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1943569948] [2020-07-17 17:26:18,545 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:26:18,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-07-17 17:26:18,547 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954635967] [2020-07-17 17:26:18,553 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-07-17 17:26:18,553 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:26:18,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-07-17 17:26:18,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-07-17 17:26:18,574 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 9 states. [2020-07-17 17:26:19,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:26:19,077 INFO L93 Difference]: Finished difference Result 77 states and 88 transitions. [2020-07-17 17:26:19,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-17 17:26:19,080 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 23 [2020-07-17 17:26:19,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:26:19,093 INFO L225 Difference]: With dead ends: 77 [2020-07-17 17:26:19,093 INFO L226 Difference]: Without dead ends: 42 [2020-07-17 17:26:19,099 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2020-07-17 17:26:19,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-07-17 17:26:19,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-07-17 17:26:19,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-07-17 17:26:19,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2020-07-17 17:26:19,162 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 23 [2020-07-17 17:26:19,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:26:19,163 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2020-07-17 17:26:19,163 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-07-17 17:26:19,163 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2020-07-17 17:26:19,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-17 17:26:19,165 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:26:19,165 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:26:19,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 17:26:19,166 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:26:19,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:26:19,167 INFO L82 PathProgramCache]: Analyzing trace with hash -953108253, now seen corresponding path program 1 times [2020-07-17 17:26:19,167 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:26:19,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [151469936] [2020-07-17 17:26:19,168 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:26:19,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:19,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:19,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:19,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:26:19,540 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [151469936] [2020-07-17 17:26:19,540 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:26:19,541 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-17 17:26:19,541 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886879536] [2020-07-17 17:26:19,547 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-17 17:26:19,547 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:26:19,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-17 17:26:19,554 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-07-17 17:26:19,554 INFO L87 Difference]: Start difference. First operand 42 states and 42 transitions. Second operand 12 states. [2020-07-17 17:26:20,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:26:20,237 INFO L93 Difference]: Finished difference Result 44 states and 43 transitions. [2020-07-17 17:26:20,238 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-17 17:26:20,238 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 31 [2020-07-17 17:26:20,239 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:26:20,240 INFO L225 Difference]: With dead ends: 44 [2020-07-17 17:26:20,240 INFO L226 Difference]: Without dead ends: 41 [2020-07-17 17:26:20,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2020-07-17 17:26:20,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-07-17 17:26:20,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-07-17 17:26:20,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-07-17 17:26:20,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 40 transitions. [2020-07-17 17:26:20,257 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 40 transitions. Word has length 31 [2020-07-17 17:26:20,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:26:20,257 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 40 transitions. [2020-07-17 17:26:20,258 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-17 17:26:20,258 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 40 transitions. [2020-07-17 17:26:20,259 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-17 17:26:20,259 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:26:20,259 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:26:20,260 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 17:26:20,260 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:26:20,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:26:20,261 INFO L82 PathProgramCache]: Analyzing trace with hash 609934341, now seen corresponding path program 1 times [2020-07-17 17:26:20,261 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:26:20,262 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2039458843] [2020-07-17 17:26:20,262 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:26:20,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:20,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:20,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:20,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:26:20,641 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:26:20,642 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2039458843] [2020-07-17 17:26:20,643 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:26:20,643 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-07-17 17:26:20,643 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897732864] [2020-07-17 17:26:20,646 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-17 17:26:20,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:26:20,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-17 17:26:20,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-07-17 17:26:20,648 INFO L87 Difference]: Start difference. First operand 41 states and 40 transitions. Second operand 12 states. [2020-07-17 17:26:21,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:26:21,219 INFO L93 Difference]: Finished difference Result 41 states and 40 transitions. [2020-07-17 17:26:21,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-17 17:26:21,224 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 40 [2020-07-17 17:26:21,225 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:26:21,225 INFO L225 Difference]: With dead ends: 41 [2020-07-17 17:26:21,225 INFO L226 Difference]: Without dead ends: 0 [2020-07-17 17:26:21,234 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=82, Invalid=380, Unknown=0, NotChecked=0, Total=462 [2020-07-17 17:26:21,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-07-17 17:26:21,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-07-17 17:26:21,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-07-17 17:26:21,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-07-17 17:26:21,236 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 40 [2020-07-17 17:26:21,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:26:21,236 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-07-17 17:26:21,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-17 17:26:21,236 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-07-17 17:26:21,237 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 17:26:21,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 17:26:21,246 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-07-17 17:26:22,458 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-17 17:26:22,459 INFO L271 CegarLoopResult]: At program point L-1-1(line -1) the Hoare annotation is: true [2020-07-17 17:26:22,459 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line 876) the Hoare annotation is: true [2020-07-17 17:26:22,459 INFO L271 CegarLoopResult]: At program point L876(line 876) the Hoare annotation is: true [2020-07-17 17:26:22,459 INFO L271 CegarLoopResult]: At program point L876-1(line 876) the Hoare annotation is: true [2020-07-17 17:26:22,459 INFO L271 CegarLoopResult]: At program point L876-2(line 876) the Hoare annotation is: true [2020-07-17 17:26:22,459 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |old(#NULL.base)| |#NULL.base|) (= |old(~#head~0.base)| |~#head~0.base|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#length)| |#length|) (= |~#head~0.offset| |old(~#head~0.offset)|)) [2020-07-17 17:26:22,460 INFO L271 CegarLoopResult]: At program point L876-3(line 876) the Hoare annotation is: true [2020-07-17 17:26:22,460 INFO L271 CegarLoopResult]: At program point ULTIMATE.initEXIT(line -1) the Hoare annotation is: true [2020-07-17 17:26:22,460 INFO L264 CegarLoopResult]: At program point list_delFINAL(lines 871 874) the Hoare annotation is: (or (not (= 1 (select (select |old(#memory_int)| |list_del_#in~entry.base|) 8))) (and (= list_del_~entry.base |list_del_#in~entry.base|) (= |list_del_#in~entry.offset| list_del_~entry.offset) (= 0 (select (select |#memory_int| |list_del_#in~entry.base|) 8))) (not (= 0 |list_del_#in~entry.offset|))) [2020-07-17 17:26:22,460 INFO L264 CegarLoopResult]: At program point list_delEXIT(lines 871 874) the Hoare annotation is: (or (not (= 1 (select (select |old(#memory_int)| |list_del_#in~entry.base|) 8))) (and (= list_del_~entry.base |list_del_#in~entry.base|) (= |list_del_#in~entry.offset| list_del_~entry.offset) (= 0 (select (select |#memory_int| |list_del_#in~entry.base|) 8))) (not (= 0 |list_del_#in~entry.offset|))) [2020-07-17 17:26:22,461 INFO L264 CegarLoopResult]: At program point L873(line 873) the Hoare annotation is: (or (and (= list_del_~entry.base |list_del_#in~entry.base|) (= |list_del_#in~entry.offset| list_del_~entry.offset) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (not (= 1 (select (select |old(#memory_int)| |list_del_#in~entry.base|) 8))) (not (= 0 |list_del_#in~entry.offset|))) [2020-07-17 17:26:22,461 INFO L264 CegarLoopResult]: At program point L872(line 872) the Hoare annotation is: (or (and (= list_del_~entry.base |list_del_#in~entry.base|) (= |list_del_#in~entry.offset| list_del_~entry.offset) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (not (= 1 (select (select |old(#memory_int)| |list_del_#in~entry.base|) 8))) (not (= 0 |list_del_#in~entry.offset|))) [2020-07-17 17:26:22,461 INFO L264 CegarLoopResult]: At program point list_delENTRY(lines 871 874) the Hoare annotation is: (or (not (= 1 (select (select |old(#memory_int)| |list_del_#in~entry.base|) 8))) (and (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (not (= 0 |list_del_#in~entry.offset|))) [2020-07-17 17:26:22,461 INFO L264 CegarLoopResult]: At program point L872-1(line 872) the Hoare annotation is: (or (and (= list_del_~entry.base |list_del_#in~entry.base|) (= |list_del_#in~entry.offset| list_del_~entry.offset) (= 1 |list_del_#t~mem29|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (not (= 1 (select (select |old(#memory_int)| |list_del_#in~entry.base|) 8))) (not (= 0 |list_del_#in~entry.offset|))) [2020-07-17 17:26:22,461 INFO L264 CegarLoopResult]: At program point L872-3(line 872) the Hoare annotation is: (or (not (= 1 (select (select |old(#memory_int)| |list_del_#in~entry.base|) 8))) (not (= 0 |list_del_#in~entry.offset|))) [2020-07-17 17:26:22,462 INFO L264 CegarLoopResult]: At program point L872-4(line 872) the Hoare annotation is: (or (and (= list_del_~entry.base |list_del_#in~entry.base|) (= |list_del_#in~entry.offset| list_del_~entry.offset) (= 1 |list_del_#t~mem29|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (not (= 1 (select (select |old(#memory_int)| |list_del_#in~entry.base|) 8))) (not (= 0 |list_del_#in~entry.offset|))) [2020-07-17 17:26:22,462 INFO L264 CegarLoopResult]: At program point list_addENTRY(lines 866 869) the Hoare annotation is: (or (not (= 0 (select (select |old(#memory_int)| |list_add_#in~new.base|) 8))) (and (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (not (= 0 |list_add_#in~new.offset|))) [2020-07-17 17:26:22,462 INFO L264 CegarLoopResult]: At program point L867-3(line 867) the Hoare annotation is: (or (not (= 0 (select (select |old(#memory_int)| |list_add_#in~new.base|) 8))) (not (= 0 |list_add_#in~new.offset|))) [2020-07-17 17:26:22,462 INFO L264 CegarLoopResult]: At program point L867-4(line 867) the Hoare annotation is: (let ((.cse0 (not (= 0 (select (select |old(#memory_int)| |list_add_#in~new.base|) 8)))) (.cse1 (not (= 0 |list_add_#in~new.offset|)))) (and (or .cse0 (= 0 |list_add_#t~mem28|) .cse1) (or .cse0 (and (= list_add_~new.base |list_add_#in~new.base|) (= |list_add_#in~new.offset| list_add_~new.offset) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) .cse1))) [2020-07-17 17:26:22,462 INFO L264 CegarLoopResult]: At program point list_addFINAL(lines 866 869) the Hoare annotation is: (or (and (= list_add_~new.base |list_add_#in~new.base|) (= 1 (select (select |#memory_int| |list_add_#in~new.base|) 8)) (= |list_add_#in~new.offset| list_add_~new.offset)) (not (= 0 (select (select |old(#memory_int)| |list_add_#in~new.base|) 8))) (not (= 0 |list_add_#in~new.offset|))) [2020-07-17 17:26:22,463 INFO L264 CegarLoopResult]: At program point L868(line 868) the Hoare annotation is: (or (not (= 0 (select (select |old(#memory_int)| |list_add_#in~new.base|) 8))) (and (= list_add_~new.base |list_add_#in~new.base|) (= |list_add_#in~new.offset| list_add_~new.offset) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (not (= 0 |list_add_#in~new.offset|))) [2020-07-17 17:26:22,463 INFO L264 CegarLoopResult]: At program point list_addEXIT(lines 866 869) the Hoare annotation is: (or (and (= list_add_~new.base |list_add_#in~new.base|) (= 1 (select (select |#memory_int| |list_add_#in~new.base|) 8)) (= |list_add_#in~new.offset| list_add_~new.offset)) (not (= 0 (select (select |old(#memory_int)| |list_add_#in~new.base|) 8))) (not (= 0 |list_add_#in~new.offset|))) [2020-07-17 17:26:22,463 INFO L264 CegarLoopResult]: At program point L867(line 867) the Hoare annotation is: (or (not (= 0 (select (select |old(#memory_int)| |list_add_#in~new.base|) 8))) (and (= list_add_~new.base |list_add_#in~new.base|) (= |list_add_#in~new.offset| list_add_~new.offset) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (not (= 0 |list_add_#in~new.offset|))) [2020-07-17 17:26:22,463 INFO L264 CegarLoopResult]: At program point L866(lines 866 869) the Hoare annotation is: (or (not (= 0 (select (select |old(#memory_int)| |list_add_#in~new.base|) 8))) (and (= list_add_~new.base |list_add_#in~new.base|) (= |list_add_#in~new.offset| list_add_~new.offset) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (not (= 0 |list_add_#in~new.offset|))) [2020-07-17 17:26:22,464 INFO L264 CegarLoopResult]: At program point L867-1(line 867) the Hoare annotation is: (or (not (= 0 (select (select |old(#memory_int)| |list_add_#in~new.base|) 8))) (and (= list_add_~new.base |list_add_#in~new.base|) (= |list_add_#in~new.offset| list_add_~new.offset) (= 0 |list_add_#t~mem28|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) (not (= 0 |list_add_#in~new.offset|))) [2020-07-17 17:26:22,464 INFO L271 CegarLoopResult]: At program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) the Hoare annotation is: true [2020-07-17 17:26:22,464 INFO L271 CegarLoopResult]: At program point __blast_assertEXIT(lines 4 7) the Hoare annotation is: true [2020-07-17 17:26:22,464 INFO L271 CegarLoopResult]: At program point __blast_assertFINAL(lines 4 7) the Hoare annotation is: true [2020-07-17 17:26:22,464 INFO L271 CegarLoopResult]: At program point __blast_assertENTRY(lines 4 7) the Hoare annotation is: true [2020-07-17 17:26:22,465 INFO L271 CegarLoopResult]: At program point ULTIMATE.startEXIT(line -1) the Hoare annotation is: true [2020-07-17 17:26:22,465 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-07-17 17:26:22,465 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-07-17 17:26:22,465 INFO L271 CegarLoopResult]: At program point ULTIMATE.startFINAL(line -1) the Hoare annotation is: true [2020-07-17 17:26:22,465 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 878 888) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2020-07-17 17:26:22,465 INFO L264 CegarLoopResult]: At program point mainEXIT(lines 878 888) the Hoare annotation is: (and (= 0 |main_#t~malloc30.offset|) (= 0 main_~dev~0.offset)) [2020-07-17 17:26:22,466 INFO L264 CegarLoopResult]: At program point L884(line 884) the Hoare annotation is: (and (= 0 |main_#t~malloc30.offset|) (= 0 (select (select |#memory_int| main_~dev~0.base) 8)) (= 0 main_~dev~0.offset)) [2020-07-17 17:26:22,466 INFO L264 CegarLoopResult]: At program point L883(line 883) the Hoare annotation is: (and (= 0 |main_#t~malloc30.offset|) (= 1 (select (select |#memory_int| main_~dev~0.base) 8)) (= 0 main_~dev~0.offset)) [2020-07-17 17:26:22,466 INFO L264 CegarLoopResult]: At program point L882(line 882) the Hoare annotation is: (and (= 0 |main_#t~malloc30.offset|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= 0 main_~dev~0.offset) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2020-07-17 17:26:22,466 INFO L264 CegarLoopResult]: At program point L881(lines 881 886) the Hoare annotation is: (and (= 0 |main_#t~malloc30.offset|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= 0 main_~dev~0.offset) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2020-07-17 17:26:22,467 INFO L264 CegarLoopResult]: At program point L882-1(line 882) the Hoare annotation is: (and (= 0 |main_#t~malloc30.offset|) (= 0 (select (select |#memory_int| main_~dev~0.base) 8)) (= 0 main_~dev~0.offset)) [2020-07-17 17:26:22,467 INFO L264 CegarLoopResult]: At program point L880(line 880) the Hoare annotation is: (and (= |#valid| |old(#valid)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#length)| |#length|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2020-07-17 17:26:22,467 INFO L264 CegarLoopResult]: At program point L881-1(lines 881 886) the Hoare annotation is: (and (= 0 |main_#t~malloc30.offset|) (= 0 main_~dev~0.offset)) [2020-07-17 17:26:22,467 INFO L264 CegarLoopResult]: At program point L880-1(line 880) the Hoare annotation is: (and (= 0 |main_#t~malloc30.offset|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|)) [2020-07-17 17:26:22,467 INFO L264 CegarLoopResult]: At program point mainFINAL(lines 878 888) the Hoare annotation is: (and (= 0 |main_#t~malloc30.offset|) (= 0 main_~dev~0.offset)) [2020-07-17 17:26:22,483 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-17 17:26:22,484 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-17 17:26:22,492 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-17 17:26:22,493 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-17 17:26:22,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 05:26:22 BoogieIcfgContainer [2020-07-17 17:26:22,497 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 17:26:22,501 INFO L168 Benchmark]: Toolchain (without parser) took 6043.13 ms. Allocated memory was 137.4 MB in the beginning and 294.1 MB in the end (delta: 156.8 MB). Free memory was 102.1 MB in the beginning and 229.8 MB in the end (delta: -127.8 MB). Peak memory consumption was 128.4 MB. Max. memory is 7.1 GB. [2020-07-17 17:26:22,502 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 137.4 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-17 17:26:22,503 INFO L168 Benchmark]: CACSL2BoogieTranslator took 737.58 ms. Allocated memory was 137.4 MB in the beginning and 202.9 MB in the end (delta: 65.5 MB). Free memory was 101.7 MB in the beginning and 168.6 MB in the end (delta: -66.9 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. [2020-07-17 17:26:22,504 INFO L168 Benchmark]: Boogie Preprocessor took 77.45 ms. Allocated memory is still 202.9 MB. Free memory was 168.6 MB in the beginning and 165.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. [2020-07-17 17:26:22,505 INFO L168 Benchmark]: RCFGBuilder took 704.52 ms. Allocated memory is still 202.9 MB. Free memory was 165.8 MB in the beginning and 121.7 MB in the end (delta: 44.1 MB). Peak memory consumption was 44.1 MB. Max. memory is 7.1 GB. [2020-07-17 17:26:22,506 INFO L168 Benchmark]: TraceAbstraction took 4515.59 ms. Allocated memory was 202.9 MB in the beginning and 294.1 MB in the end (delta: 91.2 MB). Free memory was 121.0 MB in the beginning and 229.8 MB in the end (delta: -108.8 MB). Peak memory consumption was 81.8 MB. Max. memory is 7.1 GB. [2020-07-17 17:26:22,511 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 137.4 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 737.58 ms. Allocated memory was 137.4 MB in the beginning and 202.9 MB in the end (delta: 65.5 MB). Free memory was 101.7 MB in the beginning and 168.6 MB in the end (delta: -66.9 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 77.45 ms. Allocated memory is still 202.9 MB. Free memory was 168.6 MB in the beginning and 165.8 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 704.52 ms. Allocated memory is still 202.9 MB. Free memory was 165.8 MB in the beginning and 121.7 MB in the end (delta: 44.1 MB). Peak memory consumption was 44.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 4515.59 ms. Allocated memory was 202.9 MB in the beginning and 294.1 MB in the end (delta: 91.2 MB). Free memory was 121.0 MB in the beginning and 229.8 MB in the end (delta: -108.8 MB). Peak memory consumption was 81.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - ProcedureContractResult [Line: 871]: Procedure Contract for list_del [2020-07-17 17:26:22,522 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-17 17:26:22,523 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-17 17:26:22,524 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-17 17:26:22,524 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived contract for procedure list_del: (!(1 == \old(unknown-#memory_int-unknown)[entry][8]) || ((entry == entry && entry == entry) && 0 == unknown-#memory_int-unknown[entry][8])) || !(0 == entry) - ProcedureContractResult [Line: 4]: Procedure Contract for __blast_assert Derived contract for procedure __blast_assert: 1 - ProcedureContractResult [Line: 866]: Procedure Contract for list_add [2020-07-17 17:26:22,525 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-17 17:26:22,525 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-17 17:26:22,526 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-07-17 17:26:22,526 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived contract for procedure list_add: (((new == new && 1 == unknown-#memory_int-unknown[new][8]) && new == new) || !(0 == \old(unknown-#memory_int-unknown)[new][8])) || !(0 == new) - ProcedureContractResult [Line: 878]: Procedure Contract for main Derived contract for procedure main: 0 == malloc(sizeof(*dev)) && 0 == dev - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.1s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 1.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 1.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 79 SDtfs, 133 SDslu, 192 SDs, 0 SdLazy, 595 SolverSat, 50 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 66 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 1.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=45occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 45 LocationsWithAnnotation, 83 PreInvPairs, 102 NumberOfFragments, 642 HoareAnnotationTreeSize, 83 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.2s HoareSimplificationTime, 45 FomulaSimplificationsInter, 813 FormulaSimplificationTreeSizeReductionInter, 0.9s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.9s InterpolantComputationTime, 94 NumberOfCodeBlocks, 94 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 91 ConstructedInterpolants, 0 QuantifiedInterpolants, 15287 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 3/4 InterpolantCoveringCapability, 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 correct! Received shutdown request...