/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/rule60_list.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 21:07:23,469 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 21:07:23,472 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 21:07:23,497 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 21:07:23,497 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 21:07:23,499 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 21:07:23,500 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 21:07:23,502 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 21:07:23,504 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 21:07:23,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 21:07:23,506 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 21:07:23,507 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 21:07:23,508 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 21:07:23,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 21:07:23,510 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 21:07:23,511 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 21:07:23,512 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 21:07:23,513 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 21:07:23,515 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 21:07:23,517 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 21:07:23,519 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 21:07:23,520 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 21:07:23,524 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 21:07:23,525 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 21:07:23,528 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 21:07:23,528 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 21:07:23,533 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 21:07:23,535 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 21:07:23,535 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 21:07:23,539 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 21:07:23,539 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 21:07:23,540 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 21:07:23,541 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 21:07:23,542 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 21:07:23,543 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 21:07:23,543 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 21:07:23,543 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 21:07:23,547 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 21:07:23,547 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 21:07:23,548 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 21:07:23,549 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 21:07:23,550 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 21:07:23,596 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 21:07:23,596 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 21:07:23,600 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 21:07:23,601 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 21:07:23,601 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 21:07:23,601 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 21:07:23,601 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 21:07:23,602 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 21:07:23,602 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 21:07:23,602 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 21:07:23,602 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 21:07:23,602 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 21:07:23,603 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 21:07:23,603 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 21:07:23,603 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 21:07:23,604 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 21:07:23,604 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 21:07:23,604 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 21:07:23,604 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 21:07:23,605 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 21:07:23,605 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 21:07:23,605 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 21:07:23,605 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 21:07:23,606 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 21:07:23,606 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 21:07:23,606 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 21:07:23,606 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 21:07:23,606 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 21:07:23,607 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 21:07:23,607 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=DEEPEST; [2020-08-18 21:07:23,925 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 21:07:23,938 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 21:07:23,942 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 21:07:23,943 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 21:07:23,944 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 21:07:23,945 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/rule60_list.i [2020-08-18 21:07:24,007 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2715632c/40c4ef732b5a4a7fa2ff996ca19462a3/FLAGf6d1795a0 [2020-08-18 21:07:24,596 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 21:07:24,600 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/rule60_list.i [2020-08-18 21:07:24,619 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2715632c/40c4ef732b5a4a7fa2ff996ca19462a3/FLAGf6d1795a0 [2020-08-18 21:07:24,888 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c2715632c/40c4ef732b5a4a7fa2ff996ca19462a3 [2020-08-18 21:07:24,897 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 21:07:24,899 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 21:07:24,900 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 21:07:24,900 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 21:07:24,904 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 21:07:24,905 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:07:24" (1/1) ... [2020-08-18 21:07:24,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@266da51c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:07:24, skipping insertion in model container [2020-08-18 21:07:24,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 09:07:24" (1/1) ... [2020-08-18 21:07:24,917 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 21:07:24,961 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 21:07:25,379 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:07:25,394 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 21:07:25,467 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 21:07:25,528 INFO L208 MainTranslator]: Completed translation [2020-08-18 21:07:25,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:07:25 WrapperNode [2020-08-18 21:07:25,529 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 21:07:25,530 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 21:07:25,530 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 21:07:25,530 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 21:07:25,543 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:07:25" (1/1) ... [2020-08-18 21:07:25,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:07:25" (1/1) ... [2020-08-18 21:07:25,560 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:07:25" (1/1) ... [2020-08-18 21:07:25,560 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:07:25" (1/1) ... [2020-08-18 21:07:25,584 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:07:25" (1/1) ... [2020-08-18 21:07:25,586 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:07:25" (1/1) ... [2020-08-18 21:07:25,590 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:07:25" (1/1) ... [2020-08-18 21:07:25,596 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 21:07:25,597 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 21:07:25,597 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 21:07:25,597 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 21:07:25,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:07:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 21:07:25,660 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 21:07:25,661 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 21:07:25,661 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-08-18 21:07:25,661 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-08-18 21:07:25,661 INFO L138 BoogieDeclarations]: Found implementation of procedure list_del [2020-08-18 21:07:25,661 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 21:07:25,661 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 21:07:25,662 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-08-18 21:07:25,662 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-08-18 21:07:25,662 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-08-18 21:07:25,662 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-08-18 21:07:25,662 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-08-18 21:07:25,662 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-08-18 21:07:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-08-18 21:07:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-08-18 21:07:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-08-18 21:07:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-08-18 21:07:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-08-18 21:07:25,663 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-08-18 21:07:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-08-18 21:07:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-08-18 21:07:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-08-18 21:07:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-08-18 21:07:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-08-18 21:07:25,664 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-08-18 21:07:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-08-18 21:07:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-08-18 21:07:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-08-18 21:07:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-08-18 21:07:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-08-18 21:07:25,665 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-08-18 21:07:25,666 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-08-18 21:07:25,666 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-08-18 21:07:25,666 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-08-18 21:07:25,666 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-08-18 21:07:25,666 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-08-18 21:07:25,666 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-08-18 21:07:25,667 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-08-18 21:07:25,667 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-08-18 21:07:25,667 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-08-18 21:07:25,667 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-08-18 21:07:25,667 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-08-18 21:07:25,667 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-08-18 21:07:25,667 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-08-18 21:07:25,668 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-08-18 21:07:25,668 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-08-18 21:07:25,668 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-08-18 21:07:25,668 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-08-18 21:07:25,668 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-08-18 21:07:25,668 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-08-18 21:07:25,669 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-08-18 21:07:25,669 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-08-18 21:07:25,669 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-08-18 21:07:25,669 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-08-18 21:07:25,669 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-08-18 21:07:25,669 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-08-18 21:07:25,670 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-08-18 21:07:25,670 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-08-18 21:07:25,670 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-08-18 21:07:25,670 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-08-18 21:07:25,670 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-08-18 21:07:25,670 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-08-18 21:07:25,671 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-08-18 21:07:25,671 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-08-18 21:07:25,671 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-08-18 21:07:25,671 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-08-18 21:07:25,671 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-08-18 21:07:25,671 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-08-18 21:07:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-08-18 21:07:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-08-18 21:07:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-08-18 21:07:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-08-18 21:07:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-08-18 21:07:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-08-18 21:07:25,672 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-08-18 21:07:25,673 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-08-18 21:07:25,673 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-08-18 21:07:25,673 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-08-18 21:07:25,673 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-08-18 21:07:25,673 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-08-18 21:07:25,673 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-08-18 21:07:25,673 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-08-18 21:07:25,674 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-08-18 21:07:25,674 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-08-18 21:07:25,674 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-08-18 21:07:25,674 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-08-18 21:07:25,674 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-08-18 21:07:25,674 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-08-18 21:07:25,675 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-08-18 21:07:25,675 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-08-18 21:07:25,675 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-08-18 21:07:25,675 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-08-18 21:07:25,675 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-08-18 21:07:25,675 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-08-18 21:07:25,676 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-08-18 21:07:25,676 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-08-18 21:07:25,676 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-08-18 21:07:25,676 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-08-18 21:07:25,676 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-08-18 21:07:25,676 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-08-18 21:07:25,676 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-08-18 21:07:25,677 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-08-18 21:07:25,677 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-08-18 21:07:25,677 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-08-18 21:07:25,677 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-08-18 21:07:25,677 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-08-18 21:07:25,677 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-08-18 21:07:25,678 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-08-18 21:07:25,678 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-08-18 21:07:25,678 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-18 21:07:25,678 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-18 21:07:25,678 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-18 21:07:25,678 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-18 21:07:25,678 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-18 21:07:25,679 INFO L130 BoogieDeclarations]: Found specification of procedure memalign [2020-08-18 21:07:25,679 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-18 21:07:25,679 INFO L130 BoogieDeclarations]: Found specification of procedure pvalloc [2020-08-18 21:07:25,679 INFO L130 BoogieDeclarations]: Found specification of procedure __default_morecore [2020-08-18 21:07:25,679 INFO L130 BoogieDeclarations]: Found specification of procedure mallinfo [2020-08-18 21:07:25,679 INFO L130 BoogieDeclarations]: Found specification of procedure mallopt [2020-08-18 21:07:25,679 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_trim [2020-08-18 21:07:25,680 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_usable_size [2020-08-18 21:07:25,680 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_stats [2020-08-18 21:07:25,680 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_info [2020-08-18 21:07:25,680 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_get_state [2020-08-18 21:07:25,680 INFO L130 BoogieDeclarations]: Found specification of procedure malloc_set_state [2020-08-18 21:07:25,680 INFO L130 BoogieDeclarations]: Found specification of procedure __malloc_check_init [2020-08-18 21:07:25,680 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-08-18 21:07:25,681 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 21:07:25,681 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 21:07:25,681 INFO L130 BoogieDeclarations]: Found specification of procedure list_del [2020-08-18 21:07:25,681 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 21:07:25,681 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-18 21:07:25,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 21:07:25,682 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 21:07:25,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-18 21:07:25,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 21:07:25,682 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 21:07:25,682 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-18 21:07:25,682 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-18 21:07:25,683 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 21:07:26,233 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 21:07:26,233 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 21:07:26,245 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:07:26 BoogieIcfgContainer [2020-08-18 21:07:26,246 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 21:07:26,254 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 21:07:26,254 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 21:07:26,265 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 21:07:26,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 09:07:24" (1/3) ... [2020-08-18 21:07:26,267 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5456821a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:07:26, skipping insertion in model container [2020-08-18 21:07:26,270 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 09:07:25" (2/3) ... [2020-08-18 21:07:26,271 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5456821a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 09:07:26, skipping insertion in model container [2020-08-18 21:07:26,271 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 09:07:26" (3/3) ... [2020-08-18 21:07:26,279 INFO L109 eAbstractionObserver]: Analyzing ICFG rule60_list.i [2020-08-18 21:07:26,299 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 21:07:26,309 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 21:07:26,326 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 21:07:26,371 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 21:07:26,371 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 21:07:26,371 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 21:07:26,371 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 21:07:26,372 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 21:07:26,372 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 21:07:26,372 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 21:07:26,372 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 21:07:26,393 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-08-18 21:07:26,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-08-18 21:07:26,400 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:07:26,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:07:26,402 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:07:26,408 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:07:26,409 INFO L82 PathProgramCache]: Analyzing trace with hash 2070742689, now seen corresponding path program 1 times [2020-08-18 21:07:26,419 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:07:26,420 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123658163] [2020-08-18 21:07:26,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:07:26,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:07:26,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:07:26,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:07:26,817 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:07:26,818 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123658163] [2020-08-18 21:07:26,821 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:07:26,822 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-18 21:07:26,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944311500] [2020-08-18 21:07:26,828 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-18 21:07:26,828 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:07:26,843 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-18 21:07:26,844 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-08-18 21:07:26,847 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 7 states. [2020-08-18 21:07:27,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:07:27,098 INFO L93 Difference]: Finished difference Result 55 states and 66 transitions. [2020-08-18 21:07:27,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-18 21:07:27,101 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-08-18 21:07:27,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:07:27,111 INFO L225 Difference]: With dead ends: 55 [2020-08-18 21:07:27,111 INFO L226 Difference]: Without dead ends: 26 [2020-08-18 21:07:27,116 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-08-18 21:07:27,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-08-18 21:07:27,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-08-18 21:07:27,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-08-18 21:07:27,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-08-18 21:07:27,166 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 12 [2020-08-18 21:07:27,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:07:27,167 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-08-18 21:07:27,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-18 21:07:27,167 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-08-18 21:07:27,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-18 21:07:27,168 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:07:27,168 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 21:07:27,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 21:07:27,169 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:07:27,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:07:27,170 INFO L82 PathProgramCache]: Analyzing trace with hash 1302580324, now seen corresponding path program 1 times [2020-08-18 21:07:27,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:07:27,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1702494793] [2020-08-18 21:07:27,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:07:27,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:07:27,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:07:27,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:07:27,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 21:07:27,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:07:27,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:07:27,426 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1702494793] [2020-08-18 21:07:27,426 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-18 21:07:27,427 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-08-18 21:07:27,427 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684235914] [2020-08-18 21:07:27,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 21:07:27,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:07:27,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 21:07:27,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-18 21:07:27,430 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 10 states. [2020-08-18 21:07:27,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:07:27,771 INFO L93 Difference]: Finished difference Result 28 states and 27 transitions. [2020-08-18 21:07:27,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 21:07:27,771 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 18 [2020-08-18 21:07:27,772 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:07:27,773 INFO L225 Difference]: With dead ends: 28 [2020-08-18 21:07:27,773 INFO L226 Difference]: Without dead ends: 25 [2020-08-18 21:07:27,774 INFO L675 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 [2020-08-18 21:07:27,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-08-18 21:07:27,781 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-08-18 21:07:27,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-08-18 21:07:27,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 24 transitions. [2020-08-18 21:07:27,783 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 24 transitions. Word has length 18 [2020-08-18 21:07:27,783 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:07:27,783 INFO L479 AbstractCegarLoop]: Abstraction has 25 states and 24 transitions. [2020-08-18 21:07:27,784 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 21:07:27,784 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 24 transitions. [2020-08-18 21:07:27,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-18 21:07:27,785 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 21:07:27,785 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] [2020-08-18 21:07:27,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-18 21:07:27,786 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 21:07:27,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 21:07:27,786 INFO L82 PathProgramCache]: Analyzing trace with hash -1070618069, now seen corresponding path program 1 times [2020-08-18 21:07:27,786 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 21:07:27,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [520543423] [2020-08-18 21:07:27,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 21:07:27,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:07:27,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-18 21:07:27,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:07:27,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-18 21:07:27,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:07:27,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-08-18 21:07:27,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-18 21:07:28,039 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-18 21:07:28,040 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [520543423] [2020-08-18 21:07:28,041 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-08-18 21:07:28,041 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-08-18 21:07:28,041 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1986258270] [2020-08-18 21:07:28,042 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-08-18 21:07:28,042 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-18 21:07:28,042 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-08-18 21:07:28,043 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-08-18 21:07:28,051 INFO L87 Difference]: Start difference. First operand 25 states and 24 transitions. Second operand 10 states. [2020-08-18 21:07:28,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-18 21:07:28,374 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2020-08-18 21:07:28,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-08-18 21:07:28,375 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 24 [2020-08-18 21:07:28,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-18 21:07:28,376 INFO L225 Difference]: With dead ends: 25 [2020-08-18 21:07:28,376 INFO L226 Difference]: Without dead ends: 0 [2020-08-18 21:07:28,377 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2020-08-18 21:07:28,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-18 21:07:28,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-18 21:07:28,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-18 21:07:28,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-18 21:07:28,378 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 24 [2020-08-18 21:07:28,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-18 21:07:28,378 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-18 21:07:28,379 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-08-18 21:07:28,379 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-18 21:07:28,379 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-18 21:07:28,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-18 21:07:28,382 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-18 21:07:28,559 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-18 21:07:28,559 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |old(#NULL.base)| |#NULL.base|) (= |old(~#head~0.base)| |~#head~0.base|) (= |old(#length)| |#length|) (= |~#head~0.offset| |old(~#head~0.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-08-18 21:07:28,560 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-18 21:07:28,560 INFO L268 CegarLoopResult]: For program point list_delFINAL(lines 871 874) no Hoare annotation was computed. [2020-08-18 21:07:28,560 INFO L268 CegarLoopResult]: For program point list_delEXIT(lines 871 874) no Hoare annotation was computed. [2020-08-18 21:07:28,560 INFO L268 CegarLoopResult]: For program point L872(line 872) no Hoare annotation was computed. [2020-08-18 21:07:28,560 INFO L264 CegarLoopResult]: At program point list_delENTRY(lines 871 874) 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))) [2020-08-18 21:07:28,561 INFO L264 CegarLoopResult]: At program point L872-2(line 872) 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))) [2020-08-18 21:07:28,561 INFO L268 CegarLoopResult]: For program point L872-3(line 872) no Hoare annotation was computed. [2020-08-18 21:07:28,561 INFO L264 CegarLoopResult]: At program point L867-2(line 867) the Hoare annotation is: (or (not (= (select (select |old(#memory_int)| |list_add_#in~new.base|) 8) 0)) (not (= |list_add_#in~new.offset| 0))) [2020-08-18 21:07:28,561 INFO L264 CegarLoopResult]: At program point list_addENTRY(lines 866 869) the Hoare annotation is: (or (not (= (select (select |old(#memory_int)| |list_add_#in~new.base|) 8) 0)) (and (= |#memory_$Pointer$.offset| |old(#memory_$Pointer$.offset)|) (= |#memory_int| |old(#memory_int)|) (= |#memory_$Pointer$.base| |old(#memory_$Pointer$.base)|)) (not (= |list_add_#in~new.offset| 0))) [2020-08-18 21:07:28,561 INFO L268 CegarLoopResult]: For program point L867-3(line 867) no Hoare annotation was computed. [2020-08-18 21:07:28,562 INFO L268 CegarLoopResult]: For program point list_addFINAL(lines 866 869) no Hoare annotation was computed. [2020-08-18 21:07:28,562 INFO L268 CegarLoopResult]: For program point list_addEXIT(lines 866 869) no Hoare annotation was computed. [2020-08-18 21:07:28,562 INFO L268 CegarLoopResult]: For program point L867(line 867) no Hoare annotation was computed. [2020-08-18 21:07:28,562 INFO L268 CegarLoopResult]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-08-18 21:07:28,562 INFO L268 CegarLoopResult]: For program point __blast_assertEXIT(lines 4 7) no Hoare annotation was computed. [2020-08-18 21:07:28,562 INFO L268 CegarLoopResult]: For program point __blast_assertFINAL(lines 4 7) no Hoare annotation was computed. [2020-08-18 21:07:28,563 INFO L271 CegarLoopResult]: At program point __blast_assertENTRY(lines 4 7) the Hoare annotation is: true [2020-08-18 21:07:28,563 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-18 21:07:28,563 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-18 21:07:28,563 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-18 21:07:28,563 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-18 21:07:28,563 INFO L268 CegarLoopResult]: For program point L881(lines 881 886) no Hoare annotation was computed. [2020-08-18 21:07:28,563 INFO L268 CegarLoopResult]: For program point L881-1(lines 881 886) no Hoare annotation was computed. [2020-08-18 21:07:28,564 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 878 888) 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|)) [2020-08-18 21:07:28,564 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 878 888) no Hoare annotation was computed. [2020-08-18 21:07:28,564 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 878 888) no Hoare annotation was computed. [2020-08-18 21:07:28,564 INFO L264 CegarLoopResult]: At program point L884(line 884) the Hoare annotation is: (and (= main_~dev~0.offset 0) (= (select (select |#memory_int| main_~dev~0.base) 8) 0)) [2020-08-18 21:07:28,564 INFO L264 CegarLoopResult]: At program point L883(line 883) the Hoare annotation is: (and (= main_~dev~0.offset 0) (= (select (select |#memory_int| main_~dev~0.base) (+ main_~dev~0.offset 8)) 0)) [2020-08-18 21:07:28,565 INFO L264 CegarLoopResult]: At program point L883-1(line 883) the Hoare annotation is: (and (= main_~dev~0.offset 0) (= (select (select |#memory_int| main_~dev~0.base) 8) 1)) [2020-08-18 21:07:28,570 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 09:07:28 BoogieIcfgContainer [2020-08-18 21:07:28,571 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 21:07:28,574 INFO L168 Benchmark]: Toolchain (without parser) took 3674.09 ms. Allocated memory was 140.0 MB in the beginning and 246.9 MB in the end (delta: 107.0 MB). Free memory was 102.1 MB in the beginning and 141.7 MB in the end (delta: -39.7 MB). Peak memory consumption was 67.3 MB. Max. memory is 7.1 GB. [2020-08-18 21:07:28,575 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 121.6 MB in the beginning and 121.1 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-08-18 21:07:28,576 INFO L168 Benchmark]: CACSL2BoogieTranslator took 629.55 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 101.7 MB in the beginning and 166.5 MB in the end (delta: -64.8 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. [2020-08-18 21:07:28,577 INFO L168 Benchmark]: Boogie Preprocessor took 66.77 ms. Allocated memory is still 201.9 MB. Free memory was 166.5 MB in the beginning and 163.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-08-18 21:07:28,577 INFO L168 Benchmark]: RCFGBuilder took 652.35 ms. Allocated memory is still 201.9 MB. Free memory was 163.6 MB in the beginning and 120.9 MB in the end (delta: 42.8 MB). Peak memory consumption was 42.8 MB. Max. memory is 7.1 GB. [2020-08-18 21:07:28,578 INFO L168 Benchmark]: TraceAbstraction took 2317.18 ms. Allocated memory was 201.9 MB in the beginning and 246.9 MB in the end (delta: 45.1 MB). Free memory was 119.9 MB in the beginning and 141.7 MB in the end (delta: -21.8 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2020-08-18 21:07:28,582 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 140.0 MB. Free memory was 121.6 MB in the beginning and 121.1 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 629.55 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 101.7 MB in the beginning and 166.5 MB in the end (delta: -64.8 MB). Peak memory consumption was 24.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 66.77 ms. Allocated memory is still 201.9 MB. Free memory was 166.5 MB in the beginning and 163.6 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 652.35 ms. Allocated memory is still 201.9 MB. Free memory was 163.6 MB in the beginning and 120.9 MB in the end (delta: 42.8 MB). Peak memory consumption was 42.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2317.18 ms. Allocated memory was 201.9 MB in the beginning and 246.9 MB in the end (delta: 45.1 MB). Free memory was 119.9 MB in the beginning and 141.7 MB in the end (delta: -21.8 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.0s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 49 SDtfs, 55 SDslu, 109 SDs, 0 SdLazy, 253 SolverSat, 39 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 49 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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, 12 LocationsWithAnnotation, 21 PreInvPairs, 23 NumberOfFragments, 145 HoareAnnotationTreeSize, 21 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 12 FomulaSimplificationsInter, 84 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 51 ConstructedInterpolants, 0 QuantifiedInterpolants, 6474 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 2 PerfectInterpolantSequences, 1/2 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...