/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/rule60_list.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:28:13,123 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:28:13,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:28:13,162 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:28:13,163 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:28:13,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:28:13,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:28:13,168 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:28:13,170 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:28:13,171 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:28:13,182 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:28:13,184 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:28:13,184 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:28:13,185 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:28:13,187 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:28:13,188 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:28:13,189 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:28:13,190 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:28:13,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:28:13,194 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:28:13,195 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:28:13,200 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:28:13,201 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:28:13,202 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:28:13,205 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-06 22:28:13,206 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-06 22:28:13,206 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-06 22:28:13,207 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-06 22:28:13,207 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-06 22:28:13,209 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-06 22:28:13,209 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-06 22:28:13,210 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-06 22:28:13,211 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-06 22:28:13,211 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-06 22:28:13,213 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-06 22:28:13,213 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-06 22:28:13,214 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-06 22:28:13,214 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-06 22:28:13,214 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:28:13,215 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:28:13,216 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:28:13,217 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-11-06 22:28:13,247 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:28:13,247 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:28:13,249 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:28:13,249 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:28:13,249 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:28:13,249 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:28:13,250 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:28:13,250 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:28:13,250 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:28:13,250 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:28:13,250 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:28:13,250 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:28:13,251 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:28:13,251 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:28:13,251 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:28:13,251 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:28:13,251 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:28:13,252 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:28:13,252 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:28:13,252 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:28:13,252 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:28:13,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:28:13,253 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:28:13,253 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:28:13,253 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:28:13,253 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:28:13,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:28:13,254 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:28:13,254 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:28:13,254 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:28:13,592 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:28:13,616 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:28:13,619 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:28:13,620 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:28:13,621 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:28:13,622 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list.i [2020-11-06 22:28:13,706 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cceb45f1b/b779dfa3e31842648d52f2de702c68a1/FLAG7e0957afe [2020-11-06 22:28:14,410 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:28:14,411 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/ldv-regression/rule60_list.i [2020-11-06 22:28:14,426 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cceb45f1b/b779dfa3e31842648d52f2de702c68a1/FLAG7e0957afe [2020-11-06 22:28:14,734 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cceb45f1b/b779dfa3e31842648d52f2de702c68a1 [2020-11-06 22:28:14,739 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:28:14,748 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:28:14,750 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:28:14,750 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:28:14,754 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:28:14,755 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:28:14" (1/1) ... [2020-11-06 22:28:14,760 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cb1c771 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:14, skipping insertion in model container [2020-11-06 22:28:14,760 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:28:14" (1/1) ... [2020-11-06 22:28:14,769 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:28:14,835 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:28:15,262 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:28:15,273 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:28:15,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:28:15,400 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:28:15,401 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:15 WrapperNode [2020-11-06 22:28:15,401 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:28:15,402 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:28:15,402 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:28:15,403 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:28:15,416 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:15" (1/1) ... [2020-11-06 22:28:15,416 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:15" (1/1) ... [2020-11-06 22:28:15,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:15" (1/1) ... [2020-11-06 22:28:15,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:15" (1/1) ... [2020-11-06 22:28:15,447 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:15" (1/1) ... [2020-11-06 22:28:15,449 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:15" (1/1) ... [2020-11-06 22:28:15,453 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:15" (1/1) ... [2020-11-06 22:28:15,460 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:28:15,461 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:28:15,461 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:28:15,461 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:28:15,462 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:15" (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 [2020-11-06 22:28:15,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:28:15,556 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:28:15,557 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:28:15,557 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-11-06 22:28:15,557 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-11-06 22:28:15,557 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2020-11-06 22:28:15,557 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:28:15,557 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:28:15,558 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:28:15,558 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:28:15,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:28:15,558 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-11-06 22:28:15,558 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-11-06 22:28:15,558 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-11-06 22:28:15,559 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-11-06 22:28:15,559 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-11-06 22:28:15,559 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-11-06 22:28:15,559 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-11-06 22:28:15,559 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-11-06 22:28:15,560 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-11-06 22:28:15,560 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-11-06 22:28:15,560 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-11-06 22:28:15,560 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-11-06 22:28:15,560 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-11-06 22:28:15,560 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-11-06 22:28:15,560 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-11-06 22:28:15,561 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-11-06 22:28:15,561 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-11-06 22:28:15,561 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-11-06 22:28:15,561 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-11-06 22:28:15,561 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-11-06 22:28:15,561 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-11-06 22:28:15,562 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-11-06 22:28:15,562 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-11-06 22:28:15,562 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-11-06 22:28:15,562 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-11-06 22:28:15,562 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-11-06 22:28:15,562 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-11-06 22:28:15,562 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-11-06 22:28:15,563 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-11-06 22:28:15,563 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-11-06 22:28:15,563 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-11-06 22:28:15,563 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-11-06 22:28:15,563 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-11-06 22:28:15,563 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-11-06 22:28:15,563 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-11-06 22:28:15,564 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-11-06 22:28:15,564 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-11-06 22:28:15,564 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-11-06 22:28:15,564 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-11-06 22:28:15,564 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-11-06 22:28:15,564 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-11-06 22:28:15,564 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-11-06 22:28:15,565 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-11-06 22:28:15,565 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-11-06 22:28:15,565 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-11-06 22:28:15,565 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-11-06 22:28:15,565 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-11-06 22:28:15,565 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-11-06 22:28:15,565 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-11-06 22:28:15,566 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-11-06 22:28:15,566 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-11-06 22:28:15,566 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-11-06 22:28:15,566 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-11-06 22:28:15,566 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-11-06 22:28:15,566 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-11-06 22:28:15,567 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-11-06 22:28:15,567 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-11-06 22:28:15,567 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-11-06 22:28:15,567 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-11-06 22:28:15,567 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-11-06 22:28:15,567 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-11-06 22:28:15,568 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-11-06 22:28:15,568 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-11-06 22:28:15,568 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-11-06 22:28:15,568 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-11-06 22:28:15,568 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-11-06 22:28:15,568 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-11-06 22:28:15,568 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-11-06 22:28:15,569 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-11-06 22:28:15,569 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-11-06 22:28:15,569 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-11-06 22:28:15,569 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-11-06 22:28:15,569 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-11-06 22:28:15,569 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-11-06 22:28:15,570 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-11-06 22:28:15,570 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-11-06 22:28:15,570 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-11-06 22:28:15,570 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-11-06 22:28:15,570 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-11-06 22:28:15,570 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-11-06 22:28:15,571 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-11-06 22:28:15,571 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-11-06 22:28:15,571 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-11-06 22:28:15,571 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-11-06 22:28:15,571 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-11-06 22:28:15,571 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-11-06 22:28:15,572 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-11-06 22:28:15,572 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-11-06 22:28:15,572 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-11-06 22:28:15,572 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-11-06 22:28:15,572 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-11-06 22:28:15,572 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-11-06 22:28:15,572 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-11-06 22:28:15,573 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-11-06 22:28:15,573 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-11-06 22:28:15,573 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-11-06 22:28:15,573 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-11-06 22:28:15,573 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-11-06 22:28:15,573 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-11-06 22:28:15,573 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-11-06 22:28:15,574 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-11-06 22:28:15,574 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-11-06 22:28:15,574 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-06 22:28:15,574 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-06 22:28:15,574 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-06 22:28:15,574 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-06 22:28:15,574 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-11-06 22:28:15,575 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2020-11-06 22:28:15,575 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-06 22:28:15,575 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2020-11-06 22:28:15,575 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2020-11-06 22:28:15,575 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2020-11-06 22:28:15,575 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2020-11-06 22:28:15,576 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2020-11-06 22:28:15,576 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2020-11-06 22:28:15,576 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2020-11-06 22:28:15,576 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2020-11-06 22:28:15,576 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2020-11-06 22:28:15,576 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2020-11-06 22:28:15,576 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2020-11-06 22:28:15,577 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-11-06 22:28:15,577 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:28:15,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:28:15,577 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2020-11-06 22:28:15,577 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:28:15,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-06 22:28:15,577 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:28:15,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:28:15,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-11-06 22:28:15,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:28:15,578 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-06 22:28:15,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-06 22:28:15,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:28:16,091 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:28:16,092 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-11-06 22:28:16,095 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:28:16 BoogieIcfgContainer [2020-11-06 22:28:16,095 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:28:16,097 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:28:16,097 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:28:16,100 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:28:16,100 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:28:14" (1/3) ... [2020-11-06 22:28:16,101 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@662a6e03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:28:16, skipping insertion in model container [2020-11-06 22:28:16,101 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:28:15" (2/3) ... [2020-11-06 22:28:16,102 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@662a6e03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:28:16, skipping insertion in model container [2020-11-06 22:28:16,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:28:16" (3/3) ... [2020-11-06 22:28:16,104 INFO L111 eAbstractionObserver]: Analyzing ICFG rule60_list.i [2020-11-06 22:28:16,118 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:28:16,122 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:28:16,134 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:28:16,160 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:28:16,161 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:28:16,161 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:28:16,161 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:28:16,161 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:28:16,161 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:28:16,161 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:28:16,161 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:28:16,178 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-11-06 22:28:16,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-06 22:28:16,183 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:28:16,184 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:28:16,184 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:28:16,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:28:16,194 INFO L82 PathProgramCache]: Analyzing trace with hash -152319127, now seen corresponding path program 1 times [2020-11-06 22:28:16,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:28:16,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1137634238] [2020-11-06 22:28:16,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:28:16,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:16,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:28:16,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:16,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:28:16,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1137634238] [2020-11-06 22:28:16,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:28:16,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-11-06 22:28:16,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567987801] [2020-11-06 22:28:16,627 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-06 22:28:16,627 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:28:16,648 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-06 22:28:16,649 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-11-06 22:28:16,651 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 7 states. [2020-11-06 22:28:16,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:28:16,980 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2020-11-06 22:28:16,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-06 22:28:16,982 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 13 [2020-11-06 22:28:16,983 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:28:16,990 INFO L225 Difference]: With dead ends: 60 [2020-11-06 22:28:16,991 INFO L226 Difference]: Without dead ends: 27 [2020-11-06 22:28:16,994 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-11-06 22:28:17,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2020-11-06 22:28:17,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2020-11-06 22:28:17,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2020-11-06 22:28:17,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2020-11-06 22:28:17,038 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 13 [2020-11-06 22:28:17,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:28:17,038 INFO L481 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2020-11-06 22:28:17,039 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-06 22:28:17,039 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2020-11-06 22:28:17,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-06 22:28:17,040 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:28:17,040 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:28:17,040 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:28:17,041 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:28:17,041 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:28:17,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1875974424, now seen corresponding path program 1 times [2020-11-06 22:28:17,042 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:28:17,042 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350633162] [2020-11-06 22:28:17,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:28:17,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:17,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:28:17,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:17,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:28:17,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:17,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:28:17,346 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350633162] [2020-11-06 22:28:17,346 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:28:17,347 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-11-06 22:28:17,347 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430536159] [2020-11-06 22:28:17,348 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-11-06 22:28:17,348 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:28:17,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-11-06 22:28:17,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-11-06 22:28:17,350 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand 10 states. [2020-11-06 22:28:17,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:28:17,731 INFO L93 Difference]: Finished difference Result 30 states and 29 transitions. [2020-11-06 22:28:17,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-11-06 22:28:17,732 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 19 [2020-11-06 22:28:17,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:28:17,733 INFO L225 Difference]: With dead ends: 30 [2020-11-06 22:28:17,733 INFO L226 Difference]: Without dead ends: 26 [2020-11-06 22:28:17,734 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-11-06 22:28:17,735 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-11-06 22:28:17,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-11-06 22:28:17,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-11-06 22:28:17,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 25 transitions. [2020-11-06 22:28:17,759 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 25 transitions. Word has length 19 [2020-11-06 22:28:17,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:28:17,760 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 25 transitions. [2020-11-06 22:28:17,760 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-11-06 22:28:17,760 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 25 transitions. [2020-11-06 22:28:17,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-11-06 22:28:17,761 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:28:17,761 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] [2020-11-06 22:28:17,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 22:28:17,762 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:28:17,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:28:17,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1526289375, now seen corresponding path program 1 times [2020-11-06 22:28:17,763 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:28:17,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1576963903] [2020-11-06 22:28:17,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:28:17,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:17,931 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:28:17,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:17,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-11-06 22:28:17,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:17,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-11-06 22:28:18,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:18,117 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:28:18,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1576963903] [2020-11-06 22:28:18,117 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [732765663] [2020-11-06 22:28:18,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-06 22:28:18,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:28:18,291 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 22 conjunts are in the unsatisfiable core [2020-11-06 22:28:18,300 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-06 22:28:18,479 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2020-11-06 22:28:18,480 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-06 22:28:18,484 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:28:18,484 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-06 22:28:18,485 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:13, output treesize:9 [2020-11-06 22:28:18,560 INFO L382 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2020-11-06 22:28:18,561 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-11-06 22:28:18,563 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-11-06 22:28:18,563 INFO L547 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-11-06 22:28:18,563 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:19, output treesize:3 [2020-11-06 22:28:18,566 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:28:18,566 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2020-11-06 22:28:18,566 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 14 [2020-11-06 22:28:18,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2041136197] [2020-11-06 22:28:18,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-11-06 22:28:18,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:28:18,568 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-11-06 22:28:18,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-11-06 22:28:18,568 INFO L87 Difference]: Start difference. First operand 26 states and 25 transitions. Second operand 7 states. [2020-11-06 22:28:18,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:28:18,661 INFO L93 Difference]: Finished difference Result 26 states and 25 transitions. [2020-11-06 22:28:18,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-11-06 22:28:18,661 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 25 [2020-11-06 22:28:18,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:28:18,662 INFO L225 Difference]: With dead ends: 26 [2020-11-06 22:28:18,662 INFO L226 Difference]: Without dead ends: 0 [2020-11-06 22:28:18,663 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2020-11-06 22:28:18,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-11-06 22:28:18,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-11-06 22:28:18,664 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-11-06 22:28:18,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-11-06 22:28:18,664 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2020-11-06 22:28:18,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:28:18,664 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-06 22:28:18,664 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-11-06 22:28:18,665 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-11-06 22:28:18,665 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-11-06 22:28:18,872 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2020-11-06 22:28:18,876 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-11-06 22:28:19,022 WARN L194 SmtUtils]: Spent 102.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 20 [2020-11-06 22:28:19,200 INFO L266 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-11-06 22:28:19,201 INFO L269 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-11-06 22:28:19,201 INFO L266 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-11-06 22:28:19,201 INFO L266 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-11-06 22:28:19,201 INFO L266 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:28:19,201 INFO L262 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |#t~string5.base| |old(#t~string5.base)|) (= |old(#t~string6.offset)| |#t~string6.offset|) (= |old(~#head~0.base)| |~#head~0.base|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |~#head~0.offset| |old(~#head~0.offset)|) (= |old(#t~string4.offset)| |#t~string4.offset|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-11-06 22:28:19,202 INFO L266 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:28:19,202 INFO L266 CegarLoopResult]: For program point list_delFINAL(lines 873 876) no Hoare annotation was computed. [2020-11-06 22:28:19,202 INFO L266 CegarLoopResult]: For program point list_delEXIT(lines 873 876) no Hoare annotation was computed. [2020-11-06 22:28:19,202 INFO L266 CegarLoopResult]: For program point L874(line 874) no Hoare annotation was computed. [2020-11-06 22:28:19,202 INFO L262 CegarLoopResult]: At program point L874-2(line 874) the Hoare annotation is: (or (not (= |list_del_#in~entry.offset| 0)) (not (= (select (select |old(#memory_int)| |list_del_#in~entry.base|) 8) 1))) [2020-11-06 22:28:19,202 INFO L262 CegarLoopResult]: At program point list_delENTRY(lines 873 876) the Hoare annotation is: (or (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) (not (= |list_del_#in~entry.offset| 0)) (not (= (select (select |old(#memory_int)| |list_del_#in~entry.base|) 8) 1))) [2020-11-06 22:28:19,203 INFO L266 CegarLoopResult]: For program point L874-3(line 874) no Hoare annotation was computed. [2020-11-06 22:28:19,203 INFO L262 CegarLoopResult]: At program point list_addENTRY(lines 868 871) the Hoare annotation is: (or (not (= (select (select |old(#memory_int)| |list_add_#in~new.base|) (+ |list_add_#in~new.offset| 8)) 0)) (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|))) [2020-11-06 22:28:19,203 INFO L266 CegarLoopResult]: For program point list_addFINAL(lines 868 871) no Hoare annotation was computed. [2020-11-06 22:28:19,203 INFO L266 CegarLoopResult]: For program point L869(line 869) no Hoare annotation was computed. [2020-11-06 22:28:19,203 INFO L266 CegarLoopResult]: For program point list_addEXIT(lines 868 871) no Hoare annotation was computed. [2020-11-06 22:28:19,203 INFO L262 CegarLoopResult]: At program point L869-2(line 869) the Hoare annotation is: (not (= (select (select |old(#memory_int)| |list_add_#in~new.base|) (+ |list_add_#in~new.offset| 8)) 0)) [2020-11-06 22:28:19,203 INFO L266 CegarLoopResult]: For program point L869-3(line 869) no Hoare annotation was computed. [2020-11-06 22:28:19,204 INFO L266 CegarLoopResult]: For program point __blast_assertEXIT(lines 6 9) no Hoare annotation was computed. [2020-11-06 22:28:19,204 INFO L266 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-11-06 22:28:19,204 INFO L266 CegarLoopResult]: For program point __blast_assertFINAL(lines 6 9) no Hoare annotation was computed. [2020-11-06 22:28:19,204 INFO L269 CegarLoopResult]: At program point __blast_assertENTRY(lines 6 9) the Hoare annotation is: true [2020-11-06 22:28:19,204 INFO L266 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-11-06 22:28:19,204 INFO L269 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-11-06 22:28:19,204 INFO L269 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-11-06 22:28:19,205 INFO L266 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-11-06 22:28:19,205 INFO L262 CegarLoopResult]: At program point mainENTRY(lines 880 890) the Hoare annotation is: (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |old(#length)| |#length|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|) (= |old(#valid)| |#valid|)) [2020-11-06 22:28:19,205 INFO L266 CegarLoopResult]: For program point mainFINAL(lines 880 890) no Hoare annotation was computed. [2020-11-06 22:28:19,205 INFO L266 CegarLoopResult]: For program point mainEXIT(lines 880 890) no Hoare annotation was computed. [2020-11-06 22:28:19,205 INFO L262 CegarLoopResult]: At program point L886(line 886) the Hoare annotation is: (and (= main_~dev~0.offset 0) (= (select (select |#memory_int| main_~dev~0.base) (+ main_~dev~0.offset 8)) 0)) [2020-11-06 22:28:19,205 INFO L262 CegarLoopResult]: At program point L885(line 885) the Hoare annotation is: (and (= main_~dev~0.offset 0) (= (select (select |#memory_int| main_~dev~0.base) (+ main_~dev~0.offset 8)) 0)) [2020-11-06 22:28:19,206 INFO L262 CegarLoopResult]: At program point L885-1(line 885) the Hoare annotation is: (and (= main_~dev~0.offset 0) (= (select (select |#memory_int| main_~dev~0.base) 8) 1)) [2020-11-06 22:28:19,206 INFO L266 CegarLoopResult]: For program point L883(lines 883 888) no Hoare annotation was computed. [2020-11-06 22:28:19,206 INFO L266 CegarLoopResult]: For program point L883-1(lines 883 888) no Hoare annotation was computed. [2020-11-06 22:28:19,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:28:19 BoogieIcfgContainer [2020-11-06 22:28:19,211 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:28:19,213 INFO L168 Benchmark]: Toolchain (without parser) took 4470.43 ms. Allocated memory was 155.2 MB in the beginning and 191.9 MB in the end (delta: 36.7 MB). Free memory was 129.0 MB in the beginning and 137.9 MB in the end (delta: -8.9 MB). Peak memory consumption was 102.3 MB. Max. memory is 8.0 GB. [2020-11-06 22:28:19,214 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 155.2 MB. Free memory is still 126.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:28:19,214 INFO L168 Benchmark]: CACSL2BoogieTranslator took 651.50 ms. Allocated memory is still 155.2 MB. Free memory was 128.2 MB in the beginning and 104.7 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-11-06 22:28:19,215 INFO L168 Benchmark]: Boogie Preprocessor took 57.77 ms. Allocated memory is still 155.2 MB. Free memory was 104.7 MB in the beginning and 102.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-11-06 22:28:19,216 INFO L168 Benchmark]: RCFGBuilder took 634.18 ms. Allocated memory is still 155.2 MB. Free memory was 102.2 MB in the beginning and 98.8 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.1 MB. Max. memory is 8.0 GB. [2020-11-06 22:28:19,217 INFO L168 Benchmark]: TraceAbstraction took 3114.57 ms. Allocated memory was 155.2 MB in the beginning and 191.9 MB in the end (delta: 36.7 MB). Free memory was 98.2 MB in the beginning and 137.9 MB in the end (delta: -39.7 MB). Peak memory consumption was 71.0 MB. Max. memory is 8.0 GB. [2020-11-06 22:28:19,220 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 155.2 MB. Free memory is still 126.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 651.50 ms. Allocated memory is still 155.2 MB. Free memory was 128.2 MB in the beginning and 104.7 MB in the end (delta: 23.5 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 57.77 ms. Allocated memory is still 155.2 MB. Free memory was 104.7 MB in the beginning and 102.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 634.18 ms. Allocated memory is still 155.2 MB. Free memory was 102.2 MB in the beginning and 98.8 MB in the end (delta: 3.4 MB). Peak memory consumption was 4.1 MB. Max. memory is 8.0 GB. * TraceAbstraction took 3114.57 ms. Allocated memory was 155.2 MB in the beginning and 191.9 MB in the end (delta: 36.7 MB). Free memory was 98.2 MB in the beginning and 137.9 MB in the end (delta: -39.7 MB). Peak memory consumption was 71.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 35 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.7s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.3s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 55 SDtfs, 45 SDslu, 136 SDs, 0 SdLazy, 199 SolverSat, 30 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 68 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 13 LocationsWithAnnotation, 24 PreInvPairs, 26 NumberOfFragments, 161 HoareAnnotationTreeSize, 24 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 13 FomulaSimplificationsInter, 243 FormulaSimplificationTreeSizeReductionInter, 0.2s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 82 NumberOfCodeBlocks, 82 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 78 ConstructedInterpolants, 0 QuantifiedInterpolants, 9522 SizeOfPredicates, 8 NumberOfNonLiveVariables, 207 ConjunctsInSsa, 22 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 PerfectInterpolantSequences, 3/4 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...