/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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/alt_test.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 20:33:43,305 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 20:33:43,308 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 20:33:43,358 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 20:33:43,359 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 20:33:43,363 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 20:33:43,366 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 20:33:43,374 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 20:33:43,377 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 20:33:43,384 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 20:33:43,385 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 20:33:43,386 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 20:33:43,387 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 20:33:43,390 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 20:33:43,392 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 20:33:43,393 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 20:33:43,394 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 20:33:43,397 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 20:33:43,404 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 20:33:43,411 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 20:33:43,413 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 20:33:43,414 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 20:33:43,417 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 20:33:43,418 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 20:33:43,426 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 20:33:43,426 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 20:33:43,427 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 20:33:43,429 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 20:33:43,429 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 20:33:43,430 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 20:33:43,430 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 20:33:43,431 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 20:33:43,433 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 20:33:43,434 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 20:33:43,435 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 20:33:43,435 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 20:33:43,442 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 20:33:43,442 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 20:33:43,443 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 20:33:43,444 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 20:33:43,444 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 20:33:43,448 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-10-23 20:33:43,466 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 20:33:43,466 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 20:33:43,467 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 20:33:43,468 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 20:33:43,468 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 20:33:43,468 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 20:33:43,468 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 20:33:43,469 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 20:33:43,469 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 20:33:43,469 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 20:33:43,469 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 20:33:43,469 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 20:33:43,469 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 20:33:43,470 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 20:33:43,470 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 20:33:43,470 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-10-23 20:33:43,470 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 20:33:43,470 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 20:33:43,471 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:33:43,471 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 20:33:43,471 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-10-23 20:33:43,471 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 20:33:43,471 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 20:33:43,815 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 20:33:43,848 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 20:33:43,853 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 20:33:43,854 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 20:33:43,855 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 20:33:43,856 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/alt_test.i [2020-10-23 20:33:43,938 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4667a3237/6e607092bd354469bab9bc4b302008e5/FLAG64906d292 [2020-10-23 20:33:44,682 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 20:33:44,682 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/alt_test.i [2020-10-23 20:33:44,710 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4667a3237/6e607092bd354469bab9bc4b302008e5/FLAG64906d292 [2020-10-23 20:33:44,936 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4667a3237/6e607092bd354469bab9bc4b302008e5 [2020-10-23 20:33:44,940 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 20:33:44,949 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 20:33:44,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 20:33:44,954 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 20:33:44,958 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 20:33:44,959 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:33:44" (1/1) ... [2020-10-23 20:33:44,966 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14fbf3c5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:33:44, skipping insertion in model container [2020-10-23 20:33:44,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 08:33:44" (1/1) ... [2020-10-23 20:33:44,977 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 20:33:45,050 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 20:33:45,533 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:33:45,548 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 20:33:45,590 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 20:33:45,713 INFO L208 MainTranslator]: Completed translation [2020-10-23 20:33:45,714 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:33:45 WrapperNode [2020-10-23 20:33:45,714 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 20:33:45,715 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 20:33:45,715 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 20:33:45,716 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 20:33:45,728 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:33:45" (1/1) ... [2020-10-23 20:33:45,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:33:45" (1/1) ... [2020-10-23 20:33:45,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:33:45" (1/1) ... [2020-10-23 20:33:45,744 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:33:45" (1/1) ... [2020-10-23 20:33:45,761 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:33:45" (1/1) ... [2020-10-23 20:33:45,763 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:33:45" (1/1) ... [2020-10-23 20:33:45,767 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:33:45" (1/1) ... [2020-10-23 20:33:45,776 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 20:33:45,777 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 20:33:45,777 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 20:33:45,777 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 20:33:45,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:33:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 20:33:45,867 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 20:33:45,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 20:33:45,868 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 20:33:45,868 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-10-23 20:33:45,868 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 20:33:45,868 INFO L138 BoogieDeclarations]: Found implementation of procedure l_malloc [2020-10-23 20:33:45,868 INFO L138 BoogieDeclarations]: Found implementation of procedure l_free [2020-10-23 20:33:45,869 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 20:33:45,869 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 20:33:45,869 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 20:33:45,869 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 20:33:45,869 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-10-23 20:33:45,869 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-10-23 20:33:45,869 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-10-23 20:33:45,870 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-10-23 20:33:45,870 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-10-23 20:33:45,870 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-10-23 20:33:45,870 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-10-23 20:33:45,870 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-10-23 20:33:45,870 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-10-23 20:33:45,871 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-10-23 20:33:45,871 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-10-23 20:33:45,871 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-10-23 20:33:45,871 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-10-23 20:33:45,871 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-10-23 20:33:45,871 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-10-23 20:33:45,872 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-10-23 20:33:45,872 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-10-23 20:33:45,872 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-10-23 20:33:45,872 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-10-23 20:33:45,872 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-10-23 20:33:45,872 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-10-23 20:33:45,872 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-10-23 20:33:45,873 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-10-23 20:33:45,873 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-10-23 20:33:45,873 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-10-23 20:33:45,873 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-10-23 20:33:45,873 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-10-23 20:33:45,873 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-10-23 20:33:45,874 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-10-23 20:33:45,874 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-10-23 20:33:45,874 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-10-23 20:33:45,874 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-10-23 20:33:45,874 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-10-23 20:33:45,874 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-10-23 20:33:45,874 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-10-23 20:33:45,875 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-10-23 20:33:45,875 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-10-23 20:33:45,875 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-10-23 20:33:45,875 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-23 20:33:45,875 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-10-23 20:33:45,875 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-10-23 20:33:45,875 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-10-23 20:33:45,875 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-10-23 20:33:45,876 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-10-23 20:33:45,876 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-10-23 20:33:45,876 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-10-23 20:33:45,876 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-10-23 20:33:45,876 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-10-23 20:33:45,876 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-10-23 20:33:45,876 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-10-23 20:33:45,877 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-10-23 20:33:45,877 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-10-23 20:33:45,877 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-10-23 20:33:45,877 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-10-23 20:33:45,877 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-10-23 20:33:45,877 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-10-23 20:33:45,877 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-10-23 20:33:45,878 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-10-23 20:33:45,878 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-10-23 20:33:45,878 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-10-23 20:33:45,878 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-10-23 20:33:45,878 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-10-23 20:33:45,878 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-10-23 20:33:45,878 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-10-23 20:33:45,878 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-10-23 20:33:45,879 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-10-23 20:33:45,879 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-10-23 20:33:45,879 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-10-23 20:33:45,879 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-10-23 20:33:45,879 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-10-23 20:33:45,879 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-10-23 20:33:45,879 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-10-23 20:33:45,880 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-10-23 20:33:45,880 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-10-23 20:33:45,880 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-10-23 20:33:45,880 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-10-23 20:33:45,880 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-10-23 20:33:45,880 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-10-23 20:33:45,881 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-10-23 20:33:45,881 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-10-23 20:33:45,881 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-10-23 20:33:45,881 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-10-23 20:33:45,881 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-10-23 20:33:45,881 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-10-23 20:33:45,881 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-10-23 20:33:45,882 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-10-23 20:33:45,882 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-10-23 20:33:45,882 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-10-23 20:33:45,882 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-10-23 20:33:45,882 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-10-23 20:33:45,882 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-10-23 20:33:45,882 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-10-23 20:33:45,883 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-10-23 20:33:45,883 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-10-23 20:33:45,883 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-10-23 20:33:45,883 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-10-23 20:33:45,883 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-10-23 20:33:45,883 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-10-23 20:33:45,883 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-10-23 20:33:45,883 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-10-23 20:33:45,884 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-10-23 20:33:45,884 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-23 20:33:45,884 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-23 20:33:45,884 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-23 20:33:45,884 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-23 20:33:45,884 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-23 20:33:45,884 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-23 20:33:45,885 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-23 20:33:45,885 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-23 20:33:45,885 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-23 20:33:45,885 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-23 20:33:45,885 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-23 20:33:45,885 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-23 20:33:45,885 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-23 20:33:45,885 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-23 20:33:45,886 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-23 20:33:45,886 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-23 20:33:45,886 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-23 20:33:45,886 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-23 20:33:45,886 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-23 20:33:45,886 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-23 20:33:45,886 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-23 20:33:45,886 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-23 20:33:45,887 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-23 20:33:45,887 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-23 20:33:45,887 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-23 20:33:45,887 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-23 20:33:45,887 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-23 20:33:45,887 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-23 20:33:45,887 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-23 20:33:45,888 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-23 20:33:45,888 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-23 20:33:45,888 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-23 20:33:45,888 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-23 20:33:45,888 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-23 20:33:45,888 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-23 20:33:45,888 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-23 20:33:45,889 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-23 20:33:45,889 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-23 20:33:45,889 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-23 20:33:45,889 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-23 20:33:45,889 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-23 20:33:45,889 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-23 20:33:45,889 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-23 20:33:45,890 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-23 20:33:45,890 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-23 20:33:45,890 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-23 20:33:45,890 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-23 20:33:45,890 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-23 20:33:45,890 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-23 20:33:45,890 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-23 20:33:45,891 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 20:33:45,891 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-23 20:33:45,891 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-23 20:33:45,891 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 20:33:45,891 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-23 20:33:45,891 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-23 20:33:45,891 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-23 20:33:45,891 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-23 20:33:45,892 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-23 20:33:45,892 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-23 20:33:45,892 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-23 20:33:45,892 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-23 20:33:45,892 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-23 20:33:45,892 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2020-10-23 20:33:45,892 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-23 20:33:45,892 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-23 20:33:45,893 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-23 20:33:45,893 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-23 20:33:45,893 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-23 20:33:45,893 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-23 20:33:45,893 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-23 20:33:45,893 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-23 20:33:45,893 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-23 20:33:45,894 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-23 20:33:45,894 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-23 20:33:45,894 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-23 20:33:45,894 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-23 20:33:45,894 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-23 20:33:45,894 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-23 20:33:45,894 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-23 20:33:45,894 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-23 20:33:45,894 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-23 20:33:45,895 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-23 20:33:45,895 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-23 20:33:45,895 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-23 20:33:45,895 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-23 20:33:45,895 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-23 20:33:45,895 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-23 20:33:45,895 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-23 20:33:45,896 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-23 20:33:45,896 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-23 20:33:45,896 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-23 20:33:45,896 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-23 20:33:45,896 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-23 20:33:45,896 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-23 20:33:45,896 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-23 20:33:45,896 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-23 20:33:45,897 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-23 20:33:45,897 INFO L130 BoogieDeclarations]: Found specification of procedure posix_openpt [2020-10-23 20:33:45,897 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-23 20:33:45,897 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-10-23 20:33:45,897 INFO L130 BoogieDeclarations]: Found specification of procedure l_malloc [2020-10-23 20:33:45,897 INFO L130 BoogieDeclarations]: Found specification of procedure l_free [2020-10-23 20:33:45,897 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 20:33:45,898 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 20:33:45,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 20:33:45,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 20:33:45,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 20:33:45,898 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 20:33:45,898 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 20:33:45,898 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 20:33:46,471 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 20:33:46,472 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-23 20:33:46,473 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:33:46 BoogieIcfgContainer [2020-10-23 20:33:46,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 20:33:46,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 20:33:46,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 20:33:46,479 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 20:33:46,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 08:33:44" (1/3) ... [2020-10-23 20:33:46,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b5e4dc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:33:46, skipping insertion in model container [2020-10-23 20:33:46,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 08:33:45" (2/3) ... [2020-10-23 20:33:46,480 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6b5e4dc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 08:33:46, skipping insertion in model container [2020-10-23 20:33:46,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 08:33:46" (3/3) ... [2020-10-23 20:33:46,482 INFO L111 eAbstractionObserver]: Analyzing ICFG alt_test.i [2020-10-23 20:33:46,494 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-23 20:33:46,498 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 20:33:46,512 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 20:33:46,535 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 20:33:46,536 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 20:33:46,536 INFO L379 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-10-23 20:33:46,536 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 20:33:46,536 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 20:33:46,536 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 20:33:46,536 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 20:33:46,536 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 20:33:46,552 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states. [2020-10-23 20:33:46,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-23 20:33:46,561 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:33:46,562 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, 1] [2020-10-23 20:33:46,562 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:33:46,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:33:46,568 INFO L82 PathProgramCache]: Analyzing trace with hash 232159600, now seen corresponding path program 1 times [2020-10-23 20:33:46,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:33:46,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [482137796] [2020-10-23 20:33:46,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:33:46,667 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:33:46,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:46,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:33:46,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:46,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-23 20:33:46,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:47,008 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:33:47,010 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [482137796] [2020-10-23 20:33:47,012 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:33:47,012 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-23 20:33:47,012 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892593862] [2020-10-23 20:33:47,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-23 20:33:47,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:33:47,031 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-23 20:33:47,032 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-23 20:33:47,034 INFO L87 Difference]: Start difference. First operand 49 states. Second operand 6 states. [2020-10-23 20:33:47,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:33:47,224 INFO L93 Difference]: Finished difference Result 72 states and 81 transitions. [2020-10-23 20:33:47,224 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 20:33:47,225 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-10-23 20:33:47,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:33:47,234 INFO L225 Difference]: With dead ends: 72 [2020-10-23 20:33:47,235 INFO L226 Difference]: Without dead ends: 39 [2020-10-23 20:33:47,238 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-23 20:33:47,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-10-23 20:33:47,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-10-23 20:33:47,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-23 20:33:47,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 40 transitions. [2020-10-23 20:33:47,289 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 40 transitions. Word has length 32 [2020-10-23 20:33:47,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:33:47,289 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 40 transitions. [2020-10-23 20:33:47,290 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-23 20:33:47,290 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 40 transitions. [2020-10-23 20:33:47,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-23 20:33:47,291 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:33:47,291 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, 1, 1] [2020-10-23 20:33:47,292 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 20:33:47,292 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:33:47,293 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:33:47,293 INFO L82 PathProgramCache]: Analyzing trace with hash 1965821732, now seen corresponding path program 1 times [2020-10-23 20:33:47,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:33:47,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159577494] [2020-10-23 20:33:47,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:33:47,303 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:33:47,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:47,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:33:47,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:47,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-23 20:33:47,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:47,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:33:47,447 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159577494] [2020-10-23 20:33:47,448 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:33:47,448 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 20:33:47,448 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832944603] [2020-10-23 20:33:47,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 20:33:47,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:33:47,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 20:33:47,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-23 20:33:47,451 INFO L87 Difference]: Start difference. First operand 39 states and 40 transitions. Second operand 5 states. [2020-10-23 20:33:47,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:33:47,586 INFO L93 Difference]: Finished difference Result 47 states and 49 transitions. [2020-10-23 20:33:47,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-23 20:33:47,586 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-10-23 20:33:47,587 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:33:47,588 INFO L225 Difference]: With dead ends: 47 [2020-10-23 20:33:47,589 INFO L226 Difference]: Without dead ends: 42 [2020-10-23 20:33:47,590 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-23 20:33:47,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-23 20:33:47,601 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-23 20:33:47,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-23 20:33:47,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2020-10-23 20:33:47,603 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 33 [2020-10-23 20:33:47,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:33:47,604 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2020-10-23 20:33:47,604 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 20:33:47,604 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2020-10-23 20:33:47,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-23 20:33:47,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:33:47,605 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-23 20:33:47,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 20:33:47,606 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:33:47,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:33:47,607 INFO L82 PathProgramCache]: Analyzing trace with hash 870472405, now seen corresponding path program 1 times [2020-10-23 20:33:47,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:33:47,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [985869999] [2020-10-23 20:33:47,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:33:47,614 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:33:47,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:47,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 20:33:47,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:47,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2020-10-23 20:33:47,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:47,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2020-10-23 20:33:47,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 20:33:47,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 20:33:47,897 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [985869999] [2020-10-23 20:33:47,897 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 20:33:47,897 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-23 20:33:47,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754818686] [2020-10-23 20:33:47,898 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-23 20:33:47,898 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-23 20:33:47,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-23 20:33:47,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2020-10-23 20:33:47,900 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 12 states. [2020-10-23 20:33:48,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 20:33:48,225 INFO L93 Difference]: Finished difference Result 58 states and 58 transitions. [2020-10-23 20:33:48,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-23 20:33:48,225 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 40 [2020-10-23 20:33:48,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 20:33:48,227 INFO L225 Difference]: With dead ends: 58 [2020-10-23 20:33:48,227 INFO L226 Difference]: Without dead ends: 42 [2020-10-23 20:33:48,228 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2020-10-23 20:33:48,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-10-23 20:33:48,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-10-23 20:33:48,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-23 20:33:48,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 42 transitions. [2020-10-23 20:33:48,239 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 42 transitions. Word has length 40 [2020-10-23 20:33:48,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 20:33:48,239 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 42 transitions. [2020-10-23 20:33:48,240 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-23 20:33:48,240 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 42 transitions. [2020-10-23 20:33:48,241 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-23 20:33:48,241 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 20:33:48,241 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-23 20:33:48,241 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 20:33:48,242 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 20:33:48,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 20:33:48,242 INFO L82 PathProgramCache]: Analyzing trace with hash -1720072463, now seen corresponding path program 1 times [2020-10-23 20:33:48,242 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-23 20:33:48,243 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [988343663] [2020-10-23 20:33:48,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 20:33:48,248 INFO L321 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-10-23 20:33:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:33:48,266 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:33:48,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 20:33:48,281 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 20:33:48,313 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-23 20:33:48,313 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 20:33:48,314 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 20:33:48,330 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 08:33:48 BoogieIcfgContainer [2020-10-23 20:33:48,330 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 20:33:48,333 INFO L168 Benchmark]: Toolchain (without parser) took 3388.42 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 133.0 MB in the beginning and 98.6 MB in the end (delta: 34.5 MB). Peak memory consumption was 67.7 MB. Max. memory is 8.0 GB. [2020-10-23 20:33:48,334 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 125.8 MB. Free memory is still 102.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 20:33:48,335 INFO L168 Benchmark]: CACSL2BoogieTranslator took 760.75 ms. Allocated memory is still 158.3 MB. Free memory was 132.5 MB in the beginning and 123.9 MB in the end (delta: 8.6 MB). Peak memory consumption was 29.3 MB. Max. memory is 8.0 GB. [2020-10-23 20:33:48,335 INFO L168 Benchmark]: Boogie Preprocessor took 60.91 ms. Allocated memory is still 158.3 MB. Free memory was 123.9 MB in the beginning and 120.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-23 20:33:48,336 INFO L168 Benchmark]: RCFGBuilder took 696.74 ms. Allocated memory is still 158.3 MB. Free memory was 120.8 MB in the beginning and 109.7 MB in the end (delta: 11.1 MB). Peak memory consumption was 29.4 MB. Max. memory is 8.0 GB. [2020-10-23 20:33:48,337 INFO L168 Benchmark]: TraceAbstraction took 1855.16 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 109.2 MB in the beginning and 98.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 42.6 MB. Max. memory is 8.0 GB. [2020-10-23 20:33:48,341 INFO L339 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 125.8 MB. Free memory is still 102.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 760.75 ms. Allocated memory is still 158.3 MB. Free memory was 132.5 MB in the beginning and 123.9 MB in the end (delta: 8.6 MB). Peak memory consumption was 29.3 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 60.91 ms. Allocated memory is still 158.3 MB. Free memory was 123.9 MB in the beginning and 120.8 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 696.74 ms. Allocated memory is still 158.3 MB. Free memory was 120.8 MB in the beginning and 109.7 MB in the end (delta: 11.1 MB). Peak memory consumption was 29.4 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1855.16 ms. Allocated memory was 158.3 MB in the beginning and 190.8 MB in the end (delta: 32.5 MB). Free memory was 109.2 MB in the beginning and 98.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 42.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1608] int globalState = 0; [L1614] CALL, EXPR l_malloc(sizeof(int)) [L1621] void *retVal = malloc(size); [L1622] COND TRUE retVal != ((void *)0) [L1623] globalState=1 [L1624] return retVal; [L1614] RET, EXPR l_malloc(sizeof(int)) [L1614] int *a = (int*) l_malloc(sizeof(int)); [L1615] CALL l_free(a) [L1631] COND TRUE ptr!=((void *)0) [L1631] (globalState == 1) ? (0) : __blast_assert () [L1632] globalState = 0 [L1615] RET l_free(a) [L1616] CALL l_free(a) [L1631] COND TRUE ptr!=((void *)0) [L1631] (globalState == 1) ? (0) : __blast_assert () [L1631] CALL __blast_assert () [L1603] CALL reach_error() [L3] __assert_fail("0", "alt_test.i", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 49 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.7s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 102 SDtfs, 63 SDslu, 269 SDs, 0 SdLazy, 292 SolverSat, 22 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 40 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=49occurred 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: 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...