/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/ldv-regression/alt_test.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:23:29,335 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:23:29,337 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:23:29,356 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:23:29,356 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:23:29,358 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:23:29,360 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:23:29,370 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:23:29,373 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:23:29,376 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:23:29,378 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:23:29,380 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:23:29,381 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:23:29,383 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:23:29,385 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:23:29,386 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:23:29,387 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:23:29,388 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:23:29,390 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:23:29,392 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:23:29,394 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:23:29,398 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:23:29,399 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:23:29,400 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:23:29,402 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 13:23:29,402 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 13:23:29,402 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 13:23:29,403 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 13:23:29,403 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 13:23:29,404 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 13:23:29,404 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 13:23:29,405 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 13:23:29,406 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 13:23:29,407 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 13:23:29,408 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 13:23:29,408 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 13:23:29,408 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 13:23:29,409 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 13:23:29,409 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:23:29,410 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:23:29,410 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:23:29,411 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:23:29,420 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:23:29,420 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:23:29,422 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:23:29,422 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:23:29,422 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:23:29,422 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:23:29,423 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:23:29,423 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:23:29,423 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:23:29,423 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:23:29,423 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:23:29,424 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:23:29,424 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:23:29,424 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:23:29,424 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:23:29,424 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:23:29,425 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:23:29,425 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:23:29,425 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:23:29,425 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:23:29,425 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:23:29,426 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:23:29,426 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:23:29,700 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:23:29,713 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:23:29,717 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:23:29,719 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:23:29,719 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:23:29,719 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/alt_test.i [2020-07-07 13:23:29,789 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2df7b6e9/071bacc344b04b919563725f1537d8e6/FLAG5beca2be6 [2020-07-07 13:23:30,303 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:23:30,304 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/alt_test.i [2020-07-07 13:23:30,318 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2df7b6e9/071bacc344b04b919563725f1537d8e6/FLAG5beca2be6 [2020-07-07 13:23:30,604 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c2df7b6e9/071bacc344b04b919563725f1537d8e6 [2020-07-07 13:23:30,613 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:23:30,615 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:23:30,616 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:23:30,616 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:23:30,620 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:23:30,621 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:23:30" (1/1) ... [2020-07-07 13:23:30,624 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a5de4e8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:30, skipping insertion in model container [2020-07-07 13:23:30,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:23:30" (1/1) ... [2020-07-07 13:23:30,632 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:23:30,677 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:23:31,236 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:23:31,249 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:23:31,288 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:23:31,389 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:23:31,389 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:31 WrapperNode [2020-07-07 13:23:31,390 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:23:31,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:23:31,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:23:31,391 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:23:31,402 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:31" (1/1) ... [2020-07-07 13:23:31,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:31" (1/1) ... [2020-07-07 13:23:31,419 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:31" (1/1) ... [2020-07-07 13:23:31,419 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:31" (1/1) ... [2020-07-07 13:23:31,434 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:31" (1/1) ... [2020-07-07 13:23:31,436 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:31" (1/1) ... [2020-07-07 13:23:31,440 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:31" (1/1) ... [2020-07-07 13:23:31,448 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:23:31,449 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:23:31,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:23:31,449 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:23:31,450 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:31" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:23:31,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:23:31,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:23:31,522 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-07-07 13:23:31,522 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:23:31,523 INFO L138 BoogieDeclarations]: Found implementation of procedure l_malloc [2020-07-07 13:23:31,523 INFO L138 BoogieDeclarations]: Found implementation of procedure l_free [2020-07-07 13:23:31,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:23:31,523 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-07-07 13:23:31,523 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-07-07 13:23:31,523 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-07-07 13:23:31,524 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-07-07 13:23:31,524 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-07-07 13:23:31,524 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-07-07 13:23:31,524 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-07-07 13:23:31,524 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-07-07 13:23:31,524 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-07-07 13:23:31,524 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-07-07 13:23:31,525 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-07-07 13:23:31,525 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-07-07 13:23:31,525 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-07-07 13:23:31,525 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-07-07 13:23:31,525 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-07-07 13:23:31,526 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-07-07 13:23:31,526 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-07-07 13:23:31,526 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-07-07 13:23:31,526 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-07-07 13:23:31,526 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-07-07 13:23:31,526 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-07-07 13:23:31,527 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-07-07 13:23:31,527 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-07-07 13:23:31,527 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-07-07 13:23:31,527 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-07-07 13:23:31,527 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-07-07 13:23:31,527 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-07-07 13:23:31,528 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-07-07 13:23:31,528 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-07-07 13:23:31,528 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-07-07 13:23:31,528 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-07-07 13:23:31,528 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-07-07 13:23:31,528 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-07-07 13:23:31,529 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-07-07 13:23:31,529 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-07-07 13:23:31,529 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-07-07 13:23:31,529 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-07-07 13:23:31,529 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-07-07 13:23:31,529 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-07-07 13:23:31,530 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-07-07 13:23:31,530 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-07-07 13:23:31,531 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-07-07 13:23:31,531 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-07-07 13:23:31,531 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-07-07 13:23:31,531 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-07-07 13:23:31,531 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-07-07 13:23:31,532 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-07-07 13:23:31,532 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-07-07 13:23:31,532 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-07-07 13:23:31,532 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-07-07 13:23:31,532 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-07-07 13:23:31,533 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-07-07 13:23:31,533 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-07-07 13:23:31,533 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-07-07 13:23:31,534 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-07-07 13:23:31,534 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-07-07 13:23:31,534 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-07-07 13:23:31,536 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-07-07 13:23:31,536 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-07-07 13:23:31,536 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-07-07 13:23:31,537 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-07-07 13:23:31,537 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-07-07 13:23:31,537 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-07-07 13:23:31,537 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-07-07 13:23:31,537 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-07-07 13:23:31,538 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-07-07 13:23:31,538 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-07-07 13:23:31,538 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-07-07 13:23:31,538 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-07-07 13:23:31,538 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-07-07 13:23:31,539 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-07-07 13:23:31,539 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-07-07 13:23:31,539 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-07-07 13:23:31,539 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-07-07 13:23:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-07-07 13:23:31,540 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-07-07 13:23:31,541 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-07-07 13:23:31,541 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-07-07 13:23:31,541 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-07-07 13:23:31,541 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-07-07 13:23:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-07-07 13:23:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-07-07 13:23:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-07-07 13:23:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-07-07 13:23:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-07-07 13:23:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-07-07 13:23:31,542 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-07-07 13:23:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-07-07 13:23:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-07-07 13:23:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-07-07 13:23:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-07-07 13:23:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-07-07 13:23:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-07-07 13:23:31,543 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-07-07 13:23:31,544 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-07-07 13:23:31,544 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-07-07 13:23:31,544 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-07-07 13:23:31,544 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-07-07 13:23:31,544 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-07-07 13:23:31,544 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-07-07 13:23:31,544 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-07-07 13:23:31,545 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-07 13:23:31,545 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-07 13:23:31,545 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-07 13:23:31,545 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-07 13:23:31,545 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-07 13:23:31,545 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-07 13:23:31,545 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-07 13:23:31,545 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-07 13:23:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-07 13:23:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-07 13:23:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-07 13:23:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-07 13:23:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-07 13:23:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-07 13:23:31,546 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-07 13:23:31,547 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-07 13:23:31,547 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-07 13:23:31,547 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-07 13:23:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-07 13:23:31,550 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-07 13:23:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-07 13:23:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-07 13:23:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-07 13:23:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-07 13:23:31,551 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-07 13:23:31,552 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-07 13:23:31,552 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-07 13:23:31,552 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-07 13:23:31,552 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-07 13:23:31,552 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-07 13:23:31,552 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-07 13:23:31,553 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-07 13:23:31,553 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-07 13:23:31,553 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-07 13:23:31,553 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-07 13:23:31,553 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-07 13:23:31,553 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-07 13:23:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-07 13:23:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-07 13:23:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-07 13:23:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-07 13:23:31,554 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-07 13:23:31,555 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-07 13:23:31,555 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-07 13:23:31,555 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-07 13:23:31,555 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-07 13:23:31,555 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-07 13:23:31,556 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-07 13:23:31,556 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-07 13:23:31,556 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-07 13:23:31,556 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 13:23:31,556 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-07 13:23:31,556 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-07 13:23:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 13:23:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-07 13:23:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-07 13:23:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-07 13:23:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-07 13:23:31,557 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 13:23:31,558 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-07 13:23:31,558 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-07 13:23:31,558 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-07 13:23:31,558 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-07 13:23:31,558 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-07 13:23:31,558 INFO L130 BoogieDeclarations]: Found specification of procedure __secure_getenv [2020-07-07 13:23:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-07 13:23:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-07 13:23:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-07 13:23:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-07 13:23:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-07 13:23:31,559 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-07 13:23:31,560 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-07 13:23:31,560 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-07 13:23:31,560 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-07 13:23:31,560 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-07 13:23:31,560 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-07 13:23:31,560 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-07 13:23:31,561 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-07 13:23:31,561 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-07 13:23:31,561 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-07 13:23:31,561 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-07 13:23:31,561 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-07 13:23:31,561 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-07 13:23:31,562 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-07 13:23:31,562 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-07 13:23:31,562 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-07 13:23:31,562 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-07 13:23:31,562 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-07 13:23:31,562 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-07 13:23:31,563 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-07 13:23:31,563 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-07 13:23:31,563 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-07 13:23:31,563 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-07 13:23:31,563 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-07 13:23:31,563 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-07 13:23:31,564 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-07 13:23:31,564 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-07 13:23:31,564 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-07 13:23:31,564 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-07 13:23:31,564 INFO L130 BoogieDeclarations]: Found specification of procedure posix_openpt [2020-07-07 13:23:31,564 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-07 13:23:31,564 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-07-07 13:23:31,565 INFO L130 BoogieDeclarations]: Found specification of procedure l_malloc [2020-07-07 13:23:31,565 INFO L130 BoogieDeclarations]: Found specification of procedure l_free [2020-07-07 13:23:31,565 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:23:31,565 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 13:23:31,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 13:23:31,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:23:31,566 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:23:32,119 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:23:32,120 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-07-07 13:23:32,124 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:23:32 BoogieIcfgContainer [2020-07-07 13:23:32,124 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:23:32,127 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:23:32,127 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:23:32,131 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:23:32,131 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:23:30" (1/3) ... [2020-07-07 13:23:32,132 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b06a98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:23:32, skipping insertion in model container [2020-07-07 13:23:32,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:31" (2/3) ... [2020-07-07 13:23:32,133 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@13b06a98 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:23:32, skipping insertion in model container [2020-07-07 13:23:32,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:23:32" (3/3) ... [2020-07-07 13:23:32,135 INFO L109 eAbstractionObserver]: Analyzing ICFG alt_test.i [2020-07-07 13:23:32,147 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:23:32,171 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:23:32,187 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:23:32,212 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:23:32,212 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:23:32,212 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:23:32,212 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:23:32,213 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:23:32,213 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:23:32,213 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:23:32,213 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:23:32,229 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-07-07 13:23:32,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-07 13:23:32,241 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:23:32,242 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] [2020-07-07 13:23:32,242 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:23:32,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:23:32,250 INFO L82 PathProgramCache]: Analyzing trace with hash -464537204, now seen corresponding path program 1 times [2020-07-07 13:23:32,259 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:23:32,260 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1459873382] [2020-07-07 13:23:32,260 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:23:32,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:32,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:32,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:32,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:23:32,567 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:23:32,569 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1459873382] [2020-07-07 13:23:32,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:23:32,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 13:23:32,573 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301213714] [2020-07-07 13:23:32,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 13:23:32,579 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:23:32,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 13:23:32,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:23:32,598 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 6 states. [2020-07-07 13:23:32,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:23:32,776 INFO L93 Difference]: Finished difference Result 62 states and 70 transitions. [2020-07-07 13:23:32,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 13:23:32,778 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-07-07 13:23:32,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:23:32,788 INFO L225 Difference]: With dead ends: 62 [2020-07-07 13:23:32,788 INFO L226 Difference]: Without dead ends: 33 [2020-07-07 13:23:32,792 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-07 13:23:32,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-07-07 13:23:32,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-07-07 13:23:32,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-07-07 13:23:32,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-07-07 13:23:32,842 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 26 [2020-07-07 13:23:32,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:23:32,843 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-07-07 13:23:32,843 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 13:23:32,843 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-07-07 13:23:32,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-07 13:23:32,844 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:23:32,844 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] [2020-07-07 13:23:32,845 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:23:32,845 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:23:32,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:23:32,846 INFO L82 PathProgramCache]: Analyzing trace with hash -1961589014, now seen corresponding path program 1 times [2020-07-07 13:23:32,846 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:23:32,846 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [100728235] [2020-07-07 13:23:32,846 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:23:32,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:32,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:32,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:32,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:23:32,960 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:23:32,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [100728235] [2020-07-07 13:23:32,960 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:23:32,960 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 13:23:32,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027880604] [2020-07-07 13:23:32,961 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 13:23:32,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:23:32,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 13:23:32,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 13:23:32,962 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 5 states. [2020-07-07 13:23:33,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:23:33,072 INFO L93 Difference]: Finished difference Result 40 states and 42 transitions. [2020-07-07 13:23:33,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 13:23:33,072 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 27 [2020-07-07 13:23:33,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:23:33,074 INFO L225 Difference]: With dead ends: 40 [2020-07-07 13:23:33,074 INFO L226 Difference]: Without dead ends: 36 [2020-07-07 13:23:33,075 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-07-07 13:23:33,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-07-07 13:23:33,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-07-07 13:23:33,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-07-07 13:23:33,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-07-07 13:23:33,086 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 27 [2020-07-07 13:23:33,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:23:33,086 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-07-07 13:23:33,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 13:23:33,087 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-07-07 13:23:33,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-07 13:23:33,088 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:23:33,088 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] [2020-07-07 13:23:33,088 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:23:33,089 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:23:33,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:23:33,089 INFO L82 PathProgramCache]: Analyzing trace with hash -1381039993, now seen corresponding path program 1 times [2020-07-07 13:23:33,089 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:23:33,089 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1064250150] [2020-07-07 13:23:33,090 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:23:33,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:33,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:33,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:33,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:33,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:23:33,351 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:23:33,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1064250150] [2020-07-07 13:23:33,352 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:23:33,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-07-07 13:23:33,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [584980542] [2020-07-07 13:23:33,353 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-07-07 13:23:33,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:23:33,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-07-07 13:23:33,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-07-07 13:23:33,354 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 12 states. [2020-07-07 13:23:33,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:23:33,693 INFO L93 Difference]: Finished difference Result 51 states and 51 transitions. [2020-07-07 13:23:33,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-07-07 13:23:33,693 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 34 [2020-07-07 13:23:33,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:23:33,695 INFO L225 Difference]: With dead ends: 51 [2020-07-07 13:23:33,695 INFO L226 Difference]: Without dead ends: 36 [2020-07-07 13:23:33,696 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=279, Unknown=0, NotChecked=0, Total=342 [2020-07-07 13:23:33,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-07-07 13:23:33,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-07-07 13:23:33,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-07-07 13:23:33,705 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 36 transitions. [2020-07-07 13:23:33,705 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 36 transitions. Word has length 34 [2020-07-07 13:23:33,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:23:33,706 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 36 transitions. [2020-07-07 13:23:33,706 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-07-07 13:23:33,706 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 36 transitions. [2020-07-07 13:23:33,707 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-07-07 13:23:33,707 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:23:33,707 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] [2020-07-07 13:23:33,708 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 13:23:33,708 INFO L427 AbstractCegarLoop]: === Iteration 4 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:23:33,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:23:33,708 INFO L82 PathProgramCache]: Analyzing trace with hash -1342711683, now seen corresponding path program 1 times [2020-07-07 13:23:33,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:23:33,709 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866519622] [2020-07-07 13:23:33,709 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:23:33,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:23:33,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:23:33,780 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:23:33,780 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 13:23:33,780 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 13:23:33,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 13:23:33,801 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 01:23:33 BoogieIcfgContainer [2020-07-07 13:23:33,801 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 13:23:33,804 INFO L168 Benchmark]: Toolchain (without parser) took 3188.58 ms. Allocated memory was 144.2 MB in the beginning and 251.7 MB in the end (delta: 107.5 MB). Free memory was 101.3 MB in the beginning and 196.9 MB in the end (delta: -95.6 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2020-07-07 13:23:33,805 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 144.2 MB. Free memory is still 121.1 MB. There was no memory consumed. Max. memory is 7.1 GB. [2020-07-07 13:23:33,805 INFO L168 Benchmark]: CACSL2BoogieTranslator took 774.11 ms. Allocated memory was 144.2 MB in the beginning and 204.5 MB in the end (delta: 60.3 MB). Free memory was 101.3 MB in the beginning and 154.8 MB in the end (delta: -53.5 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2020-07-07 13:23:33,806 INFO L168 Benchmark]: Boogie Preprocessor took 58.27 ms. Allocated memory is still 204.5 MB. Free memory was 154.8 MB in the beginning and 151.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. [2020-07-07 13:23:33,807 INFO L168 Benchmark]: RCFGBuilder took 675.63 ms. Allocated memory is still 204.5 MB. Free memory was 151.8 MB in the beginning and 92.0 MB in the end (delta: 59.7 MB). Peak memory consumption was 59.7 MB. Max. memory is 7.1 GB. [2020-07-07 13:23:33,808 INFO L168 Benchmark]: TraceAbstraction took 1673.87 ms. Allocated memory was 204.5 MB in the beginning and 251.7 MB in the end (delta: 47.2 MB). Free memory was 92.0 MB in the beginning and 196.9 MB in the end (delta: -104.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-07 13:23:33,812 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 144.2 MB. Free memory is still 121.1 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 774.11 ms. Allocated memory was 144.2 MB in the beginning and 204.5 MB in the end (delta: 60.3 MB). Free memory was 101.3 MB in the beginning and 154.8 MB in the end (delta: -53.5 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 58.27 ms. Allocated memory is still 204.5 MB. Free memory was 154.8 MB in the beginning and 151.8 MB in the end (delta: 3.0 MB). Peak memory consumption was 3.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 675.63 ms. Allocated memory is still 204.5 MB. Free memory was 151.8 MB in the beginning and 92.0 MB in the end (delta: 59.7 MB). Peak memory consumption was 59.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1673.87 ms. Allocated memory was 204.5 MB in the beginning and 251.7 MB in the end (delta: 47.2 MB). Free memory was 92.0 MB in the beginning and 196.9 MB in the end (delta: -104.8 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1601]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L1606] int globalState = 0; [L1612] CALL, EXPR l_malloc(sizeof(int)) [L1619] void *retVal = malloc(size); [L1620] COND TRUE retVal != ((void *)0) [L1621] globalState=1 [L1622] return retVal; [L1612] RET, EXPR l_malloc(sizeof(int)) [L1612] int *a = (int*) l_malloc(sizeof(int)); [L1613] CALL l_free(a) [L1629] COND TRUE ptr!=((void *)0) [L1629] (globalState == 1) ? (0) : __blast_assert () [L1630] globalState = 0 [L1613] RET l_free(a) [L1614] CALL l_free(a) [L1629] COND TRUE ptr!=((void *)0) [L1629] (globalState == 1) ? (0) : __blast_assert () [L1629] CALL __blast_assert () [L1601] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 40 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.5s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 84 SDtfs, 94 SDslu, 186 SDs, 0 SdLazy, 280 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred 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...